METHOD FOR CHEMICAL-THERMAL PROCESSING OF COMPONENTS FROM MARTENSITIC STEELS Russian patent published in 2016 - IPC C23C8/26 C23C26/00 

Abstract RU 2574944 C1

FIELD: chemistry.

SUBSTANCE: method for chemical-thermal processing of friction pair components from martensitic steels includes volume quenching of steel blanks and tempering, mechanical processing and nitration of components to specified depth, carried out in two stages: initially at temperature 500-540°C for 10-20 hours, and then at temperature 540-570°C for 20-40 hours. After tempering blanks are heated at rate 30-50°C/hour to temperature 450°C, exposed at temperature 450±10°C for 2-5 hours and air-cooled.

EFFECT: increase of contact-fatigue strength of components and increase of workability of highly-loaded components of friction pairs.

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RU 2 574 944 C1

Authors

Olenin Mikhail Ivanovich

Gorynin Vladimir Igorevich

Berezhko Boris Ivanovich

Filimonov German Nikolaevich

Ovanes'Jan Konstantin Konstantinovich

Fadeev Aleksandr Nikolaevich

Dates

2016-02-10Published

2014-11-17Filed