Abstract: Discussed from a process perspective in the essay are the issues as affecting the bend quality, including the thermal simulation test, control of the bending temperature and the rebound and compensation of the bend, etc. It is regarded via the analysis that for the thermal simulation test of the bend, the conventional quenching and tempering process is not suitable;and the key is that during the bending simulation process, the holding time of the austenitizing temperature should not be too long, i.e., no longer than 5 minutes. Moreover, the relation expression between the heating power and the bend process parameters is deduced, i.e., in case of any fluctuation of the temperature during the bend-heating process, the power control must be taken as the basis so as to guarantee the performance of the whole batch of the products. Finally the causes for the bend rebound are discussed, and accordingly relevant corrective actions are proposed.