Characteristics of aluminum alloy heat treatment in vacuum heat treatment equipment

Characteristics of aluminum alloy heat treatment in vacuum heat treatment equipment

It is well known that for steels with higher carbon content, high hardness is obtained immediately after quenching, while ductility is very low. However, this is not the case for aluminum alloys. After the aluminum alloy is quenched, the strength and hardness do not increase immediately. As for the plasticity, not only does not decrease, but it increases. However, after this quenched alloy is placed for a period of time (such as 4 to 6 days and nights), the strength and hardness will be significantly improved, while the plasticity will be significantly reduced. The phenomenon that the strength and hardness of aluminum alloy after quenching increase significantly with time is called aging. Aging can occur at room temperature, which is called natural aging, or it can occur in a certain temperature range (such as 100-200 ℃) higher than room temperature, which is called artificial aging.

Vacuum heat treatment equipment stainless steel heat treatment manufacturers briefly analyze the principle of aluminum alloy heat treatment

The heat treatment of aluminum alloy castings is to select a certain heat treatment specification, control the heating rate to rise to a corresponding temperature, hold for a certain period of time, and cool at a certain rate to change the structure of the alloy. The main purpose is to improve the mechanical properties of the alloy and enhance corrosion resistance. performance, improve processing performance, and obtain dimensional stability.

Chemical surface heat treatment of vacuum heat treatment equipment

Chemical surface heat treatment is a metal surface heat treatment technology that changes the chemical composition, structure and function of the workpiece surface. The difference between chemical surface heat treatment and surface surface heat treatment is that the latter changes the chemical composition of the surface of the workpiece. Chemical surface heat treatment is to heat the workpiece in a medium (gas, liquid, solid) containing carbon, nitrogen or other alloying elements, keep it warm for a long time, and then make the surface of the workpiece enter elements such as carbon, nitrogen, boron and chromium. After entering the elements, other surface heat treatment techniques such as quenching and tempering are sometimes performed. The main methods of chemical surface heat treatment are carburizing, nitriding, and metalizing.

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