GB312349A - Improvements in the manufacture of articles hardened by nitrogenisation - Google Patents
Improvements in the manufacture of articles hardened by nitrogenisationInfo
- Publication number
- GB312349A GB312349A GB13230/29A GB1323029A GB312349A GB 312349 A GB312349 A GB 312349A GB 13230/29 A GB13230/29 A GB 13230/29A GB 1323029 A GB1323029 A GB 1323029A GB 312349 A GB312349 A GB 312349A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- steel
- chromium
- metals
- extracting
- 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
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
312,349. Krupp Akt.-Ges., F. May 25, 1928, [Convention date]. Cementation. - Nitrogenized steel articles requiring high resistance to stresses produced by high pressure or impact are made from steel free from aluminium and containing 0.25-1 per cent of carbon, 0.2-1 per cent of vanadium or molybdenum or both, and 1.5-5 per cent of one or more of up to 1 per cent of silicon, up to 1 per cent of manganese, and up to 4 per cent of chromium. The steels are nitrogenized at 450-620‹ C., preferably about 500‹ C., for about 70 hours.. Specifications 126,289, [Class 82 (i), Metals, Extracting &c.]; 174,580, 243,613; 254,762 and 272,182, [both in Class 82 (i), Metals, Extracting &c.], are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to a steel containing 2 per cent of carbon, 12 per cent of chromium and 0.8 per cent of tungsten. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE312349X | 1928-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB312349A true GB312349A (en) | 1930-10-29 |
Family
ID=6134633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13230/29A Expired GB312349A (en) | 1928-05-25 | 1929-04-29 | Improvements in the manufacture of articles hardened by nitrogenisation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB312349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235698A (en) * | 1989-08-24 | 1991-03-13 | Nippon Seiko Kk | Bearing steel |
-
1929
- 1929-04-29 GB GB13230/29A patent/GB312349A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235698A (en) * | 1989-08-24 | 1991-03-13 | Nippon Seiko Kk | Bearing steel |
| US5085733A (en) * | 1989-08-24 | 1992-02-04 | Nippon Seiko Kabushiki Kaisha | Rolling steel bearing |
| GB2235698B (en) * | 1989-08-24 | 1994-04-06 | Nippon Seiko Kk | Rolling contact parts steel and rolling bearing made thereof |
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