Required equipment
One set of manual electric welding equipment, one handle-type angle grinder, one electric hammer, and one flat ruler.
Preparation before welding
1. Check the debugging equipment to ensure the normal operation of the equipment; 2. Prepare φ4.0J402 electrode for best drying at 300 ℃ -350 ℃ for one hour.
Welding process
1. Assembly Assemble the vertebral body and the large flange together according to the requirements of the drawing, and then divide the large flange into 8 equal parts. 2. Due to the thicker flange and larger bevel, segmented symmetrical and multi-layer welding is used.
Weld quality
It is required that the strength of the weld be at least that of the base metal. The weld surface is smooth and free of defects such as burn-through, blow holes, welding leaks, slag inclusions, undercuts, and under-welding. The remaining height is less than 2mm.
Precautions
1. Be sure to use J506 electrode for manual surfacing when priming, and use low current welding. Weld in strict accordance with the welding process. 2. After each welding position, use the spirit level to check the deformation of the flange plane. 3. While welding, hammer the seam with an air hammer to eliminate stress.