锻压技术

国产锆合金板料冲裁间隙的有限元分析

英文标题：Finite element analysis on sheet metal blanking clearance of domestic Zr alloys

作者：袁佳健胡仲勋毛建中宋建力

分类号：TG386.2

出版年,卷(期):页码：2016,41(6):4-9

摘要：

锆合金常用于制作核电设备的重要元器件。为了提高国产锆合金板料冲裁的产品质量与模具寿命，针对锆合金板料价格昂贵和各向异性明显的特点，利用有限元模拟软件研究不同冲裁间隙下的冲裁效果。通过试验测得国产锆合金的材料参数，利用有限元软件模拟分析在冲裁过程中冲裁力、冲裁功和工件断面质量随冲裁间隙变化的趋势；研究合理冲裁间隙的取值、以及厚向异性系数对合理冲裁间隙和断面质量的影响；通过裂纹扩展方向分析和实物断面分析验证了模拟分析的正确性。结果表明，厚度为0.47 mm锆合金板料的合理冲裁间隙为0.035 mm；厚向异性系数的变化对合理冲裁间隙的取值没有明显影响，但是对工件断面质量有显著影响。

Zr alloys are commonly used in manufacturing of important components of nuclear power equipment. In order to improve product quality and prolong die life of sheet metal blanking of domestic Zr alloys, the effects of blanking under different blanking clearances were studied by finite element simulation software based on the characteristics of high cost and obvious anisotropy of sheet metal of Zr alloy. Then, material parameters of domestic Zr alloys were measured by test, the changing trend of the blanking force, the work of blanking and sectional quality of workpiece with the change of blanking clearance were simulated by finite element simulation software in blanking. Furthermore, the values of reasonable blanking clearance and influences of coefficients of thickness anisotropy on reasonable blanking clearance and sectional quality were researched, and the validity of simulation results was finally analyzed and verified by the analysis of crack propagation orientation and section analysis of material objects. The results indicate that the reasonable blanking clearance is 0.035 mm for Zr alloy sheet of 0.47 mm. The thickness anisotropy coefficient has no effect on blanking clearance, but influences the qualities of workpiece cross section obviously.

基金项目：

国家科技重大专项子项（2013ZX06004009）

作者简介：袁佳健（1991-），男，硕士研究生 E-mail：danny66163@163.com 通讯作者：胡仲勋(1964-），男，博士，副教授 E-mail：hdhuhzx0505@163.com

参考文献：

［1］袁改焕, 卫新民. 锆合金研究进展及我国核电站用锆材国产化的思考[J]. 钛工业进展, 2011, (12): 18-22.Yuan G H, Wei X M. The research progress of the zirconium alloys and the thinking of China's nuclear power station in China[J]. Titanium Industry Progress, 2011,(12): 18-22.

［2］Lemiale V, Chambert J, Picart P. Description of numerical techniques with the aim of predicting the sheet metal blanking process by FEM simulation[J]. Journal of Materials Processing Technology, 2009, 209: 2723-2734.

［3］张凌云, 蔺锋, 李振军. 一种确定冲裁间隙试验模具的设计[J]. 锻压技术, 2012,37(6): 80-83.Zhang L Y, Lin F, Li Z J. Design of experimental die for determining blanking clearance[J]. Forging & Stamping Technology, 2012,37(6): 80-83.

［4］Faura F, García A, Estrems M. Finite element analysis of optimum clearance in the blanking process[J]. Journal of Materials Processing Technology, 1998, 80-81: 121-125.

［5］方刚, 曾攀. 金属板料冲裁的有限元模拟[J]. 金属学报, 2001, 37(6): 653-657.Fang G, Zeng P. Finite element simulation for blanking process of sheet metal[J]. Acta Metallrugica Sinica,2001, 37(6): 653-657.

［6］Kwak T S, Kim Y J, Bae W B. Finite element analysis on the effect of die learance on shear planes in fine blanking[J]. Journal of Materials Processing Technology, 2002, 130-131: 462-468.

［7］Shim K H,Lee S K, Kang B S, et al. Investigation on blanking of thin sheet etal using the ductile fracture criterion and its experimental verification[J]. Journal of Materials Processing Technology, 2004, 155-156: 1935-942.

［8］Soumya Subramonian, Taylan Altan, Bogdan Ciocirlan, et al. Optimum selection of variable punch-die clearance to improve tool life in blanking non-symmetric shapes[J]. International Journal of Machine Tools & Manufacture, 2013, 75: 63-71.

［9］蔺锋. 板料合理冲裁间隙确定方法的研究[D]. 沈阳：沈阳航空航天大学, 2012.Lin F. The Research of Determining Method on Reasonable Sheet Metal Blanking Clearance[D]. Shenyang:Shenyang Aerospace University, 2012.

［10］胡建军, 许洪斌, 金艳. 基于有限元计算的金属断裂准则的应用与分析[J]. 锻压技术,2007,31(6):100-102.Hu J J, Xu H B, Jin Y, et al. Application and analysis of mental fraction behavior based on FEM calculation[J]. Forging & Stamping Technology, 2007,31(6): 100-102.

［11］杨树宝, 陈大宏, 阎军. 韧性断裂准则的研究及其在冷镦成形过程中的应用[J]. 重型机械,2007,3(6):19-23.Yang S B, Chen D H, Yan J. Research on ductile fraction criteria and the application in cold heading process[J]. Heavy Machinery, 2007, 3(6): 19-23.

［12］GB/T 15825.8—2008，成形极限图(FLD)测定指南[S]. GB/T 15825.8—2008,Guidelines for the determination of forming-limit diagrams[S].

［13］GB/T 16743—2010，冲裁间隙[S]. GB/T 16743—2010， Blanking clearance[S].

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】