徐望辉,杨清福,肖逸峰.窄间隙焊接侧壁熔合控制技术的研究现状[J].精密成形工程,2020,12(4):47-54.
XU Wang-hui,YANG Qing-fu,XIAO Yi-feng.Research Status of Sidewall Fusion Control Technology in Narrow Gap Welding[J].Journal of Netshape Forming Engineering,2020,12(4):47-54. |
| 窄间隙焊接侧壁熔合控制技术的研究现状 |
| Research Status of Sidewall Fusion Control Technology in Narrow Gap Welding |
| 投稿时间：2020-05-13 修订日期：2020-07-10 |
| DOI：10.3969/j.issn.1674-6457.2020.04.005 |
| 中文关键词: 窄间隙焊接 侧壁熔合 研究现状 |
| 英文关键词: narrow gap welding sidewall fusion research status |
| 基金项目:广东省科学院项目（2017GDASCX-0119，2020C: DASYL-20200302013）；广州市对外科技合作项目（201807010035）；广东省科技项目（2017A070701026）；山东省重点研发计划（GG201703210025） |
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| 中文摘要: |
| 窄间隙焊接因采用窄且深的U型或者I型坡口，在焊接厚板时具有焊接效率高、焊接填充量少及焊接变形少等诸多优势，在大型厚壁高强钢结构制造领域具有很好的应用前景。由于窄间隙焊接中电弧与坡口侧壁几乎平行，造成电弧无法对侧壁直接加热，易出现侧壁未熔合缺陷，严重影响了大型高强钢结构的服役安全。通过对窄间隙焊接技术研究现状的分析整理，综述并比较常用的侧壁熔合控制技术与方案，分析了其优缺点。分析结果表明，目前已经开发了旋转电弧、双电弧、带状电极、复合热源及摆动电弧等多种侧壁熔合控制技术，在一定程度上解决了侧壁未熔合问题，并且在压力容器、厚壁管道等领域获得了应用。最后对该方向的研究进展进行了总结，并对其发展方向进行了展望。 |
| 英文摘要: |
| With the narrow and deep U-shaped or I-shaped groove, narrow gap welding has many advantages, such as high welding efficiency, less welding filling and less welding deformation in welding thick plates. It has a good application prospect in the manufacturing field of large thick wall high-strength steel structure. However, due to the fact that the arc is almost parallel to the groove side wall in narrow gap welding, the side wall cannot be heated directly by the arc, and it is prone to lack of fusion, which seriously affects the service safety of large-scale high-strength steel structures. In this paper, through the analysis on the research status of narrow gap welding technology, the common side wall fusion control technology and scheme were summarized and compared, and its advantages and disadvantages were analyzed. Several sidewall fusion control technologies have been developed, such as rotating arc, double arc, strip electrode, compound heat source and swing arc, which can solve the problem of lack sidewall fusion to a certain extent, and have been applied in pressure vessel, thick wall pipeline and other fields. Finally, the research progress of this direction was summarized, and its development direction was prospected. |
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