Manual electric arc welding prime coat is arc extinguishing method and the application in Q460 high-strength steel docking plate welding thereof in a zigzag

The invention discloses arc extinguishing method and the application thereof in a zigzag of manual electric arc welding prime coat, in first time arc leading and suppressing process, arcing point is positioned at groove root near root face 2-3mm place, manipulation of electrode is that oblique rear along groove face to molten bath after striking is to being gently with electric arc, pause teeter is to groove opposite side slightly, observe the fusion of this side slope mouth good after, to the oblique rear of arcing point to arc extinguishing, welding rod termination running orbit is just as "the" shape; Whole piece prime coat weld seam all welds by which.Profit carries out the dull and stereotyped weldering of Q460 steel docking in this way afterwards, carry out filling weldering and superficial layer weldering, molten bath can be observed better in welding process, reduce prime coat weld defect, guarantee for banjo fixing butt jointing prime coat welding quality provides the support of operating technology aspect, and this arc-suppressing method effectively can control the shaping of the root of weld and can obtain excellent seam organization.