ES380992A1 - Dense bodies of tungsten carbide - Google Patents
Dense bodies of tungsten carbideInfo
- Publication number
- ES380992A1 ES380992A1 ES380992A ES380992A ES380992A1 ES 380992 A1 ES380992 A1 ES 380992A1 ES 380992 A ES380992 A ES 380992A ES 380992 A ES380992 A ES 380992A ES 380992 A1 ES380992 A1 ES 380992A1
- Authority
- ES
- Spain
- Prior art keywords
- tungsten
- cobalt
- weight
- carbon
- tungsten carbide
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
A process for the preparation of a tungsten carbide body bonded with 3 to 25% by weight of a heterogeneous cobalt-tungsten alloy, said alloy consisting essentially of cobalt and an average of 5 to 25% by weight of tungsten and comprising said Alloy regions containing less than 8% by weight of tungsten interdispersed with regions containing more than 8% by weight of tungsten, the process comprising the steps of: (a) Grinding finely divided carbon with cobalt and tungsten carbide in sufficient quantities to produce a mixture containing 0.01 to 0.5% free carbon and with a carbon: tungsten ratio of [1.0-0, 0062 (Pl)] and 1.02, where P is the weight percentage of cobalt in the mixture, said tungsten carbide having a carbon: tungsten ratio of at least 0.80; (b) heating the ground mixture in an inert atmosphere to a temperature Ts between 1OOOºC and TnºC for a period of time between ts and 20 ts minutes, where ** (See formula) ** where P = weight percentage of cobalt; (c) pressing the hot composition to a density greater than 99% of the theoretical one in a zone heated to a temperature of Tm, for a time between tm and 20 tm minutes, where: ** (See formula) ** (d) cooling the pressed composition at high speed. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83581769A | 1969-06-23 | 1969-06-23 | |
US83581569A | 1969-06-23 | 1969-06-23 | |
US83581469A | 1969-06-23 | 1969-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES380992A1 true ES380992A1 (en) | 1973-04-01 |
Family
ID=27420254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES380992A Expired ES380992A1 (en) | 1969-06-23 | 1970-06-20 | Dense bodies of tungsten carbide |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS4931403B1 (en) |
AT (1) | AT299562B (en) |
BE (1) | BE751884A (en) |
CH (1) | CH545347A (en) |
DE (1) | DE2030666A1 (en) |
ES (1) | ES380992A1 (en) |
FR (1) | FR2047071B1 (en) |
GB (1) | GB1315368A (en) |
LU (1) | LU61174A1 (en) |
NL (1) | NL7009125A (en) |
SE (2) | SE7411631L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112496319A (en) * | 2019-09-16 | 2021-03-16 | 宿迁启祥电子科技有限公司 | Sintering device and preparation method of tungsten alloy material |
CN114315358B (en) * | 2021-12-27 | 2023-01-24 | 海南大学 | Fully-compact binderless tungsten carbide ceramic and preparation method thereof |
CN116790953B (en) * | 2023-07-05 | 2024-01-05 | 中国机械总院集团北京机电研究所有限公司 | High-performance nano hard alloy product and preparation method thereof |
-
1970
- 1970-06-09 GB GB2798170A patent/GB1315368A/en not_active Expired
- 1970-06-11 JP JP45049965A patent/JPS4931403B1/ja active Pending
- 1970-06-12 BE BE751884D patent/BE751884A/en unknown
- 1970-06-18 AT AT548470A patent/AT299562B/en not_active IP Right Cessation
- 1970-06-19 CH CH936370A patent/CH545347A/en not_active IP Right Cessation
- 1970-06-20 ES ES380992A patent/ES380992A1/en not_active Expired
- 1970-06-22 DE DE19702030666 patent/DE2030666A1/en active Pending
- 1970-06-22 LU LU61174D patent/LU61174A1/xx unknown
- 1970-06-22 NL NL7009125A patent/NL7009125A/xx unknown
- 1970-06-23 FR FR7023129A patent/FR2047071B1/fr not_active Expired
-
1974
- 1974-09-16 SE SE7411631A patent/SE7411631L/ not_active Application Discontinuation
- 1974-09-16 SE SE7411630A patent/SE7411630L/ not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
LU61174A1 (en) | 1970-08-24 |
SE7411631L (en) | 1974-09-16 |
AT299562B (en) | 1972-06-26 |
SE7411630L (en) | 1974-09-16 |
BE751884A (en) | 1970-12-14 |
FR2047071A1 (en) | 1971-03-12 |
CH545347A (en) | 1973-12-15 |
DE2030666A1 (en) | 1971-01-07 |
NL7009125A (en) | 1970-12-28 |
JPS4931403B1 (en) | 1974-08-21 |
FR2047071B1 (en) | 1973-01-12 |
GB1315368A (en) | 1973-05-02 |
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