GB420544A - An improved method of producing hard metal alloys - Google Patents
An improved method of producing hard metal alloysInfo
- Publication number
- GB420544A GB420544A GB2158833A GB2158833A GB420544A GB 420544 A GB420544 A GB 420544A GB 2158833 A GB2158833 A GB 2158833A GB 2158833 A GB2158833 A GB 2158833A GB 420544 A GB420544 A GB 420544A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- carbide
- alloy
- mixture
- pressed
- 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
Abstract
In a method of producing hard alloys containing a carbide of a refractory metal such as tungsten, and a more fusible metal or alloy such as cobalt, the metal or alloy is added wholly, or at least to the extent of 35 per cent, in colloidal form to the carbide, and the mixture is pressed and sintered in known manner. The metal or alloy may be added in the form of a colloidal solution, for example, the hydro- or organo-sol, the solvent being evaporated after mixing with the carbide. The mixture after further mixing is pressed, and sintered in vacuo once or twice. Alternatively, the metal may be separated from the colloidal solution and introduced as a dry powder to the carbide. In the case of articles of a complicated shape the mixture is dried only to the consistency of dough and then pressed, rolled, or cast. The metal or alloy may also be introduced as a colloidal solution of its oxide or hydroxide, or a freshly precipitated, highly dispersed, semi-colloidal hydroxide or hydrated oxide, the mixture being subsequently reduced by hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2158833A GB420544A (en) | 1933-08-01 | 1933-08-01 | An improved method of producing hard metal alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2158833A GB420544A (en) | 1933-08-01 | 1933-08-01 | An improved method of producing hard metal alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB420544A true GB420544A (en) | 1934-12-04 |
Family
ID=10165425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2158833A Expired GB420544A (en) | 1933-08-01 | 1933-08-01 | An improved method of producing hard metal alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB420544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2826499A (en) * | 1949-02-22 | 1958-03-11 | Basf Ag | Process for producing sintered metal articles |
-
1933
- 1933-08-01 GB GB2158833A patent/GB420544A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2826499A (en) * | 1949-02-22 | 1958-03-11 | Basf Ag | Process for producing sintered metal articles |
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