雨刮器压铸模具激光填丝焊修复性能

doi:10.6040/j.issn.1672-3961.0.2014.225

山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 73-79.doi: 10.6040/j.issn.1672-3961.0.2014.225

雨刮器压铸模具激光填丝焊修复性能

刘立君¹, 张红兴^1,2, 张伟杰^1,2, 王刚^1,3, 齐萌^1,2

1. 浙江大学宁波理工学院, 浙江宁波 315100;
2. 太原科技大学机械工程学院, 山西太原 030024;
3. 哈尔滨理工大学材料科学与工程学院, 黑龙江哈尔滨 150080

收稿日期:2014-08-21 修回日期:2015-03-18 发布日期:2014-08-21
通讯作者: 张红兴(1989- ),男,山东济宁人,硕士研究生,主要研究方向为激光模具强化及修复再造技术. E-mail:zhanghx0531@163.com E-mail:zhanghx0531@163.com
作者简介:刘立君(1968- ),男,黑龙江哈尔滨人,教授,硕导,主要研究方向为激光模具强化及修复再造技术. E-mail:888liulijun@163.com
基金资助:
浙江省零件轧制成形技术研究重点实验室开放基金资助项目(ZKL-PR-200303);宁波市自然基金资助项目(2014A610078);国家自然科学基金资助项目(51275468)

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

LIU Lijun¹, ZHANG Hongxing^1,2, ZHANG Weijie^1,2, WANG Gang^1,3, QI Meng^1,2

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

摘要/Abstract

摘要： 为了解决模具表面龟裂问题,采用激光技术和仿生技术相结合的方法进行修复。利用激光填丝焊修复的方法,在模具试样表面制备修复层,对修复层进行组织观察、硬度分析及X射线能谱分析,得出激光填丝焊修复的最优工艺参数为电流180 A,离焦量-10 mm,激光脉宽8 ms,填丝速度0.032 m/min,并对修复的模具进行热疲劳试验和寿命测试。试验结果表明,利用激光填丝焊修复受损模具,提高模具表面硬度,有效细化组织晶粒,延长模具使用寿命,为压铸模具修复提供一种新的思想。

关键词: 压铸模具, 激光技术, 激光焊接, 填丝焊, 热疲劳, 组织特征

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

中图分类号:

TG174

刘立君, 张红兴, 张伟杰, 王刚, 齐萌. 雨刮器压铸模具激光填丝焊修复性能[J]. 山东大学学报(工学版), 2015, 45(3): 73-79.

LIU Lijun, ZHANG Hongxing, ZHANG Weijie, WANG Gang, QI Meng. The property of die-casting dies of wiper repaired by laser welding with filler wire[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(3): 73-79.

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雨刮器压铸模具激光填丝焊修复性能

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

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