Brief introduction of stress annealing in Chengdu:

The heat treatment that the cold deformed metal is heated below the recrystallization temperature to remove the internal stress but still retains the effect of cold work hardening is called stress relief annealing.
      In practical production, the application of stress relief annealing process is much wider than the above definition. After hot forging, casting, various cold deformation processing, cutting or cutting, welding, heat treatment and even assembly of machine parts, the conditions of cold working, hot working or surface hardening are not changed In order to remove (all or part of) the internal stress and reduce the tendency of deformation and cracking, the process of heating steel or machine parts at a lower temperature is called stress relief annealing. Due to the difference of material composition, processing method, internal stress size and distribution, as well as the difference of removal degree, the range of stress relief annealing temperature is very wide.