Flange welding process

Required equipment

　　 A set of manual electric welding equipment, a handle angle grinder, an electric hammer, and a plane ruler.

　　Flange welding preparation

  1. Check and debug the equipment to ensure the normal operation of the equipment; 2. Prepare φ 4.0J402 welding rod is best dried at 300℃-350℃ for one hour.

　　Flange welding process

　　 1. Assembly Assemble the cone and the large flange according to the drawing requirements, and then divide the large flange into 8 equal parts. 2. Welding Because the flange is thicker and the groove is larger, segmented symmetrical, multi-layer welding is adopted.

　　Flange weld quality

　　 requires the weld strength to be at least the base metal strength. The surface of the weld is smooth and smooth, without defects such as burn-through, porosity, weld leakage, slag inclusion, undercut, and insufficient weld. The remaining height is less than 2mm.