GB311588A - Improvements in the hardening of molybdenum irons or steels - Google Patents
Improvements in the hardening of molybdenum irons or steelsInfo
- Publication number
- GB311588A GB311588A GB1942028A GB1942028A GB311588A GB 311588 A GB311588 A GB 311588A GB 1942028 A GB1942028 A GB 1942028A GB 1942028 A GB1942028 A GB 1942028A GB 311588 A GB311588 A GB 311588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- irons
- hardening
- iron
- nitrogenization
- 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
- C23C8/60—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 using solids, e.g. powders, pastes
- C23C8/62—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 using solids, e.g. powders, pastes only one element being applied
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
311,588. Vogel, J. L. F. July 4, 1928. Case-hardening. - Irons or steels containing molybdenum as an essential constituent and which may in addition contain other metals such as chromium or tungsten are hardened by a nitrogenization process, effected by heating them with a solid nitrogen compound which, at or below the temperature at which the nitrogenization of iron by nascent nitrogen occurs, decomposes in the presence of the metal, with or without contact with air, water or water vapour, generating the nascent nitrogen required for the process. The nitrogen compound may be any one of the substances urea, cyanides, cyanamides, sodium amide, hexamethlyene tetramine, potassium amide, naphthalene diamine, dicyandiamide, phenyl-hydrazine, acetamide and guanidine, or may be a mixture of such substances. It mav either be introduced into the heating receptacle together with the iron or steel or may be added after the latter has been heated. In order to avoid deformation of the articles treated, heating should not be carried to a temperature above 1100 ‹ C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1942028A GB311588A (en) | 1928-07-04 | 1928-07-04 | Improvements in the hardening of molybdenum irons or steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1942028A GB311588A (en) | 1928-07-04 | 1928-07-04 | Improvements in the hardening of molybdenum irons or steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB311588A true GB311588A (en) | 1929-05-16 |
Family
ID=10129058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1942028A Expired GB311588A (en) | 1928-07-04 | 1928-07-04 | Improvements in the hardening of molybdenum irons or steels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB311588A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1067835B (en) * | 1957-11-28 | 1959-10-29 | Degussa | Process and bath for soft nitriding steel |
| FR2322930A1 (en) * | 1975-09-08 | 1977-04-01 | Allegheny Ludlum Ind Inc | PROCESS FOR TREATMENT OF ORIENTATED SILICON STEEL INHIBITED BY ALUMINUM NITRIDE |
| DE2647668A1 (en) * | 1975-12-15 | 1977-06-16 | Ford Werke Ag | PROCESS FOR NITRIFICATION OF METAL PARTS |
| DE2720208A1 (en) * | 1976-06-07 | 1977-12-15 | Ford Werke Ag | PROCESS FOR NITRIFICATION OF METAL PARTS |
| EP3202945B1 (en) * | 2016-02-04 | 2019-04-24 | IVA Schmetz GmbH | Method for nitrocarburizing of metallic workpieces |
-
1928
- 1928-07-04 GB GB1942028A patent/GB311588A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1067835B (en) * | 1957-11-28 | 1959-10-29 | Degussa | Process and bath for soft nitriding steel |
| FR2322930A1 (en) * | 1975-09-08 | 1977-04-01 | Allegheny Ludlum Ind Inc | PROCESS FOR TREATMENT OF ORIENTATED SILICON STEEL INHIBITED BY ALUMINUM NITRIDE |
| DE2647668A1 (en) * | 1975-12-15 | 1977-06-16 | Ford Werke Ag | PROCESS FOR NITRIFICATION OF METAL PARTS |
| DE2720208A1 (en) * | 1976-06-07 | 1977-12-15 | Ford Werke Ag | PROCESS FOR NITRIFICATION OF METAL PARTS |
| US4119444A (en) * | 1976-06-07 | 1978-10-10 | Ford Motor Company | Pack nitriding process for low alloy steel |
| EP3202945B1 (en) * | 2016-02-04 | 2019-04-24 | IVA Schmetz GmbH | Method for nitrocarburizing of metallic workpieces |
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