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.
根据此法的耐火材料所组成的涂料在温急热时不开裂,浇注的铸件无缺陷,粗糙度达18-S。
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