金属加工（热加工）Issue(10)：61-66,72,7.
Q235B碳素结构钢单双丝埋弧焊焊接接头性能研究
Research on the performance of single and double wire submerged arc welding joints of Q235B carbon structural steel
李园园 1娄安东2
作者信息
- 1. 中信重工机械股份有限公司 河南洛阳 471039
- 2. 中信重工机械股份有限公司 河南洛阳 471039||郑州大学机械与动力工程学院 河南郑州 450001
- 折叠
摘要
Abstract
Double wire submerged arc welding,as an efficient welding method,has been widely used in enterprises.In order to further understand the differences between double wire submerged arc welding and single wire submerged arc welding,it is necessary to conduct research on the microstructure and properties of single and double wire submerged arc welding joint.A welding process evaluation test was conducted for single wire and double wire submerged arc welding of Q235B carbon structural steel with flat butt X-groove.Mechanical properties tests such as tensile,bending,and impact were carried out on the welded joints,and microscopic metallographic observation and hardness testing methods were used to analyze the microstructure,grain size,and hardness of the joints.The results show that the tensile,bending,and impact testing results of Q235B carbon structural steel single and double wire submerged arc welding joint meet the relevant standard requirements,and the mechanical properties are good;double wire submerged arc welding has slightly higher strength and hardness than single wire submerged arc welding,but slightly lower impact absorption energy;compared to single wire submerged arc welding,double wire submerged arc welding has coarser grains in the heat affected zone between the base metal and the weld seam,and a more pronounced cellular dendritic structure in the weld seam area.关键词
双丝埋弧焊/焊接接头/力学性能/微观组织Key words
double wire submerged arc welding/welding joints/mechanical properties/microstructure引用本文复制引用
李园园,娄安东..Q235B碳素结构钢单双丝埋弧焊焊接接头性能研究[J].金属加工（热加工）,2025,(10):61-66,72,7.
