The latter welding excellent in plate-like shaped groove k submerged are welding

The present invention discloses a welding excellent in the latter plate-like K-groove submerged arc welding process, asymmetrical groove forms K-groove, and the thickness d of port Xiaopo weldment thickness t satisfy the relationship: d = ( t + 12) /3.24,t≥30mm, the opening angle of 45 ~ 50 °, without leaving the root blunt edge, assembly gap is zero. Welding process is as follows: (1) a backing directly submerged arc welding, welding full opening Xiaopo; (2) upside down, internal grinding machine with a grinding wheel groove, large welding groove. The present invention is directed to submerged arc base, by controlling the gap and assembly to match the appropriate welding specifications, in addition to the conventional process complex carbon arc gouging gouging step, while maintaining the yield of the weld inspection, and by finding Xiaopo the relationship between the thickness of the weldment port thickness, without inverting alternately welded, the welded plate well controlled deformation.