| 环境压力对熔化极气体保护焊焊接过程及焊缝成形的影响 |
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| 引用本文： | 吴金明,薛龙,黄继强,刘剑,李兰,徐雷.环境压力对熔化极气体保护焊焊接过程及焊缝成形的影响[J].上海交通大学学报,2015,49(3):315-318. |
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| 作者姓名： | 吴金明 薛龙 黄继强 刘剑 李兰 徐雷 |
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| 作者单位： | (1． 北京石油化工学院 光机电装备技术北京市重点实验室, 北京 102617；2． 北京化工大学 机电工程学院, 北京 100029； 3． 北京工业大学 机电工程学院， 北京 100124) |
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| 基金项目： | 国家自然科学基金项目（51275051），北京市科委装备制造领域关键技术研究及成果转化培育项目（Z121100007812003）资助 |
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| 摘 要： | 摘要： 在环境压力0.1～1.0 MPa条件下，通过高速摄像和汉诺威分析仪等手段，研究了高压干法熔化极气体保护焊过程及焊缝成形的特点，分析了焊接飞溅和焊缝成形的主要成因.试验表明，随着环境压力的增加，焊接过程逐渐变得不稳定，飞溅增加，焊缝逐渐变窄，焊缝成形变差.
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| 关 键 词： | 高压焊接 熔化极气体保护焊 焊缝成形 飞溅 |
| 收稿时间： | 2014-05-15 |
Influence of Environmental Pressure on GMAW Process and The Weld Bead Appearance |
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| WU Jin ming,XUE Long,HUANG Ji qiang,LIU jian,LI Lan,XU Lei.Influence of Environmental Pressure on GMAW Process and The Weld Bead Appearance[J].Journal of Shanghai Jiaotong University,2015,49(3):315-318. |
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| Authors: | WU Jin ming XUE Long HUANG Ji qiang LIU jian LI Lan XU Lei |
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| Institution: | (1. Beijing Major Laboratory of Opto Mechatronic Equipment Technology, Beijing Institute of Petro-Chemical Technology, Beijing 102617, China；2. School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China； 3. School of Mechanical and Electrical Engineering, Beijing University of Technology, Beijing 100124， China) |
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| Abstract: | Abstract： Underwater hyperbaric dry gas metal arc welding (GMAW) welding technology is one of the key technologies for the maintenance of underwater equipment, such as shipping, ocean platform, seabed pipeline. To get high quality and high efficiency underwater welding technology parameters, the effect of hyperbaric ambient on GMAW is of important practical significance. The characteristics of the weld appearance and the GMAW process were studied at ambient pressure from 0.1 MPa to 1.0 MPa by using a high speed camera and a Hannover analyser. The causes of weld spatter and the characteristics of weld appearance were analyzed. The experiment shows that as the number of the spatters increase, the weld joint becomes narrower and worsens gradually as the ambient pressure increases.
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| Keywords: | hyperbaric welding gas metal arc welding (GMAW) weld appearance spatter |
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