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摘要：
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鉴于传统的充液拉深中存在液体介质密封困难、装置复杂等问题,提出了以固体颗粒代替液体介质的新工艺,通过对拉深过程中筒壁的受力分析得出固体颗粒介质拉深新工艺可以有效的减小成形过程中筒壁的拉应力,有利于提高材料的成形极限。自行设计了试验模具,通过对LY12M板料的拉深试验,验证了固体颗粒介质拉深新工艺的可行性,试验获得的极限拉深系数达到了0.51,优于传统刚性模拉深工艺。
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Considering the difficult seal of liquid media and complex installation etc.existing in the traditional hydro-mechanical deep drawing,a new process was proposed,which replaced the original liquid medium with the solid granules to solve these problems.Force analysis in the drawing process reveals that the new technology of solid granulemedium deep drawing can effectively reduce tensile stress in the forming process,and it is helpful to improve material formability.Through the experiment of the LY12M sheet with the self-designed die set,the feasibility of the solid granule medium deep drawing process was verified.The limited deep drawing coefficient can be up to 0.51,superior to the traditional rigidity-die deep drawing process.
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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]郎利辉.板材液压成形及无模充液拉深技术[J].塑性工程学报,2002,12(4):30-32.
[2]赵军.圆锥形件拉深成形智能化的研究[D].哈尔滨:哈尔滨工业大学,1997.
[3]欧阳仁.液压机械拉深工艺的研究[J].锻压技术,1980,5(1):11-20.
[4]刑晓东,郭斌,罗荣华.材料粘性压力成形技术研究[J].中国机械工程,2001,12(2):231-234.
[5]赵长财,王银思.固体颗粒介质成形工艺几何参数研究[J].塑性工程学报,2008,10(5):116-120.
[6]赵长财,王银思,李晓丹,等.固体颗粒介质的传压性能实验研究[J].塑性工程学报,2006,13(2):85-88.
[7]Lawrenz K J.在液压深拉深时板料拉裂极限的求法[J].张德荣,译.锻压技术,1981,6(6):15-18.
[8]李新均,万敏,周贤宾.粘性介质成形工艺特点与应用分析[J].锻压技术,1999,24(6):28-30.
[9]王冀.筒形件充液拉深的理论研究和数值模拟及计算机控制[D].西安:西安交通大学,2002.
[10]肖景容.冲压工艺学[M].北京:科学出版社,1988.
[11]陈明祥.弹塑性力学[M].北京:机械工业出版社,2007.
[12]王孝培.冲压手册[M].北京:机械工业出版社,1986.
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