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Application

5067931/02, 1992-10-13

(22)

Actual filing date

1992-10-13

(45)

Published

1998-01-20

(72)

Inventor

Khomjak B.S.Shumejko V.I.Ivanchenko B.F.Khomjak P.B.Khomjak I.B.Kaljuzhnyj N.P.Pesotskij V.P.

(73)

Holder

Nauchno-Proizvodstvennoe Gosudarstvennoe Predprijatie Pri Donskom Gosudarstvennom Tekhnicheskom Universitete

METHOD OF STRENGTHENING TOOLS OF TUNGSTENLESS HARD ALLOYS Russian patent published in 1998 - IPC

Abstract RU 2102526 C1

FIELD: coatings. SUBSTANCE: tool is polished and covered by tungsten carbide layer in working zone using e.g. spark or laser techniques, whereupon polishing is repeated and ion-vacuum coating is applied. After the first polishing operation, matrix phase may be shielded by charging with tungsten oxide powder, tungsten-based layer coated in working zone optionally containing at least one element from the group including ruthenium, rhodium, and palladium (0.05-0.2% each), and also 3-6% hafnium and 2-4% rhenium. EFFECT: improved procedure.

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RU 2 102 526 C1

Authors

Khomjak B.S.

Shumejko V.I.

Ivanchenko B.F.

Khomjak P.B.

Khomjak I.B.

Kaljuzhnyj N.P.

Pesotskij V.P.

Dates

1998-01-20—Published

1992-10-13—Filed

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