螺旋埋弧焊管预精焊生产线导电刷结构改进

在螺旋埋弧焊管预精焊焊接过程中，导电刷与钢管表面接触是否良好，直接影响钢管埋弧焊缝及管体表面质量。通过增强导电刷底板强度，增加导电刷数量，优化导电刷角度调节及固定结构等，解决了焊接过程中由于导电刷与钢管表面接触不良产生的焊缝缺陷及钢管表面电弧烧伤问题，提高了焊接质量，减少了导电刷更换频次及使用数量，节约了材耗，实现了改进的目的。

Improvement of Conductive Brush Structure in Submerged-arc Welded Helical Pipe Pre-finish Welding Line

In the welding process of submerged-arc welded helcial pipe pre-finish welding steel pipe, the contact state between the conductive brush and the steel pipe surface directly affects the quality of the submerged arc welding seam and the surface of the pipe body. By enhancing conductive brush bottom strength, increasing the number of conductive brush, and optimizing the structure of conductive brush angle adjustment and fixed structure, the welding process due to poor contact conductive brush and steel pipe surface of weld defect and steel pipe surface arc burns are solved, the welding quality is improved, the number of conductive brush replacement frequency and use are reduced, the material consumption is saved, and the purpose and effect of the improvement are achieved.