GB341912A - Improvements in the processes for nitrogenising alloy steel articles - Google Patents
Improvements in the processes for nitrogenising alloy steel articlesInfo
- Publication number
- GB341912A GB341912A GB3175029A GB3175029A GB341912A GB 341912 A GB341912 A GB 341912A GB 3175029 A GB3175029 A GB 3175029A GB 3175029 A GB3175029 A GB 3175029A GB 341912 A GB341912 A GB 341912A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- alloy steel
- nitrogenising
- processes
- steel articles
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Catalysts (AREA)
Abstract
Alloy steel articles are nitrogenized first at about 450-540 DEG C. for 5-40 hours and then at about 590-660 DEG C. for 5-40 hours. The steel alloys treated by the process may contain up to 5 per cent of aluminium and up to 5 per cent of chromium or molybdenum or both. They may also contain up to 5 per cent of nickel, up to 2 per cent of manganese, up to 1 per cent of vanadium, up to 1 per cent of titanium, and up to 1 per cent of zirconium. An example contains 0,7 per cent of aluminium, 1,68 per cent of chromium, 0,19 per cent of molybdenum, 0,63 per cent of manganese, 0,315 per cent of carbon, and 0,15 per cent of silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3175029A GB341912A (en) | 1929-10-18 | 1929-10-18 | Improvements in the processes for nitrogenising alloy steel articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3175029A GB341912A (en) | 1929-10-18 | 1929-10-18 | Improvements in the processes for nitrogenising alloy steel articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB341912A true GB341912A (en) | 1931-01-19 |
Family
ID=10327826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3175029A Expired GB341912A (en) | 1929-10-18 | 1929-10-18 | Improvements in the processes for nitrogenising alloy steel articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB341912A (en) |
-
1929
- 1929-10-18 GB GB3175029A patent/GB341912A/en not_active Expired
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