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2 725 463

(13)

(51)

IPC

C21D6/00(2006-01-01)

C22F1/11(2006-01-01)

C22C27/06(2006-01-01)

C22C19/05(2006-01-01)

(21) (22)

Application

2019124431, 2019-08-01

(24)

Start date

2019-08-01

(22)

Actual filing date

2019-08-01

(45)

Published

2020-07-02

(72)

Inventor

Adaskin Anatolij MatveevichKirillov Andrej KirillovichKutin Andrej AnatolevichBugrim Viktor NikolaevichKashirtsev Valentin NikolaevichKashirtsev Valentin ValentinovichSapronov Ilya Yurevich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Gosudarstvennyj Tekhnologicheskij Universitet Vo

METHOD FOR HEAT TREATMENT OF HEAT-RESISTANT ALLOY H65NVFT ON BASE OF CHROMIUM FOR INCREASE OF MACHINABILITY BY CUTTING Russian patent published in 2020 - IPC C21D6/00 C22F1/11 C22C27/06 C22C19/05

Abstract RU 2725463 C1

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in metal-working industry. To obtain hardness of not more than 28–30 HRC, pressing workpiece is heated to temperature of 900 °C, isothermal holding for 16 hours and cooling to eliminate residual stresses, after cooling, annealing is performed at 1,280–1,300 °C for 4–6 hours with air cooling and subsequent hardening with 900–950 °C with cooling in oil or air.

EFFECT: improved machinability of workpieces from alloy H65NVFT.

1 cl, 2 dwg, 1 tbl

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RU 2 725 463 C1

Authors

Adaskin Anatolij Matveevich

Kirillov Andrej Kirillovich

Kutin Andrej Anatolevich

Bugrim Viktor Nikolaevich

Kashirtsev Valentin Nikolaevich

Kashirtsev Valentin Valentinovich

Sapronov Ilya Yurevich

Dates

2020-07-02—Published

2019-08-01—Filed