JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (3): 73-79.doi: 10.6040/j.issn.1672-3961.0.2014.225

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The property of die-casting dies of wiper repaired by laser welding with filler wire

LIU Lijun1, ZHANG Hongxing1,2, ZHANG Weijie1,2, WANG Gang1,3, QI Meng1,2   

  1. 1. Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China;
    2. College of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China;
    3. College of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150080, Heilongjiang, China
  • Received:2014-08-21 Revised:2015-03-18 Published:2014-08-21

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Abstract: In order to solve the problem of cracks on die-casting dies, the method of combining laser technology and bionic technology was used to repair them. Repairing layer on die-casting dies was prepared utilizing the method of laser wire filling welding; the optimal process parameters were obtained through the microstructure observation, hardness analysis and energy-dispersive X-ray analysis. These parameters were that the current was 180 A, the defocusing amount was -10 mm, the laser pulse width was 8 ms, the wire filling speed was 0.032 m/min, and thermal fatigue test and life test of die-casting dies were performed using these parameters. The experimental results showed that hardness of die-casting dies surface were improved, tissue grain was refined effectively, and the life of mold was extended, which could provide a new thought for repairing the die-casting dies.

Key words: laser welding, welding with filled wire, microstructure characteristics, thermal fatigue, laser techniques, die-casting dies

CLC Number: 

  • TG174
[1] JCA Batista, MC Joseph, C Godoy, et al. Micro-abrasion wear testing of PVD TiN coatings on untreated and plasma nitrided AISI H13 steel[J]. Wear, 2001, 249(10):971-979.
[2] MB Karami, H Sert. The role of PVD TiN coating in wear behavior of aluminum extrusion dies[J]. Wear, 1998, 217(1):46-55.
[3] 王荣滨.铝合金压铸模失效分析、选材与强化处理研究[J].模具制造,2008(2):76-80. WANG Rongbin. The research on aluminum alloy die casting mold failure analysis, selection and strengthen treatment[J]. Die & Mould Manufacture, 2008(2):76-80.
[4] 李会山,杨洗陈,王云山,等.模具的激光修复[J].金属热处理,2004,29(2):39-42. LI Huishan, YANG Xichen, WANG Yunshan, et al. Laser repairing for dies[J].Heat Treatment of Metals, 2004, 29(2):39-42.
[5] 罗洪军,黄小鸥,徐林.铝合金压铸模具的焊接修复[J].新技术新工艺,1997,2(1):15-17. LUO Hongjun, HUANG Xiaoou, XU Lin. Repair welding on aluminum alloy die casting dies[J]. New Technology & New Process, 1997, 2(1):15-17.
[6] CONG Dalong, ZHOU Hong, YANG Miaoqiang, et al. The mechanical properties of H13 die steel repaired by a biomimetic laser technique[J]. Optics & Laser Technology, 2013, 53:1-8.
[7] 李俐群,张亮,戴景明.激光填丝多层焊温度场和应力场的数值模拟[J].中国激光,2011,38(10):1003002. LI Liqun, ZHANG Liang, DAI Jingming. Numerical simulation of temperature and stress fields in wire filling laser multilayer welding[J]. Chinese Journal Lasers, 2011, 38(10):1003002.
[8] 宋威廉.激光加工技术的发展[J].激光与红外, 2006,36(S1):755-758. SONG Weilian. The development of Laser processing technology[J]. Laser & Infrared, 2006, 36(S1):755-758.
[9] WT Preciado, CEN Bohorquez. Repair welding of polymer injection molds manufactured in AISI P20 and VP50IM steels[J].Journal of Materials Processing Technology, 2006, 179:244-250.
[10] 郑世卿,温鹏,单际国.激光热丝焊接过程焊丝过渡行为及其稳定性的研究[J].中国激光, 2014, 41(4):0403008 ZHENG Shiqing, WEN Peng, SHAN Jiguo. The research on welding wires transition behavior and stability in the process of laser welding[J]. Chinese Journal Lasers, 2014, 41(4):0403008.
[11] 宋起飞, 周宏, 李跃,等.仿生非光滑表面铸铁材料的常温摩擦磨损性能[J].摩擦学学报,2006,26(1):24-27. SONG Qifei, ZHOU Hong, LI Yue, et al. The friction and wear properties of bionic non-smooth surface of cast iron material in room temperature[J]. Journal of the Tribology, 2006, 26(1):24-27.
[12] 何涛. 铝合金光纤激光填丝焊接工艺研究[D].武汉:华中科技大学光学与电子信息学院,2011. HE Tao. The research on the welding technology of aluminum alloy fibre-optical wire filling laser[D]. Wu Han: School of Optical and Electronic Information Hust, Huazhong University of Science and Technology, 2011.
[13] WANG Hongying, LI Zhijun. Investigation of laser beam welding process of AZ61 magnesium-based alloy[J]. Acta Metallurgical Sonica, 2006, 19(4):287-294.
[14] YU Yangchun, WANG Chunming, YU Shengfu. Microstructure and property of butt laser joints of aluminum alloy 5A06 sheets with filler[J]. Laser Technology, 2010, 34(1):34-36.
[15] 肖荣诗,左铁钏,AMBROSY G,等. 采用填充焊丝的外加电流铝合金CO2激光焊接[J].焊接学报,2006,27(5):9-12. XIAO Rongshi, ZUO Tiechuan, AMBROSY G, et al. Aluminum alloy CO2 laser welding by using filler wire impressed current[J].Transactions of the China Welding Institution, 2006, 27(5):9-12.
[16] 梅汉华,肖荣诗,左铁钏.采用填充焊丝激光焊接工艺的研究[J].北京工业大学学报, 1996,22(3):38-42. MEI Hanhua, XIAO Rongshi, ZUO Tiechuan. The research on laser welding with filler wire[J]. Journal of Beijing Institute of Technology, 1996, 22(3):38-42.
[17] 王成,张旭东,陈武柱,等.填丝CO2激光焊的焊缝成形研究[J].应用激光, 1999,19(5):269-271. WANG Cheng, ZHANG Xudong, CHEN Wuzhu, et al. The research on formation of weld in CO2 laser welding with filler wire[J].The Applied Laser, 1999, 19(5):269-271.
[18] KLOBCAR D, KOSEC L, KOSEC B, et al. Thermo fatigue cracking of die casting dies[J]. Engineering Failure Analysis, 2012, 20:43-53.
[19] SKUMAVC A, TUSEK J, NAGODE A, et al. Tungsten heavy alloy as a filler metal for repair welding of dies for high pressure die casting[J]. International Journal of Materials Research, 2013, 104(11):1143-1150.
[20] 刘红兵,陶汪,陈洁,等.激光填丝焊焊丝熔入行为特征[J].焊接学报,2013,34(11):73-77. LIU Hongbing, TAO Wang, CHEN Jie, et al. The characteristics on the behavior of welding wire melting in the Laser welding with filler wire[J].Transactions of the China Welding Institution, 2013, 34(11):73-77.
[21] 蔡华,华凯莉,肖荣诗.薄板2524铝合金激光填丝焊接工艺及组织性能[J].焊接学报,2014,35(4):24-28. CAI Hua, HUA Kaili, XIAO Rongshi. The microstructures and properties of 2524 aluminum alloy sheet processed by laser welding with filler wire[J].Transactions of the China Welding Institution, 2014, 35(4):24-28.
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