GB647278A - Improvements in or relating to the production of sintered steel - Google Patents
Improvements in or relating to the production of sintered steelInfo
- Publication number
- GB647278A GB647278A GB34525/47A GB3452547A GB647278A GB 647278 A GB647278 A GB 647278A GB 34525/47 A GB34525/47 A GB 34525/47A GB 3452547 A GB3452547 A GB 3452547A GB 647278 A GB647278 A GB 647278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- sintered
- pressing
- steel
- propane
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
In a method of producing sintered steel by pressing bodies of iron powder, the pressed body is gas carburized at 800 DEG -1000 DEG C., the partial pressure of the carburizing gas being variably controlled to adjust the carbon content of the steel, and then sintered at 1050 DEG -1300 DEG C. Iron powder may be pressed at 3 to 4 tons per sq. in., gas carburized by heating to 800 DEG -1000 DEG C. in an atmosphere obtained by the partial combustion of propane or illuminating gas or producer gas, and finally sintered at a higher temperature. The article may be subjected to a second pressing, which may be a hot pressing, at 6-10 tons per sq. in. after carburizing and before sintering. Alloyed iron powders may also be treated. The Specification as open to inspection under Sect. 91 comprises also the use of hydrogen to which propane or CO has been added. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE647278X | 1946-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB647278A true GB647278A (en) | 1950-12-06 |
Family
ID=20313951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34525/47A Expired GB647278A (en) | 1946-05-10 | 1947-12-29 | Improvements in or relating to the production of sintered steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB647278A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028100A (en) * | 1973-05-17 | 1977-06-07 | Chrysler Corporation | Heat treating atmospheres |
| US4042385A (en) * | 1974-11-09 | 1977-08-16 | Toyo Kogyo Co., Ltd. | Sintering method for making a high carbon ferrous sliding element |
-
1947
- 1947-12-29 GB GB34525/47A patent/GB647278A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028100A (en) * | 1973-05-17 | 1977-06-07 | Chrysler Corporation | Heat treating atmospheres |
| US4042385A (en) * | 1974-11-09 | 1977-08-16 | Toyo Kogyo Co., Ltd. | Sintering method for making a high carbon ferrous sliding element |
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