铸件夹杂物的主要来源对比研究

Study on the Main Sources of Casting Inclusions

研究了铸件夹杂物的来源和形成方式。结果表明,夹杂物的来源主要是浇包包衬在高温金属液熔蚀下形成的熔渣,随流进入型腔而形成的。浇包采取各种挡渣方式,只能防止漂浮在金属液上面的渣滓。浇包包衬应采用比炉衬耐火度更高的耐火材料才可以减少熔蚀。在浇道系统上设置金属液过滤器可以起到一定的阻渣作用。

The sources and forming methods of casting inclusions were studied. The results show that the inclusions mainly come from the slag formed by ladle lining under the corrosion of high temperature liquid metal and flow into the mold cavity. Casting ladle adopts various ways to block slag, which can only prevent the slag floating on the liquid metal. Casting ladle lining should be more refractory than furnace lining refractory materials to reduce corrosion. Setting molten metal filter on the runner system can play a certain role in slag resistance.