Transactions of Materials and Heat Treatment

Title：Analysis and improvement on plastic forming process for structure

Authors：

Unit：

KeyWords：

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2020,45(11):7-12

Abstract：

According to the geometric characteristics of an automobile flange shaft structure part, combined with the plastic forming theory, two kinds of cold upsetting extrusion forming process schemes for flange shaft were preliminarily proposed. Then, the forming processes of the two process schemes were simulated by the finite element software DEFORM-3D, and the material flow, the material damage value and the forming load of the two process schemes were analyzed and compared. The results show that the material damage value and the forming load in process scheme 1 are greater than those in process scheme 2, and the flange shaft has the defect of material folding, so the process scheme 2 is adopted. Based on the process scheme 2, aiming at the minimum load of die during the forming process, the orthogonal test with pre-forming cone angle,fillet radius of final forming lower die, friction coefficient and cold upsetting speed was established, the key degree of each test parameter was analyzed, and the optimal process parameters of process scheme 2 were finally obtained. In the end, the parts of two process schemes were trial manufactured respectively. And there is material folding in process scheme 1, but the workpiece is well formed by process scheme 2, which verifies the correctness of finite element simulation.

Funds：

南通航运职业技术学院院级重点招标项目（HYJY/2018A04）；江苏省面上项目（17KJB460010）

姚文俊（1971-），男，工程硕士，副教授 E-mail：1366226431@qq.com

Reference：

[1]关文迁.镁合金轮毂在汽车行业的应用现状和制造工艺[J]. 汽车实用技术,2020，(9):225-226，246.

Guan W Q. Application status and manufacturing process of magnesium alloy wheels in the automotive industry[J]. Automobile Applied Technology,2020，(9):225-226，246.

[2]侯满哲,马宏,庞永俊,等.汽车用铝合金搅拌摩擦焊接薄片冷冲压工艺研究[J]. 热加工工艺,2018,47(7):177-180.

Hou M Z, Ma H, Pang Y J, et al. Study on cold stamping process of aluminum alloy friction stir welded sheet for automobile[J]. Hot Working Technology,2018,47(7):177-180.

[3]黄长清,孙钡,常海平,等. 铸旋轮毂内轮缘部位数值模拟及工艺优化[J]. 塑性工程学报,2018,25(4):65-73.

Huang C Q, Sun B, Chang H P, et al. Numerical simulation and process optimization of inner rim part of cast spinning wheel hub[J]. Journal of Plasticity Engineering, 2018,25(4):65-73.

[4]梁强.活塞销冷镦挤成形微折叠缺陷分析及改进措施[J]. 塑性工程学报,2018,25(6):99-104.

Liang Q. Micro-folding defect analysis and improvement of cold upsetting-extruding process for piston-pin[J]. Journal of Plasticity Engineering,2018,25(6):99-104.

[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]张东民,盛育东,张金玉,等.六角开槽螺母的冷镦工艺优化及数值模拟[J].机械设计与制造,2018,(3):191-194.

Zhang D M, Sheng Y D, Zhang J Y, et al. Numerical simulation and optimization for cold heading of hexagonal slot nut[J]. Machinery Design Manufacture,2018,(3):191-194.

[7]陈阳,董泽宇,张秀英,等.薄壁锁紧螺母冷镦过程模具磨损分析及参数优化[J].铸造技术,2018,39(1):128-131.

Chen Y, Dong Z Y, Zhang X Y, et al. Simulation analysis and parameter optimization on mould wear in cold heading for thin-walled lock nut[J]. Foundry Technology,2018,39(1):128-131.

[8]陈攀,戴益波,郭宇航,等.一种大高径比铜棒镦挤工艺研究[J]. 机电工程技术,2020,49(3):181-184.

Chen P, Dai Y B, Guo Y H, et al. Study on upsetting and extrusion technology of copper bar with large height-diameter ratio[J]. Mechanical Electrical Engineering Technology,2020,49(3):181-184.

[9]张苏鹏,王军丽,章震威,等.复合镦挤法制备超细晶1060铝合金的有限元模拟[J].材料热处理学报,2020,41(5):168-176.

Zhang S P, Wang J L, Zhang Z W, et al. Finite element simulation for preparation of ultra-fine grain 1060 aluminum alloy by cyclic equal channel compression[J]. Transactions of Materials and Heat Treatment,2020,41(5):168-176.

[10]梁强. 长轴类大高径比凸台冷镦成形工艺研究[D].重庆:重庆理工大学,2013.

Liang Q. Process Research on Long Shift of Large Ratio of Height to Diameter Boss Cold Upsetting[D]. Chongqing: Chongqing University of Technology,2013.

[11]陈剑,张东民,周伟民,等. 球头销多工位冷镦挤工艺研究及模具设计[J]. 热加工工艺,2018,47(11):153-156.

Service：

【This site has not yet opened Download Service】【Add Favorite】