Effect of reserved groove gap on backing welding of high-strength steel thick plates

被引：0

作者：

Yang, Dongqing ^{[1
]}

Li, Dayong ^{[1
]}

Zhang, Guangjun ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin,150001, China

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2015年 / 36卷 / 11期

关键词：

Alloy steel - High strength steel - High strength alloys - Finite element method - Welding;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The finite element simulation of the backing welding of the high strength steel plates was built by using MSC. Marc and the effects of the reserved groove gap on backing weld root fusion was investigated based on the welding temperature field. And the results of simulation were verified and supplemented by the experiments. The results showed that, under the low alloy high strength steel required welding heat input, when groove gap size was less than 2 mm, the backing weld root appears incomplete fusion defects. When the gap increases to 2-4 mm, the backing weld has single face welding-double face forming. When the gap increased to more than 5 mm, the heat resource could not reach to the base metal of the groove sidewall and the weld root appeard incomplete fusion, and was necessary to use swing welding with high heat input for good fusion. © 2015, Harbin Research Institute of Welding. All right reserved.

引用

页码：57 / 60