磁场控制横向MAG焊接焊缝成型工艺的研究

横向焊接时由于熔化金属重力的作用,会引起熔池金属下淌,从而产生咬边以及焊瘤等焊接缺陷。为了解决上述问题,提出了通过外加磁场控制横向焊接焊缝成型的焊接新工艺,阐明了横向焊接磁场控制焊缝成型的原理。通过实验证明该控制方法的有效性和实用性。试验结果表明,当短路过渡焊接在192A时,未出现咬边和焊瘤等缺陷。从而使横向焊接的效率得到显著的提高。多道多层焊接时,可以明显减少焊接层数,缩短焊接时间。实现了横向焊接磁场控制焊缝成型的高效率MAG焊接新工艺。

Study on the Electromagnetically Controlled Horizontal Position MAG Welding Process

In horizontal position welding, the gravity makes molten metal flow downward and sometimes causes weld defects such as undercut and overlap. To solve this problem the authors propose a new welding process called electromagnetically controlled horizontal welding process and discuss its theory. The result shows that this process is practicable and realizes the aim of controlling weld bead shaping. During the short-circuit transition welding when the welding current is 192 A, there is no defect such as undercut and overlap. Therefore the welding efficiency is increased obviously, and the welding cycle is shortened during the multilayer welding.