金属加工（热加工）Issue(9)：36-40,5.
不同焊接参数对Q355B钢焊接接头力学性能的影响
The influence of different welding parameters on the mechanical properties of Q355B steel welded joints
摘要
Abstract
For the commonly used steel Q355B of construction machinery,through the arc welding robot MAG welding,the welding current is controlled at 280 to 400A,and process test research under different welding parameters is performed.The test results show that as the current increases its welding joint performance,there is no significant attenuation.The tensile strength,yield strength,elongation after fracture,bending performance,impact performance,and hardness performance of welded joint specimens all meet the standard requirements,and their performance can reach or exceed the level of the base metal.Welding joints have optimal performance when the current is controlled at 350A.At the same time,compared to when the welding current is small,as the welding increases to above 380A,the efficiency can be improved by about 20%,which is used to guide actual production needs.关键词
Q355B钢/MAG/焊接电流/接头性能/效率Key words
Q355B steel/MAG/welding current/performance of welding joints/efficiency引用本文复制引用
赵小康,张海燕,李慧琼,李世霞,冶维财,屈海东..不同焊接参数对Q355B钢焊接接头力学性能的影响[J].金属加工（热加工）,2024,(9):36-40,5.基金项目
甘肃省创新基金项目(2023B-488). （2023B-488）
