Vehicle torsion shaft surface remanufacturing technology

The invention relates to a vehicle torsion shaft surface remanufacturing technology, and a torsion shaft is an important elastic element of a vehicle, has a severe working environment, needs to bear a large amount of disturbance load, is easy to cause surface damage and fault after being used for a period of time, and needs to be maintained or replaced regularly. In view of sustainable development of resources and environments, the vehicle torsion shaft surface remanufacturing technology is designed. The process comprises the eight steps of surface cleaning, damage detection, residual value evaluation, damage cutting, laser cladding remanufacturing, remanufacturing post-treatment, surface powerful rolling, strong twisting prestress treatment and repair quality detection. Therefore, the recovered torsion shaft of the vehicle can be repaired to be close to the performance of an original finished product, so that the torsion shaft can be reused. In the repair quality detection, whether the torsion shaft is reman