石灰石砂铸钢件麻坑缺陷剖析及预防  

Dissection and prevention of pitted Skin onSteel Casting Made from limeston Sand Mold

作　　者：王慕荣[1] 苏勇[1] 包彦堃[1] 蔡保平 

机构地区：[1]浙江大学

出　　处：《铸造》1989年第12期23-25,共3页Foundry

摘　　要：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.Pitted skin has been analysed this defect results from heterogeneous oxidation of the casting surface.Several suggestions are offered for reducing this defect.They are rising density of coating layer under high temperature improving facing sand developing a porous coaing layer with weak oxidition.

关 键 词：石灰石砂 铸钢件 麻坑 缺陷 

分 类 号：TG260.6[金属学及工艺—铸造]