GB408716A - Improvements in methods of making tools and similar objects from sintered hard metalcarbides or like material - Google Patents
Improvements in methods of making tools and similar objects from sintered hard metalcarbides or like materialInfo
- Publication number
- GB408716A GB408716A GB30781/32A GB3078132A GB408716A GB 408716 A GB408716 A GB 408716A GB 30781/32 A GB30781/32 A GB 30781/32A GB 3078132 A GB3078132 A GB 3078132A GB 408716 A GB408716 A GB 408716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressing
- sintering
- metalcarbides
- methods
- hard
- 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
In a process for the production of tools and other objects subjected to abrasion, by pressing and sintering a pulverous mixture consisting of a hard metal carbide, boride, silicide, or nitride and one or more softer metals such as iron, cobalt, &c., with or without the addition of one or more hard metals such as tungsten, molybdenum &c., the mixture is subjected before, during, or after pressing to the influence of chemicals that attack the surfaces of the soft metal powder so that, at a slight sintering, if necessary, a coherent form piece is obtained which is mechanically worked to shape, and then finally sintered. The soft metal may be oxidized, for example by oxygen or chlorine at atmospheric or raised pressures, or chloridized by solid or dissolved ammonium chloride, or treated with other salts or dilute organic or inorganic acids. In certain cases a second pressing under high pressure is applied after the slight sintering.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1996220X | 1931-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB408716A true GB408716A (en) | 1934-04-19 |
Family
ID=20424263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30781/32A Expired GB408716A (en) | 1931-11-04 | 1932-11-01 | Improvements in methods of making tools and similar objects from sintered hard metalcarbides or like material |
Country Status (4)
Country | Link |
---|---|
US (1) | US1996220A (en) |
FR (1) | FR745076A (en) |
GB (1) | GB408716A (en) |
NL (1) | NL34502C (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE976738C (en) * | 1940-11-23 | 1964-04-02 | Degussa | Process for the production of molded bodies from metal powder |
ES203316A1 (en) * | 1951-05-04 | 1952-07-01 | British Aluminium Co Ltd | Current conducting element for aluminum production cells |
US2766141A (en) * | 1951-10-19 | 1956-10-09 | Carborundum Co | Zirconium boride body impregnated with molybdenum silicide and method of making same |
US2921861A (en) * | 1953-08-19 | 1960-01-19 | Fansteel Metallurgical Corp | Method of forming titanium silicide refractory articles |
US2963448A (en) * | 1957-05-06 | 1960-12-06 | Texaco Inc | Tableting process for granular porous solid particles |
US3036910A (en) * | 1958-03-13 | 1962-05-29 | Walter W Eichenberger | Synthetic ferro-titanium briquette |
US3110590A (en) * | 1961-10-06 | 1963-11-12 | Du Pont | Compositions of molybdenum, nitrogen and silicon and shaped objects therefrom |
US3184834A (en) * | 1961-12-19 | 1965-05-25 | Du Pont | Selected mo-nb-si-ti compositions and objects thereof |
US3161948A (en) * | 1963-01-29 | 1964-12-22 | Du Pont | Compositions containing iron, molybdenu, silicon and selected low-melting metals |
US3409418A (en) * | 1966-11-09 | 1968-11-05 | Du Pont | Dense products of vanadium or zirconium nitride with iron, nickel or cobalt |
US3663297A (en) * | 1970-06-24 | 1972-05-16 | Us Navy | Process for the preparation of sintered zinc powder battery electrodes |
GB1425166A (en) * | 1972-05-16 | 1976-02-18 | Lucas Industries Ltd | Method of producing hot pressed components |
-
0
- FR FR745076D patent/FR745076A/fr not_active Expired
- NL NL34502D patent/NL34502C/xx active
-
1932
- 1932-11-01 GB GB30781/32A patent/GB408716A/en not_active Expired
- 1932-11-03 US US641117A patent/US1996220A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL34502C (en) | |
FR745076A (en) | 1933-05-01 |
US1996220A (en) | 1935-04-02 |
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