The coatings composed by the chosen refractory is crackfree in high temperature.The castings using the coatings is free of surface defect and the surface roughness can reach 18 - S.
根据此法选出的耐火材料所组成的涂料在高温急热时不开
，浇注出的铸件
缺陷，粗糙度
18-S。
的The coatings composed by the chosen refractory is crackfree in high temperature.The castings using the coatings is free of surface defect and the surface roughness can reach 18 - S.
根据此法选出的耐火材料所组成的涂料在高温急热时不开，浇注出的铸件缺陷，粗糙度18-S。
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