Why Machine Tool Casting Needs Tempering Treatment

July 14 15:02:41, 2024

Why do machine tool bed castings require tempering: Steel is the most widely used material in the mechanical industry. The microstructure of steel 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 necessary mechanical properties, physical properties and chemical properties of machine tool castings, in addition to the rational selection of materials and various forming processes, the heat treatment process is essential. In addition, aluminum, copper, magnesium, titanium, and their alloys can also be changed by heat treatment of their mechanical, physical and chemical properties to obtain different performance. The overall heat treatment is a metal heat treatment process in which the cast iron plate, cast iron bending plate or machine tool bed casting is integrally heated and then cooled at an appropriate speed to change the overall mechanical properties of the cast iron platform, plate, cast iron bent plate or machine tool bed casting.
The heat treatment of machine tool castings is an important process link in mechanical manufacturing. Compared with other machining processes, heat treatment generally does not change the shape of the workpiece and the overall chemical composition, but by changing the microstructure within the workpiece, or changing the cast iron platform and machine tool The chemical composition of the casting surface gives or improves the performance of the workpiece. It is characterized by improving the intrinsic quality of cast iron platforms and machine tool bed castings. As a large-scale casting, the machine tool bed casting product must be treated with aging to improve its performance and improve the intrinsic quality of the bed casting. Machine tool bed castings, bed columns, machine tools and other castings overall heat treatment generally have annealing, normalizing, quenching and tempering four basic processes. The tempering process of machine tool bed castings should be strictly followed during tempering. Support ribs should be added to intensive or easily deformed parts of the machine bed to prevent deformation and fracture due to tempering temperatures. There should be a dedicated person to monitor the temperature of the oven and timely control the temperature to prevent the temperature from being too high or too low, which will have a great impact on the tempered parts.

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