旋转电弧窄间隙横向GMAW接头冲击韧性研究

J4 ›› 2010, Vol. 23 ›› Issue (6): 52-56.

旋转电弧窄间隙横向GMAW接头冲击韧性研究

罗非, 郭宁, 贾传宝, 薛良昌, 程双球, 张琳琳

山东省海洋环境监测技术重点实验室，山东省科学院海洋仪器仪表研究所，山东青岛 266001

收稿日期:2010-08-31 出版日期:2010-12-20 发布日期:2010-12-20
基金资助:
国家自然科学基金资助项目（51005141）

Impact Ductility of Rotating Arc Narrow Gap Horizontal GMAW Joint

LUO Fei, GUO Ning, JIA Chuan-Bao, XUE Liang-Chang, CHENG Shuang-Qiu, ZHANG Lin-Lin

Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, Qingdao 266001, China

Received:2010-08-31 Online:2010-12-20 Published:2010-12-20

摘要/Abstract

摘要：

开发了一种新型旋转电弧窄间隙横向焊接技术，前期的研究结果表明该技术可以有效地控制横向焊接的熔池行为，消除横向焊接焊缝下塌缺陷的产生。本文在前期研究的基础上对12Ni3CrMoV高强度高韧性钢新型旋转电弧窄间隙横向GMAW接头冲击韧性进行了研究。0℃试验温度下母材的平均冲击功是236 J，热影响区和焊缝金属的平均冲击功分别是212.2 J和115.4 J。与母材相比，热影响区的韧性没有显著降低，其平均冲击功仅比母材下降了10.2%，这说明旋转电弧窄间隙MAG横向焊接条件下的焊接热循环对母材的损伤很小。

关键词: 冲击韧性, 横向焊接, 旋转电弧

Abstract:

We developed a novel rotating arc horizontal wielding technology. Previous results indicated that this technology could effectively control the molten pool behavior of horizontal wielding, and eliminate the negative of wielding slit sinking. This paper further investigates the impact ductility of the novel rotating arc narrow gap horizontal GMAW joint of the 12Ni3CrMoV steel.Results demonstrate that the average impact energy of the base material, heat affected zone (HAZ) and wield zone is 236 J, 212.2 J and 115.4 J when temperature is 0℃. The impact ductility of HAZ only approximately decreases 10.2%, as compared with that of the base material. This shows that the thermal cycle of rotating arc narrow gap horizontal GMAW does not significantly deteriorate the ductility of the base material.

Key words: impact ductility, horizontal wielding, rotating arc

中图分类号:

TG444+.3

罗非, 郭宁, 贾传宝, 薛良昌, 程双球, 张琳琳. 旋转电弧窄间隙横向GMAW接头冲击韧性研究[J]. J4, 2010, 23(6): 52-56.

LUO Fei, GUO Ning, JIA Chuan-Bao, XUE Liang-Chang, CHENG Shuang-Qiu, ZHANG Lin-Lin. Impact Ductility of Rotating Arc Narrow Gap Horizontal GMAW Joint[J]. J4, 2010, 23(6): 52-56.