peel-back
3.A detailed introduction was made to the properties of the wet coated sand suitable for multi-station shell mould shooting machine; the development of a sort of high strength coated sand with low resin content: the shaping index and wetness adjusting process: analysis and prevention of peel back defect of shells made with overturning hopper process; test method of peel back resistance of coated sand: pinhole defect analysis of high Ni ductile iron shell mould castings and application of anti-pinhole coated sand.
