SU109273A1 - The method of nitriding of stainless and heat-resistant steels - Google Patents
The method of nitriding of stainless and heat-resistant steelsInfo
- Publication number
- SU109273A1 SU109273A1 SU455614A SU455614A SU109273A1 SU 109273 A1 SU109273 A1 SU 109273A1 SU 455614 A SU455614 A SU 455614A SU 455614 A SU455614 A SU 455614A SU 109273 A1 SU109273 A1 SU 109273A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitriding
- heat
- stainless
- resistant steels
- etching
- Prior art date
Links
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
Изобретение относитс к способам азотировани нержавеющих и жароупорных сталей аустенитного класса. Известные способы такого рода не обеспечивают однородных результатов по твердости азотированных изделий, вследствие того, что поверхность изделий окисл етс в период загрузки в печь, выдувани из муфел аммиака и в процессе нагрева дл азотировани .The invention relates to methods for nitriding stainless and heat-resistant steels of the austenitic class. Known methods of this kind do not provide uniform results on the hardness of nitrided products, due to the fact that the surface of the products is oxidized during the period of loading into the furnace, blowing ammonia from the muffles and during the heating process for nitriding.
Дл устранени этого недостатка предлагаетс , согласно изобретению , подлежащие азотированию поверхности после травлени подвергать фосфатированию. Благопри тное действие травлени и последующего фосфатировани св зано с разрушением окисной пассивирующей пленки. Фосфорна пленка обладает высокой термической стойкостью (до 600°), в результате чегоTo eliminate this drawback, it is proposed, according to the invention, that the surfaces to be nitrided after etching be phosphated. The beneficial effect of etching and subsequent phosphatization is associated with the destruction of the oxide passivating film. Phosphoric film has a high thermal resistance (up to 600 °), resulting in
она надежно защищает обрабатываемую поверхность от окислени в начальный перпод азотировани и нагрева.it reliably protects the treated surface from oxidation to the initial perod of nitriding and heating.
Применение фосфатировани при азотировании нержавеющих и жароупорных сталей аустенитного класса позвол ет получить однородное распределение твердости на повер хности обрабатываемых изде;1ий .The use of phosphating in nitriding of austenitic grade stainless and heat-resistant steels allows to obtain a uniform distribution of hardness on the surface of the products being processed;
Предмет изобретени Subject invention
Способ азотировани нержавеющих и жароупорных сталей аустенитного класса с предварительным травлением азотируемых поверхностей , отличающийс тем, что, с целью устранени окислени в начальный период азотировани , обрабатываемые поверхности после травлени подвергают фосфатированию .The method of nitriding stainless and heat-resistant steels of austenitic class with preliminary etching of nitrided surfaces, characterized in that, in order to eliminate oxidation, in the initial period of nitriding, the treated surfaces after etching are subjected to phosphating.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU455614A SU109273A1 (en) | 1953-08-11 | 1953-08-11 | The method of nitriding of stainless and heat-resistant steels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU455614A SU109273A1 (en) | 1953-08-11 | 1953-08-11 | The method of nitriding of stainless and heat-resistant steels |
Publications (1)
Publication Number | Publication Date |
---|---|
SU109273A1 true SU109273A1 (en) | 1956-11-30 |
Family
ID=48382317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU455614A SU109273A1 (en) | 1953-08-11 | 1953-08-11 | The method of nitriding of stainless and heat-resistant steels |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU109273A1 (en) |
-
1953
- 1953-08-11 SU SU455614A patent/SU109273A1/en active
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