US2769663A - Apparatus for coating articles with refractory oxides and the like - Google Patents

Apparatus for coating articles with refractory oxides and the like Download PDF

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Publication number
US2769663A
US2769663A US440052A US44005254A US2769663A US 2769663 A US2769663 A US 2769663A US 440052 A US440052 A US 440052A US 44005254 A US44005254 A US 44005254A US 2769663 A US2769663 A US 2769663A
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United States
Prior art keywords
rod
nozzle
rods
air
oxide
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US440052A
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English (en)
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Jensen Louis Peter
Jr William Maxwell Wheildon
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Saint Gobain Abrasives Inc
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Norton Co
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Priority to BE547174D priority Critical patent/BE547174A/xx
Priority to NL206515D priority patent/NL206515A/xx
Priority to NL99881D priority patent/NL99881C/xx
Application filed by Norton Co filed Critical Norton Co
Priority to US440052A priority patent/US2769663A/en
Priority to FR1128618D priority patent/FR1128618A/fr
Priority to GB18602/55A priority patent/GB770859A/en
Priority to CH334658D priority patent/CH334658A/fr
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/20—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion
    • B05B7/201—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
    • B05B7/203—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle the material to be sprayed having originally the shape of a wire, rod or the like
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • This invention relates to the coating of metals and other materials, such as graphite, with oxide such as alumina, and more particularly to apparatus for fusing coating oxides and for applying such fused oxide to metal or other parts to coat them.
  • One of the objects of this invention is to provide a dependable and eflicient apparatus for high-temperature fusing and atomizing, in reliable continuity, coating oxides and the like which, for effecting dependable coating, have to be provided in especially fabricated rod forms which are inflexible and breakable so that they cannot be reeled or coiled and have to be made up in relatively short lengths.
  • Another object is to provide a practical and easily controlled apparatus for effectively and in controllable continuity bringing such rod-like oxide forms into coaction with a high-temperature flame for fusion and an air blast for directing fused particles onto the surface to be coated, in a manner to utilize, to full advantage, the structural characteristics provided in the refractory oxide rod structures; more particularly, it is another object to provide for efficient consumption of the oxide rod forms, to reduce wastage thereof, and to facilitate long-continued coating production free from frequent or detrimental interruptions for replenishment of oxide coating material.
  • Another object is to provide an apparatus of the abovementioned character with ease and convenience of control of its operating characteristics so as to facilitate manual manipulation of the apparatus by the operator according to the requirements and conditions, including peculiarities of configuration, met with in the part to be coated.
  • Another object is to provide an apparatus of the abovementioned character constructed for ease and depend ability of handling or manipulating by the operator, adapted for facility of rearrangement according to various or varying requirements met with in practices.
  • Another object is to provide an improved apparatus for effecting conversion of high melting point rod-like forms of oxides into strong, long lasting, and virtually integral coatings on metal parts, graphite parts, and others. Another object is to provide such apparatus that is durable against the abrasion-like surface characteristics of such rods as the latter are singly or in succession fed to the high-temperature flame and applicating air blast.
  • Figure 1 is a small-scale side elevation of our apparatus for fusing and spraying refractory oxides and the like, the view showing diagrammatically, in broken lines, a long or deep article with the apparatus related thereto for coating it interiorly;
  • Figure 2 is an elevation, on the same scale as that of Figure 1, showing a number of refractory or like oxide rods in the relationship they bear in the apparatus of Figure 1;
  • Figure 3 is an end elevation as seen from the left in Figure 1;
  • Figure 4 is a simplified electrical diagram illustrating a preferred drive and speed control for certain parts of the apparatus
  • Figure 5 is a large-scale side elevation of the apparatus, certain parts being broken away to shorten the view, the right-hand part being shown substantially in central vertical section and the left-hand part being shown in section as seen on the line 5-5 of Figure 3;
  • Figure 6 is a transverse vertical sectional view, on a larger scale, as seen along the line 66 of Figure 5, show 'ing details of a gripper device and certain parts coasting therewith;
  • Figure 7 is a detached plan view, as seen from above in Figure 5, of a combined gripper-element carrier and coupling, and
  • Figure 8 is a detached enlarged perspective view of slide part of the gripper device shown in Figures 5 and 6.
  • FIG. 1 we have there shown, in simplified side elevation and approximately to scale, an illustrative form of our apparatus for fusing and spraying, for example onto the surfaces of metal, graphite, or other substances, a wear-resistant, heat-resistant material, such as a refractory oxide of which alumina is a good illustration, to form thereon a coating that is lastingly joined to the surface, becoming virtually integral therewith.
  • a wear-resistant, heat-resistant material such as a refractory oxide of which alumina is a good illustration
  • the coating gives the part protection against oxidation and other chemical reaction; it is electrically non-conductive and provides an insulating coating; it is highly resistant to wear; being refractory, it is also heat-resistant.
  • the coating gives the part protection against oxidation and other chemical reaction; it is electrically non-conductive and provides an insulating coating; it is highly resistant to wear; being refractory, it is also heat-resistant.
  • dependability and durability as in gas turbines, jet engines, and rocket nozzles and chambers, where parts are subjected to high-temperature gases or hot flame or other bad effects of combustion, can be materially increased.
  • An oxyacetylene flame serves as a suitably concentrated heat source, adjacent an applicating air blast, and to the flame is fed the highfusion-point refractory oxide in the form of a straight solid rod that comprises fine particles of the oxide rigidly massed or bonded together by sintering, the rod being hard, rigid, and unbendable without breaking, whereby, as it endwise enters the hot flame, its end portion is raised in temperature to fuse it and the sintered-together particles thereof, making the heated or fused particles releasable with a time delay so that, as the fusing end portion of the rod enters the air blast, the latter, due to its velocity, picks or sweeps these releasable fused particles or other minute portions of the fused oxide off of the.
  • the sintered-together oxide particles are in effect not released or releasable from their sinter-bonded mass or condition until they are molten; accordingly the process assures that the air blast operates to remove from the heated end of the rod only molten oxide particles or molten small agglomerates thereof to impinge them at substantial velocity and in molten condition against the surface being coated or, as in building up the thickness of a coating, against already deposited coating material.
  • the part to be coated does not have to be preheated, yet the coating is tenaciously bonded to the base member without the use of a separate bonding agent; moreover the coating is dense and homogeneous, and Will notcraze, crack, spell or peel.
  • the coating itself is integral in that the individual particles thereof are self-bonded together and produce a coating that is of itself a rigid structure independent of the backing or base member.
  • the coating material has been made up, out of small particles, in the form of rods, by sintering these small particles together under high temperatures. They are of uniform composition and of round cross-section, of a diameter on the order of A; of an inch though, so far as our invention is concerned, the rods may be of any other uniform cross-section, such as square, triangular, hexagonal and the like, and by the word rod we intend to include such and other usable shapes.
  • small diameter rods can be molded under pressure and thereafter heated or fired to a temperature to sinter the particles together while at the same time burning out the temporary binder.
  • Strong refractory rods of pure oxide material can thus be produced, substantially free from organic matter and Water or other volatile constituents.
  • the sintering or firing operation is cairied out at temperatures of at least a dark red heat, and usually temperatures of 1060" C. or more are employed.
  • oxide rods are made up in lengths that are suitable for efiicient manufacture thereof and may be supplied for use in oxyacetylene-airblast apparatus in usually relatively short lengths. say, about 1 /2 or 2 feet long, convenient for shipment, storage and handling, for they cannot be reeled up and, While strong, are breakable and more easily so the greater their length. Because of such factors, an optimum length of oxide rod is desirable and the just'mentioned 1 /2 or 2-foot length is given as an illustration. Then again a full-length rod may become broken and desirably theresultant lengths should also be usable.
  • our apparatus is preferably constructed to be manuaylly handled by the operator, like aso-called hand powertoel, so that the operator can conveniently and freely move the device as a Whole to bring and direct the spraying action as needed; at its right-hand end the apparatus comprises a compact casting shaped and machined to form a casing or housing 11 provided, as at its underside, with a handle or handgrip 12 and having extending from its front end (the left-hand end in Figures 1 and 5) a tube-like barrel structure, generally indicated by the reference character 13, and comprising preferably a number of successively and detachably coupled parts, later described, of which the endmost part is a nozzle structure NS for the emission of the mixture of combustible gases and for the emission of the air blast as well as for coactingly relating thereto the end of an oxide rod of the kind above described.
  • the tube-like barrel structure 13 is of composite construction and, for various reasons, is preferably of substantial length and, moreover, it is so constructed that, according to certain conditions met with in practice, its over-all length may be changed. To illustrate, it may have a length on the order of 4 feet as, for example, may be necessary for coating the interior surface of a long tube or vessel of relatively small crosssection,
  • an intermediate portion of the tubular barrel structure 13 is readily replaceable by a shorter or longer portion, as will be later described.
  • the inner or casing end of the structure 13 can serve as a convenient hand-grip, as by the left hand of the operator, and with his right hand grasping the handle 12, the operator can effect steady manual guiding control of the changing relationship of the nozzle end of the apparatus with respect to the part being coated.
  • an air and gas receiver-distributor 16 which is interiorly divided, as indicated by the broken line 17 in Figure 3, into an air chamber 18 and a gasmixing chamber 19, the former being supplied with air under pressure through a hose line 20 and mixing chamber being supplied with acetylene and oxygen, each under suitable pressure, through the respective hoses 2 1 and 22.
  • suitable adjustable pressure regulating valves (not shown) and pressure gauges (not shown).
  • the hose lines are connected by suitable couplings provided in the bottom walls of the receiver 16 so that the hose lines are in depending relation from the apparatus and thus interfere least with the manipulation thereof;
  • built into the bottom wall of the receiver 16 is a suitable manually controlled valve mechanisrn, of the cock-valve type, indicated at 23, so that the operator, as by suitable lever mechanism 24, can handily control the supply of acetylene and oxygen to the mixing chamber 19 and the supply of air to the air chamber 18.
  • a suitable manually controlled valve mechanisrn of the cock-valve type, indicated at 23, so that the operator, as by suitable lever mechanism 24, can handily control the supply of acetylene and oxygen to the mixing chamber 19 and the supply of air to the air chamber 18.
  • these structural elements may be of any suitable known types of construction or arrangement such as for example those heretofore used or known in oxyacetylene manually operated devices.
  • the front wall 16 of receiver-distributor 16 is provided with an externally threaded male coupling part 23 (Figure 5) that projects forwardly (to the left in Figure 5); it may be solid excepting for a central coaxial round passage 39, large enough to freely receive therethrough the oxide rods above mentioned, and excepting for a suitable number of gas passages 31 which lead to the mixing chamber 19.
  • the central rod passage 3% extends through the receiver- .distributor 16, in a tube 32 having a tube mouth 33, the
  • the tube 32 extending through a bore 34 that is drilled through a solid part of the receiver-distributor 16.
  • the tube mouth 33 is chamfered to allow of easy entrance of a rod without sticking.
  • the bore 34 is aligned with a suitably formed round channel 36 ( Figure 5) that opens at the rear Wall of casing 11 so that a rod can be inserted from the outside of the casing 11; if desired the open end of round ch'an-- nel 36 can receive an adapter or tube 37 provided with a coaxial round channel 38 diametered to suit the diam eter of rods to be used in the apparatus and thus coaxially align the adapter rod passage 38 with the rod passage that extends through the receiver-distributor 16 and through the coupling member 28.
  • the adapter 37 has an external head to limit its entry into the channel 36 and to provide, as by suitable chamfering, an external month end for channel 38 so that the operator can with facility insert one rod after another as the oxide rods are used up.
  • Adjacent the tube mouth 33 ( Figure 5) we provide two coacting feed drums or wheels 40 and 41, one above the other and having their adjacent portions projecting, through suitable cutouts in the metal of casing 11, into the large channel 36; these feed drums 40, 41 have relatively narrow peripheral cylindrical faces which are rubber-tired as at 42 and 43 for cushion-like driving engagement with the refractory rod that is entered therebetween.
  • the feed drums 40, 41 are provided with meshing gears 44 and 45 respectively so that one drum is driven from the other and the two are driven in opposite directions, as indicated by the arrows, to feed the rod therebetween forwardly, that is, to the left in Figure 5.
  • Drum and gear 40, 44 are secured to a shaft 46 which has bearings (not shown) in the casing structure 11; shaft 46 is driven through reduction gearing and in a preferred manner later described.
  • Feed drum 41 and gear 45 are secured to a shaft 47 that is provided with bearings, as in known constructions, provided in a movable part 48 of the casing structure 11; casing part 48 is movable in directions to shift the upper feed drum 41 toward or away from the lower feed drum 40 and for such purpose it may be pivoted on a stud shaft 50 which is suitably carried by the casing structure 11 and for adjustably setting the upper feed drum 41 there may be provided a thumb screw 51 which passes through the top wall of easing part 48 and is threaded, as shown, into a threaded hole of the casing structure 11.
  • Threaded coupling part 28 Concentric with the threaded coupling part 28 is another threaded male coupling part 54 (Figure 5); it surrounds the base portion of coupling part 28 and has one or more passages 54a that lead into the air chamber 18 of the part 16.
  • a short tapered sleeve 55' which terminates in an internally threaded coupling part 56 and accordingly coupling part 56, coupling part 28 and the rod passage or channel 30 are coaxial and, in coaction with coupling part 28 and coupling part 56, sealed mechanical con nections may be made with other parts later described for extending to the remotely located nozzle structure NS (see Figure 1) a tube passage for containing a succession of oxide rods, tube passages for oxyacetylene mixture from mixing chamber 19 ( Figure 3) and air under pressure from the air chamber 18, all within the tube-like barrel structure 13 of Figure 1.
  • the nozzle structure NS for coacting with such a succession of rods comprises several coacting components which, for flexibility of rearrangement as earlier above mentioned, are preferably detachably inter-related coaxially', and which preferably are closely compacted radially.
  • These components comprise, in the order from right to left in Figure 5 which is the order in which they are encountered by the foremost rod of a succession, a rod gripper and loadapplying device generally indicated by the reference character 60, a gas nozzle 61 which provides jet passages for combustible gas mixture, and an air nozzle 62 which coacts with the gas nozzle 61 to form certain coacting airernission channels.
  • the gas nozzle 61 is externally frusto-conical and has a coaxial round passage 63 for the rod; it has jet-like passages 64, illustratively three in number and spaced apart, that extend from its large end face through its smaller end face and it is externally of the latter face where combustion of the oxyacetylene takes place as it emerges from these jet passages 64, the latter being distributed about the rod passage 63 and the rod end projecting therefrom.
  • the rod gripper device 60 comprises a cylindrically shaped block 65 that has a coaxial rod passage 66 therethrough and a left-hand end face abutting against the larger end face of gas nozzle 61, this left-hand end face being provided with a coaxial ringshaped recess 67 into which the gas jet passages 64 open for supply of gas mixture to the latter regardless of relative rotational positions of the nozzle 61 and rod gripper 60; the ring-shaped recess 67 is connected to the righthand end face by a suitable number of passages 68, illustratively three in number and spaced 120 apart (see Figure 6).
  • Passages 68 thus form supply channels for flow of gas mixture to nozzle 61 and they are preferably uniformly distributed in the block 65 for better abstruction of heat from the block 65 of the gripper device 60 and thus to aid in protecting the gripper device against detrimental heating derived from the gas combustion nozzle 61.
  • the left end portion of the gripper device block 65 (see also Figure 7) is externally threaded as at 70 for receiving thereon the internally threaded part of a coupling flange 71 which is slipped on to the frusto-conical nozzle 61 to take against an end peripheral flange 72 of the latter, whereby to tightly and coaxially secure the gripper device 60 and gas nozzle 61 together in the abutting end-face relationship above described. Thereby also the two round rod passages 66 and 63 become aligned.
  • the metal block 65 of gripper device 69 is provided with an arrangement for gripping or holding a rod, with appropriate force, against axial movement of the rod, thus also loading the rod in the sense of requiring more power to move the rod axially.
  • this arrangement comprises a suitable number of spring-pressed rodengaging elements which are preferably appropriately distributed about the rod channel 66 in relation to the particular shape of cross-section of the rod in order also to substantially center the rod relative to the rod passage 66.
  • spring-pressed rodengaging elements which are preferably appropriately distributed about the rod channel 66 in relation to the particular shape of cross-section of the rod in order also to substantially center the rod relative to the rod passage 66.
  • the refractory oxide rods are hard; they can also have, because of the nature of many of these oxides such as alumina, particularly crystalline alumina, abrasive characteristics.
  • gripper elements that are hard, such as hardened steel, and preferably also arrange them so they can partake of rotational movement in response to axial movement of the rod.
  • they can be in the form of hardened steel balls 74 (see Figures 6 and arranged to be spring-pressed radially inwardly of rod channel 66, being spaced about the axis of the latter at 120 intervals where the oxide rods are round in cross-section or, for example, hexagonal.
  • a preferred and illustrative mounting and assembly of the balls 74 comprises the provision, for each, of a round cross-sectioned radially extending recess 7'5 ( Figure 6) which can be formed, as by drilling or milling toward the axis of the metal block 65 (see also Figure 7) and halting the tool materially short of complete entry into the rod channel 66 so as to form a ring-shaped ledge 76 surrounding a hole '77 that is of lesser diameter than the drill and somewhat smaller in diameter than the diameter of the balls 74 as is better indicated in Figure 6.
  • the ball 74 can therefore project materially into the rod channel 66 by a distance approximating the ball radius.
  • a short plunger '76 Slidably received in each recess 75 and bearing against ball '74 therein is a short plunger '76 (see Figure 8) which, at its outer end, has a diametrically extending slot 60 of a width slightly greater than the width of aperipherally extending groove 81 ( Figures 7 and 6) turned or otherwise formed in the cylindrical block body 65 of the gripping device 60; this peripheral groove 81 intersects the radial recesses 75 along their diameters and, with the diametric slots 30 of the plungers 73 aligned with groove 31, a split spring ring 32 ( Figure 6) is sprung into the groove 31 and the aligned slots fill, thusrnot only holding the balls and plungers assembled but also yieldingly pressing them radially inward and, in the absence of rod in the rod channel 66, normally seating the balls 7d against their respective ring-shaped ledges 76.
  • the balls 74 thus form in effect a variable threat in the rod passage 66, the throat being narrowest in the position of the balls just described.
  • the balls 74 are shown in an intermediate radial position, pressing radially inward upon the rod R which, illustrativeiy, is of a diameter of /s of an inch, the split spring ring 32 being shown in a correspondingly intermediate stressed condition.
  • the peripheral groove St and the open ends of the radial recesses 75 are closed off by a metal band 64 which is pressfitted in position and against a shoulder on the body 65 formed by an integral flange 35 which is internally threaded ( Figure 5) to form a female coupling part for purposes later described.
  • the air nozzle 62 ( Figure 5) has a main discharge passage 87 generally circular in transverse cross-section and coaxially aligned with the gas nozzle 61, substantially as shown in Figure 5, having an internal frusto-conical surface 88 which is spaced from and is coaxial with the frusto-conical portion of the gas nozzle 6%. to form air passage 9% therebetween.
  • the air nozzle 62 at its righthand end, is externally threaded to form a male coupling part 92 and to it is connected one end of a tube 93 that extends about and over the rod gripping device 69, forming therebetween an annular air passage 94 so that, when air is admitted thereto from the air chamber 13 to supply air to the nozzle air passage 9%), the substantial external and generally cylindrical areas of the gripper device 69 are swept by the air moving in the annular channel 94, thus keeping the gripper device and its parts from becoming overheated even though the gripper device is in heat-conductive relation to the gas nozzle 61.
  • the nozzle structure NS is connected to the receiverdistributor 16 at the front of the casing structure it by coaxially inter-related parts of such length as to position the nozzle structure NS at the desired distance from the casing 11 according to the reach needed to effect oxide coating at remote or otherwise inaccessible regions as is diagrammatically illustrated in Figure l with respect to the hollow device to be interiorly coated.
  • One of these coaxial parts is in the form or an external tube 96, shown in full in the small-scale view of Figure l and shown broken'away in the large-scale sectional view of Figure 5, and in the latter view is also shownthe internal coaxial member 97 which has an external cylindrical surface of lesser diameter than that of the tube 96 so as to form between the two an annular passage 98 or channel of substantial capacity and serving for the transmission of air under pressure.
  • these gas passages open into a ring-shaped recess 162 formed in the plane end face of member 97 and adapted to overlie the gas passages 31 through the coupling part 23; the right end of member 97 is flanged as at 163 by which, through the flanged internally threaded coupling ring 194, the right end of member 97 is tightly secured against the companion end face of coupling part 28 and in coaxial relation so that rod channels 36 and 1% are neatly aligned.
  • gas mixture from mixing chamber 19 can flow through the gas passages 31 to the ring-shaped recess 1&2 from which it is distributed to the gas passages till.
  • the gas passages 161 terminate in a ring-shaped recess 195 adapted to overlie the gas passages 68 which terminate in the right end face of rod gripper 60, these companion end faces being brought into tight relation by the threaded interconnection of female coupling flange of the rod gripper 6'9 with the externally threaded coupling flange 169 provided at the left end of member 97.
  • the rod channels Edit and 66 are neatly aligned coaxially.
  • the several sections or component lengths of round rod channels form a dependable straight- .line rod guideway; they become coaxially aligned and their straight-line continuity throughout the entire length of the apparatus, that is, from the entry channel 38 in the back wall of casing 11 to the exit end of rod channel 63 in the gas nozzle 61, becomes completed for the reception of the above-described succession of rods such as rods R R R and R of Figure 2.
  • the gas passages in the several axially aligned component parts become inter-connected and their continuity is completed for the flow of gas from the mixing chamber 19 to the discharge jet passages 64 of the gas nozzle 61.
  • Air nozzle 62 has detachably threaded to it, as above described, the short tube member 93 which is to extend over the rod gripper 60 and provide the annular airoooling passage 94, and they may now, for completing the assembly, be treated as a sub-unit which as such is connected to the left end of the long outer tube 96; for this purpose tube 93 is internally threaded as at 196 to receive the externally threaded and shouldered coupling end 107 of the long intermediate tube 96; the right-hand end of long tube 96 is externally threaded as at 168 and is connected with the internally threaded part 56 of the coupling sleeve 55'.
  • This last threaded connection which is preferably locked by a lock nut lit locates the long tube member 96 coaxially with the internal part 97, and thus the long annular air passage 93, above-described, is formed therebetween and air nozzle 62 becomes coaxially positioned relative to the gas nozzle 61 and the respective frusto-conical surfaces of the latter two parts are fixed in coaxial and radially spaced relation to form the air passage 99 therebetween. Accordingly air flow may take place from the air chamber 18, through the passages 56 and into the coupling sleeve 55, and thence along the annular passages 93 and 94 to the nozzle passage 90.
  • the operator releases the movable casing part 48 ( Figure to move the upper feed drum 41 away from the lower feed drum; the operator then, without obstruction from the feed drums, inserts one oxide rod after another, through the mouthed entry opening in adapter 37 at the rear of the casing 11, each successively inserted rod pushing those ahead of it toward the left in Figures 1 and 5 to fill up the long centrally located rod passage or channel.
  • the rod gripper device 68 for closely adjacent to the gas nozzle 61 is the rod gripper device 68 with the balls 74 projecting into or constricting the continuous rod passage and they block the inserted rods from sliding or falling out.
  • the last-inserted rod such as rod R of Figures 1 and 2 can project rearwardly from the apparatus so long as a forward portion of it is in position to be acted upon by the feed drums 40, 41.
  • the operator may, by pushing the last-inserted rod, advance the entire succession of rods so that the end of the foremost one passes through the yieldingly expansible throat formed by the balls 74 in order to bring its end to the end of rod channel 63 in the gas nozzle 61 or he may leave that short distance of advancing movement to the rod-driving action of the feed drums.
  • the pusher rod R ( Figures 1 and 2) is fed to the left and the entire succession of rods R R R R advances, the leading end of the foremost oxide rod R being progressed into the region of high-temperature combustion of the oxyacetylene mixture emitted from the jets of the gas nozzle 61 and coacting therewith .
  • air emitted from the coaxially arranged air nozzle passage 90 achieving high-temperature fusion of oxide particles which are released, as fused particles or agglomerates of fused particles, for substantial high-velocity projection thereof onto the metal or other surface to be coated, .in the manner of the process earlier above described.
  • /s" alumina rods may be fed at the rate of 1.18 inches per minute with the oxygen supply at to pounds, the acetylene at 15 to 20 pounds, and the air at 60 pounds per square inch.
  • the feeding rate may be about 1 .5 inches per minute, the oxygen can be at 15 to 20 pounds, the acetylene at 15 to 20 pounds, and the air at 40 pounds per square inch.
  • the picking-off of molten oxide particles from the fusing rod end may be said to be efiected primarily by the emitted air blast and such action may be enhanced by the action of a deflector 114 ( Figure 5) in the form of a small plate attached, as by screws 115, across the upper half of the front end of air nozzle 62, the plate 114 overhanging a cutout 116 in the vertical face of which terminate several air passages 117, illustratively one on each side of the central vertical plane of the structure, and leading, as shown, to the air passage 90, so that air emitted from passages 117 is de flected in generally downward and transverse directions, by deflector plate 114, to coact with the larger volume of moving air and gases of combustion, thus conjointly operating upon the fusing end of the oxide rod.
  • a deflector 114 Figure 5 in the form of a small plate attached, as by screws 115, across the upper half of the front end of air nozzle 62, the plate 114
  • the pick-off of molten oxide particles or molten agglomerates thereof, and the projection thereof onto the surface to be coated is effected by movement of a gas or gaseous medium.
  • a gas or gaseous medium This is so where the edium is air.
  • thecombustible gas, such as the acetylene, and the combustion-supporting gas, such as the oxygen can have enough pressure to serve as such a medium; in a sense this applies to the illustrative example given above because the air blast assists in supporting combustion for it provides oxygen additional to that supplied through the hose line 22.
  • sinter-bonded alumina and zirconia rods are given as examples; other oxides, preferably suitable refractory metal oxides, are usable in making up the rods and for effecting coatings as above described.
  • other oxides preferably suitable refractory metal oxides, are usable in making up the rods and for effecting coatings as above described.
  • barium oxide, beryllium oxide, calcium oxide, iron oxide, manganese oxide, nickel oxide, strontium oxide, thorium oxide, titanium oxide, and uranium oxide also spinels of which a well-known type is magnesium-aluminum spinel; and others. Also mixtures of such substances may be used in making up the refractory rods for use in our apparatus.
  • the air and acetylene pressures can be the same though, for a given cross-section of refractory rod, rate of feed has to be appropriately suited, and for materials fusing below 2000 C. an air pressure of about 60 pounds is preferred whereas for materials fusing above 2000: C. the air pressure should be a little lower.
  • the rod gripper device 60 grips the endmost rod R as near its fusing end as possible, in effect applying a mechanical load which the power source driving the feed drums 4%, 41 has to overcome to advance the entire succession of rods R R etc., and they do so, in centering the rod in the rod passage 66, with the advantage of avoiding abrasive action by the moving rod upon the walls of the passage 66.
  • they are self-accommodating to possible irregularities or variations in rod contour and in that respect they might cause some variations in the load that they impose upon the feed-drive mechanism; also such an effect might be caused when the more or less butt-ended junction between two successive rods reaches and enters the throat formed by the balls.
  • an electric motor of adjustable constant speed for driving the feed drums 40, 41, through suitable reduction gearing, and preferably adapted, for any selected speed, to be inconsequentially affected as to speed by such variations in load as just noted.
  • the electric motor is preferably a D. C. shunt motor; it is diagrammatically shown at M in Figure 4 and may take any suitable compact form, as shown in Figure 3, for ease of attachment to, and at a side of, the casing structure 11, as by providing it with an attaching flange 121 ( Figure 3) to rest against a suitable external face plate 122 of the casing 11, to which it is attached as by screws 123 ( Figures 3 and 5).
  • the motor shaft or a suitable extension thereof, shown at 125 in Figure S, extends into greases" 11 the casing structure 11 where it carries a worm 126 that meshes with a wormwheel 127 on a shaft 128 carried in spaced bearings 130 and 131 between which the shaft carries a worm 132 that meshes with a wormwheel 133 on the shaft of the lower feed drum 40.
  • a flexible cable 135 (Figure 3) depends from the underside of the motor M, cable 135 having therein suitable conductors leading to the motor armature and to its shunt field, shown respectively at A and F in Figure 4, and, if desired, also control circuit conductors where it is desired to control, as from suitable manual switches or the like (not shown) mounted on the motor casing or on the casing structure 11, remotely located motor-speed setting devices.
  • Unidirectional current for energizing motor M is preferably derived from any usual alternating current power supply line, such as a llO-volt 60-cyclc circuit diagrarrn matically indicated in Figure 4 at l37-l38.
  • Any suitable means may be employed to supply the shunt field F with direct current and to supply the armature A also with direct current but of selectable voltage, throughout a suitable voltage range, in order to set the motor speed at the desired value; such a power supply means is diagrammatically indicated by the broken line rectangle PS in Figure 4.
  • it may comprise a rectifier 140 which, through conductors 141 and 142, energizes the shunt field F at preferably a fixed voltage, and it may include an auto-transformer 144 provided with a shiftable controltap 145, which may be remotely controlled, in order, through a suitable rectifier 146, to energize, via conductors M7 and 148, the armature A at any selected voltage corresponding to the motor speed desired.
  • motor speed is substantially constant for any selected applied armature voltage. In this manner, a suitable surface speed for the feed drums 40 41 and feed speed for the succession of rods R R etc.
  • the feed rate should be dimin' bed, other factors, including conditions of combustion for fusing the oxide, being equal.
  • the rectifier 146 may include any suitable means, of which various types are known, such as electronic tube circuits or arrangements of saturable reactors, for compensating for such voltage drops and in that way maintain applied armature voltage constant as well as the rate of feed of the succession of rods, particularly where the rods might impose, as by the rod gripper device 60, variations in load, for any selected or intended rate of feed.
  • rate of feed of rods that is, in terms of rate of lineal movement, may be relatively low, being on the order of 1.5 per minute for a /8" zirconia rod.
  • rate of feed of rods may be relatively low, being on the order of 1.5 per minute for a /8" zirconia rod.
  • the rod gripper device 60 positioned as closely as possible to the exit end of the rod passage 63 of the gas nozzle 6i, holds the endmost rod R whatever its length as its forward end is being used up in coating deposition, against being drawn or sucked out of the rod passage by the action of the discharging gas mixture, air blast, and gases of combustion, for the latter surround the protruding end of the rod and move in a general axial direction and thus impose an ejecting force or pull on the 12 rod.
  • the rod gripper device exerts gripping force on the endmost rod not only sufficient for the just stated purpose but also to resist the additional force, in ejecting direction, which the weight of the rods behind rod R impose upon the latter when the apparatus is tilted with its nozzle end downward as is oftentimes necessary in coating operations as in reaching the inside bottom sur face of a deep vessel or container.
  • the gripper device accordingly imposes, upon the motor driving the feed drums 40, 4-1, a more or less fixed magnitude of load over and above that which would otherwise be needed to feed a succession of rods, and this has the advantage of achieving better inherent speed regulation of the shunt driving motor M for armature-current changes due to operational variations in load are in effect measurable against the armature current corresponding to this more or less fixed load and are therefore proportionately of lesser detrimental 1R drop effect.
  • the gripper device and its several coacting elements are protected against detrimental heat effects by the heat-abstracting action of the gas mixture flowing through the uniformly distributed gas passages 68 ( Figures 5 and 6) on its way to the nozzle passages 64 and by the heat-abstracting action of the rapidly moving air, of substantial volume, along the annular passage 94 on its way to the air nozzle passage 8%.
  • the split wire spring 82 durability of spring action, as by the split wire spring 82, is maintainable and, where the rod-engaging elements such as the balls 74 and also their spring-pressed plungers 7 8 are made of hardened steel for good wear resistance, risk of drawing the temper of these parts and thus softening them can be lessened.
  • the balls may partake of rotational shift as rod feed progresses, and wear thereof is minimized because their engagement with the feeding rod can be in a rolling engagement and in that way successively differe points on the ball surfaces are brought into engage? -n.
  • Qoaxial parts 97 and E 6 together constitute the readily replaceable intermediate portion of the tubular barrel structure 13 ( Figure l) earlier mentioned above; as there stated by way of illustration, their length be about 4 feet where a long reach of that order of magnitude, for coating application, has to be effected as is diagrammatically shown with respect to the member l5.
  • These parts "i'--% are readily detachable by way of tie various threadeu coupling elements at their respective ends; accordingly, where a longer or a shorter reach has to be made, parts J796 are easily disassembled replaced by a pair of internal and external parts exactly like them but of the desired greater or shorter length.
  • nozzle structure NS may be brought closely adjacent to casing structure 11 and receiver-distributor part 16 by making or selecting intermediate members 97-9d ofsuch short iengththat they are almost like short coupling elements,
  • the ready detachability or disassembly of the parts of the nozzle structure NS is also of advantage; for example, gas nozzles, like gas nozzle 61 of Figure 5, of different characteristics such as different sizes or angularities of gas jet passages may be substituted, being easily attachable, by coupling ring 71, to the left end of the rod gripper device 60. To effect such replacement, all that has to be done is to unscrew the air nozzle-tube unit 62-93 at the threaded coupling 106- 107 to gain access to the coupling ring 71. Also where desired, air nozzles of different configuration or characteristics may be substituted for the illustrative air nozzle 62, at the threaded connection 91.
  • gas nozzle or air nozzle may be readily changed or replaced, while always retaining the rod gripper device 60 in coacting relation both as to its functioning as above described and as to cooling action thereon by air in the surrounding annular passage 94 and by gas mixture flowing in the gas ports or passages 68 through the main body of the gripper device itself.
  • the apparatus is of dependable construction and of reliable and eflicient action for the conversion of high melting point rod-like forms of refractory oxide and the like into dependable coatings of metal parts, graphite parts, and parts made of any other materials compatible with the reception thereon of such coatings.
  • the apparatus is of wide flexibility of assemblage and rearrangement of certain of its parts to the end that, without impairment of the coaction of its parts or of its many advantages, the apparatus be widely adaptable according to such requirements of the parts to be coated as size or configuration or relative location or accessibility of the surface area or areas thereof to be coated.
  • An apparatus for coating parts with refractory metal oxides and the like comprising a casing having therein a straight-line channel for entry therein endwise of relatively inflexible frangible oxide rods, said channel having coacting therewith opposed feed drums having operative faces of yielding material for receiving therebetween and feeding endwise an oxide rod in the channel, said apparatus having a nozzle structure positioned externally of the casing and spaced therefrom in line with said channel, said nozzle structure comprising a gas nozzle having a central rod passage at the entry end of which is a rod gripper device having a central rod passage with spring-pressed rod-engaging means projecting into the latter and forming a yieldable throat for yieldingly holding a rod therein against feeding movement, said gas nozzle having gas passages therethrough and said gripper device having gas passages therethrough and distributed in spaced relation about its rod passage, with air nozzle means about said gas nozzle for discharge of air adqacent the exit end of the rod passage and gas passages in the gas nozzle, said air
  • An apparatus for coating parts with refractory metal oxides and the like comprising a casing having therein a straight-line channel for entry therein endwise of relatively inflexible frangible oxide rods, said channel having coacting therewith opposed feed drums having operative faces of yielding material for receiving therebetween and feeding endwise an oxide rod in the channel, said apparatus having a nozzle structure positioned externally of the casing and spaced therefrom in line with said channel, said nozzle structure comprising gas nozzle means having a central rod passage adjacent the entry end of which is a spring-pressed rod-engaging means for yieldingly holding a rod against feeding movement, with air nozzle means about said gas nozzle means for discharge of air adjacent the exit end of the rod passage in the gas nozzle means, said air nozzle means having a tube-like air-supply part that extends in spaced relation about said rod holding means for the flow of air in heat-' abstracting relation to the latter, coaxial means connecting said nozzle structure to said casing and comprising an external tube member having therein an internal
  • An apparatus for coating parts with refractory metal oxides and the like comprising a casing having therein a straight-line channel for entry thereinendwise of relatively inflexible frangible oxide rods, said channel having coacting therewith opposed fee-d drums having operative faces of yielding material for receiving therebetween and feeding endwise an oxide rod in the channel whereby as the trailing end of a rod emerges from inbetween the feed drums it is then pushed by a succeeding rod engaged by the drums, an air discharge and gaseous combustion nozzle structure positioned externally of said casing and held in spaced relation therefrom by air-andgas supply means having extending therethrough and in line with said channel a rod passage for passing a rod endwise to the action of said nozzle structure as the rod is fed directly by said feed drums or indirectly fed thereby through at least one succeeding rod engaging it at its trailing end face according as the-trailing end thereof is approaching or has passed beyond said feed drums, and
  • said yielding rodholding means imposes per se a substantially fixed load upon said feed drums, and a shunt motor for driving said feed drums at a selectable rod-feed rate, said shunt motor being provided with means for correspondingly setting the voltage applied to its armature and thereby select the rate of drive of said feed drums whereby said substantially fixed load improves the inherent speed regulation of the motor for the selected speed of its armature.
  • An apparatus for coating parts with refractory metal oxides and the like comprising a casing having therein a straight-line channel for entry therein endwise of relatively inflexible frangible oxide rods, said channel having coacting therewith opposed feed drums having operative faces of yielding material for receiving there-- between and feeding endwise an oxide rod in the channel, said apparatus having a nozzle structure positioned externally of the casing and spaced therefrom in line with said channel by air-and-gas supply means having extending therethrough a rod passage aligned with said channel for passing a rod endwise to the action of said nozzle structure as the rod is fed directly by said feed drums or indirectly fed thcreay through at least one succeeding rod engaging it at its trailing end face according as the trailing end thereof is approaching or has passed beyond said feed drums, there being interposed at the exit end of said rod passage 2.
  • rod gripper device having a central rod passage into which open a plurality of radial recesses with spring-pressed wear-resistant members projecting therefrom and into the rod passage of the device for substantially centering a rod therein and for yieldingly holding it against feeding movement and thereby maintain its trailing end in engagement with a preceding rod pushing it, and means for driving said feed drums at a substantially constant surface speed.
  • a casing having at one end concentrically arranged inner gas-supply and outer air-supply threaded coupling elements of which the inner has a central opening forming the terminus of a straight-line channel in the casing for successive entry therein of relatively inflexible frangible oxide rods, with driven rod-feed means engageable with a rod in said channel to feed it endwise or to push a rod ahead of it in direction toward said coupling element central opening, a nozzle structure positioned externally of said casing and spaced therefrom in line with said channel, said nozzle structure having gas-nozzle and rod-holding means comprising a rod passage through the terminus of which is presented a rod-end to flame produced at the nozzle means and coacting yielding means closely adjacent said rod passage terminus for yieldingly engaging with a rod in said rod passage but with force insufficient to prevent feeding movement thereof and for yieldingly holding it against lengthwise shift after it has passed out of engagement with said feed
  • the means for yieldingly holding the rod against lengthwise shift along the rod passage comprises at least one rotatable element whereby it may partake of wear-reducing substantially rolling contact with the surface of the moving rod.
  • An apparatus for coating parts with refractory metal oxides and the like comprising means forming a raight-line guideway having an entry end and an exit end for the successive entry therein of relatively inflexible frangible oxide rods, said guideway means having externally thereof and adjacent its exit end nozzle means for receiving gaseous medium to produce heat by combustion for fusing the material of a rod presented thereto by way of said exit end and to produce a blast to project fused particles from the rod end, said nozzle having a deflector to deflect said blast, said exit end of said guideway means having associated therewith yielding means for yieldingly engaging with the rod that is at the exit end of said guideway means and for holding it against lengthwise shift along said guideway means, the latter having associated with it adjacent its entry end driven feed means engageable with a rod thereat for transmitting endwise movement thereto to move it towards said exit end of the guideway means, said yielding rod-engaging means adjacent said exit end exerting a holding force on the rod that is insuflicient to
  • a casing having therein a straight-line channel for entry therein endwise of relatively inflexible oxide rods and having driving means for engaging and feeding endwise an oxide rod in the channel whereby as the trailing end of a rod disengages said feeding means it is then pushed by a succeeding rod engaged by said feeding means, a nozzle structure for receiving a gaseous medium to produce a flame for fusing the rod material and having a channel to convey air under pressure to produce a blast for projecting particles fused by the flame, an air deflector plate to deflect the blast away from the axis of the channel, said nozzle structure being positioned externally of said casing and held in spaced relation therefrom by means for conducting gaseous medium to the nozzle structure, said last-mentioned means having extending theret-hrough and in line with said casing channel a rod pas sage for passing a succession of rods endwise to the fusing and blast action of said
  • Apparatus for fusing and atomizing relatively inflexible oxide rods comprising a casing, rod feeding means in the casing, a nozzle, a tube like barrel to conduct air under pressure to the nozzle to produce a blast, a deflector in the nozzle to deflect the air, said barrel having channels to conduct gases of combustion to said nozzle, said barrel having a channel for the rods, and a rod gripper to restrain the rods which have been advanced out of contact with the feeding means from ejection by the blast, the barrel connecting the casing and the rod gripper which is adjacent the nozzle.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
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US440052A 1954-06-29 1954-06-29 Apparatus for coating articles with refractory oxides and the like Expired - Lifetime US2769663A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE547174D BE547174A (fr) 1954-06-29
NL206515D NL206515A (fr) 1954-06-29
NL99881D NL99881C (fr) 1954-06-29
US440052A US2769663A (en) 1954-06-29 1954-06-29 Apparatus for coating articles with refractory oxides and the like
FR1128618D FR1128618A (fr) 1954-06-29 1955-06-15 Appareil pour appliquer un revêtement d'oxydes réfractaires et de substances analogues sur divers objets
GB18602/55A GB770859A (en) 1954-06-29 1955-06-28 Apparatus for coating articles with refractory oxides and the like
CH334658D CH334658A (fr) 1954-06-29 1956-04-20 Pistolet de pulvérisation

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BE (1) BE547174A (fr)
CH (1) CH334658A (fr)
FR (1) FR1128618A (fr)
GB (1) GB770859A (fr)
NL (2) NL206515A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982480A (en) * 1959-09-17 1961-05-02 Gen Motors Corp Metal spray gun
US3013528A (en) * 1957-09-30 1961-12-19 Standard Oil Co Metallizing gun for internal surfaces
US3056558A (en) * 1960-11-30 1962-10-02 Gen Motors Corp Metal spraying apparatus
US3085750A (en) * 1960-12-29 1963-04-16 Metallizing Company Of America Molten material spray gun with laterally deflecting air cap
US3136484A (en) * 1960-06-22 1964-06-09 Metco Inc Angular blast gas cap
DE1264305B (de) * 1960-07-08 1968-03-21 Metco Inc Flammspritzpistole mit einer als Rohr ausgebildeten Spritzkopfverlaengerung
US5074469A (en) * 1988-07-27 1991-12-24 The Perkin-Elmer Corporation Wire pistol
US5255836A (en) * 1988-07-27 1993-10-26 The Perkin-Elmer Corporation Flame spray gun with wire feed control
US5275336A (en) * 1991-12-04 1994-01-04 The Perkin-Elmer Corporation Wire thermal spray gun and method
CN106111412A (zh) * 2016-08-17 2016-11-16 娄土岭 一种喷漆装置
CN109718976A (zh) * 2019-01-14 2019-05-07 沧州天瑞星光热技术有限公司 一种增透膜喷涂镀膜装置以及方法
US20190314831A1 (en) * 2018-04-17 2019-10-17 General Electric Company Coating system and method
CN117467923A (zh) * 2023-10-11 2024-01-30 扬州市松田液压机械有限公司 一种应用于液压杆件及柱塞的表面复合陶瓷涂层制备装置及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825532A1 (de) * 1988-07-27 1990-02-01 Perkin Elmer Corp Drahtpistole mit impulsmodulierter motorsteuerung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE638043C (de) * 1935-01-05 1936-11-09 Wytze Beye Smits Loetkolben
US2227752A (en) * 1938-06-30 1941-01-07 Herbert S Ingham Metal spray gun
FR1062636A (fr) * 1952-07-12 1954-04-26 Metallizing Company Of America Procédé et appareil pour munir d'un revêtement des surfaces fusibles bonnes conductrices de l'électricité

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE638043C (de) * 1935-01-05 1936-11-09 Wytze Beye Smits Loetkolben
US2227752A (en) * 1938-06-30 1941-01-07 Herbert S Ingham Metal spray gun
FR1062636A (fr) * 1952-07-12 1954-04-26 Metallizing Company Of America Procédé et appareil pour munir d'un revêtement des surfaces fusibles bonnes conductrices de l'électricité

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013528A (en) * 1957-09-30 1961-12-19 Standard Oil Co Metallizing gun for internal surfaces
US2982480A (en) * 1959-09-17 1961-05-02 Gen Motors Corp Metal spray gun
US3136484A (en) * 1960-06-22 1964-06-09 Metco Inc Angular blast gas cap
DE1264305B (de) * 1960-07-08 1968-03-21 Metco Inc Flammspritzpistole mit einer als Rohr ausgebildeten Spritzkopfverlaengerung
US3056558A (en) * 1960-11-30 1962-10-02 Gen Motors Corp Metal spraying apparatus
US3085750A (en) * 1960-12-29 1963-04-16 Metallizing Company Of America Molten material spray gun with laterally deflecting air cap
US5074469A (en) * 1988-07-27 1991-12-24 The Perkin-Elmer Corporation Wire pistol
US5255836A (en) * 1988-07-27 1993-10-26 The Perkin-Elmer Corporation Flame spray gun with wire feed control
US5275336A (en) * 1991-12-04 1994-01-04 The Perkin-Elmer Corporation Wire thermal spray gun and method
CN106111412A (zh) * 2016-08-17 2016-11-16 娄土岭 一种喷漆装置
US20190314831A1 (en) * 2018-04-17 2019-10-17 General Electric Company Coating system and method
US10792679B2 (en) * 2018-04-17 2020-10-06 General Electric Company Coating system and method
CN109718976A (zh) * 2019-01-14 2019-05-07 沧州天瑞星光热技术有限公司 一种增透膜喷涂镀膜装置以及方法
CN117467923A (zh) * 2023-10-11 2024-01-30 扬州市松田液压机械有限公司 一种应用于液压杆件及柱塞的表面复合陶瓷涂层制备装置及方法

Also Published As

Publication number Publication date
BE547174A (fr) 1900-01-01
NL206515A (fr) 1900-01-01
GB770859A (en) 1957-03-27
FR1128618A (fr) 1957-01-08
NL99881C (fr) 1900-01-01
CH334658A (fr) 1958-12-15

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