STYDY OF MOLD COATING FOR V - PROCESS TECHNOLOGY

Abstract

V - process produces casting with a smooth surface and excellent detail. In V - process, however mold is inclined to collapse and liquid metal is easy to penetrate into mold. The rearch project studied mold coating material for aluminum alloy casting in V - process. The composition of mold coating consists of quart powder, bentonite clay, colophony, boric acid and alcohol. The purpose of this project is to choose a reasonable composition of mold coating to achieve the necessnary technology properties (stability of suspension, adhesive capacity, drying time) and to receive castings with high quality.