Learn about the process description for the heat treatment of Steel rolling mill production line equipment

The steel rolling mill production line process is divided into hot rolling and cold rolling. Hot rolling is to heat the billet or ingot to a red-hot state, and then roll it into a steel with different cross-sectional shapes that can be used; cold rolling is usually hot-rolled.

The steel rolling mill production line process is divided into hot rolling and cold rolling. Hot rolling is to heat the billet or ingot to a red-hot state, and then roll it into a steel with different cross-sectional shapes that can be used; cold rolling is usually hot-rolled. The billet is rolled into a sheet with a thinner and smoother surface by the Steel rolling mill production line under the condition of normal temperature without heating; straightening is to straighten or straighten the steel in the rolling state through the straightening equipment flat.

The heat treatment of steel rolling mill production line equipment is a process that changes the structure and properties of solid steel materials through certain heating, heat preservation and cooling processes. Compared with other rolling mill processing processes, the heat treatment of steel rolling equipment generally does not change the microstructure inside the workpiece, but changes the chemical composition of the workpiece, and gives or improves the performance of the workpiece. Its characteristic is to improve the intrinsic quality of the workpiece. Heat treatment is particularly important for steel materials. This is because the steel material will produce very complex phase transitions during the heating and cooling process. The rolling equipment can control the parameters of the heating, heat preservation and cooling process during the heat treatment process, which can greatly change the structure of the steel and give the steel different properties. The heat treatment of steel rolling mill production line equipment is an extremely important means for people to control steel materials, control the organization of steel materials, and tap the potential of steel materials.

The basic steel rolling mill production line equipment heat treatment process includes annealing, normalizing, quenching, and tempering. Annealing is a heat treatment process in which the steel is heated to the phase transformation or partial transformation temperature, held for a period of time, and then slowly cooled. Normalizing is a heat treatment process in which the steel is heated to a temperature above the complete phase transformation, kept for a certain period of time, and then cooled in the air. Quenching is a heat treatment process in which the steel is heated to the phase transformation or partial transformation temperature, and then rapidly cooled after holding for a period of time. Tempering is a heat treatment process in which the quenched steel is reheated to a certain temperature (below the phase transition temperature), kept for a period of time, and then cooled. The combination of the above-mentioned processes can also obtain a composite heat treatment process, such as quenching the steel parts, followed by high-temperature tempering. This composite process is called quenching and tempering treatment.