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2 162 762

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Application

99119673/02, 1999-09-14

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Start date

1999-09-14

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Actual filing date

1999-09-14

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Published

2001-02-10

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Inventor

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

(73)

Holder

Juzhno-Ural'Skij Gosudarstvennyj Universitet

METHOD OF PREPARING SAND FOR MANUFACTURE OF GYPSUM MOLDS AND CORES IN PRODUCTION OF CASTINGS FROM NONFERROUS ALLOYS Russian patent published in 2001 - IPC

Abstract RU 2162762 C1

FIELD: foundry. SUBSTANCE: method includes preparation of aqueous solution of aluminochromophosphate binder with surfactant; treatment of obtained solution with ultrasound for 3-10 min; mixing of obtained solution with prepared sand of dry ingredients by bubbling with simultaneous application of ultrasonic field for 3-8 min. Treatment of aqueous solution of aluminochromophosphate binder and surfactant with ultrasound improved its wetting ability. EFFECT: higher quality of produced castings due to improved rheological properties of sands and mechanical and physical characteristics of gypsum molds and cores. 2 cl, 2 tbl, 2 ex

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RU 2 162 762 C1

Authors

Znamenskij L.G.

Kulakov B.A.

Romanov V.A.

Ivochkina O.V.

Dates

2001-02-10—Published

1999-09-14—Filed

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