在浇注系统设计时，避免金属液冲击型腔，避免铸件直浇道横浇道形成框形结构等也是避免热裂的有效措施。
Some effective measures to prevent hot tear , including avoidance of liquid metal to impact mold cavity and of casting-sprue-runner to form rectangular structure , were proposed during design of gating system .
框形结构