直缝埋弧焊管焊缝单侧咬边和焊偏缺陷原因分析

为了解决薄壁直缝埋弧焊管在生产过程中存在的单侧咬边和焊偏缺陷较多的问题，对实际生产中单侧咬边和焊偏缺陷产生的原因进行了分析，发现通过对滚轮架位置进行相应的调整，便可消除焊缝单侧咬边和焊偏缺陷。因此得出:在焊接过程中，焊点偏移量较大是引起薄壁直缝埋弧焊管生产过程中出现单侧咬边和焊偏缺陷的根本原因，并就如何减少焊点偏移量、消除薄壁直缝埋弧焊管单侧咬边和焊偏提出了建议。

Cause Analysis on Single Side Undercut and Weld Misalignment Defects for Longitudinal Submerged Arc Welded(SAWL) Pipe

In order to solve single side undercut and weld misalignment defects problems during thin-wall SAWL pipe production process, through cause analysis for single side undercut and weld misalignment defects, it found the single side undercut and weld misalignment can be eliminated through adjusting turning roll frame position. Thus it is concluded that the larger welding spot offset is the main reason for single side undercut and misalignment of thin-wall SAWL pipe, and the proposal of how to reduce the welding spot offset and eliminate single side undercut and misalignment was put forward.