Intelligent penetration welding of thin-plate gtaw process based on arc voltage feedback

被引：0

作者：

Cheng Y. ^{[1
]}

Xiao J. ^{[1
]}

Chen S. ^{[1
]}

Zhang Y. ^{[2
]}

机构：

[1] Welding Research Institute and Engineering Research Center of Advanced Manufacturing Technology for Automotive Components-Ministry of Education, Beijing University of Technology, Beijing

[2] Department of Electrical and Computer Engineering and Institute for Sustainable Manufacturing, University of Kentucky, Lexington

来源：

Chen, Shujun (sjchen@bjut.edu.cn) | 2018年 / Harbin Research Institute of Welding卷 / 39期

关键词：

Algorithm; Bead-on-plate welding; GTAW; Intelligence-penetration; Signal processing;

D O I：

10.12073/j.hjxb.2018390287

中图分类号：

学科分类号：

摘要：

Welding penetration control is crucial for weld quality control in GTAW of thin plates. Sensing of weld depth and recognition of full penetration is the key challenge in welding penetration control. Conventional direct vision sensing of full penetration at the back side of weld beam can effectively extract the penetration information, but often cannot be used due to the limited space accessibility. Therefore, in this paper, welding penetration control based on arc voltage sensing was studied. By extracting the penetration features during arc voltage sensing as a feedback, the welding current waveform could be modulated to adjust the welding depth in real time and thus to ensure uniform weld full penetration without burning through. The bead-on-plate welding experiments were conducted using 4 mm thick hot rolled steel plates and 3 mm thick cold rolled steel plates. Control principle was verified by enforcing the bead-on-plate welding experiments under different welding currents. Sound welding seams was acquired in variational cooling condition and variational clearance bead-on-plate welding experiments. Test results show peak voltage time can be controlled according to the intelligence feedback of arc voltage. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：1 / 4and43

页数：442

共 8 条

[1] Li X.R., Shao Z., Zhang Y.M., Et al., Monitoring and control of penetration in GTAW and pipe welding, Welding Journal, 92, pp. 190-196, (2013)
[2] Yin S., Wang Q., He J., Et al., A study of the arc stability in low-current and high-pulsed TIG welding, Metal Science & Technology, 6, 4, pp. 97-106, (1987)
[3] Wu L., Dong D., Cheng D., Detection and analysis of welding penetration signal in stationary TIG arc welding-an preliminary study of detection of welding penetration, Transactions of the China Welding Institution, 7, 2, pp. 20-28, (1986)
[4] Wang Q., Zhang J., Yang C., Detection of weld pull penetration signals of a travelling arc in GTAW process, Transactions of the China Welding Institution, 11, 3, pp. 49-54, (1990)
[5] Yang C., Zhang J., Wang Q., Self-adaptive control of complete joint penetration of thin-plate TIG welding by weld pool pesonance, Metal Science & Technology, 10, 3, pp. 95-100, (1991)
[6] Zhang Y.M., Li X.R., Shao Z., Et al., Method to monition and control weld penetration in gas tungsten welding and full-position pipe welding
[7] Li X., Zhang Y., Predictive control for manual plasma arc pipe welding, Journal of Manufacturing Science and Engineering, 136, 4, pp. 041017-1-041017-8, (2014)
[8] Zhang K., Zhang Y.M., Chen J.S., Et al., Observation and analysis of three-dimensional weld pool oscillation dynamic behaviors, Welding Journal, 96, pp. 143-153, (2017)

← 1 →