FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. proposed method comprises patterns from foamed polystyrene and fitting or pasting 0.05-3.0 mm-thick plates, or rods, or needles subjected to surfacing. Finished patterns with inserts are assembled into pattern modules, coated with gas-tight anti-burning-in paint and dried. Prior to teeming the melt, pattern modules are arranged in flask, filled with loose moulding material, compacted by vibration, sealed and evacuated.
EFFECT: homogeneous alloyed layer.
4 cl, 1 dwg
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Authors
Dates
2012-07-10—Published
2010-04-06—Filed