Why does the engraving machine cast iron bed need to be tempered?

        For the engraving machine that needs to process high strength and high precision, it needs to use cast iron bed. Why does the engraving machine body casting need tempering treatment: steel is the most widely used material in the mechanical industry. The steel microstructure is complex and can be controlled by heat treatment. Therefore, the heat treatment of steel is the main content of metal heat treatment. In order to make the machine tool castings have the required mechanical properties, physical properties and chemical properties, in addition to the rational selection of materials and various forming processes, the heat treatment process is indispensable. In addition, aluminum, copper, magnesium, titanium, and the like can also be modified by heat treatment to obtain different mechanical properties, physical properties, and chemical properties. The overall heat treatment is a metal heat treatment process that heats the cast iron plate, cast iron bent plate or machine bed castings and then cools them at an appropriate speed to change the overall mechanical properties of cast iron platforms, flat plates, cast iron plates or machine bed castings.

     

        Machine tool bed casting products as a large casting must be aged to improve its performance and improve the inherent quality of the bed castings. The overall heat treatment of castings such as machine bed castings, bed columns, and machine table is roughly four basic processes of annealing, normalizing, quenching and tempering. When the casting of the machine bed is tempered, the tempering process should be strictly observed. Supporting ribs should be added to the dense or easily deformed parts to prevent deformation and breakage due to tempering temperature. There should be someone to look after the tempering furnace thermometer to control the temperature in time to prevent the temperature from being too high or too low, which will have a great impact on the tempered workpiece.