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1 707 870

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A1

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IPC

(21) (22)

Application

4444529/08, 1988-06-20

(22)

Actual filing date

1988-06-20

(45)

Published

1995-07-25

(72)

Inventor

Khalilev V.D.Lisova A.A.Ehfros M.G.Krasnov A.N.Starodubova G.N.Kolomazin V.M.

MASS FOR MAKING TOOL FROM SUPER HARD MATERIALS Russian patent published in 1995 - IPC

Abstract SU 1707870 A1

FIELD: tool making. SUBSTANCE: mass has, by mass, 18-65 of cubic bor nitride, 24-62 of abrasive filler, and 5-20 of lead silicate glass which serves as a glass binder. The glass has, by mass, 42.98-47 of SiO2, 42,98-47 of PbO, 2.0-4.68 of Li2O, 2.0-4.68 of K2O, and 2.0-4.68 of Na2O. The oxides are related as SiO2:PbO = 1:1 and Na2O:K2O:Li2O = 1:1:1. EFFECT: enhanced mechanical strength. 2 tbl

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SU 1 707 870 A1

Authors

Khalilev V.D.

Lisova A.A.

Ehfros M.G.

Krasnov A.N.

Starodubova G.N.

Kolomazin V.M.

Dates

1995-07-25—Published

1988-06-20—Filed

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