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
，
出的铸件表
无缺陷，表
达18-S。
缝的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，出的铸件表无缺陷，表达18-S。
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