Reasons for tempering of surface grinder bed castings
Why do surface grinder machine bed castings need tempering treatment: Steel is a widely used material in the machinery industry. The microstructure of steel is messy and can be manipulated by heat treatment. Therefore, the heat treatment of steel is the main content of metal heat treatment. In order to meet the mechanical, physical and chemical functions required by machine tool castings, in addition to reasonable selection of materials and various forming processes, heat treatment processes are indispensable. In addition, aluminum, copper, magnesium, titanium, etc. and their alloys can also be heat treated to modify their mechanical, physical and chemical functions to obtain different functions.
Its characteristic is to improve the connotative quality of cast iron channels and machine bed castings. As a large-scale casting, the machine tool bed casting product needs to undergo aging treatment to improve its own use function and improve the connotative quality of the bed casting. The heat treatment of all castings such as machine bed castings, machine bed columns, and machine tool tables generally includes four basic processes: annealing, normalizing, quenching and tempering. When the machine bed castings are tempered, the tempering process should be strictly followed, and the densely covered ribs or the easily deformable parts should be added with supporting ribs to avoid deformation and cracking caused by the tempering temperature. There should be a dedicated person to guard the tempering furnace thermometer to control the temperature in time to avoid the temperature being too high or too low, which will have a great impact on the tempering workpiece.
The overall heat treatment is a metal heat treatment process that heats the cast iron flat plate, cast iron bent plate or machine tool bed castings, and then cools them at an appropriate speed to modify the overall mechanical functions of the cast iron channel, flat plate, cast iron bent plate or machine tool bed castings.