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由上海交通大学铸造教研室研制成功的砂型铸造高强度 D 型石墨铸铁于1988年1月16日通过技术鉴定。砂型铸造高强度 D 型石墨铸铁是一种新颖灰铸铁材料,可广泛应用于铸造生产。该
By the Shanghai Jiaotong University foundry teaching room successfully developed sand casting high-strength D-type graphite cast iron on January 16, 1988 through technical appraisal. Sand Casting High-strength D-type graphite cast iron is a novel gray cast iron material that can be widely used in foundry production. This