METHOD FOR MAKING CASTING MOLDS Russian patent published in 2003 - IPC

Abstract RU 2206426 C2

FIELD: foundry, namely production of casting molds. SUBSTANCE: method comprises steps of spraying onto metallic pattern and pattern plate polyethylene whose temperature is higher than its melting temperature by 20 -25 C; setting coating for 3 minutes; placing flask and pouring it with refractory filler; sealing flask from upwards by means of film; evacuating it until 0.6 at and removing pattern. EFFECT: enhanced quality of polyethylene coating of pattern, reduced time period for setting coating. 3 cl, 1 ex

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RU 2 206 426 C2

Authors

Dates

2003-06-20—Published

1998-12-16—Filed