GB406822A - Improvements in or relating to hard cemented carbide materials - Google Patents
Improvements in or relating to hard cemented carbide materialsInfo
- Publication number
- GB406822A GB406822A GB3269632A GB3269632A GB406822A GB 406822 A GB406822 A GB 406822A GB 3269632 A GB3269632 A GB 3269632A GB 3269632 A GB3269632 A GB 3269632A GB 406822 A GB406822 A GB 406822A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metals
- hard
- metal
- free carbon
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Hard carbides of metals such as titanium, molybdenum, tungsten, &c. containing free carbon are formed by heating mixtures containing the finely divided oxides of the metals and an excess of carbon in a graphite cylinder, plugged at both ends, in a hydrogen furnace. Mixed carbides containing free carbon may be prepared by reducing, or oxidizing, double salts or mixed salts of the metals to produce alloys or oxides which are subsequently carburized.ALSO:A process for making hard cemented carbide material includes forming a hard carbide containing free carbon, mixing the carbide with a metal or metals of the group iron, cobalt, and nickel, and a metal capable of forming a hard carbide, or an oxide of such a metal, and sintering the mixture to decarbonize it in respect of free carbon. Hard carbides containing free carbon are formed by carburizing metals or their oxides. Mixed carbides may be formed by reducing or oxidizing mixed salt crystals or double salts to form alloys or oxides which are subsequently carburized. The metal added for decarbonizing may be the same as or different from the metal of the carbide to which it is added. The mixture may be hot pressed, or cold pressed and sintered twice at different temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3269632A GB406822A (en) | 1932-11-18 | 1932-11-18 | Improvements in or relating to hard cemented carbide materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3269632A GB406822A (en) | 1932-11-18 | 1932-11-18 | Improvements in or relating to hard cemented carbide materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB406822A true GB406822A (en) | 1934-03-08 |
Family
ID=10342638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3269632A Expired GB406822A (en) | 1932-11-18 | 1932-11-18 | Improvements in or relating to hard cemented carbide materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB406822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE762288C (en) * | 1937-01-17 | 1953-08-24 | Deutsche Edelstahlwerke Ag | Hard metal alloy |
| CN115029659A (en) * | 2022-05-06 | 2022-09-09 | 广东翔鹭钨业股份有限公司 | Method for eliminating hard alloy decarburization defect |
-
1932
- 1932-11-18 GB GB3269632A patent/GB406822A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE762288C (en) * | 1937-01-17 | 1953-08-24 | Deutsche Edelstahlwerke Ag | Hard metal alloy |
| CN115029659A (en) * | 2022-05-06 | 2022-09-09 | 广东翔鹭钨业股份有限公司 | Method for eliminating hard alloy decarburization defect |
| CN115029659B (en) * | 2022-05-06 | 2024-03-01 | 广东翔鹭钨业股份有限公司 | Method for eliminating decarbonization defect of hard alloy |
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