Journal of South China University of Technology(Natural Science) >

2010 , Vol. 38 >Issue 5: 100 - 104

DOI: https://doi.org/10.3969/j.issn.1000-565X.2010.05.020

Mechanical Engineering

All-Position Automatic Welding Process for Tube Sheet of Heat Exchanger

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  • 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
王振民（1974-），男，博士，副教授，主要从事现代焊接电源研究．

Received date: 2009-07-03

  Revised date: 2009-08-06

  Online published: 2010-05-25

Supported by

国家自然科学基金资助项目（50805051）; 广东省科技计划项目（2008B010400041）; 中央高校基本科研业务费专项资金资助项目（2009ZM0188）

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Abstract

In this paper,the characteristics of the all-position automatic welding procsss for the titanium alloy tube sheet of heat exchanger were analyzed in detail,and some experiments were carried out by using a self-developed full-digital tube sheet welding system.Then,the effects of the main process parameters on the welding quality were explored,and optimal conditions for the welding were determined,that is,a peak current of 80～100A,a base current of 20～30A,a pulse current frequency of 5～10Hz,a duty ratio of 50%,a rotating speed of 3～4r/min and a pulse mode for the current rising and falling.Finally,the correctness of the optimal conditions was verified by the on-site welding of tube sheet of heat exchanger for a 1GW supercritical thermal-power generating unit.

Key words： heat exchanger; titanium alloy tube sheet; all-position automatic welding; welding process

Cite this article

Wang Zhen-min Zhang Dong Li Jin Huang Shi-sheng . All-Position Automatic Welding Process for Tube Sheet of Heat Exchanger[J]. Journal of South China University of Technology(Natural Science), 2010 , 38(5) : 100 -104 . DOI: 10.3969/j.issn.1000-565X.2010.05.020

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