电焊机2017，Vol.47Issue(7)：6-9,4.DOI:10.7512/j.issn.1001-2303.2017.07.02
线能量相同情况下焊接参数变化对堆焊焊缝成形和粗晶区组织的影响
Effect of welding parameters under a constant heat input on formation of overlay and coarse-grained heat-affected zone
汤剑 1陈冰泉 1施玉清 2厉雷钧3
作者信息
- 1. 武汉华夏理工学院机械电子工程学院,湖北武汉430223
- 2. 国家光电子信息产品质量监督检验中心,湖北武汉430223
- 3. 阿尔伯塔大学化学工程与材料工程系,加拿大埃德蒙顿AB T6G 2V4
- 折叠
摘要
Abstract
The effect of welding parameters for a constant heat input on formation of weld overlay and its coarse-grained heat-affected zone was investigated for submerged-arc overlay welding.The heat-input was fixed at 35 kJ/cm and the welding voltage was fixed at 37 V,while the welding current and velocity were varied for overlay on a 20 mm thick low-carbon steel plate.The results show for the constant heat-input,a decreasing both welding current and velocity produce a smaller weld penetration and a greater weld width.The grain size in the coarse-grained heat-affected zone,weld reinforcement,and the width of the heat-affected zone also have a decreasing trend as the welding current and velocity decrease firstly,and then increasing.It is therefore possible to adjust the current and velocity,under a constant heat-input,to achieve optimum overlay formation for both weld quality and efficiency.关键词
线能量/焊接参数/堆焊焊缝成形/粗晶区组织Key words
heat-input/welding parameter/overlay formation/coarse-grained heat-affected zone分类
矿业与冶金引用本文复制引用
汤剑,陈冰泉,施玉清,厉雷钧..线能量相同情况下焊接参数变化对堆焊焊缝成形和粗晶区组织的影响[J].电焊机,2017,47(7):6-9,4.
