SU109273A1 - The method of nitriding of stainless and heat-resistant steels - Google Patents

The method of nitriding of stainless and heat-resistant steels

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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
Application number
SU455614A
Other languages
Russian (ru)
Inventor
Е.П. Иванюшин
А.П. Куликов
Original Assignee
Е.П. Иванюшин
А.П. Куликов
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Е.П. Иванюшин, А.П. Куликов filed Critical Е.П. Иванюшин
Priority to SU455614A priority Critical patent/SU109273A1/en
Application granted granted Critical
Publication of SU109273A1 publication Critical patent/SU109273A1/en

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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.

SU455614A 1953-08-11 1953-08-11 The method of nitriding of stainless and heat-resistant steels SU109273A1 (en)

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)

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