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用煤矸石代替刚玉、铝矾土材料制造精铸型壳的鉴定会于1986年11月8、9日由航空部科技局主持,在湖南株州南方动力机械公司召开。代表们听取了课题工作报告,研究报告,以及东安公司、南方公司应用报告,参观了煤矸石——硅酸乙醇涂料的制壳工艺及其型壳和铸件。到会代表一致认为:煤矸石——硅酸乙酯与刚玉、铝矾土型壳相比较,高温抗变形能力强,铸件尺寸稳定、精度高。浇注后的残留强度低,明显减少了铸
Coal gangue instead of corundum, bauxite material casting shell identification will be November 8, 1986 presided over by the Aviation Technology Bureau, held in Hunan Zhuzhou Southern Power Machinery Company. The delegates listened to the project work report, research report, application report of Dongan Company and Nanfang Company, and visited the shell making process and the shell and castings of the gangue-silicate ethanol coating. Representatives agreed to the meeting: gangue - ethyl silicate and corundum, bauxite shell compared to high temperature anti-deformation ability, casting size stability, high precision. Residual strength after pouring is low, significantly reducing the casting