超高频脉冲GTAW工艺特性分析

doi:10.3901/JME.2016.02.026

机械工程学报 ›› 2016, Vol. 52 ›› Issue (2): 26-32.doi: 10.3901/JME.2016.02.026

• 高速高效熔化焊接工艺专栏 • 上一篇下一篇

超高频脉冲GTAW工艺特性分析

齐铂金, 杨舟, 杨明轩, 从保强

北京航空航天大学机械工程及自动化学院北京 100191

收稿日期:2015-04-20 修回日期:2015-08-14 出版日期:2016-01-15 发布日期:2016-01-15
作者简介:齐铂金，男，1963年出生，博士，教授，博士研究生导师。主要研究方向为高频脉冲焊接电源及控制。 E-mail：qbj@buaa.edu.cn
基金资助:
国家自然科学基金(51405007)和航空科学基金(2011ZE51061)资助项目

Analysis on Characteristic of Ultra High Frequency Pulsed Gas Tungsten Arc Welding Process

QI Bojin, YANG Zhou, YANG Mingxuan, CONG Baoqiang

School of Mechanical Engineering & Automation, Beihang University, Beijing 100191

Received:2015-04-20 Revised:2015-08-14 Online:2016-01-15 Published:2016-01-15

摘要/Abstract

摘要： 基于5 mm厚的Ti-6Al-4V钛合金平板，分别采用常规钨极氩弧焊(Conventional gas tungsten arc welding, C-GTAW)和超高频脉冲钨极氩弧焊(Ultra high frequency pulsed GTAW, UHFP-GTAW)工艺，选用相同平均电流(60 A)进行焊接，同时利用FLUKE Ti400红外热像仪对熔池中心温度进行实时监测，分别对电弧定点燃烧时、以50 mm/min焊速移动时采集的熔池中心温度进行分析。由测量结果可知，与相同条件下C-GTAW相比，UHFP-GTAW作用下的熔池中心温度最大值增加了10～40 K，表明该工艺具有更高的能量密度。分析1.5 mm钛合金对接工艺试验的组织性能测试结果发现，焊缝区细小均匀的针状α'马氏体形成的网篮组织含量增加，热影响区组织α'相呈现短且小的针状且排列更为致密，可改善接头的拉伸力学性能、疲劳性能。UHFP-GTAW焊缝的伸长率最小增幅为30%，断面收缩率最小增幅为50%，疲劳寿命至少增加2倍。

关键词: Ti-6Al-4V钛合金, 超高频脉冲GTAW, 红外测温, 组织性能

Abstract: Bead-on-plate welding test are carried on 5 mm thickness Ti-6Al-4V titanium alloy plates by the processes both of conventional gas tungsten arc welding (C-GTAW) and the ultra high frequency pulsed GTAW (UHFP-GTAW) in the same average welding current (60 A). The temperature of molten pool center is monitored in real time with thermal infrared imager Fluke Ti400. These measurements before the arc moving and moving at a speed of 50 mm/min are analyzed respectively. The results show that compared with the C-GTAW in same condition, the maximum of the temperature of weld pool center are 10-40 K enhanced by UHFP-GTAW for higher density power with different pulse frequencies. The microstructure and mechanical properties tests are conducted on 1.5 mm thickness Ti-6Al-4V butt joints, verified that the UHFP-GTAW had influences in improving tensile and fatigue properties because of a larger density of basketweave formed by the short and uniform acicular α' martensite in fusion zone and a more compact arrangement of α' in heat affected zone. The elongation and percentage reduction of area respectively are increased by 30% and 50% at least, and the fatigue life triples at least.

Key words: infrared temperature measurement, microstructure and properties, Ti-6Al-4V titanium alloy, ultra high frequency pulsed GTAW

中图分类号:

TG402
TG457

齐铂金, 杨舟, 杨明轩, 从保强. 超高频脉冲GTAW工艺特性分析[J]. 机械工程学报, 2016, 52(2): 26-32.

QI Bojin, YANG Zhou, YANG Mingxuan, CONG Baoqiang. Analysis on Characteristic of Ultra High Frequency Pulsed Gas Tungsten Arc Welding Process[J]. Journal of Mechanical Engineering, 2016, 52(2): 26-32.

参考文献

[1] SHORT A B. Gas tungsten arc welding of α+β titanium alloys：A review [J]. Materials Science and Technology，2009，25(3)：309-324.
[2] BAESLACK III W A，BANAS C M. A comparative evaluation of laser and gas tungsten arc weldments in high temperature titanium alloys[J]. Welding Journal，1981，60：121-130.
[3] BABU N K，RAMAN S G S. Influence of current pulsing on microstructure and mechanical properties of Ti-6Al-4V TIG weldments[J]. Science and Technology of Welding and Joining，2006，11(4)：442-447.
[4] QI Yunlian，DENG Ju，HONG Quan，et al. Electron beam welding，laser beam welding and gas tungsten arc welding of titanium sheet[J]. Material Science Engineering A，2000(280)：177-181.
[5] 罗键，贾昌申，王雅生，等. 外加纵向磁场GTAW焊接熔池流动机理[J]. 机械工程学报，2001，37(4)：29-32. LUO Jian，JIA Changshen，WANG Yasheng，et al. Fluid flow of LD10CS aluminum alloy weld pools in GTAW with longitudinal magnetic field controlling[J]. Chinese Journal of Mechanical Engineering，2001，37(4)：29-32.
[6] KISHORE B N，GANESH S R S，MYTHILI R，et al. Correlation of microstructure with mechanical properties of TIG weldments of Ti-6Al-4V made with and without current pulsing[J]. Materials Characterization，2007，58(7)：581-587.
[7] 杨明轩，齐铂金，从保强，等. 脉冲电流参数对奥氏体不锈钢电弧行为的影响[J]. 焊接学报，2012，33(10)：67-70. YANG Mingxuan，QI Bojin，CONG Baoqiang，et al. The influence of pulse current parameters on arc behavior by austenite stainless steel[J]. Transactions of the China Welding Institution，2012，33(10)：67-70.
[8] YANG Zhou，QI Bojin，CONG Baoqiang，et al. Microstructure，tensile properties of Ti-6Al-4V by ultra high pulse frequency GTAW with low duty cycle[J]. Journal of Materials Processing Technology，2015，216：37-47.
[9] 陈强，孙振国. 焊接信息视觉传感[C]//中国机械工程学会. 第十次全国焊接(焊接与IT专题)学术会议集. 天津：中国机械工程学会，2001：3-14. CHEN Qiang，SUN Zhenguo. Vision sensing of welding information[C]//Chinese Mechanical Engineering Society. Welding and IT Special Subject Proceedings：The Tenth National Welding Conference. Tianjin：CMES，2001：3-14.
[10] SCHNICK M，DREHER M，ZSCHETZSCHE J. Visualization and optimization of shielding gas flows in arc welding[J]. Welding in the World，2012，56：54-61.
[11] 石永华，钟继光，刘桑，等. 视觉传感及图像处理技术在焊接中的应用[J]. 电焊机，1999，29(9)：1-4. SHI Yonghua，ZHONG Jiguang，LIU Sang，et al. Application of vision sensing and image processing technology in welding engineering[J]. Electric Welding Machine，1999，29(9)：1-4.
[12] 张华，潘际銮，廖宝剑. 图像比色法温度场实时检测的研究[J]. 机械工程学报，1998，34(2)：1-7. ZHANG Hua，PAN Jiluan，LIAO Baojian. Study on real-time measurement for temperature field by images colorimetric method[J]. Chinese Journal of Mechanical Engineering，1998，34(2)：1-7.
[13] FARSON D，RICHARDSON R，LI X. Infrared measurement of base metal temperature in gas tungsten arc welding[J]. Welding Journal，1998，77(9)：396-401.
[14] CHIN B A，MADSEN N H，GOODLINC J S. Infrared thermography for sensing the arc welding process[J]. Welding Journal，1983，62(9)：227-234.
[15] WANG Xuedong，SHI Qingyu，WANG Xin，et al. The influences of precrack orientations in welded joint of Ti-6Al-4V on fatigue crack growth[J]. Materials Science and Engineering A，2010，527：1008-1015.

超高频脉冲GTAW工艺特性分析

Analysis on Characteristic of Ultra High Frequency Pulsed Gas Tungsten Arc Welding Process

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 8

编辑推荐

Metrics

本文评价

[1]	朱国明, 康永林, 朱帅. 汽车用超高强QP钢的工艺与组织性能研究[J]. 机械工程学报, 2017, 53(12): 110-117.
[2]	徐海洁, 马立峰, 刘崇林, 刘光明, 黄志权, 刘鹏涛, 林金宝. AZ31B镁合金板材多道次轧制路径研究[J]. 机械工程学报, 2017, 53(10): 43-51.
[3]	尹燕;王占冲;张瑞华;他进国;刘钊. 活性激光电弧复合焊接法研究[J]. , 2014, 50(22): 63-68.
[4]	赵耀邦;雷正龙;李俐群;陈彦宾. 铝合金激光-电弧双面焊接激光稳定、压缩电弧的机制分析[J]. , 2013, 49(4): 51-57.
[5]	杜泓飞;曾攀;雷丽萍;赵加清;许月杰;何文斌. 研究NiTi合金相变局部化现象的宏观原位多场测试方法及分析[J]. , 2013, 49(24): 15-23.
[6]	国为民;赵明汉;董建新;曾强;张龙飞;燕平. FGH95镍基粉末高温合金的研究和展望[J]. , 2013, 49(18): 38-45.
[7]	吕方明;王坤;黄树红;吴波;高峰. 超临界水蒸气氧化的12Cr钢发射率试验研究[J]. , 2012, 48(18): 124-129.
[8]	陈达;水晓平;李鹏兴. 大件热处理的温度场、显微组织及性能预测[J]. , 1990, 26(6): 8-13.