home Cnc Machining Guide Why do machining center bed castings need aging treatment

Why do machining center bed castings need aging treatment

Why do machining center bed castings need aging treatment: In order to make the bed castings have the required mechanical properties, physical properties and chemical properties, in addition to the reasonable selection of materials and various forming processes, heat treatment processes are indispensable. Steel is the most widely used material in the machinery 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 addition, aluminum, copper, magnesium, titanium, etc. and their alloys can also change their mechanical, physical and chemical properties through heat treatment to obtain different performance properties. Integral heat treatment is a metal heat treatment process that heats the bed castings as a whole, and then cools them at an appropriate speed to change the overall mechanical properties of the cast iron platform or bed castings.

The overall heat treatment of the machining center bed castings roughly includes four basic processes: annealing, normalizing, quenching and tempering. When the bed casting is tempered, the tempering process should be strictly followed. Supporting ribs should be added to the dense or deformable parts of the cast iron platform to prevent deformation and fracture caused by the tempering temperature. There should be someone to take care of the tempering furnace thermometer and control the temperature in time to prevent the temperature from being too high or too low, which will have a great impact on the tempering workpiece (cast iron platform or bed casting).

As a large-scale casting, the bed casting must undergo aging treatment to improve its performance and improve the inherent quality of the cast iron platform and bed casting. Metal heat treatment is an important process in mechanical manufacturing. Compared with other processing technologies, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but by changing the microstructure inside the workpiece, or changing the cast iron plate and bed castings The chemical composition of the surface imparts or improves the performance of the workpiece. Its characteristic is to improve the inherent quality of cast iron plates and bed castings.

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