GB551147A - Improved process of making steel articles from metal powder - Google Patents
Improved process of making steel articles from metal powderInfo
- Publication number
- GB551147A GB551147A GB5801/42A GB580142A GB551147A GB 551147 A GB551147 A GB 551147A GB 5801/42 A GB5801/42 A GB 5801/42A GB 580142 A GB580142 A GB 580142A GB 551147 A GB551147 A GB 551147A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- annealing
- article
- carbon
- steel
- 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
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
Abstract
551,147. Iron alloys; annealing. GENERAL MOTORS CORPORATION. April 30, 1942, No. 5801. Convention date, May 1, 1941. [Classes 72 and 82 (i)] [Also in Group XXII] Steel powder is made by simultaneously breaking up and embrittling molten iron containing 0.8 per cent. or more of carbon, by quenching in water and comminuting and annealing the particles so formed. Iron and steel scrap may be melted, carbon being added to obtain the desired percentage, and atomized in water. The brittle particles so formed are then crushed in a ball mill &c. and then annealed above 1200‹F. This powder may be moulded at 60 to 160 thousand pounds per sq. inch and sintered in a non-oxidizing atmosphere at 1900‹ F. to 2100‹ F. to form porous articles which may be hardened by any known process. If desired graphite may be added before moulding for lubricating purposes and the article may be packed in a material which will prevent decarburizatiion during sintering. Up to 5 per cent. of manganese, nickel, vanadium, chromium, cobalt, or other alloying ingredient may also be added before moulding. Finally the article may be hot pressed to increase its density to 95 per cent. of that of conventional steel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US551147XA | 1941-05-01 | 1941-05-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB551147A true GB551147A (en) | 1943-02-09 |
Family
ID=21995709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5801/42A Expired GB551147A (en) | 1941-05-01 | 1942-04-30 | Improved process of making steel articles from metal powder |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB551147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253874A (en) * | 1976-11-05 | 1981-03-03 | British Steel Corporation | Alloys steel powders |
| FR2524833A1 (en) * | 1982-04-13 | 1983-10-14 | Pont A Mousson | Homogeneous cast iron powder suitable for cold pressing - made by rapid solidification, crushing and heat treating |
-
1942
- 1942-04-30 GB GB5801/42A patent/GB551147A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253874A (en) * | 1976-11-05 | 1981-03-03 | British Steel Corporation | Alloys steel powders |
| FR2524833A1 (en) * | 1982-04-13 | 1983-10-14 | Pont A Mousson | Homogeneous cast iron powder suitable for cold pressing - made by rapid solidification, crushing and heat treating |
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