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剖析麻坑缺陷后认为,它由铸件表面非均匀氧化造成.提高涂料层高温固密性,改良面砂、不上涂料或制成多孔的均匀弱氧化涂料层均可减免麻坑.
Analysis Ma Hang defects that it is caused by the non-uniform oxidation of the casting surface to improve the coating layer of high temperature and tightness, surface modification of sand, paint or porous uniform uniform weak oxide coating can be reduced Ma Hang.