GB687725A - Improvements in and relating to the surface treatment of steels - Google Patents
Improvements in and relating to the surface treatment of steelsInfo
- Publication number
- GB687725A GB687725A GB960450A GB960450A GB687725A GB 687725 A GB687725 A GB 687725A GB 960450 A GB960450 A GB 960450A GB 960450 A GB960450 A GB 960450A GB 687725 A GB687725 A GB 687725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steels
- relating
- steel
- surface treatment
- per cent
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
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)
- Processing Of Solid Wastes (AREA)
Abstract
In a method of removing the surface of steel by scaling during heating, the heated steel is subjected to an atmosphere including air, and containing between 4 and 50 per cent of water vapour by volume. Preferred temperatures are in the range 600-1100 DEG C. The percentage of water-vapour used is determined by the amount of scaling required, and especially for the treatment of high carbon chromium steel should be at least 15 per cent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB960450A GB687725A (en) | 1950-04-19 | 1950-04-19 | Improvements in and relating to the surface treatment of steels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB960450A GB687725A (en) | 1950-04-19 | 1950-04-19 | Improvements in and relating to the surface treatment of steels |
Publications (1)
Publication Number | Publication Date |
---|---|
GB687725A true GB687725A (en) | 1953-02-18 |
Family
ID=9875186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB960450A Expired GB687725A (en) | 1950-04-19 | 1950-04-19 | Improvements in and relating to the surface treatment of steels |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB687725A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684411A (en) * | 1984-11-21 | 1987-08-04 | Hawk Johnsen | Method for finishing steel shapes with magnetite and product obtained therefrom |
-
1950
- 1950-04-19 GB GB960450A patent/GB687725A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684411A (en) * | 1984-11-21 | 1987-08-04 | Hawk Johnsen | Method for finishing steel shapes with magnetite and product obtained therefrom |
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