GB300633A - Improvements in hardening iron and steel articles by nitrogenization - Google Patents
Improvements in hardening iron and steel articles by nitrogenizationInfo
- Publication number
- GB300633A GB300633A GB30782/28A GB3078228A GB300633A GB 300633 A GB300633 A GB 300633A GB 30782/28 A GB30782/28 A GB 30782/28A GB 3078228 A GB3078228 A GB 3078228A GB 300633 A GB300633 A GB 300633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- mixture
- duval
- hardening
- chloride
- 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
- C23C8/04—Treatment of selected surface areas, e.g. using masks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
300,633. Aubert, P. F. M., Duval, A. J. P., and Duval, H. A. M., (trading as Aubert et Duval FrÞres). Nov. 17, 1927, [Convention date]. Case-hardening.-The parts of metal articles which are to be protected from the action of nitrogen during the hardening by the nitrogenizahon process described in Specification 174,580, are coated with a salt or mixture of salts of a glazing or enamel-like mass which prevents the entrance of the nitrogen. Potassium chloride or a mixture of 2 parts of barium chloride, 1.5 parts of potassium chloride, 1 part of calcium chloride and 1.25 parts of sodium chloride or a mixture of 7 parts of lead oxide, 2 parts of sand and 1 part of borax may be used. The parts may be coated with water glass before the protective mixture is applied.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE300633X | 1927-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB300633A true GB300633A (en) | 1929-11-28 |
Family
ID=6095085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30782/28A Expired GB300633A (en) | 1927-11-17 | 1928-10-24 | Improvements in hardening iron and steel articles by nitrogenization |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB300633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458715A (en) * | 1944-08-25 | 1949-01-11 | Thompson Prod Inc | Method of preventing scaling |
| US2708379A (en) * | 1950-02-07 | 1955-05-17 | United States Steel Corp | Method of hot rolling stainless steel |
-
1928
- 1928-10-24 GB GB30782/28A patent/GB300633A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458715A (en) * | 1944-08-25 | 1949-01-11 | Thompson Prod Inc | Method of preventing scaling |
| US2708379A (en) * | 1950-02-07 | 1955-05-17 | United States Steel Corp | Method of hot rolling stainless steel |
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