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摘要：
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用挤压工艺代替冲压、机加工等生产盒形件 ,是一种很有发展前途的工艺方案。复杂盒形件的挤压不同于规则盒形件的成形 ,本文从复杂盒形件挤压的金属流动特点入手 ,提出了挤压模的具有方向性的止流槽。同时对该零件的变形过程进行了实验研究 ,验证了止流槽控制金属流动的可行性 ,为同类型零件的成形提供了借鉴。
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Extrusion has become an increasingly attractive manufacturing process for the production of boxes,which substituted sheet matel stamping and machining.Complex box differs with regular ones in extrusion ,the article start from matel flow specialities study of complex box during extrusion.A new kind of flow arrest groove with direction is presented on this basis.At the same time,it is validated that flow arrest groove is feasible in controlling matel flow by experiment,provided reference for use in the same type part.
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基金项目：
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作者简介：
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参考文献：
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1 王孝培冲压手册(第二版)北京:机械工业出版社,1990:461
2 闫洪,林治平等盒形件反挤变形的上限分析塑性工程学报,2000(1):26～29
3 YHLu,SWLo.Optimally controlledstrain ratediesforplane strainex trusion.J.Mater.Process.Technol.1999,86:56～66
4 汪大年金属塑性成形原理北京:机械工业出版社,1986:4
5 姚若浩金属压力加工中的摩擦和润滑北京:冶金工业出版社,1990:249
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