Transactions of Materials and Heat Treatment

Title：Research of process parameters on B-pillar inner based on HSSTWB

Authors： Zhang Shuangjie Zhang Zhao Yan Huajun Han Binghui He Yang Jia Yafei

Unit： Hebei University of Science and Technology Hebei Jinhuan-Mould Co. Ltd.

KeyWords： B-pillar inner high strength steel tailor welded blank orthogonal test springback compensation

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2014,39(3):29-33

Abstract：

High-intensity laser welded blanks have the advantage of reducing body weight, saving energy and protecting environment, improving body safety and so on. The effect of process parameters on forming B-pillar of car based on differential high strength steel tailor welded blank (HSSTWB)B340/590DP was researched. The orthogonal experiment scheme of four process parameters was set up, and the process patameters include punching speed, orthogonal program BHF, die clearance and friction coefficient. The forming process of B-pillar panel was simulated using the finite element software Dynaform, and the best parameters which effect minimum rate of thinning were obatained. The correction of drawing die was finished using the springback compensation module, and the process test was made using the optimized process parameters. The test results are consistent with the simulation results, the forming propety of parts is well, the welding line does not rupture, the springback value is less than 1mm and the minimum rate of thinning is less than 20%. When finite element method is integrated with process test, the number of repairing die reduces and qualified parts are obatained.

Funds：

石家庄市科技局重大项目（12108151A）

Reference：

［1］刘文华, 何天明. 高强度钢在汽车轻量化中的应用[J]. 汽车工艺与材料, 2008, (11): 49-51.Liu Wenhua, He Tianming. High strength steel in automobile lightweight application[J]. Automotive Technology and Materials, 2008, (11): 49-51.
［2］宋燕利,华林.车身覆盖件拼焊板冲压成形技术的研究现状及发展趋势[J]. 中国机械工程, 2011, 22(1): 115-116.Song yanli, Hua lin. Current research status and trends of tailor welded blanks applied in auto body stamping[J]. China Mechanical Engineering, 2011, 22(1): 115-116.
［3］Heller T, End B, Ehrhardt B, et al. New high strength steels production[J]. Properties & Applications, 1998, 16(3): 25-34.
［4］李贵, 柳玉起, 柯俊逸, 等. 先进高强度钢板DP590回弹试验及数值模拟研究[J]. 锻压技术, 2013, 38(5): 50-55.Li gui, Liu yuqi, Ke Junyi, et al. Experimental reasearch and numerical simulation of spingback for advanced high strengh steel- DP590[J]. Forging & Stamping Technology, 2013, 38(5): 50-55.
［5］Chen G, Chen X, Shi F. Material and processing modeling of dual phase steel[J]. Front Rails for Crash Ahsss Proceedings, 1998, (7): 161-170.
［6］Shaw J,Watanabe K,Chen M. Metal forming characterization and simulation of advanced high strength steels[J]. SAE, 2001, 1(11): 1-10.
［7］邢忠文, 方华松, 徐伟力. 汽车B柱成形仿真与分析[J]. 锻压技术, 2008, 33(2): 27-30.Xing zhongwen, Fang huasong, Xu weili. Simulation and formability analysis of drawing process for car B pillar[J]. Forging & Stamping Technology, 2008, 33(2): 27-30.
［8］张招. 基于高强度薄板的B柱内板回弹分析及成形工艺研究[D]. 石家庄：河北科技大学, 2012.Zhang zhao. Springback Analysis and Drawing Process Research of B-pillar Inner Based on High-strongth Steel[D]. Shijiazhuang:Hebei University of Science and Technology, 2012.
［9］陈和清. 基于汽车高强度板的冲压回弹基础研究[D]. 重庆：重庆大学, 2008.Chen heqing. Basic Research on Stamping Springback of Automobile High Strength Sheet Metal[D]. Chongqing:Chongqing Institute of Technology, 2008.
［10］Cedric Z,Raig X, Miller E, et al. A Bench-mark test for springback experimental procedure sand results of a slit-ring test[J].SAE Technical Paper Series, 2005, 83(1): 1-8.

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