1·Complete Stair calculations: Risers, Treads, Stringers and Incline Angle.
完成楼梯计算：冒口，踏，特约记者和倾斜角度。
2·The foundry method was designed based on the Proportional solidification theory. Step gating system, connor risers and chills were adopted. Successful result was obtained.
根据均衡凝固理论设计工艺，采用阶梯式浇注系统，压边冒口和冷铁，取得了满意效果。
3·In order to eliminate the shrinkages, the casting process was optimized by using pad and insulated risers, which decreased the shrinkages, so the reasonable casting process was gained.
为了消除这些缺陷，采用加补贴和保温冒口的方法对铸造工艺进行了优化，最大程度地减小和消除铸造缺陷，获得合理的铸造工艺方案。