1. Dislocation: The reason may be that the welding parts are not aligned or inclined, the welding parts are overheated, and the discharge length is too long. The welding rigidity is not large enough. The main preventive measures are to improve the rigidity of the equipment, reduce the length of the extension and appropriately limit the upsetting. The allowable error of the dislocation is generally less than 0.1mm or 0.5mm thickness. at the same time
2. Cracks: The reason may be that high-carbon steel and low-carbon steel tend to be quenched, which can be preheated and prevented by heat and timely annealing measures.
3. No penetration: The reason may be that the top interface temperature is too low, the upsetting is too small, the forging pressure and speed are low, and the impermeability caused by too many metal inclusions. Yes, use proper butt welding process parameters.
4. White spots: The special defects on the welding seam show a radial gray shift on the section. This kind of defect is very thin and is not easy to grind in gold. It can be found in the electron microscope analysis that white is more sensitive to cold bending, but The effect of tensile strength is very small and can be eliminated by quick and comprehensive measures.
The welding machine can also be combined with other automation equipment to realize the full automation of the flash pe butt welding machine.
