Abstract : 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 文摘:根據動態(tài)順序凝固的原則,對斯太爾平衡軸殼鑄鋼件設計合理的冒口位置和形狀;有效地消除了鑄件熱節(jié)部位的縮孔,提高鑄件的致密度。