锻压技术

汽车转向活塞多向可控分流锻造工艺及试验研究

英文标题：Multi-directional flow controlled forging technology and experimental research on steering piston of automobile

作者：孙红星汪金保刘百宣刘华赵升吨

分类号：TG316

出版年,卷(期):页码：2019,44(10):8-13

摘要：

以转向活塞为研究对象，在分析转向活塞形状结构和锻造生产现状的基础上，对转向活塞精密成形提出了一种全新的工艺方案：多向可控分流锻造。通过等温压缩试验获得了活塞材料的高温塑性变形性能，完成了新工艺成形的三维建模，并对成形过程进行了数值模拟。分析了不同阶段的转向活塞成形，通过对3种不同的工艺方案进行对比分析，获得了优化的方案，其可有效降低载荷约25%。设计并制造了多向联动数控成形压机和模具，通过试验试制出合格转向活塞样件，试验载荷与模拟载荷相差仅为1%，验证了模拟分析的准确性，同时也证明了多向可控分流锻造工艺的可行性。新工艺实现了单工位、低应力、节材、节能和高效制造。

For the steering piston, on the basis of analyzing the structure of steering piston and the current production situation of forging, a new technological scheme of precision forming for steering piston was put forward, namely, multi-directional flow controlled forging. Then, the high temperature plastic deformation properties of piston material were obtained by isothermal compression tests, and the three-dimensional model of new process was established to numerically simulate the forming process. Furthermore, the forming process of steering piston in different stages was analyzed respectively, and the optimized process scheme was obtained by comparing with the three kinds of process schemes to effectively reduce the load by about 25%. Finally, the multi-directional CNC press and die were designed and manufactured, and the qualified steering piston samples were produced through experiments. And the load difference between test and simulation

is only about 1%. Thus, the accuracy of simulation analysis and the feasibility of new process are verified, and the new process realizes single station, low stress forming, material saving, energy saving and efficient manufacturing.

基金项目：

科技部院所基金项目（2013EG119106）

作者简介：孙红星（1975-），男，博士研究生，研究员 E-mail：sunhx@zrime.com.cn

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