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分析了用真空实型铸造生产空冷模具钢铸件产生气孔缺陷的原因 ,并从涂料、泡沫塑料模两方面采取工艺措施 ,消除了铸件气孔缺陷 ,提高了空冷模具钢铸件的质量
The reasons for the blowhole defects in the production of air-cooled mold steel castings by vacuum real casting were analyzed. The process measures were taken from coating and foam mold to eliminate the blowhole defects and improve the quality of the castings