EP0839920A3 - Process for preparing a starting powder material for fine grained hard metal - Google Patents
Process for preparing a starting powder material for fine grained hard metal Download PDFInfo
- Publication number
- EP0839920A3 EP0839920A3 EP97203354A EP97203354A EP0839920A3 EP 0839920 A3 EP0839920 A3 EP 0839920A3 EP 97203354 A EP97203354 A EP 97203354A EP 97203354 A EP97203354 A EP 97203354A EP 0839920 A3 EP0839920 A3 EP 0839920A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- fine grained
- reaction
- inlet
- preparing
- 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
Links
Classifications
-
- 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
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
- C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
- C22C1/056—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds using gas
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0191296A AT404912B (en) | 1996-11-04 | 1996-11-04 | METHOD FOR PRODUCING POWDER PRESSING APPARATUS FOR FINE-GRAINED HARD METAL |
AT1912/96 | 1996-11-04 | ||
AT191296 | 1996-11-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0839920A2 EP0839920A2 (en) | 1998-05-06 |
EP0839920A3 true EP0839920A3 (en) | 2000-03-29 |
EP0839920B1 EP0839920B1 (en) | 2002-12-18 |
Family
ID=3523714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97203354A Expired - Lifetime EP0839920B1 (en) | 1996-11-04 | 1997-10-29 | Process for preparing a starting powder material for fine grained hard metal |
Country Status (6)
Country | Link |
---|---|
US (1) | US6113668A (en) |
EP (1) | EP0839920B1 (en) |
JP (1) | JPH10140216A (en) |
AT (2) | AT404912B (en) |
DE (1) | DE59709001D1 (en) |
ES (1) | ES2186840T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6843824B2 (en) * | 2001-11-06 | 2005-01-18 | Cerbide | Method of making a ceramic body of densified tungsten carbide |
JP4619907B2 (en) * | 2005-09-20 | 2011-01-26 | 中外炉工業株式会社 | Powder production equipment |
US20130209308A1 (en) * | 2012-02-15 | 2013-08-15 | Baker Hughes Incorporated | Method of making a metallic powder and powder compact and powder and powder compact made thereby |
JP2013222497A (en) * | 2012-04-12 | 2013-10-28 | Toshiba Corp | Contact material for vacuum valve |
CN112390261A (en) * | 2019-08-13 | 2021-02-23 | 斯特里特技术有限公司 | System and method for separation and dehydrogenation of fumed silica particles |
CN114853021A (en) * | 2022-05-23 | 2022-08-05 | 赣州海盛钨业股份有限公司 | Nano tungsten carbide powder and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR844368A (en) * | 1937-10-06 | 1939-07-24 | Methods and apparatus for improving or transforming ores into metal | |
FR941412A (en) * | 1945-06-27 | 1949-01-11 | Pluro Inc | Reduction of metal oxides |
US5125964A (en) * | 1990-09-10 | 1992-06-30 | General Electric Company | Fluidized bed process for preparing tungsten powder |
WO1997016275A1 (en) * | 1995-10-31 | 1997-05-09 | Plansee Aktiengesellschaft | Method for the reduction of metallic compounds |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD48191A (en) * | ||||
US2987392A (en) * | 1960-02-02 | 1961-06-06 | Lester D Supiro | Method of rapidly producing metallic powders of high purity |
BE644277A (en) * | 1963-02-27 | |||
GB1306617A (en) * | 1970-05-08 | 1973-02-14 | Carmet Co | Production of tungsten and tungsten carbide powder |
DE2716082C2 (en) * | 1977-04-12 | 1985-09-05 | Deutsche Babcock Ag, 4200 Oberhausen | Process for the thermal treatment of solids |
US4402737A (en) * | 1982-09-01 | 1983-09-06 | Gte Products Corporation | Method of producing tungsten and tungsten carbide powder |
JPS59113104A (en) * | 1982-12-20 | 1984-06-29 | Toshiba Corp | Manufacture of molybdenum powder |
FI78125C (en) * | 1983-11-14 | 1989-06-12 | Vni Gorno Metall I Tsvet Met | FOERFARANDE FOER BEHANDLING AV JAERNHALTIGA KOPPAR- ELLER KOPPAR / ZINKSULFIDKONCENTRAT. |
EP0197271B1 (en) * | 1985-03-04 | 1989-04-19 | Kabushiki Kaisha Toshiba | Methods for preparing high-purity molybdenum or tungsten powder and high-purity oxides powder of the same |
JPS6345310A (en) * | 1986-08-12 | 1988-02-26 | Tokyo Tungsten Co Ltd | Molybdenum powder and its production |
DD286312A5 (en) * | 1987-07-16 | 1991-01-24 | Kombinat Veb Narva "Rosa Luxemburg",De | PROCESS FOR PREPARING TUNGSTEN FIRM POWDER |
US5110565A (en) * | 1988-02-05 | 1992-05-05 | The Dow Chemical Company | Apparatus for producing uniform, fine ceramic powder |
US4859236A (en) * | 1988-04-25 | 1989-08-22 | Gte Products Corporation | Process for producing molybdenum-ruthenium metal powder |
KR0169483B1 (en) * | 1989-06-02 | 1999-01-15 | 얀 로버트 난키벨 | Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
KR960002416B1 (en) * | 1989-11-09 | 1996-02-17 | 프로시다 인코포레이션 | Spray conversion process for the production of nanophase composite powders |
US5073193A (en) * | 1990-06-26 | 1991-12-17 | The University Of British Columbia | Method of collecting plasma synthesize ceramic powders |
US5125965A (en) * | 1990-08-22 | 1992-06-30 | Cyprus Minerals Company | Method for maintaining fluidization in a fluidized bed reactor |
US5482532A (en) * | 1991-06-05 | 1996-01-09 | Kubota Corporation | Method of and apparatus for producing metal powder |
ATE123478T1 (en) * | 1991-08-07 | 1995-06-15 | Univ Rutgers | CARBURIZATION PROCESS FOR PRODUCING TUNGSTEN CARBIDE-COBALT POWDER WITH Grain Sizes in the Nanometer Range. |
DE4214723C2 (en) * | 1992-05-04 | 1994-08-25 | Starck H C Gmbh Co Kg | Finely divided metal powder |
US5380688A (en) * | 1993-08-09 | 1995-01-10 | The Dow Chemical Company | Method for making submicrometer carbides, submicrometer solid solution carbides, and the material resulting therefrom |
SE502930C2 (en) * | 1994-07-21 | 1996-02-26 | Sandvik Ab | Method for the production of powder from hard materials of WC and Co and / or Ni |
US5746803A (en) * | 1996-06-04 | 1998-05-05 | The Dow Chemical Company | Metallic-carbide group VIII metal powder and preparation methods thereof |
-
1996
- 1996-11-04 AT AT0191296A patent/AT404912B/en not_active IP Right Cessation
-
1997
- 1997-10-29 EP EP97203354A patent/EP0839920B1/en not_active Expired - Lifetime
- 1997-10-29 AT AT97203354T patent/ATE230038T1/en not_active IP Right Cessation
- 1997-10-29 DE DE59709001T patent/DE59709001D1/en not_active Expired - Fee Related
- 1997-10-29 ES ES97203354T patent/ES2186840T3/en not_active Expired - Lifetime
- 1997-10-29 JP JP9312835A patent/JPH10140216A/en active Pending
- 1997-10-31 US US08/962,102 patent/US6113668A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR844368A (en) * | 1937-10-06 | 1939-07-24 | Methods and apparatus for improving or transforming ores into metal | |
FR941412A (en) * | 1945-06-27 | 1949-01-11 | Pluro Inc | Reduction of metal oxides |
US5125964A (en) * | 1990-09-10 | 1992-06-30 | General Electric Company | Fluidized bed process for preparing tungsten powder |
WO1997016275A1 (en) * | 1995-10-31 | 1997-05-09 | Plansee Aktiengesellschaft | Method for the reduction of metallic compounds |
Also Published As
Publication number | Publication date |
---|---|
DE59709001D1 (en) | 2003-01-30 |
EP0839920B1 (en) | 2002-12-18 |
EP0839920A2 (en) | 1998-05-06 |
US6113668A (en) | 2000-09-05 |
AT404912B (en) | 1999-03-25 |
ATA191296A (en) | 1998-08-15 |
ES2186840T3 (en) | 2003-05-16 |
ATE230038T1 (en) | 2003-01-15 |
JPH10140216A (en) | 1998-05-26 |
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