The complete structure with defects-free can be realized by optimizing process and rationally assembling riser and chill to ensure the directional solidification and effective feeding of melt. 模拟结果表明:通过优化铸造工艺,合理设置冒口、冷铁,可以保证铸件的顺序凝固和金属液的有效补缩,获得结构完整、没有缺陷的铸件。