机械扩径是制造管筒形零件的一种精密成形方法。
Mechanical Expanding is one of the finishing processes in cylindrical part forming.
详细分析了管端机械扩径的变形过程，总结了机械扩径成形条件；
On the second place, detailed analysis was implemented for the pipe end deformation process during mechanical expanding, and forming criterion was also obtained.
该方法在机械扩径工艺参数设计方面的应用结果表明，其优化效果好于非稳健优化设计方法。
A robust optimization designing method for the technical parameters of plastic forming processes based on quality control is proposed in this paper.
研究表明，用多个扇形模具块对焊管端口进行机械扩径时，椭圆管坯的塑性变形具有显著的局部特性，且主要集中于悬空段。
The study shows that plastic deformation of the elliptical tube which has a significant local characteristic mainly concentrates in the vacant section, when expanding using several expanding punches.
研究表明，用多个扇形模具块对焊管端口进行机械扩径时，椭圆管坯的塑性变形具有显著的局部特性，且主要集中于悬空段。
The study shows that plastic deformation of the elliptical tube which has a significant local characteristic mainly concentrates in the vacant section, when expanding using several expanding punches.
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