The relation between the existing foundry technology and casting defect about QC4110 diesel engine bent axis is analyzed.A new improve scheme on foundry technology is designed.

• 分析了QC4110柴油机曲轴现行铸造工艺与铸件缺陷的关系；设计了一个新的铸造工艺方案；实施后收到了良好的效果.