EP0209632A3 - Elongated tungsten heavy metal article and method for producing same - Google Patents

Elongated tungsten heavy metal article and method for producing same Download PDF

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Publication number
EP0209632A3
EP0209632A3 EP86103186A EP86103186A EP0209632A3 EP 0209632 A3 EP0209632 A3 EP 0209632A3 EP 86103186 A EP86103186 A EP 86103186A EP 86103186 A EP86103186 A EP 86103186A EP 0209632 A3 EP0209632 A3 EP 0209632A3
Authority
EP
European Patent Office
Prior art keywords
tungsten
elongated
article
alloy material
heavy metal
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.)
Granted
Application number
EP86103186A
Other versions
EP0209632B1 (en
EP0209632A2 (en
Inventor
James A. Mullendore
James R. Spencer
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.)
Osram Sylvania Inc
Original Assignee
GTE Products Corp
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 GTE Products Corp filed Critical GTE Products Corp
Priority to AT86103186T priority Critical patent/ATE54841T1/en
Publication of EP0209632A2 publication Critical patent/EP0209632A2/en
Publication of EP0209632A3 publication Critical patent/EP0209632A3/en
Application granted granted Critical
Publication of EP0209632B1 publication Critical patent/EP0209632B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/20—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/006—Powder metal alloys

Abstract

An article of tungsten heavy alloy material has essentially elongated tungsten grains, the alloy material comprising tungsten, nickel, and iron, the elongated tungsten grains having a length to diameter ratio of at least about 2 to 1. A method for producing the above article involves rolling a pressed and sintered body of tungsten heavy alloy material comprising tungsten, iron, and nickel in a tandem rolling mill having a succession of roll stands. Each stand consisting essentially of three rolls positioned at about 120 DEG to each other so that the gap between the rolls is a triangle, each stand being rotated about 180 DEG with respect to the adjacent roll stands. The rolling is done at a sufficient temperature to produce the article which has essentially elongated tungsten grains.
EP86103186A 1985-07-10 1986-03-10 Method for producing an elongate tungsten article Expired - Lifetime EP0209632B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103186T ATE54841T1 (en) 1985-07-10 1986-03-10 MANUFACTURING PROCESS FOR AN ELONGED PRODUCT MADE OF TUNGSTEN CARBIDE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75384385A 1985-07-10 1985-07-10
US753843 1985-07-10

Publications (3)

Publication Number Publication Date
EP0209632A2 EP0209632A2 (en) 1987-01-28
EP0209632A3 true EP0209632A3 (en) 1987-07-22
EP0209632B1 EP0209632B1 (en) 1990-07-25

Family

ID=25032391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103186A Expired - Lifetime EP0209632B1 (en) 1985-07-10 1986-03-10 Method for producing an elongate tungsten article

Country Status (3)

Country Link
EP (1) EP0209632B1 (en)
AT (1) ATE54841T1 (en)
DE (1) DE3672915D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622209B1 (en) * 1987-10-23 1990-01-26 Cime Bocuze HEAVY DUTIES OF TUNGSTENE-NICKEL-IRON WITH VERY HIGH MECHANICAL CHARACTERISTICS AND METHOD OF MANUFACTURING SAID ALLOYS
US4768365A (en) * 1987-11-23 1988-09-06 Gte Products Corporation Process for producing tungsten heavy alloy sheet
US11043352B1 (en) 2019-12-20 2021-06-22 Varex Imaging Corporation Aligned grain structure targets, systems, and methods of forming
CN113263177A (en) * 2021-04-15 2021-08-17 成都虹波实业股份有限公司 Preparation method for improving large and small heads of tungsten alloy bars

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1330469A (en) * 1962-08-02 1963-06-21 Plansee Metallwerk Contacts for high voltage switches
DE1957073B2 (en) * 1968-12-23 1972-07-20 Metallwerk Plansee AG, Reutte, Tirol (Österreich) Sintered Tungsten Alloy
DE2156444A1 (en) * 1971-02-20 1973-08-16 Ilario Properzi HOT ROLLING PROCESS FOR THE PRODUCTION OF ROLLED WIRE OD. DGL. WITH SMALL CROSS-SECTION AND HIGH QUALITY SURFACE, IN PARTICULAR COPPER ROLLED WIRE
DE2242760B2 (en) * 1970-11-27 1974-07-04 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen Roll stand for hot rolling metal wire
US3859055A (en) * 1966-10-27 1975-01-07 Mallory & Co Inc P R Tungsten-nickel-iron shaping members
DE1558821B2 (en) * 1967-03-25 1975-10-02 Veb Keramische Werke Hermsdorf, X 6530 Hermsdorf Process for increasing the ductility of semi-finished products made of tungsten or tungsten alloys
DE2727892B2 (en) * 1976-06-23 1980-01-10 Eurotungstene S.A., Grenoble (Frankreich) Use of W / Fe alloys for tools for hot forming
EP0073384A1 (en) * 1981-08-27 1983-03-09 GTE Products Corporation Frangible tungsten penetrator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047003B2 (en) * 1980-09-02 1985-10-19 株式会社東芝 Method for rolling high melting point metal bodies

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1330469A (en) * 1962-08-02 1963-06-21 Plansee Metallwerk Contacts for high voltage switches
US3859055A (en) * 1966-10-27 1975-01-07 Mallory & Co Inc P R Tungsten-nickel-iron shaping members
DE1558821B2 (en) * 1967-03-25 1975-10-02 Veb Keramische Werke Hermsdorf, X 6530 Hermsdorf Process for increasing the ductility of semi-finished products made of tungsten or tungsten alloys
DE1957073B2 (en) * 1968-12-23 1972-07-20 Metallwerk Plansee AG, Reutte, Tirol (Österreich) Sintered Tungsten Alloy
DE2242760B2 (en) * 1970-11-27 1974-07-04 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen Roll stand for hot rolling metal wire
DE2156444A1 (en) * 1971-02-20 1973-08-16 Ilario Properzi HOT ROLLING PROCESS FOR THE PRODUCTION OF ROLLED WIRE OD. DGL. WITH SMALL CROSS-SECTION AND HIGH QUALITY SURFACE, IN PARTICULAR COPPER ROLLED WIRE
DE2727892B2 (en) * 1976-06-23 1980-01-10 Eurotungstene S.A., Grenoble (Frankreich) Use of W / Fe alloys for tools for hot forming
EP0073384A1 (en) * 1981-08-27 1983-03-09 GTE Products Corporation Frangible tungsten penetrator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 120 (M-140)[998], 3rd July 1982; & JP-A-57 047 510 (TOKYO SHIBAURA DENKI) 18-03-1982 *

Also Published As

Publication number Publication date
ATE54841T1 (en) 1990-08-15
EP0209632B1 (en) 1990-07-25
EP0209632A2 (en) 1987-01-28
DE3672915D1 (en) 1990-08-30

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