The invention belongs to the technical field of
welding equipment, particularly relates to automatic
flame linear
welding equipment for
pipe fitting
processing, and aims to solve the problems that when existing
flame welding equipment is used for linearly welding a
pipe fitting, a welding spot needs to be preheated in advance, the thicker the
pipe fitting is, the longer the preheating time and the number of times are, and the working efficiency is greatly reduced. A guide rail base is fixedly connected to the upper side of the
workbench, two
rollback clamping assemblies are arranged on the guide rail base at equal intervals, and a guide rail frame is fixedly connected to the upper side of the
workbench. According to the automatic
flame linear welding equipment for
pipe fitting machining, flame jet preheating is only conducted on the first welding spot, and then preheating and heat preservation can be conducted on the front portion and the rear portion of the welding spot through the stress-preventing auxiliary welding
assembly by means of heat generated by the flame welding device. Compared with a traditional mode that welding needs to be repeatedly interrupted for preheating, the method has the advantages that the efficiency is greatly improved, the welding seam is prevented from being suddenly dropped and fractured when encountering cold through the heat preservation effect, and the welding quality is guaranteed.