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1 790 083

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A1

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IPC

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Application

4869251/02, 1990-09-25

(22)

Actual filing date

1990-09-25

(45)

Published

1995-02-27

(72)

Inventor

Evstifeev E.N.Smirnov V.N.Gumantsov V.I.Evstifeeva A.G.Oleshko P.R.Fokin A.A.Rokash A.V.

MIXTURE TO PRODUCE CASTING RODS AND MOULDS, HARDENING IN HEATED EQUIPMENT Russian patent published in 1995 - IPC

Abstract SU 1790083 A1

FIELD: mechanical engineering. SUBSTANCE: mixture additionally has used zinc-chromic catalyst for methanol production, boric acid, dust-type quartz and iron oxide of following ratio of components (in mass % ): lignosulfonates binder, presented in the form of technical lignosulfonates, modified by 10 % of alkali modifier, - 4.0 - 6.0, used zinc-chromic catalyst - 0.8 - 1.2, boric acid - 0.6 - 1.0, dust-type quartz - 1.0 - 2.0, iron oxide - 0.3 - 0.7, quartz sand - the rest. EFFECT: similar mixture composition allows to increase quality of rods and moulds due to increase of their strength in hot and cold state. 2 cl, 2 tbl

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SU 1 790 083 A1

Authors

Evstifeev E.N.

Smirnov V.N.

Gumantsov V.I.

Evstifeeva A.G.

Oleshko P.R.

Fokin A.A.

Rokash A.V.

Dates

1995-02-27—Published

1990-09-25—Filed

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