GB516867A - Heat resistant chromium-containing alloy steels and process for the production thereof - Google Patents
Heat resistant chromium-containing alloy steels and process for the production thereofInfo
- Publication number
- GB516867A GB516867A GB14175/38A GB1417538A GB516867A GB 516867 A GB516867 A GB 516867A GB 14175/38 A GB14175/38 A GB 14175/38A GB 1417538 A GB1417538 A GB 1417538A GB 516867 A GB516867 A GB 516867A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- per cent
- chromium
- alloy steels
- containing alloy
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
516,867. Decarburizing alloy steels. WESTBERG, S. May 12, 1938, No. 14175. [Classes 72 and 82 (i)] Low-carbon chromium-containing alloy steels are produced by subjecting high-carbon chromium-containing alloy steel in a form having a large surface area, for example granulated, to a decarburizing heat-treatment in the solid state, at a temperature of 1,000C. or higher, in an oxygen-containing atmosphere until substantially the whole of the carbon present in the material has been removed. Before decarburization the material may be coated with an oxide such as lime or magnesia, and the operations of granulating and coating may be combined. In an example, a material containing about 80 per cent. of iron, 19 per cent. of chromium and 0.6 per cent. of carbon, produced as by melting together iron and ferro-chrome, is granulated, and if desired coated with lime or magnesia, and is heated in a current of oxygen and inert gas passing at such a rate that carbon monoxide is swept away as soon as it is formed. The product, which may contain 0.03 per cent. or less of carbon, is melted and heated with a deoxidizing agent such as silicon. Specifications 504,122 and 514,491 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO516867X | 1937-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516867A true GB516867A (en) | 1940-01-15 |
Family
ID=19905898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14175/38A Expired GB516867A (en) | 1937-05-13 | 1938-05-12 | Heat resistant chromium-containing alloy steels and process for the production thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB516867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541153A (en) * | 1949-04-12 | 1951-02-13 | Union Carbide & Carbon Corp | Method of decarburizing highcarbon ferrochromium |
-
1938
- 1938-05-12 GB GB14175/38A patent/GB516867A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541153A (en) * | 1949-04-12 | 1951-02-13 | Union Carbide & Carbon Corp | Method of decarburizing highcarbon ferrochromium |
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