Machine tool castings are indispensable basic parts in machine tool manufacturing. They are mainly made of cast iron (such as gray cast iron, etc.). Through the casting process. With good rigidity, shock absorption, wear resistance and dimensional stability, it can meet the strict requirements of the machine tool for structural strength and accuracy. It covers key parts, such as beds, columns, beams, workbenches and spindle boxes. The structure of these parts is usually relatively complex. They need to be molded through sand casting, precision casting and other processes, and then aging treatment to eliminate internal stress to ensure that it is not easy to deform during long-term use.