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GB928626A - Improvements in and relating to powder metallurgy - Google Patents

Improvements in and relating to powder metallurgy

Info

Publication number
GB928626A
GB928626A GB27347/61A GB2734761A GB928626A GB 928626 A GB928626 A GB 928626A GB 27347/61 A GB27347/61 A GB 27347/61A GB 2734761 A GB2734761 A GB 2734761A GB 928626 A GB928626 A GB 928626A
Authority
GB
United Kingdom
Prior art keywords
chromium
stearate
tungsten
carbide
water
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
Application number
GB27347/61A
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB928626A publication Critical patent/GB928626A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • 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
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

A free flowing powder mixture comprising by weight 83%-95.4% of tungsten, chromium, chromium carbide or molybdenum disilicide, 2%-8% of a water soluble polymerized synthetic gum, 2%-5% water and 0.1%-2% of a water insoluble stearate is compacted to a green density of 30%-65% theoretical and a green strength of 5-500 p.s.i. then cold rolled to at least 80% reduction in thickness and finally sintered in an inert atmosphere such as hydrogen. The gum specified is polyacrylamide, the stearate is diglycol stearate and 0.1% to 0.2% of a dispensing agent such as lignin sulphonate may also be present. The metal, carbide or disilicide powder should have a particle size of 1.5 to 10 micron and the compaction is effected by extrusion at 50 DEG C.-60 DEG C. After cold rolling the compact may be shaped as desired, the tungsten being sintered at 1700 DEG C., the chromium at 1500 DEG C. and the molybdenum disilicide at 1650 DEG C.
GB27347/61A 1960-08-12 1961-07-28 Improvements in and relating to powder metallurgy Expired GB928626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49255A US3155502A (en) 1960-08-12 1960-08-12 Powder metallurgy

Publications (1)

Publication Number Publication Date
GB928626A true GB928626A (en) 1963-06-12

Family

ID=21958857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27347/61A Expired GB928626A (en) 1960-08-12 1961-07-28 Improvements in and relating to powder metallurgy

Country Status (2)

Country Link
US (1) US3155502A (en)
GB (1) GB928626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217182A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Producing a refractory metal component
DE102012217188A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Producing a refractory metal component

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377164A (en) * 1965-01-25 1968-04-09 Gen Dynamics Corp Method for powdered metal forming
US3929476A (en) * 1972-05-05 1975-12-30 Minnesota Mining & Mfg Precision molded refractory articles and method of making
US3917149A (en) * 1972-09-15 1975-11-04 Mallory Composites Process of preparing embossed sintered articles of manufacture
JPS4991910A (en) * 1973-01-09 1974-09-03
JPS51126307A (en) * 1975-04-28 1976-11-04 Shinroku Saito Process for producing a super alloy plate
JPS51126308A (en) * 1975-04-28 1976-11-04 Shinroku Saito Process for producing a super alloy plate
JPS5262107A (en) * 1975-11-18 1977-05-23 Inoue Japax Res Inc Production process of wear-resisting material
JPS5263103A (en) * 1975-11-20 1977-05-25 Inoue Japax Res Inc Sintering process of wear-resisting material
US4977123A (en) * 1988-06-17 1990-12-11 Massachusetts Institute Of Technology Preparation of extrusions of bulk mixed oxide compounds with high macroporosity and mechanical strength
DE3822686A1 (en) * 1988-07-05 1990-01-11 Geesthacht Gkss Forschung METHOD FOR PRODUCING INTERMETALLIC PHASES FROM POWDER-SHAPED DUCTILE COMPONENTS
IT1260928B (en) * 1993-07-16 1996-04-29 Fiat Auto Spa PROCEDURE FOR THE REALIZATION OF METAL AND / OR CERAMIC SHEETS THROUGH SINTERING OF DUST AND RELATED PRODUCT.
JP4019522B2 (en) * 1998-10-13 2007-12-12 セイコーエプソン株式会社 Method for manufacturing sintered body
ES2558877T3 (en) * 2006-06-22 2016-02-09 H.C. Starck Hermsdorf Gmbh Procedure for the manufacture of molded bodies of refractory metal
US7883662B2 (en) * 2007-11-15 2011-02-08 Viper Technologies Metal injection molding methods and feedstocks
US8124187B2 (en) 2009-09-08 2012-02-28 Viper Technologies Methods of forming porous coatings on substrates

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1757846A (en) * 1928-06-15 1930-05-06 Krupp Ag Manufacture of bodies for tools and the like from materials such as carbides, the alloys thereof, and the like
US2659136A (en) * 1950-08-16 1953-11-17 Dow Chemical Co Composite alloy
US2659132A (en) * 1950-08-16 1953-11-17 Dow Chemical Co Composite alloy
US2921861A (en) * 1953-08-19 1960-01-19 Fansteel Metallurgical Corp Method of forming titanium silicide refractory articles
US2792302A (en) * 1955-08-29 1957-05-14 Connecticut Metals Inc Process for making porous metallic bodies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217182A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Producing a refractory metal component
WO2014044433A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Production of a refractory metal component
DE102012217188A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Producing a refractory metal component
WO2014044432A1 (en) 2012-09-24 2014-03-27 Siemens Aktiengesellschaft Production of a refractory metal component

Also Published As

Publication number Publication date
US3155502A (en) 1964-11-03

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