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2 005 811

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C1

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IPC

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Application

5029228/02, 1992-02-25

(22)

Actual filing date

1992-02-25

(45)

Published

1994-01-15

(72)

Inventor

Grachev S.V.Kolpakov A.S.Balandin Ju.A.

(73)

Holder

Balandin Jurij Aleksandrovich

PROCESS OF BOROCOPPERIZING STEEL PRODUCTS IN VIBRATED FLUIDIZED BED Russian patent published in 1994 - IPC

Abstract RU 2005811 C1

FIELD: metallurgy, chemical heat treatment of metallic material surfaces. SUBSTANCE: steel products are heated to a temperature 450-500 C in ammonia medium and allowed to stay for 20-25 min. Thereafter, gaseous products are evacuated, and impregnation process is carried out in fluid medium including the following components, % by weight: boron carbide 1-5; copper oxide 0.01-0.05; sodium tetrafluoroborate 0.1-0.5 and corundum 94.4-98.89. EFFECT: increased wear-resisting properties of steel articles. 1 tbl

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RU 2 005 811 C1

Authors

Grachev S.V.

Kolpakov A.S.

Balandin Ju.A.

Dates

1994-01-15—Published

1992-02-25—Filed

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