锻压技术

基于正交试验的内六角冲头磨损分析及工艺参数优化

英文标题：Wear analysis and process parameter optimization on hexagon punch based on orthogonal test

作者：莫杰刘坚李旋郑琼娥

关键词：冷镦成形 Archard磨损理论内六角冲头模具磨损锥面角度冲头硬度进给速度

分类号：TG375

出版年,卷(期):页码：2022,47(9):1-6

摘要：

为了减少某车用内六角螺栓头部冷镦成形冲头的磨损量，基于Archard磨损理论对其进行了研究。以降低冲头磨损量为主要目标，选取冲头的锥面角度、冲头硬度、摩擦因数、进给速度为试验因素，设计了L16(44)正交试验并采用DEFROM进行了有限元仿真。通过对试验结果进行极差分析与方差分析，得到各因素对于冲头磨损的影响程度顺序为：冲头锥面角度>冲头硬度>摩擦因数>进给速度；最优工艺参数组合为：冲头锥面角度为25°，冲头硬度为67 HRC，摩擦因数为0.10，进给速度为100 mm·s-1，在最优参数组合下，冲头的磨损量由3.39 ×10-6 mm降低至2.16×10-6 mm。研究结果表明，冲头磨损主要发生于冲头锥面与冲头韧带的连接处，优化后的工艺参数使冲头的磨损量降低，对同类型冲头磨损的研究具有参考意义。

In order to reduce the wear amount of the cold upsetting punch at the head of hexagonal bolt for a vehicle, the Archard wear theory was used to research it. Then, taking reducing the punch wear amount as the main objective and selecting cone angle of punch, punch hardness, friction factor and feeding speed as the test factors, L16(44) orthogonal test was designed, and finite element simulation was performed by DEFROM. Furthermore, the influence degree order of each factor on the punch wear was obtained by the range analysis and variance analysis of the test results,that is cone angle of punch>punch hardness>friction factor>feeding speed, and the optimal process parameter combination was the punch cone angle of 25°, the punch hardness of 67 HRC, the friction factor of 0.10, and the feeding speed of 100 mm·s-1. Under the optimal parameter combination, the wear amount of punch was reduced from 3.39×10-6 mm to 2.16×10-6 mm. The results show that the punch wear mainly occurs at the connection between conical surface of punch and ligament of punch. Thus, the optimized process parameters reduce the wear amount of punch, which has reference significance for the research on the wear of the same type of punch.

基金项目：

国家自然科学基金创新研究群体基金资助项目(51621004)

莫杰(1996-)，男，硕士研究生 E-mail：mojie@hnu.edu.cn 通信作者：刘坚(1975-)，男，博士，教授，博士师导师 E-mail：liujian0108@vip.163.com

参考文献：

[1]刘俊英. 基于正交试验的车用螺母成形分析及模具磨损优化 [J]. 锻压技术，2020,45(2):182-187，193.

Liu J Y. Forming analysis and mould wear optimization on nuts for vehicle based on orthogonal test [J]. Forging & Stamping Technology，2020,45(2): 182-187,193.

[2]裴未迟, 张玉强,孟宪举.基于Deform轴类零件台阶圆角开式冷挤压工艺有限元模拟[J].现代制造工程,2011，(6):73-75，83.

Pei W C, Zhang Y Q, Meng X J. Finite element simulation for shoulder fillet of shaft parts in open-die cold extrusion process based on deform[J]. Modern Manufacturing Engineering, 2011，(6):73-75，83.

[3]赵志繁, 侯怀书,钱瑞福，等.六角法兰面锁紧螺母冷镦挤成型数值模拟及优化[J].热加工工艺,2020,49(17):101-104，107.

Zhao Z F,Hou H S,Qian R F,et al.Numerical Simulation and optimization of cold heading-extrusion of hexagon flange face locking nuts[J]. Hot Working Technology，2020,49(17):101-104，107.

[4]Kim T H, Kim B M, Choi J C .Prediction of die wear in the wire-drawing process[J]. Journal of Materials Processing Technology, 1997, 65(1): 11-17.

[5]朱晟平, 莫帅,王霄.基于Deform与Isight的六角法兰面螺栓冷镦模具设计与优化[J].机械设计,2019,36(3):50-55.

Zhu S P, Mo S, Wang X. Design and optimization of the cold-heading die for hexagonal flange bolts based on Deform and Isight[J]. Journal of Machine Design, 2019, 36(3):50-55.

[6]刘瑞江, 张业旺,闻崇炜,等.正交试验设计和分析方法研究[J].试验技术与管理,2010,27(9):52-55.

Liu R J,Zhang Y W,Wen C W, et al. Study on the design and analysis methods of orthogonal experiment[J].Experimental Technology and Management,2010,27(9):52-55.

[7]陈庭. 基于正交试验的螺母冲裁成形模具磨损分析及参数优化[J].锻压技术,2020,45(3):141-145.

Chen T.Wear analysis and parameter optimization in blanking forming for nut based on orthogonal experiment[J]. Forging & Stamping Technology,2020,45(3):141-145.

[8]Lin Z,Xia J,Wang X, et al. Optimization of die profile for improving die life in the hot extrusion process[J]. Journal of Materials Processing Tech., 2003, 142(3): 659-664.

[9]雍治文. SCM435合金冷镦钢线材研制[J].金属制品,2007,(6):44-46.

Yong Z W.Research and manufacture of SCM435 alloy wire rod for cold heading[J]. Metal Products,2007,(6):44-46.

[10]宋寅哲, 金城旭,任靖日,等.基于仿真金属流线的冷锻表面粗糙带预测及改进[J].塑性工程学报,2019,26(4):55-60.

Song Inchul, Jin C X, Ren J R, et al. Prediction and improvement of rough band of cold forging surface based on simulated metal flow lines [J]. Journal of Plasticity Engineering, 2019, 26 (4): 55-66.

[11]苗站, 张治民,于建民,等. 不同参数对铝合金枝杈类构件金属流线的影响及优化[J]. 锻压技术,2021,46(2):105-110.

Miao Z，Zhang Z M，Yu J M，et al. Influence of different parameters on metal streamline of aluminum alloy part with branch and optimization [J]. Forging & Stamping Technology，2021,46(2):105-110.

[12]苑世剑, 李峰,刘钢.不同摩擦挤压过程中金属流动行为的变形分区研究[J].金属学报,2007,(2):199-204.

Yuan S J,Li F,Liu G.Research of metal flow during extrusion process under different friction condition by deforming area division[J]. Acta Metallurgica Sinica,2007,(2):199-204.

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