Most of the heat-resistant steel parts need to work at high temperatures, so they have enough ability to withstand high temperature oxidation, corrosion and wear, or if the quality of the workpiece material deviation, these certainly can not be done. So when the production not only of high quality materials, but also for heat treatment after forming the workpiece.

Heat-resistant steel castings heat treatment process is divided into a plurality of steps, which are cleaned, installed furnace, preheating, heating, cooling, cleaning, etc., in order to achieve the desired state of the workpiece. It is emphasized that the preheating heat-resistant steel castings, heating and cooling sectors, which are usually preheated for complex shapes or cross-sections of the work carried out drastic changes in a job, the goal is to reduce the late residual stress.
Heating then pay attention to heating mode, if there is a groove on the workpiece blind hole, generally can not be heated in a salt bath furnace, while the need to ensure sufficient holding time. Cooling heat-resistant steel castings, too, cool place and time to be reasonable control.