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Abstract：
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Friction has a great influence on the material plastic forming.The stress-strain condition was analyzed by the cylindrical coordinate during expanding.The stress-strain mathematical expression about friction coefficient was obtained,the effect of friction on the neutral layer was analyzed,and the expressions between relative radius and friction coefficient were gained.The influences of friction on wall thickness uniformity was analyzed and the rips at the end were educed.The different relative radius can be achieved through the friction coefficient control using different lubricants.Optimum friction value of 0.15~0.3 was finally set up.
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Funds：
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河南省自然科学基金资助项目(20060203)
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AuthorIntro：
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Reference：
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[1]岛龙.日本冲压技术[M].北京:大岛技术事务所出版社,1997.
[2]王祖堂.金属塑性成形理论[M].北京:机械工业出版社,1992.
[3]毕涅夫.锻压生产(俄文版)[M].莫斯科:机械出版社,2006.
[4]刘俊生,张彩丽,郑其明,等.管件局部加热缩口、镦粗复合模设计与成形工艺[J].锻压技术,2006,31(1):4-57.
[5]《模具设计手册》编写组.冲模设计手册[M].北京:机械工业出版社,1983.
[6]汪大年.金属塑性成形原理[M].北京:机械工业出版社,1994.
[7]纪莲清,谢欢.内孔翻边时变形区应力应变规律研究[J].锻压技术,2007,32(1):20-23.
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