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2 445 188

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IPC

B22F3/00(2006-01-01)

B22F1/02(2006-01-01)

C23C8/24(2006-01-01)

(21) (22)

Application

2009148992/02, 2009-12-28

(24)

Start date

2009-12-28

(22)

Actual filing date

2009-12-28

(45)

Published

2012-03-20

(72)

Inventor

Fatkullin Oleg KhikmetovichKlochaj Viktor VladimirovichLukanin Jurij Vasil'EvichFilimonov Aleksandr Vladimirovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF PRODUCING ARTICLES FROM STEEL GRANULES BY POWDER METALLURGY PROCEDURE WITH UNIFORM DISTRIBUTION OF NITROGEN ON ARTICLE VOLUME Russian patent published in 2012 - IPC B22F3/00 B22F1/02 C23C8/24

Abstract RU 2445188 C2

FIELD: process engineering.

SUBSTANCE: invention relates to chemical heat treatment of articles produced by powder metallurgy procedure, namely, to nitration. Method of producing articles from steel granules with increased 0.45-0.6%-content of nitrogen comprises saturating said granules with nitrogen in compaction. Compaction is carried out in capsule wherein, prior to compacting, nitrogen surplus pressure of 15-30 atm is created to ensure required nitrogen concentration.

EFFECT: higher nitrogen content and uniform distribution of nitrogen in compacted article.

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RU 2 445 188 C2

Authors

Fatkullin Oleg Khikmetovich

Klochaj Viktor Vladimirovich

Lukanin Jurij Vasil'Evich

Filimonov Aleksandr Vladimirovich

Dates

2012-03-20—Published

2009-12-28—Filed