By mean of adjusting the position and shaps of risers, shrinkages and porositi es in balancing axle case are eliminated on the principle of direirional solidification, its density is a lso improved.

• 根据动态顺序凝固的原则，对斯太尔平衡轴壳铸钢件设计合理的冒口位置和形状；有效地消除了铸件热节部位的缩孔，提高铸件的致密度。