The invention relates to the technical field of
hybrid welding, in particular to a
laser and TIG magnetic control
hybrid welding process for a
nickel-based
alloy pipe production line, which comprises the following steps:
pipe manufacturing, preparation, conveying and preheating,
welding and cooling, equipment comprises a dust-free welding chamber and a welding
pipe, a welding mechanism is arranged in the dust-free welding chamber, and the welding pipe is arranged in the dust-free welding chamber. The welding mechanism comprises a high-frequency pulse TIG welding gun and a
laser transmitter, a
magnetic field mechanism is arranged in the high-frequency pulse TIG welding gun, and a
tungsten electrode end is arranged at the end, away from the adjusting frame, of the high-frequency pulse TIG welding gun. The method has the advantages that
optical fiber laser welding is combined with the high-frequency pulse TIG arc and external alternating
magnetic field technology, the welding speed is remarkably increased, rapid heating is achieved through
optical fiber laser welding, the stirring and mixing effects of a
molten pool are enhanced through adding of the high-frequency pulse TIG arc and the alternating
magnetic field, the alternating magnetic field stirs the interior of the
molten pool, grains are refined, and the overall performance of a welding seam is improved; therefore, thermal stress and deformation of
weld metal are reduced, and welding efficiency and quality are improved.