汽车车身用热成形钢电阻点焊工艺应用现状
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摘要
利用先进高强钢制造车体,兼具轻量化、安全性的特点,在汽车上的应用和使用比例逐年增加。电阻点焊特别适合于汽车车身的大规模自动化生产,是现代汽车车身连接的重要工艺方法。相比于普通钢板,热成形钢具有超高强度和变形系数极小的特点,电阻点焊可焊性差异明显,在焊接过程中易发生热影响区软化、焊核脆化、焊接飞溅等问题。分析热成形汽车钢板的特性和电阻点焊工艺特点,探讨热成形钢的电阻点焊技术及其应用现状。
The advanced high-strength steel used for the manufacture of car body has characteristics of both light weight and safety,so the application and use ratio in the car has increased year by year. Resistance spot welding is particularly suitable for large-scale automated production of automotive bodies,and it is an important process for modern automotive body connections. Compared with ordinary steel plates,hot-formed steel has the characteristics of ultra-high strength and very small deformation coefficient,so as to the weldability of resistance spot welding is very different. In addition,some problems such as heat affected zone softening,weld core embrittlement and welding spatter usually happen during welding. The characteristics of hot formed automotive steel sheets and the characteristics of resistance spot welding process are firstly analyzed,then the resistance spot welding technology of hot formed steel and its application status are discussed.
The advanced high-strength steel used for the manufacture of car body has characteristics of both light weight and safety,so the application and use ratio in the car has increased year by year. Resistance spot welding is particularly suitable for large-scale automated production of automotive bodies,and it is an important process for modern automotive body connections. Compared with ordinary steel plates,hot-formed steel has the characteristics of ultra-high strength and very small deformation coefficient,so as to the weldability of resistance spot welding is very different. In addition,some problems such as heat affected zone softening,weld core embrittlement and welding spatter usually happen during welding. The characteristics of hot formed automotive steel sheets and the characteristics of resistance spot welding process are firstly analyzed,then the resistance spot welding technology of hot formed steel and its application status are discussed.
引文
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[13]X.Sun,E.V.Stephens,M.A.Khaleel.Effects of fusion zone size and failure mode on peak load and energy absorption of advanced high strength steel spot welds under lap shear loading conditions[J].Engineering Failure Analysis,2008,15(4):356-367.
[14]H.Fujimoto,M.Yasuyama,H.Ueda,et al.Static strength of hot-stamped spot welded joints:study on spot weldin g tailored blank technology[J].Welding International,2017,31(9):681-691.
[15]宇慧平,王伟伟,李晓阳,等.超高强钢点焊结构拉剪试验及数值仿真[J].焊接学报,2013,34(10):9-12.
[16]Y.Yu,C.Wang,S.Chen,et al.Study on Intermediate Frequency Spot Welding Process of Hot Stamping High Strength Steel[J].Advanced Materials Research,2011(339):375-378.
[17]朱振柏,曹彪,杨凯.面向汽车制造的中频电阻点焊人机交互系统的设计[J].电焊机,2017,47(6):33-37.
[18]M.Rossini,P.R.Spena,L.Cortese,et al.Investigation on dissimilar laser welding of advanced high strength steel sheets for the automotive industry[J].Materials Science and Engineering:A,2015(628):288-296.
[19]刘东阳,张正林,徐洋,等.博世UIR技术在汽车高强钢电阻点焊上的应用[J].电焊机,2017,47(3):109-112.
[2]张燕瑰,邓劲松,魏宪波,等.高强度钢性能及其在车身中的应用[J].精密成形工程,2013,5(4):64-68.
[3]林建平,王立影,田浩彬,等.超高强度钢热流变行为[J].塑性工程学报,2009,16(2):180-183.
[4]白韶军,王超,陈树君,等.热冲压22Mn B5硼钢中频电阻点焊接头组织及力学性能研究[J].北京工业大学学报,2013,39(5):666-670.
[5]Donders S,Brughmans M,Hermans L,et al.The effect of spot weld failure on dynamic vehicle performance[J].Sound and Vibration,2005(39):16-25.
[6]D.V.Patil,G.A.Sankpal.A Review on Effect of Spot Weld Parameters on Spot Weld Strength[J].International Journal of Engineering Development and R esearch,2014,3(1):1-6.
[7]林建平,胡琦,王立影,等.USIBOR1500超高强度淬火钢板点焊性能研究[J].中国机械工程学报,2007,5(3):317-321.
[8]徐松,黄治军,孙宜强,等.超高强热成型钢板的点焊工艺性能研究[J].钢铁研究,2012,40(2):36-40.
[9]伊日贵,汪小培,张永强,等.PH1500热成形钢电阻点焊焊接性能研究[J].电焊机,2017,47(4):75-79.
[10]H.Fujimoto,M.Yasuyama,H.Ueda,et al.Static strength of hot-stamped spot welded joints—Study on spot welding tailored blank technology[J].QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY,2015,33(2):144-152.
[11]马宁,胡平,翟述基,等.高强度钢板热成形技术及其工程实现[J].汽车工艺与材料,2009(12):12-14.
[12]K.Yamanaka,Y.Ohmori.Effect of Boron on Transformation of Low-Carbon Low-Alloy Steels[J].Tetsu-to-Hagane,1976,62(7):895-904.
[13]X.Sun,E.V.Stephens,M.A.Khaleel.Effects of fusion zone size and failure mode on peak load and energy absorption of advanced high strength steel spot welds under lap shear loading conditions[J].Engineering Failure Analysis,2008,15(4):356-367.
[14]H.Fujimoto,M.Yasuyama,H.Ueda,et al.Static strength of hot-stamped spot welded joints:study on spot weldin g tailored blank technology[J].Welding International,2017,31(9):681-691.
[15]宇慧平,王伟伟,李晓阳,等.超高强钢点焊结构拉剪试验及数值仿真[J].焊接学报,2013,34(10):9-12.
[16]Y.Yu,C.Wang,S.Chen,et al.Study on Intermediate Frequency Spot Welding Process of Hot Stamping High Strength Steel[J].Advanced Materials Research,2011(339):375-378.
[17]朱振柏,曹彪,杨凯.面向汽车制造的中频电阻点焊人机交互系统的设计[J].电焊机,2017,47(6):33-37.
[18]M.Rossini,P.R.Spena,L.Cortese,et al.Investigation on dissimilar laser welding of advanced high strength steel sheets for the automotive industry[J].Materials Science and Engineering:A,2015(628):288-296.
[19]刘东阳,张正林,徐洋,等.博世UIR技术在汽车高强钢电阻点焊上的应用[J].电焊机,2017,47(3):109-112.