US3048892A - Powder applicator - Google Patents

Powder applicator Download PDF

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Publication number
US3048892A
US3048892A US820044A US82004459A US3048892A US 3048892 A US3048892 A US 3048892A US 820044 A US820044 A US 820044A US 82004459 A US82004459 A US 82004459A US 3048892 A US3048892 A US 3048892A
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US
United States
Prior art keywords
core
rolls
powder
pass
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US820044A
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English (en)
Inventor
Jr Dexter C Davis
John F Freeman
John G Kura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Copperweld Steel Co
Original Assignee
Copperweld Steel Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Copperweld Steel Co filed Critical Copperweld Steel Co
Priority to US820044A priority Critical patent/US3048892A/en
Priority to GB15914/60A priority patent/GB923379A/en
Priority to BE590664A priority patent/BE590664A/fr
Application granted granted Critical
Publication of US3048892A publication Critical patent/US3048892A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/40—Making wire or rods for soldering or welding
    • B23K35/404—Coated rods; Coated electrodes

Definitions

  • this invention pertains to a preferably horizontal helical screw and nozzle feeder cooperating with compacting rolls to produce a densified cladding of such powder material concentrically around the surface of such core with substantially continuous guidance of the powder until it is engaged by the compacting rolls.
  • FIGURE 1 is a view in side elevation of a roll compacting mill stand having a powder applicator device of this invention cooperating therewith;
  • FIGURE 2 is a somewhat enlarged view, partly in section, of the powder applicator shown in FIGURE 1;
  • FIGURE 3 is a partial view of the delivery side of a set of Turks-head rolls in the mill stand of FIGURE 1 looking along the pass line to show the closed compacting pass through to such rolls;
  • FIGURE 4 is a detailed view in section showing a portion of the helical feed screw and tip in said applicator;
  • FIGURE 5 is a side view of the applicator nozzle shown on the applicator in FIGURE 2;
  • FIGURE 6 is a view of such nozzle looking at the discharge end thereof;
  • FIGURE 7 is a view of such nozzle looking at the entry end thereof;
  • FIGURE 8 is a view in section of such nozzle taken along line VIII-VIII of FIGURE 6;
  • FIGURE 9 is aview in side elevation showing a shaver device and an adjustable guide device on the aforementioned mill stand along the pass line;
  • FIGURE 10 is a view in section of the adjustable guide taken along line XX of FIGURE 9.
  • a roll compacting mill stand 10 is shown with a core rod or wire 11 moving along a pass line and issuing from the stand as a definned, compacted green clad rod 11a, such definning being performed by a shaver device 12' described in United States patent application Serial No. 818,715, filed June 8, 1959 for Shaver.
  • Four Turks-head rolls 13 are rotatably mounted on stand 10 to form a closed pass '14 when the rolls are screwed down into engagement with each other with mating surfaces 15 defining longitudinally extending radially directed parting planes intermediate the planes of the respective arcuate grooves 16 around the periphery of each such roll.
  • the vertical pair of rolls 13 is driven by means not illustrated and each of the rolls is provided with a lubricating wiper 17 in advance of the nip of the rolls to apply a substantially non-liquid lubricant to the groove and parting plane surfaces of the respective rolls.
  • scraper blades 18 are suitably mounted following the nip to engage and scrape the mating surfaces or faces of each roll as more fully described in the aforesaid patent application Serial No. 773,125. Such scraper blades keep the mating faces of the rolls free of powder fragments or accretions that might otherwise tend to accumulate upon them.
  • the guide 20 has a base plate 23 secured to mounting plate 22 and vertically extending laterally spaced side walls 24 fastened to the base plate on each side of the vertical center line thereof to act as slideways for upper and lower bearings '25.
  • Each of the bearings is provided with a T-shaped slot to engage a T-head at the bottom of an adjustment hand screw 25 a.
  • Grooved guide wheels 26 are mounted in the respective bearings 25 to rollably engage the green-clad rod 11a, as shown.
  • a cover plate 27 having an opening in the center thereof for the passage of rod 11a completes the assembly and when guide wheels 26 are screwed down at start-up of operations, they will steady the work and help to control its path along the pass line with precision as it moves through the mechanism shown in FIGURE 1.
  • a hopper 28 from which cladding material in the form of powder to be compacted around core 11 is furnished.
  • a vibrator 29 may be attached to hopper 28 to assist in the movement of such powder through an opening 30 into a cas ing 31 coaxial with the pass line and having an arbor 32 therein with a single helical screw flight 33 afiixed thereto or integral therewith.
  • Arbor 32 is hollow and provided with a coaxial longitudinally extending opening 34 therethrough through which core '11 passes along the pass line.
  • the end 35 of arbor 32 is fixed to a sprocket 36 which is driven by a chain 37 at a selected speed by a motor or other power means (not shown) in a powder feeding direction as shown by arrow 48.
  • a thrust collar 38 is mounted on arbor 32 and engages a thrust bearing 39 fixed to casing 31.
  • roller thrust bearings 40 are provided to longitudinally fix arbor 32 while permitting it to rotate.
  • the applicator 19 is secured in turn to a fixed bracket 41 rigidly secured to the frame of stand 10.
  • one end 4-2 of casing 31 is in the form of a flange rigidly held in a transverse direction by a clamping ring 43 bolted to the upper part of bracket 41.
  • the discharge end of arbor 32 is provided with a counterbored and tapped opening to receive the threaded shank of a tapered tip 49 having an axial opening therethrough which is a continuation of opening 34.
  • An Allen screw 50 may be provided to lock tip 49 in place with the head of the Allen screw flush with the surface of arbor 32. Feeding of the cladding powder by flight 33 occurs when the flight face 46 thereof urges the powder toward tip 49 and a nozzle 44 surrounding the discharge end of the helical feed screw and bridging the distance between it and the nip of the rolls 13.
  • the base of face 46 may be provided with a fillet 45 and avoidance of sticking appears to be promoted by relieving the rearward portion 47 of the crest of flight 33 behind the forward edge thereof which sweeps very close to the interior of the case 31 in the course of a feeding operation.
  • the surfaces of the casing interior and helical feed screw, tip and nozzle which come in contact with such powder are polished, or chromium plated, or both.
  • Such guide portion 34a cooperates with guide 20 in such achievement and any tendency to eccentricity may be counteracted by vertical adjustment of the axis of the clad rod 11a by corre- Zponding adjustment of the position of grooved wheels
  • the nozzle 44 is provided with a flange 51 which is secured in position by being fixed to the face of flange 42.
  • Nozzle 44 is hollow and coaxial with the axis of the metal work or pass line passing through the center of the arbor 32 and pass 14.
  • the trough surfaces fit very close to the open side of the grooves 16 as illustrated in FIGURE 2 and terminate at 54 where the nozzle material is also very thin so that as the powder cladding in contact with nozzle interior surface 55 leaves the nozzle, it will make an uninterrupted, smooth transition to engagement with grooves 16 for the rolling thereof to compact such powder against the core 11 as the grooves move through their contact are and the narrowest portion of the pass at the plane through the axes of the respective rolls 13.
  • the surface 55 in nozzle 44 is tapered in correlation with the taper of surface 56 on tip 49 and the volume of powder cladding fed by the arbor 32 and flight 33 at the selected speed so that there is a positive feeding without significant cross sectional constriction of the cladding powder before it is engaged in the groove nip of the rolls '13.
  • uniformity of cladding around the circumference of the core and along the length thereof is obtainable without gaps, on the one hand, and without detrimental variation in density, or jamming due to interlocking of the powder particles under pressure which occurs with some materials, on the other hand.
  • An air passage 57 is drilled through flange 42 and continued by a continuation passage 5711 through nozzle 44 to the interior thereof.
  • a fitting 58 is provided at the head of the passage and used to connect an air hose, for example, to be applied thereto to clean out the nozzle 44 upon the termination of a production run of material or before the inception of a new run, or otherwise, as desired. During a cladding operation, no air is forced through the passage 57.
  • a metal powder material applicator for a metal rod or wire core moving along substantially a horizontal pass line apparatus comprising, in combination, a plurality of Turks-hea-d rolls each having a peripheral groove together defining a substantially circular closed pass in the nip of said rolls coaxial with said pass line, a substantially horizontal helical sorew feeder for said powder material for cladding having a casing coaxial with said pass line, said casing having a smooth interior surface, a coaxial substantially cylindrical arbor in.
  • said casing having a longitudinal passage therethrough for said core, a helical flight on the exterior of said arbor, said flight being substantially cylindrical and having a substantially uniform pitch, a smooth substantially cylindrical tapering tip at the front end of said arbor having a coaxial passage with a narrower diameter guide portion at the discharge end thereof for said core, a nozzle forming the inner end of said casing and having a smooth interior surface tapering in the direction of movement of said pass line, said nozzle extending to said rolls and having feathered rib and trough portions to fit into the nip of said rolls without substantial frictional engagement therewith to provide a substantially continuous passageway from the end of said flight into said closed pass around said core, means for correlating the rotation of said arbor and flight with the movement of said rolls and core, and guide means on the dis-charge side of said pass for adjusting the axis of a compacted green clad core cooperating with. said guide portion to regulate concentrioity of said cladding relative to said core.
  • a metal powder material applicator for a metal rod or wire core moving along a substantially horizontal pass line comprising, in combination, a plurality of rolls each having a peripheral groove together defining a closed pass in the nip of said rolls coaxial with said pass line, a substantially horizontal helical screw feeder for said powder material for cladding coaxial with said pass line, said feeder having a casing with a smooth cylindrical interior surface, a substantially cylindrical arbor in said feeder having a longitudinal passage for said core therethrough coaxial with said pass line, a helical flight on the exterior of said arbor, said flight being substantially cylindrical and having a substantially uniform pitch, a smooth substantially cylindrical tapered tip at the front end of said arbor having a passage coaxial with the passage through said arbor and a nozzle forming the inner end of said feeder and having a smooth conical interior surface converging gradually in the direction of movement of said pass line, the space within said nozzle being correlated substantially to avoid compaction of and gaps in said powder material during feeding thereof, said nozzle extending between the end
  • a powder applicator as set forth in claim 2 in which said flight is a single thread flight and provided with a filleit at the base of the feeding face thereof and a slope for relief toward said arbor behind the outermost edge of said feeding face.
  • a powder applicator as set forth in claim 2 in which said flight is mounted on a portion of said arbor having a uniform diameter, said tip is provided with a narrower diameter guide portion in said passage for said core at the discharge end of said tip, and guide means with adjustable grooved guide wheels on the discharge side of said pass to regulate axial coincidence of said core and cladding.
  • a metal powder material applicator for an elongated metal rod or wire core moving along a pass line comprising, in combination, a plurality of rolls having a groove together defining a substantially closed pass in the nip of said rolls normal to and concentric with said pass line, a helicai screw feeder for said powder material for cladding coaxial with said pas-s line, said feeder having a casing with a smooth cylindrical surface, a substantially cylindrical helical screw member in said casing having a longitudinal passage for said core therethrough coaxial with said pass line, said member having a screw flight thereon substantially cylindrical, of uniform pitch and terminating between said pass and a plane normal to said pass line and tangent to the peripheries of said rolls, a nozzle comprising the inner end of said casing extending up :to said rolls to form a substantially continuous annular passageway from said flight into said pass, said nozzle having a smooth interior surface around said core tapering in the direction of said pass, means including the space Within said nozzle for said
  • apparatus comprising, in combination, a plurality of rolls having a groove defining a substantially closed pass in the nip of said rolls coaxial with said pass line, a helical screw feeder for said powder material for cladding coaxial with said pass line, said feeder having a casing with a smooth cylindrical interior surface, a helical screw member in said feeder having a longitudinal passage for said core therethrough coaxial with said pass line, said member having a screw portion therein substantially cylindrical and of uniform pitch, a nozzle comprising the inner end of said casing and extending substantially into engagement with said rolls, said nozzle having a smooth interior tapering in the direction of movement of said core and forming a substantially continuous noncompacting passageway of gradually narrowing diameter around said core between said screw portion and said closed pass, said nozzle having portions to fit up close to said rolls and pass, and guide means on the discharge side of said closed pass for adjusting the axis of a
  • metal powder cladding for an elongated metal rod or wire core comprising, in combination, moving an elongated rod or wire core along a work line toward and through a closed pass defined by rolls, feeding a continuous enveloping generally cylindrical layer of powder cladding metal in the same direction by a substantially cylindrical screw having a relatively uniform pitch concentrically spaced from the surface of said core and substantially without volumetric constriction of said cladding metal, guiding the outside and inside of said layer along smooth sliding tapering surfaces into gradual engagement with the surface of said core in the vicinity of said pass substantially without volumetric constriction of said cladding metal and continuing said guiding of the outside of said layer and said engagement substantially without volumetric constriction of said cladding metal to the place where said layer in engagement with said core is engaged by the nip of said rolls, and rolls engaging the outside of said layer substantially immediately upon termination of said guiding to compact said layer against said core.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Wire Processing (AREA)
  • Coating Apparatus (AREA)
US820044A 1959-06-12 1959-06-12 Powder applicator Expired - Lifetime US3048892A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US820044A US3048892A (en) 1959-06-12 1959-06-12 Powder applicator
GB15914/60A GB923379A (en) 1959-06-12 1960-05-05 Apparatus and method for concentrically applying a powdered material to an elongated work core moving along a pass line
BE590664A BE590664A (fr) 1959-06-12 1960-05-09 Appareil et procédé pour appliquer concentriquement un matériau en poudre à un noyau allongé constituént par une pièce à travailler se déplaçant le long d'une cannelure

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US820044A US3048892A (en) 1959-06-12 1959-06-12 Powder applicator

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073032A (en) * 1976-11-24 1978-02-14 Packwood Ralph V Nut cracking machine
US5040589A (en) * 1989-02-10 1991-08-20 The Dow Chemical Company Method and apparatus for the injection molding of metal alloys
US5836372A (en) * 1995-09-01 1998-11-17 Takata Corporation Method and apparatus for manufacturing light metal alloy
US5983976A (en) * 1998-03-31 1999-11-16 Takata Corporation Method and apparatus for manufacturing metallic parts by fine die casting
US6135196A (en) * 1998-03-31 2000-10-24 Takata Corporation Method and apparatus for manufacturing metallic parts by injection molding from the semi-solid state
US6474399B2 (en) 1998-03-31 2002-11-05 Takata Corporation Injection molding method and apparatus with reduced piston leakage
US6540006B2 (en) 1998-03-31 2003-04-01 Takata Corporation Method and apparatus for manufacturing metallic parts by fine die casting
US6666258B1 (en) 2000-06-30 2003-12-23 Takata Corporation Method and apparatus for supplying melted material for injection molding
US6742570B2 (en) 2002-05-01 2004-06-01 Takata Corporation Injection molding method and apparatus with base mounted feeder
US20040231820A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Method and apparatus for manufacturing metallic parts by die casting
US20040231821A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Vertical injection machine using three chambers
US20040231819A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Vertical injection machine using gravity feed
CN120388804A (zh) * 2025-06-12 2025-07-29 无锡市欧润杰电缆科技有限公司 一种用于电缆合股工序的保护层过粉装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE756171A (fr) * 1969-09-15 1971-03-15 Deering Milliken Res Corp Appareil pour extruder un revetement autour d'une ame ou cordon
GB8502439D0 (en) * 1985-01-31 1985-03-06 Fusion Plastics Ltd Thermoplastic pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US888299A (en) * 1908-02-07 1908-05-19 Coe Brass Mfg Company Extrusion-machine.
US1199080A (en) * 1916-07-03 1916-09-26 Lloyd Jones Extrusion of metal bodies.
US2183959A (en) * 1937-06-25 1939-12-19 Henley Extrusion Machine Compa Metal extrusion machine
US2760229A (en) * 1952-09-20 1956-08-28 Lewis Eng Co Apparatus for applying plastic coating to wire
US2790202A (en) * 1952-03-31 1957-04-30 Lorenian Zareh Method and apparatus for manufacturing pencils

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US888299A (en) * 1908-02-07 1908-05-19 Coe Brass Mfg Company Extrusion-machine.
US1199080A (en) * 1916-07-03 1916-09-26 Lloyd Jones Extrusion of metal bodies.
US2183959A (en) * 1937-06-25 1939-12-19 Henley Extrusion Machine Compa Metal extrusion machine
US2790202A (en) * 1952-03-31 1957-04-30 Lorenian Zareh Method and apparatus for manufacturing pencils
US2760229A (en) * 1952-09-20 1956-08-28 Lewis Eng Co Apparatus for applying plastic coating to wire

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073032A (en) * 1976-11-24 1978-02-14 Packwood Ralph V Nut cracking machine
US5040589A (en) * 1989-02-10 1991-08-20 The Dow Chemical Company Method and apparatus for the injection molding of metal alloys
US6241001B1 (en) 1995-09-01 2001-06-05 Takata Corporation Method and apparatus for manufacturing light metal alloy
US5836372A (en) * 1995-09-01 1998-11-17 Takata Corporation Method and apparatus for manufacturing light metal alloy
US6739379B2 (en) 1995-09-01 2004-05-25 Takata Corporation Method and apparatus for manufacturing light metal alloy
US6065526A (en) * 1995-09-01 2000-05-23 Takata Corporation Method and apparatus for manufacturing light metal alloy
US6276434B1 (en) 1998-03-31 2001-08-21 Takata Corporation Method and apparatus for manufacturing metallic parts by ink injection molding from the semi-solid state
US6942006B2 (en) 1998-03-31 2005-09-13 Takata Corporation Injection molding method and apparatus with reduced piston leakage
US6283197B1 (en) 1998-03-31 2001-09-04 Takata Corporation Method and apparatus for manufacturing metallic parts by fine die casting
US6474399B2 (en) 1998-03-31 2002-11-05 Takata Corporation Injection molding method and apparatus with reduced piston leakage
US6540006B2 (en) 1998-03-31 2003-04-01 Takata Corporation Method and apparatus for manufacturing metallic parts by fine die casting
US6655445B2 (en) 1998-03-31 2003-12-02 Takata Corporation Injection molding method and apparatus with reduced piston leakage
US6135196A (en) * 1998-03-31 2000-10-24 Takata Corporation Method and apparatus for manufacturing metallic parts by injection molding from the semi-solid state
US20040074626A1 (en) * 1998-03-31 2004-04-22 Takata Corporation Injection molding method and apparatus with reduced piston leakage
US5983976A (en) * 1998-03-31 1999-11-16 Takata Corporation Method and apparatus for manufacturing metallic parts by fine die casting
US6666258B1 (en) 2000-06-30 2003-12-23 Takata Corporation Method and apparatus for supplying melted material for injection molding
US6789603B2 (en) 2002-05-01 2004-09-14 Takata Corporation Injection molding method and apparatus with base mounted feeder
US6742570B2 (en) 2002-05-01 2004-06-01 Takata Corporation Injection molding method and apparatus with base mounted feeder
US20040231820A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Method and apparatus for manufacturing metallic parts by die casting
US20040231821A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Vertical injection machine using three chambers
US20040231819A1 (en) * 2003-05-19 2004-11-25 Takata Corporation Vertical injection machine using gravity feed
US20050022958A1 (en) * 2003-05-19 2005-02-03 Takata Corporation Method and apparatus for manufacturing metallic parts by die casting
US6880614B2 (en) 2003-05-19 2005-04-19 Takata Corporation Vertical injection machine using three chambers
US6945310B2 (en) 2003-05-19 2005-09-20 Takata Corporation Method and apparatus for manufacturing metallic parts by die casting
US6951238B2 (en) 2003-05-19 2005-10-04 Takata Corporation Vertical injection machine using gravity feed
US7150308B2 (en) 2003-05-19 2006-12-19 Takata Corporation Method and apparatus for manufacturing metallic parts by die casting
US7296611B2 (en) 2003-05-19 2007-11-20 Advanced Technologies, Inc. Method and apparatus for manufacturing metallic parts by die casting
CN120388804A (zh) * 2025-06-12 2025-07-29 无锡市欧润杰电缆科技有限公司 一种用于电缆合股工序的保护层过粉装置

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BE590664A (fr) 1960-11-09
GB923379A (en) 1963-04-10

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