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Application

2000104708/02, 2000-02-25

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Start date

2000-02-25

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Actual filing date

2000-02-25

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Published

2001-02-27

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Inventor

Znamenskij L.G.Kulakov B.A.Ivochkina O.V.

(73)

Holder

Juzhno-Ural'Skij Gosudarstvennyj Universitet

METHOD FOR PREPARING SAND FOR MAKING MOLDS AND CORES WITH GYPSUM BINDER AT PRODUCING CASTINGS OF NON-FERROUS AND PRECIOUS METALS Russian patent published in 2001 - IPC

Abstract RU 2163524 C1

FIELD: foundry. SUBSTANCE: method for preparing sand comprises steps of agitating sand ingredients and vacuum treatment of sand; simultaneously with vacuum treatment applying to sand ultrasonic oscillation field for 2-6 min. Combination of ultrasonic and vacuum treatment processes provides intensive separation of air bubbles from treated sand. EFFECT: enhanced rheological properties of sand and physico-mechanical characteristics of molds and cores. 1 tbl

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RU 2 163 524 C1

Authors

Znamenskij L.G.

Kulakov B.A.

Ivochkina O.V.

Dates

2001-02-27—Published

2000-02-25—Filed

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