锻压技术

L形截面环形锻件的制坯工艺研究

英文标题：Blocking technology research on L-shaped section ring forgings

作者：孙琦昊王雷刚吴君三戴玉同

分类号：TG76

出版年,卷(期):页码：2011,36(5):14-18

摘要：

在L形截面环形锻件的生产中，如果毛坯形状和尺寸设计不合理，容易在轧制过程中出现拉料、夹皮和毛刺等缺陷，并直接影响到模具的寿命。根据体积不变原理和锻造过程中金属的分配原则，提出了基于刚性平移原理的制坯工艺，选择合理的分界面，优化设计了毛坯，从而得出罩模的形状和尺寸，并借助有限元数值模拟对轧制过程进行模拟，优化分析制坯过程。实验证明，采用该制坯工艺设计罩模可以有效的避免上述缺陷，模拟结果与实验吻合。

During the production of L-shaped section ring forgings, if the dimensions and structure of the blank are designed unreasonable, then it is prone to engender defects of groove, clip skin and burr in rolling process,which directly affect the service life of mould. According to its volume principle and metal distribution principle in forging process, and based on rigid translation principle , the blocking technology was put forward, then the interface was correctly chosen, the blank was designed optimally, and the shape and dimensions of mask mode were confirmed. With the finite element numerical simulation , the rolling process was simulated and analyzed optimally. The experiments show that the mask mode designed by this technology can effectively avoid that defects, and the simulation results coincide with experimental data well.

基金项目：

参考文献：

[1]许思广,姚开云,郭希学. 几种不同截面形状的环件轧制有限元分析[J]. 锻压技术,1993,18（2）：44-48.

[2]Casotto S, Pascon F, Habraken A M, et al. Thermo mechanical metallurgical model to predict geometrical distortions of rings during cooling phase after ring rolling operations[J]. Int. J. Mach. Tool. Manuf., 2005, 45(6): 657-664.

[3]李春天,黄欣. 环件轧制技术及其在国内的应用[J]. 锻压装备及制造技术,2004, 39（5）：8-13.

[4]胡正寰,刘晋平.零件轧制技术的现状与展望[J].航空制造技术,2004，(3): 49-51.

[5]Padmasirivipul Ranatung.A modeling of profile ring rolling with upper bound elemental technique[D].Ohio University PhD Dissertation,2002.

[6]华林,黄兴高,朱春东. 环件轧制理论和技术[M]. 北京:机械工业出版社,2001.

[7]刘小刚,吴永安,宋捷. 轴承钢环件轧制端面凹坑与折叠缺陷原因分析[J]. 大型铸锻件，2011,（1）：16-19.

[8]汪大年. 金属塑性成形原理[M].北京:机械工业出版社,1996.

[9]徐秉业. 塑性力学[M].北京:高等教育出版社,1989.

[10]Davey K,Ward M J.A practical method of finite element ring rolling simulation using the ALE flowformulation[J].International Journal of Mechanical Science,2002,44:165-190.

[11]郭正华,解春雷,李尚健. 环件热轧动态过程有限元模拟[J]. 塑性工程学报，1999,6（2）：62-67.

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