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(19)

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2 736 246

(13)

(51)

IPC

B22F3/24(2006-01-01)

B22F3/12(2006-01-01)

C23C8/36(2006-01-01)

C22F1/18(2006-01-01)

C21D1/72(2006-01-01)

C21D9/22(2006-01-01)

C22C29/00(2006-01-01)

(21) (22)

Application

2019116142, 2019-05-27

(24)

Start date

2019-05-27

(22)

Actual filing date

2019-05-27

(45)

Published

2020-11-12

(72)

Inventor

Bogodukhov Stanislav IvanovichKozik Elena StanislavovnaSvidenko Ekaterina Valerevna

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Orenburgskij Gosudarstvennyj Universitet

METHOD FOR HARDENING OF ULTRAFINE HARD ALLOY BY NITRATION Russian patent published in 2020 - IPC B22F3/24 B22F3/12 C23C8/36 C22F1/18 C21D1/72 C21D9/22 C22C29/00

Abstract RU 2736246 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to hardening of superdispersed hard alloy. First ultrafine carbide is sintered at temperature of 1,400–1,650 °C and cooled, and then nitriding is conducted in a vacuum oven under nitrogen at temperature of 900–1,200 °C and pressure of 5 Pa.

EFFECT: higher degree of hardening of ultrafine hard alloy and resistance to cutting.

1 cl, 3 dwg, 4 tbl

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RU 2 736 246 C1

Authors

Bogodukhov Stanislav Ivanovich

Kozik Elena Stanislavovna

Svidenko Ekaterina Valerevna

Dates

2020-11-12—Published

2019-05-27—Filed