Why do machine tool castings need tempering treatment

The tempering heat treatment of machine tool castings is an important process in mechanical manufacturing. Compared with other processing techniques, heat treatment generally does not change the shape and overall chemical composition of the workpiece. Instead, it imparts or changes the performance of the workpiece by altering the microstructure inside the workpiece or changing the chemical composition of the cast iron platform and machine tool casting surface. Its characteristic is to change the inherent quality of cast iron platforms and machine tool bed castings. As a large type of casting, machine tool bed body castings need to undergo aging treatment to improve their performance and increase the intrinsic quality of the bed body castings. The overall heat treatment of castings such as machine tool bed, bed column, and machine tool worktable can be roughly divided into four basic processes: annealing, normalizing, quenching, and tempering.

When tempering machine tool bed castings, the tempering process should be strictly followed. Supporting ribs should be added to densely packed or easily deformed parts of the rib plate to prevent deformation and fracture caused by tempering temperature. There should be a dedicated person to monitor the tempering furnace thermometer, control the temperature in a timely manner, and prevent the temperature from being too high or too low, which will have a significant impact on the tempering workpiece.

Why do machine tool castings need tempering treatment: Steel is a widely used material in the mechanical industry. The microstructure of steel is complex and can be controlled through heat treatment, so heat treatment of steel is the main content of metal heat treatment. In order to achieve the required mechanical, physical, and chemical properties of machine tool castings, heat treatment processes are essential in addition to the rational selection of materials and various forming processes. In addition, aluminum, copper, magnesium, titanium and their alloys can also change their mechanical, physical and chemical properties through heat treatment to obtain different performance characteristics. Integrated heat treatment is a metal heat treatment process that heats cast iron flat plates, cast iron bent plates, or machine tool bed castings as a whole, and then cools them at an appropriate speed to change the overall mechanical properties of cast iron platforms, flat plates, cast iron bent plates, or machine tool bed castings. Therefore, tempering heat treatment of machine tool castings is very important!

Our main products include cast iron flat platforms, welding platforms, marking platforms, 3D flexible welding platforms, T-groove assembly platforms, boring and milling machine workbenches, bending plates, square boxes, shim plates, machine tool research and inspection tools, marble platforms, and various measuring tools.

Our company also undertakes solid and resin sand casting, including cushion boxes for steam turbine factories, bed bodies, columns, beams, workbenches, cast iron bases for mechanical equipment, etc. for machine tool factories. The product is manufactured reasonably, structurally stable, has a long service life, and is made of gray iron HT200-300 ductile iron QT400-500. The hardness of the cast iron platform/plate is HB170-240

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