确定锥形管无模拉伸速度制度的数学模型  

Mathematical Model to Schedule Dieless Drawing Speed for Tapered Tubes

作　　者：夏鸿雁[1] 吴迪[1] 栾瑰馥[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2009年第6期833-836,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50334010)

摘　　要：无模拉伸是一种金属柔性塑性加工方法,它的应用消除了常规拉拔过程存在的缺陷,使轴向变断面制品的拉伸成形以及难变形材料的成形加工问题得到很好解决.在分析锥形管无模拉伸的变形机制及可行性的基础上,提出了锥形管无模拉伸速度或冷热源移动速度的理论计算方法,并给出了相应的数学模型.实验研究证明,提出的速度模型较好地表达了无模拉伸速度变化规律,可用于确定有关的速度制度.Dieless drawing, as a flexible metal forming technique, could provide rods/tubes with varied cross-section in axial direction and some other formed materials which are hard to be deformed by conventional drawing process. Based on the analysis of deformation mechanism and feasibility of tapered tubes via dieless drawing process, the calculation method of dieless drawing speed and hot/cooling source moving speed during tube forming is proposed theoretically with a relevant mathematical model given. Experimental investigation results showed that the mathematical model indicates variation of dieless drawing speed and hot/cooling source moving speed quite well, and it is available to schedule the two different speeds for dieless drawing.

关 键 词：锥形管 无模拉伸 速度变化规律 数学模型 柔性加工方法 

分 类 号：TG356.5[金属学及工艺—金属压力加工]