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(19)

(11)

2 502 809

(13)

(51)

IPC

C21D1/18(2006-01-01)

C21D1/25(2006-01-01)

C21D1/46(2006-01-01)

C21D1/58(2006-01-01)

(21) (22)

Application

2012116331/02, 2012-04-23

(24)

Start date

2012-04-23

(22)

Actual filing date

2012-04-23

(45)

Published

2013-12-27

(72)

Inventor

Murav'Ev Vasilij IllarionovichFrolov Aleksej Valer'EvichBakhmatov Pavel VjacheslavovichSablin Pavel AlekseevichMartynjuk Aleksej Mikhajlovich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnicheskij Universitet"

STEEL HEAT TREATMENT METHOD Russian patent published in 2013 - IPC C21D1/18 C21D1/25 C21D1/46 C21D1/58

Abstract RU 2502809 C1

FIELD: metallurgy.

SUBSTANCE: steel 30"ХГСА" is heated in NaCl-KCl melt till temperature is 900°C, exposed for 2 hours, hardened in oil; then, triple hardening and heating in the same melt is performed up to 900°C with isothermal exposure during 10 seconds and oil hardening, and further, low tempering is performed at the temperature of 200°C during 1 hour.

EFFECT: improving strength and ductility.

1 tbl, 1 ex

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RU 2 502 809 C1

Authors

Murav'Ev Vasilij Illarionovich

Frolov Aleksej Valer'Evich

Bakhmatov Pavel Vjacheslavovich

Sablin Pavel Alekseevich

Martynjuk Aleksej Mikhajlovich

Dates

2013-12-27—Published

2012-04-23—Filed