The three elements in the heat treatment process are temperature, time and speed. These three elements run through the whole process of heat treatment technician or technician's operation skill training and are the key to the success of heat treatment technician.

Heat treatment is a processing technology in which steel is heated to a predetermined temperature in a solid state, kept for a certain time, and then cooled down in some cooling way. The technological process is heating → heat preservation → cooling.

The purpose of metal heat treatment is to improve the local or overall performance of metal materials and products; The heat treatment process is a process of heating the metal to a predetermined temperature and keeping it for a certain time, and then cooling it.