US3540114A - Method of forming fine filaments - Google Patents

Method of forming fine filaments Download PDF

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Publication number
US3540114A
US3540114A US684675A US3540114DA US3540114A US 3540114 A US3540114 A US 3540114A US 684675 A US684675 A US 684675A US 3540114D A US3540114D A US 3540114DA US 3540114 A US3540114 A US 3540114A
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United States
Prior art keywords
filaments
lubricant
sheath
bundle
forming
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US684675A
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English (en)
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Peter R Roberts
Albert D Martin
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Brunswick Corp
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Brunswick Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of rods or wire
    • B21C37/047—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of rods or wire of fine wires
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49014—Superconductor
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49801—Shaping fiber or fibered material
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12431—Foil or filament smaller than 6 mils

Definitions

  • the lubricant comprises a material capable of forming a film having a high tenacity characteristic whereby the film is maintained under the extreme pressure conditions of the drawing process. Upon completion of the constricting operation, the tubular sheath is removed. If desired, the lubricant may also be removed from the resultant filaments.
  • This invention relates to fine filaments and in particular to the forming of fine filaments by a multiple end constriction process.
  • the present invention comprehends an improved method of forming such filaments wherein substantial economies may be effected in the use of a novel matrix means which may be readily and economically provided on the elongated elements and which may be readily and economically removed therefrom.
  • the present invention further comprehends such an improved method of forming fine filaments wherein the matrix means permits separability of the filaments without removal thereof from the filaments if so desired.
  • a principal feature of the present invention is the provision of a new and improved method of forming fine filaments.
  • Another feature of the invention is the provision of such a method of forming fine filaments utilizing an ultra-thin film matrix means.
  • a further feature of the present invention is the provision of such a method of forming fine filaments wherein the film matrix means comprises a lubricant material.
  • Still another feature of the present invention is the provision of such a method of forming fine filaments wherein the matrix comprises a film of lubricant material having a high tenacity characteristic capable of maintaining the film under extreme pressure conditions.
  • Yet another feature of the present invention is the provision of such a method of forming fine filaments wherein the elongated elements are bundled in a tubular sheath formed of a drawable material and the sheathed bundle is constricted as by drawing to reduce the elements to a filamentary diameter while the elements are maintained separate by the maintained film of lubricant thereon.
  • Still another feature of the present invention is the provision of such a method of forming fine filaments wherein the lubricant material comprises a material such as oil, grease, soap, silicone, plastics such as Teflon, and the like.
  • a yet further feature of the present invention is the provision of such a method of forming fine filaments wherein the sheath may be formed of a material having a hardness equal to or greater than the hardness of the elements.
  • Still another feature of the present invention is the provision of such a method of forming fine filaments wherein the elements comprise metal wires of relatively small commercially available diameter.
  • a further feature of the present invention is the provision of such a method of forming fine filaments wherein the elements are loosely placed in the sheath and the sheathed bundle is firstly constricted to compact the assembly without substantial constriction of the elements.
  • a yet further feature of the present invention is the provision of such a method of forming fine filaments wherein the lubricant material is provided on the elements prior to the provision thereof as a bundle.
  • Another feature of the present invention is the provision of such a method of forming fine filaments wherein the lubricant comprises a high temperature resistant material and the constricting step comprises a plurality of constricting operations with heat treating of the constricted bundle therebetween.
  • Yet another feature of the invention is the provision of such a method of forming fine filaments further including the step of plating the elements with a metal prior to the bundling thereof.
  • a further feature of the present invention is the provision of such a method of forming fine filaments wherein the bundle of elements occupies substantially 91% of the inner cross-section of the sheath prior to the constricting operation.
  • Yet another feature of the present invention is the provision of such a method of forming fine filaments including the step of drawing the elements through a die while providing the lubricant material thereto to form the film thereon prior to the bundling step.
  • a yet further feature of the invention is the provision of such a method of forming fine filaments wherein lubricant material is squeezed transversely outwardly and axially from the sheath during the constricting step.
  • a further feature of the present invention is the provision of such a method of forming fine filaments wherein lubricant material is squeezed outwardly from the end of the sheath during the constricting step.
  • Another feature of the present invention is the provision of such a method of forming fine filaments further including the step of removing the lubricant material from the filamentary elements.
  • FIG. 1 is a schematic block diagram illustrating a method of forming fine filaments embodying the invention
  • FIG. 2 is a fragmentary enlarged diagrammatic sec tion of a lubricant applying means thereof
  • FIG. 3 is a perspective view of a sheathed bundle of elongated elements illustrating a further step thereof;
  • FIG. 4 is a diametric section of a constricting die means illustrating a further step thereof;
  • FIG. 5 is a vertical section of a leaching apparatus illustrating the step of sheath removal thereof
  • FIG. 6 is a vertical section of a lubricant removing apparatus illustrating still another step thereof
  • FIG. 7 is a diagrammatic vertical section of a modified form of apparatus for applying lubricant material to the wire
  • FIG. 8 is a diagrammatic elevation of a modified method of sheathing the bundle by means of a strip cladder.
  • FIG. 9 is a diagrammatic elevation illustrating another method of sheathing the bundle by a spiral winding cladder.
  • a method of forming fine filaments comprises the steps of applying a film forming lubricant material 10 to an elongated element, or wire, 11, bundling a plurality of lengths of the elongated film coated elements in a tubular sheath 12 to define a sheathed bundle 13, constricting the sheathed bundle 13 to compact the bundle without substantial constriction of the elements 11 therein, drawing of the compacted bundle 13' to reduce the diameter thereof to a preselected small diameter wherein the wires 11 define fine filaments 14, removing the sheath 12 in a suitable apparatus generally designated 15, and removing the lubricant film in a suitable apparatus generally designated 16 to provide the desired fine diameter filaments.
  • the invention comprises forming an ultra-thin, nonmetallic wire supporting means in the bundle 13 permitting the bundle to be constricted, as by cold drawing, without permitting fusion of the individual wires to each other by maintaining the lubricant film therebetween notwithstanding the application of extreme pressure conditions to the film as occur in such drawing processes.
  • ultra-thin separation means extremely high efiiciences in the manufacture of extremely fine diameter filaments are obtained permitting the resultant filament material to compete favorably economically with conventional textile materials.
  • the invention comprehends the use of different film forming lubricant materials as is discussed more fully hereinafter and is applicable to the forming of such fine filaments from many different drawable materials, such as drawable metals, as is brought out more fully hereinafter.
  • the filaments may be of relatively small diameter and, illustratively may be of extremely small diameter, such as under 12 microns.
  • different methods of applying the lubricant material to the wire may be employed and different suitable methods of providing the bundle of wires in the surrounding tubular sheath may similarly be utilized.
  • the drawing process may be conducted in conjunction with annealing or heat treating steps or entirely as a cold working process as desired.
  • the invention comprehends utilizing a wire of a commercially available size such as 20 mil diameter wire permitting the constriction thereof to be performed in the most economical region of manufacturing cost so as to provide an end product fine filament at minimum cost.
  • a wire of a commercially available size such as 20 mil diameter wire permitting the constriction thereof to be performed in the most economical region of manufacturing cost so as to provide an end product fine filament at minimum cost.
  • Different wire materials will obviously have optimum cost relationships at different starting diameters and the desired final diameter of the fine filaments similarly affects the desirable starting diameter of the wire.
  • the starting wire size providing maximum economy in the manufacture of fine filaments would appear to be in the range of from 10 to 90 mils Where the final fine filament diameter is 1 mil or less.
  • the wire material may be any suitable drawable material and includes a wide range of metals and alloys, such as stainless steel, aluminum, nickel, copper alloys, tantalum, niobium, precious metals, platinum, etc.
  • the wire may be provided as a homogenous wire or may be provided with a surface layer, such as an electrolytically deposited copper plating .on an aluminum wire.
  • the stainless steel materials may comprise conventional type 302 and 304 stainless steels and high chromium, high nickel 300 series stainless steels that remain essentially austenit ic throughout massive cold reduction.
  • An excellent exam ple of aluminum wire for use in the process is aluminum- 1100.
  • An example of nickel wire providing excellent characteristics for use in the process is NI-270.
  • the lubrication material preferably has a high tenacity characteristic capable of maintaining a film layer on the wires under the extreme conditions occurring in drawing the bundle through the constricting dies.
  • the term lubricant as used herein comprehends organic and inorganic materials having the properties of a high degree of tenacity with coherence and low shear strength or the ability to deform for substantial reductions of section.
  • the film forming lubricant material may comprise a high tenacity oil such as Lubriplate No.
  • FIG. 2 One method of applying the lubricant material such as soap lubricant material is illustrated in FIG. 2 wherein the Wire 11 is drawn through a die 17 while the soap material 10 is applied to the wire. It has been found that such application of the soap to the wire provides a uniform thin coating thereon suitable for providing the desired ultra-thin lubricant film in the constricting steps.
  • a modified apparatus for applying the lubricant material to the wire may be seen to comprise a tank 30 containing a body of suitable liquid lubricant through which the wires are longitudinally passed to pick up a coating of the lubricant.
  • Other methods of applying the lubricant will be obvious to those skilled in the art.
  • the wires 11 may be provided in the form of short length rectilinear wires, as shown in FIG. 3, in the tubular sheath 13 by suitably packing them in parallel relationship therein.
  • the densest possible packing arrangement is one wherein the wires are arrangd in hxagonal array utilizing 91% of the bore of the sheath 13. It has been found, however, that excellent uniform filaments 18 may be formed wherein slightly less than the optimum packing is effected in the sheath such as for providing ease of handling and preventing crossovers of the wires. To assure desired uniform filament configuration, it is desirable to cause the sheathed bundle of wires 11 to be relatively close packed prior to the drawing operation.
  • This close packing may be effected by slowly drawing the sheathed bundle through a suitable die 31 to constrict the sheath 12 while not substantially constricting the wires 11 therein but rather causing them to approximate a close packed hexagonal configuration in the major portion of the cross-section thereof.
  • An excess of lubricant material on the wires 11 will be squeezed out the end of the sheath at this time to permit the closing down of the voids between the Wires to permit the lubricant material to form a thin film on the wires.
  • the removal of the excess lubricant material may also be effected during the initial drawing steps so that ultimately the drawing operation is effected *with the lubricant material on the respective wires being present in an ultra-thin layer whereby the cross-section of the composite structure within the sheath is almost 100% wire material.
  • the lubricant material is provided on the wires as by application there to while the wire is drawn through a die, the original film is extremely thin and very little extrusion of the lubricant from the ends of the sheath occurs during the compacting and drawing steps.
  • FIG. 8 Another method of sheathing the bundle of wires 11 is illustrated in FIG. 8 wherein the bundle 19 is embraced by a tubularly folded strip 20 which may be retained in the tubular configuratiton as by the applicatiton of a weld 21 joining the juxtaposed inturned edges of the strip by a suitable conventional welding apparatus 22.
  • This method of applying the sheath provides the highly desirable feature of permitting a continuous delivery of the sheathed bundle thereby permitting further reduction in the cost of the filament formation.
  • FIG. 9 A still further method of sheathing the bundle 19 of wires is shown in FIG. 9 to comprise a helical wrapping of the bundle by a strip 24 to define a sheath 23 which may be maintained in the helical configuration solely by compacting thereof or by application of suitable weld 25 by the weld apparatus 22 to the juxtaposed edges of the helical turns.
  • the material of which the sheath is formed is preferably one having a hardness at least equal to the hardness of the wires 11. It has been found that by maintaining this hardness relationship, the sheath is firstly constricted as it is drawn through the die while the wires more closely arrange themselves in the final generally hexagonal array with the excess lubricant material being forced outwardly from therebetween. The resultant constriction is evenly distributed across the section of the sheathed bundle to provide optimum uniformity in the resultant filaments 18.
  • One example of such a hardness relationship is that obtained with nickel 270 wires and Monel sheathing. Another example is that obtained With aluminum 1100 wires in a copper tube.
  • the sheathing material is advantageously as hard or harder than the wire material
  • the sheathing material should be one having suitable drawing characteristics for facilitated constriction of the sheathed bundle in the subsequent drawing steps. More specifically, where the sheathing material is quite thin, such as occupying less than approximately 10% of the total volume, the hardness thereof may be less than that of the wire material.
  • the drawing operation may be conducted in a number of suitable drawing steps.
  • heat treating of the sheathed bundle between the drawing steps may be effected.
  • the heat treating may comprise annealing.
  • the lubricant material should be one having a high temperature resistant characteristic.
  • the lubricant material should further be selected to avoid interaction with the wire material at the elevated temperatures.
  • carbonaceous lubricant materials which would tend to in? troduce carbon into the outer surface of the wire at elevated temperatures should be avoided Where such carbon introduction would adversely affect the wire composititon, such as where the wires are formed of 300 series stainless steel.
  • the sheath is preferably formed of a material permitting ready separation thereof from the final constricted sheathed bundle 13".
  • the sheath 12 is formed of Monel metal or copper, it may be removed by suitable treatment by nitric acid as illustratively shown in FIG. 5.
  • the filaments may be passed through a bath of suitable material to remove the lubricant.
  • the bath 16 may comprise a suitable oil solvent.
  • the copper may be removed satisfactorily by use of concentrated, or red fuming, nitric acid which minimizes attack of the aluminum.
  • the copper may be removed by anodic dissolution in a suitable electrolyte.
  • EXAMPLE 1 0.092 inch diameter aluminum 1100 commercial rivet wire having zero temper was drawn to 0.03 inch diameter through a powdered sodium soap lubricant to provide a residual soap film thereon.
  • the resulting straight tube had a .580 inch OD. and approximately .502 inch ID.
  • the final bundle 13" was then treated with 50 volume percent nitric acid to remove the sheath and provide the final filaments 18 having a diameter of 0.0004 inch.
  • the filament material was then subjected to different heat treatments to provide the filaments with different ultimate tensile strengths.
  • the tensile strength of the filaments as drawn were approximately 65,000 psi. for 0.726 mil diameter filaments released from the .01126 inch O.D. composite.
  • EXAMPLE 2 0.062 inch diameter nickel 270 wire was drawn to 0.04 inch diameter and annealed at 1800 F. 98 lengths of this wire, each 12 inches long, were firstly coated with General Electric Company silicone oil (Versilube type F-44) and wrapped in two turns of commercial 1 mil thick aluminum foil. The bundle of 98 wires was placed in a 0.5 inch OD. x 0.46 inch I.D. Monel 400 tube which had previously been annealed at 1800 F. The bundle was then drawn down under the following drawing schedule:
  • the final sheathed bundle 13' had an CD. of 0.0126 inch wherein the filaments had a diameter of 1.11 mils with an ultimate tensile strength of 135,200 p.s.i. as drawn.
  • the filaments were released from the sheathed bundle by treatment with warm nitric acid solution to release the Monel sheathing and then with caustic soda which released the aluminum foil (the aluminum foil serving to protect the nickel against attack by the nitric acid).
  • EXAMPLE 3 185 lengths of annealed 310 stainless steel having a diameter of 0.012 inch and coated with Versilube silicone oil were placed in a 0.216 inch OD. x 0.195 inch I.D. Monel 400 tube and the sheathed bundle drawn down through RA decrements to a final sheathed bundle 13 having an OD of 0.0079 inch wherein the filaments 18 were of 0.504 mil diameter. Filaments of this size showed a strength of 264,000 p.s.i. with a total elongation of 1.40% at 2 inches gage length.
  • EXAMPLE 4 189 lengths of annealed 7RE12 stainless steel having a diameter of 0.0126 inch were coated with Versilube silicone oil and inserted as a bundle into a tube of Monel 400 metal having a 0.216 OD. and a 0.195 ID. The composite was drawn down by 10% RA decrements to a final CD. of 0.0072 inch wherein the filaments had a diameter of 0.449 mil. The ultimate tensile strength was found to be 133,500 p.s.i. on 2 inch gage length filaments.
  • a method of forming filaments comprising the steps of: providing a bundle of elongated elements formed of drawable metal arranged coaxially in a tubular sheath formed of a drawable material, said elements having a free metal outer surface; providing on said outer surface of each of said elements a film of lubricant material having a high tenacity characteristic capable of maintaining said film under extreme pressure conditions; constricting said sheathed bundle to reduce the said elements to filamentary diameter while maintaining said film on said outer metal surface whereby said filamentary elements are maintained separate; and removing the sheath.
  • the method of forming filaments as set forth in claim 1 further including the step of plating the elongated elements with a metal prior to the bundling thereof.
  • a method of forming filaments comprising the steps of: providing a bundle of elongated elements formed of a drawable material arranged coaxially in a tubular sheath formed of a drawable material; providing on each of said elements a film of lubricant material having a high tenacity characteristic capable of maintaining said film under extreme pressure conditions; constricting said sheathed bundle to reduce the said elements to filamentary diameter; and removing the sheath, said elements being formed of aluminum and said lubricant comprising a dry soap film coating.
  • a method of forming filaments comprising the steps of: providing a bundle of elongated elements formed of a drawable material arranged coaxially in a tubular sheath formed of a drawable material; providing on each of said elements a film of lubricant material having a high tenacity characteristic capable of maintaining said film under extreme pressure conditions; constricting said sheathed bundle to reduce the said elements to filamentary diameter; and removing the sheath, said lubricant comprising a plastic.
  • a method of forming filaments comprising the steps of: providing a bundle of elongated elements formed of a drawable material arranged coaxially in a tubular sheath formed of a drawable material; providing on each of said elements a film of lubricant material having a high tenacity characteristic capable of maintaining said film under extreme pressure conditions; constricting said sheathed bundle to reduce the said elements to filamentary diameter; and removing the sheath, said lubricant comprising Teflon.
  • a method of forming filaments comprising the steps of: providing a bundle of elongated elements formed of a drawable material arranged coaxially in a tubular sheath formed of a drawable material; providing on each of said elements a film of lubricant material having a high tenacity characteristic capable of maintaining said film under extreme pressure conditions; constricting said sheathed bundle to reduce the said elements to filamentary diameter; and removing the sheath, said elongated elements being formed of aluminum.

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742578A (en) * 1968-08-15 1973-07-03 Philips Corp Method of manufacturing a regenerator
US3882587A (en) * 1972-12-06 1975-05-13 Rau Fa G Method of producing a fibre-reinforced material
US3943619A (en) * 1974-10-02 1976-03-16 Raymond Boyd Associates Procedure for forming small wires
US3946348A (en) * 1971-03-22 1976-03-23 Bbc Aktiengesellschaft Brown, Boveri & Cie. Radiation resistant ducted superconductive coil
US3964283A (en) * 1974-11-13 1976-06-22 Western Electric Company, Inc. Production of multiple elongated products such as wire
US4027511A (en) * 1974-11-13 1977-06-07 Western Electric Company, Inc. Apparatus for producing multiple elongated products such as wires
US4044447A (en) * 1971-03-02 1977-08-30 Nippon Seisen, Co., Ltd. Method of simultaneously drawing a number of wire members
US4044457A (en) * 1976-04-01 1977-08-30 The United States Of America As Represented By The United States Energy Research And Development Administration Method of fabricating composite superconducting wire
US4118845A (en) * 1969-04-01 1978-10-10 Brunswick Corporation Apparatus for producing fine metal filaments
US4205119A (en) * 1978-06-29 1980-05-27 Airco, Inc. Wrapped tantalum diffusion barrier
US4261099A (en) * 1979-07-27 1981-04-14 Westinghouse Electric Corp. Method for making multi-element brushes
US4323186A (en) * 1980-08-18 1982-04-06 Polymet Corporation Manufacture of high performance alloy in elongated form
US5034857A (en) * 1989-10-06 1991-07-23 Composite Materials Technology, Inc. Porous electrolytic anode
US5179778A (en) * 1992-02-25 1993-01-19 Dickson Lawrence J Method and means for producing disks of tightly packed on-end aligned fibers
US5245514A (en) * 1992-05-27 1993-09-14 Cabot Corporation Extruded capacitor electrode and method of making the same
US5282310A (en) * 1992-12-28 1994-02-01 Xerox Corporation Method for manufacturing a fibrillated pultruded electronic component
US5495668A (en) * 1994-01-13 1996-03-05 The Furukawa Electric Co., Ltd. Manufacturing method for a supermicro-connector
US5525423A (en) * 1994-06-06 1996-06-11 Memtec America Corporation Method of making multiple diameter metallic tow material
US5584109A (en) * 1994-06-22 1996-12-17 Memtec America Corp. Method of making a battery plate
US5686394A (en) * 1987-05-18 1997-11-11 Sumitomo Electric Industries, Ltd. Process for manufacturing a superconducting composite
WO1998021004A1 (fr) * 1996-11-12 1998-05-22 Memtec America Corporation Processus de fabrication de fibres metalliques fines
US5890272A (en) * 1996-11-12 1999-04-06 Usf Filtration And Separations Group, Inc Process of making fine metallic fibers
WO1999024216A1 (fr) * 1997-11-12 1999-05-20 Usf Filtration And Separations Group, Inc. Procede de fabrication de fibres metalliques fines et ultrafines
EP1127629A1 (fr) * 2000-02-25 2001-08-29 Bridgestone Corporation Procédé d'étirage en paquet et procédé pour la fabrication de filaments métalliques
US6381826B1 (en) * 2001-02-21 2002-05-07 Usf Filtration & Separations Group, Inc. Process for producing high quality metallic fiber mesh
WO2002022922A3 (fr) * 2000-09-11 2002-06-13 Usf Filtration & Separations Installation et procede de fabrication pour cable de fibres metalliques de haute qualite
US20080072407A1 (en) * 2006-09-26 2008-03-27 James Wong Methods for fabrication of improved electrolytic capacitor anode
CN102393128A (zh) * 2011-08-12 2012-03-28 贵州钢绳股份有限公司 磷化钢线表面脱水处理剂及其使用方法
US20140272445A1 (en) * 2013-03-14 2014-09-18 Philip O. Funk Dual-phase hot extrusion of metals
US9486848B2 (en) 2013-03-14 2016-11-08 The Electric Materials Company Dual-phase hot extrusion of metals
US9633796B2 (en) 2013-09-06 2017-04-25 Greatbatch Ltd. High voltage tantalum anode and method of manufacture
US9844806B2 (en) 2013-03-14 2017-12-19 The Electric Materials Company Dual-phase hot extrusion of metals
US10192688B2 (en) 2016-08-12 2019-01-29 Composite Material Technology, Inc. Electrolytic capacitor and method for improved electrolytic capacitor anodes
US10230110B2 (en) 2016-09-01 2019-03-12 Composite Materials Technology, Inc. Nano-scale/nanostructured Si coating on valve metal substrate for LIB anodes
USRE47560E1 (en) 2013-09-06 2019-08-06 Greatbatch Ltd. Method for manufacturing a high voltage tantalum anode
CN111451312A (zh) * 2020-04-07 2020-07-28 江阴六环合金线有限公司 一种超细铝丝的加工方法
USRE48439E1 (en) 2013-09-06 2021-02-16 Greatbatch Ltd. High voltage tantalum anode and method of manufacture
US20230121858A1 (en) * 2016-03-03 2023-04-20 Michael T. Stawovy Fabrication of metallic parts by additive manufacturing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050298A (en) * 1934-04-25 1936-08-11 Thos Firth & John Brown Ltd Metal reducing method
US2077682A (en) * 1935-05-17 1937-04-20 Thos Firth & John Brown Ltd Drawing process
US3083817A (en) * 1953-11-18 1963-04-02 British Ropes Ltd Wire ropes
US3223878A (en) * 1962-09-17 1965-12-14 Electro Optical Systems Inc Method of fabricating fine grids
US3277564A (en) * 1965-06-14 1966-10-11 Roehr Prod Co Inc Method of simultaneously forming a plurality of filaments
US3378999A (en) * 1965-06-17 1968-04-23 Brunswick Corp Metallic yarn structure
US3394213A (en) * 1964-03-02 1968-07-23 Roehr Prod Co Inc Method of forming filaments

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050298A (en) * 1934-04-25 1936-08-11 Thos Firth & John Brown Ltd Metal reducing method
US2077682A (en) * 1935-05-17 1937-04-20 Thos Firth & John Brown Ltd Drawing process
US3083817A (en) * 1953-11-18 1963-04-02 British Ropes Ltd Wire ropes
US3223878A (en) * 1962-09-17 1965-12-14 Electro Optical Systems Inc Method of fabricating fine grids
US3394213A (en) * 1964-03-02 1968-07-23 Roehr Prod Co Inc Method of forming filaments
US3277564A (en) * 1965-06-14 1966-10-11 Roehr Prod Co Inc Method of simultaneously forming a plurality of filaments
US3378999A (en) * 1965-06-17 1968-04-23 Brunswick Corp Metallic yarn structure

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742578A (en) * 1968-08-15 1973-07-03 Philips Corp Method of manufacturing a regenerator
US4118845A (en) * 1969-04-01 1978-10-10 Brunswick Corporation Apparatus for producing fine metal filaments
US4044447A (en) * 1971-03-02 1977-08-30 Nippon Seisen, Co., Ltd. Method of simultaneously drawing a number of wire members
US3946348A (en) * 1971-03-22 1976-03-23 Bbc Aktiengesellschaft Brown, Boveri & Cie. Radiation resistant ducted superconductive coil
US3882587A (en) * 1972-12-06 1975-05-13 Rau Fa G Method of producing a fibre-reinforced material
US3943619A (en) * 1974-10-02 1976-03-16 Raymond Boyd Associates Procedure for forming small wires
US3964283A (en) * 1974-11-13 1976-06-22 Western Electric Company, Inc. Production of multiple elongated products such as wire
US4027511A (en) * 1974-11-13 1977-06-07 Western Electric Company, Inc. Apparatus for producing multiple elongated products such as wires
USRE29593E (en) * 1974-11-13 1978-03-28 Western Electric Co., Inc. Production of multiple elongated products such as wire
US4044457A (en) * 1976-04-01 1977-08-30 The United States Of America As Represented By The United States Energy Research And Development Administration Method of fabricating composite superconducting wire
US4205119A (en) * 1978-06-29 1980-05-27 Airco, Inc. Wrapped tantalum diffusion barrier
US4261099A (en) * 1979-07-27 1981-04-14 Westinghouse Electric Corp. Method for making multi-element brushes
US4323186A (en) * 1980-08-18 1982-04-06 Polymet Corporation Manufacture of high performance alloy in elongated form
US5686394A (en) * 1987-05-18 1997-11-11 Sumitomo Electric Industries, Ltd. Process for manufacturing a superconducting composite
US5034857A (en) * 1989-10-06 1991-07-23 Composite Materials Technology, Inc. Porous electrolytic anode
US5179778A (en) * 1992-02-25 1993-01-19 Dickson Lawrence J Method and means for producing disks of tightly packed on-end aligned fibers
US5245514A (en) * 1992-05-27 1993-09-14 Cabot Corporation Extruded capacitor electrode and method of making the same
US5282310A (en) * 1992-12-28 1994-02-01 Xerox Corporation Method for manufacturing a fibrillated pultruded electronic component
US5495668A (en) * 1994-01-13 1996-03-05 The Furukawa Electric Co., Ltd. Manufacturing method for a supermicro-connector
US5525423A (en) * 1994-06-06 1996-06-11 Memtec America Corporation Method of making multiple diameter metallic tow material
US5584109A (en) * 1994-06-22 1996-12-17 Memtec America Corp. Method of making a battery plate
US5890272A (en) * 1996-11-12 1999-04-06 Usf Filtration And Separations Group, Inc Process of making fine metallic fibers
WO1998021004A1 (fr) * 1996-11-12 1998-05-22 Memtec America Corporation Processus de fabrication de fibres metalliques fines
WO1999024216A1 (fr) * 1997-11-12 1999-05-20 Usf Filtration And Separations Group, Inc. Procede de fabrication de fibres metalliques fines et ultrafines
US6112395A (en) * 1997-11-12 2000-09-05 Usf Filtration And Separations Group, Inc. Process of making fine and ultra fine metallic fibers
US6497029B1 (en) 1997-11-12 2002-12-24 Pall Filtration And Separations Group Inc. Process for making fine and ultra fine metallic fibers
EP1127629A1 (fr) * 2000-02-25 2001-08-29 Bridgestone Corporation Procédé d'étirage en paquet et procédé pour la fabrication de filaments métalliques
WO2002022922A3 (fr) * 2000-09-11 2002-06-13 Usf Filtration & Separations Installation et procede de fabrication pour cable de fibres metalliques de haute qualite
US6381826B1 (en) * 2001-02-21 2002-05-07 Usf Filtration & Separations Group, Inc. Process for producing high quality metallic fiber mesh
WO2002068148A1 (fr) * 2001-02-21 2002-09-06 Pall Corporation Procede de fabrication de maillage metallique fin
US8858738B2 (en) 2006-09-26 2014-10-14 Composite Materials Technology, Inc. Methods for fabrication of improved electrolytic capacitor anode
US20080072407A1 (en) * 2006-09-26 2008-03-27 James Wong Methods for fabrication of improved electrolytic capacitor anode
EP2076911A4 (fr) * 2006-09-26 2012-06-20 Composite Materials Tech Procédé de fabrication d'anode de condensateur électrolytique amélioré
CN102393128A (zh) * 2011-08-12 2012-03-28 贵州钢绳股份有限公司 磷化钢线表面脱水处理剂及其使用方法
US9844806B2 (en) 2013-03-14 2017-12-19 The Electric Materials Company Dual-phase hot extrusion of metals
US9486848B2 (en) 2013-03-14 2016-11-08 The Electric Materials Company Dual-phase hot extrusion of metals
US20140272445A1 (en) * 2013-03-14 2014-09-18 Philip O. Funk Dual-phase hot extrusion of metals
US9633796B2 (en) 2013-09-06 2017-04-25 Greatbatch Ltd. High voltage tantalum anode and method of manufacture
USRE47560E1 (en) 2013-09-06 2019-08-06 Greatbatch Ltd. Method for manufacturing a high voltage tantalum anode
USRE48439E1 (en) 2013-09-06 2021-02-16 Greatbatch Ltd. High voltage tantalum anode and method of manufacture
US20230121858A1 (en) * 2016-03-03 2023-04-20 Michael T. Stawovy Fabrication of metallic parts by additive manufacturing
US20240278314A1 (en) * 2016-03-03 2024-08-22 Michael T. Stawovy Fabrication of metallic parts by additive manufacturing
US11919070B2 (en) * 2016-03-03 2024-03-05 H.C. Starck Solutions Coldwater, LLC Fabrication of metallic parts by additive manufacturing
US10192688B2 (en) 2016-08-12 2019-01-29 Composite Material Technology, Inc. Electrolytic capacitor and method for improved electrolytic capacitor anodes
US10230110B2 (en) 2016-09-01 2019-03-12 Composite Materials Technology, Inc. Nano-scale/nanostructured Si coating on valve metal substrate for LIB anodes
USRE49419E1 (en) 2016-09-01 2023-02-14 Composite Materials Technology, Inc. Nano-scale/nanostructured Si coating on valve metal substrate for lib anodes
CN111451312A (zh) * 2020-04-07 2020-07-28 江阴六环合金线有限公司 一种超细铝丝的加工方法

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