The invention belongs to the technical field of steel structure
welding, and discloses a back chipping-free and full penetration
robot welding technology of a medium plate (t>=30 mm) K-shaped groove.The
robot welding technology comprises the steps that plates are prepared, the plates are
cut so as to form a technology groove, splicing welding is conducted on the plates, a lead-in arc plate and alead-out arc plate are additionally installed, and full-length welding is conducted on an additionally installed rib plate.
Welding is conducted on the two medium plates by applying the
robot weldingtechnology, then the lead-in arc plate and the lead-out arc plate are dismounted, and ultrasonic checking is conducted on a welding seam of a spliced plate. In the
welding process of the medium plates, it is ensured that the
quality level of the welding seam can reach the requirement of a full penetration welding I level,
welding deformation is small, back chipping treatment does not need to be conducted on a welding pass, welding materials are saved, the production cost is reduced, a large number of human resources can be saved by adopting robot
automation welding, the manual labor intensityis relieved, meanwhile, the production efficiency is high, and the construction requirements for being advanced in technology, and capable of saving energy and reducing consumption are met.