GB436202A - Improvements in or relating to ferrous alloys and methods of making same - Google Patents
Improvements in or relating to ferrous alloys and methods of making sameInfo
- Publication number
- GB436202A GB436202A GB30353/33A GB3035333A GB436202A GB 436202 A GB436202 A GB 436202A GB 30353/33 A GB30353/33 A GB 30353/33A GB 3035333 A GB3035333 A GB 3035333A GB 436202 A GB436202 A GB 436202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- alloy
- articles
- silicon
- ferrous alloys
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Abstract
In a method of making ferrous alloy articles as described in the parent Specification, the articles after heating to a temperature above the critical point are cooled from that temperature and then subjected to further heat treatment to harden the surface of the articles. The heat treatment involves heating to temperatures from 900-1800 DEG F., and quenching, and may be applied to a selected part or selected parts of the article. The alloy may contain 1,5-2,5 per cent of carbon and 0,6-0,9 of silicon, but if the alloy contains 1,5-2,0 per cent of carbon and up to 1 per cent of manganese the silicon content may be increased to 1,3 per cent. The alloy may also contain 0,75-2,0 per cent of nickel, 0,2-0,5 of molybdenum, 0,5-15,0 of aluminium, 0,5-18,0 of chromium and tungsten and up to 1 of vanadium. The Specification as open to inspection under Sect. 91 states that the process described in the parent Specification may be applied to ferrous alloys containing molybdenum with or without nickel or silicon. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US436202XA | 1933-06-28 | 1933-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436202A true GB436202A (en) | 1935-10-01 |
Family
ID=21928064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30353/33A Expired GB436202A (en) | 1933-06-28 | 1934-01-01 | Improvements in or relating to ferrous alloys and methods of making same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807728A (en) * | 1986-03-20 | 1989-02-28 | Hitachi Metals, Ltd. | Brake member and method of manufacturing same |
-
1934
- 1934-01-01 GB GB30353/33A patent/GB436202A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807728A (en) * | 1986-03-20 | 1989-02-28 | Hitachi Metals, Ltd. | Brake member and method of manufacturing same |
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