Aluminum alloy heat treatment technology
Aluminum alloy casting heat treatment is to choose a certain heat treatment specification, control the heating rate rises to a corresponding temperature cooling, heat preservation time to must speed to change its alloy, its main purpose is to improve the alloy's mechanical properties, enhance the corrosion resistance, can improve the processing, get the size stability.
2, the characteristics of the aluminum alloy heat treatment
As is known to all, for carbon steel, immediate access to the high hardness after quenching, and the plastic is very low. But for aluminum alloy and otherwise, the aluminum alloy after quenching, higher strength and hardness is not immediately, as for the plastic instead of down, instead of rose. But this kind of alloy after quenching, placed a period of time (e.g., after 4 ~ 6 days and nights), strength and hardness will be significantly increased, and the plastic is significantly reduced. The strength and hardness of aluminum alloy after quenching grow along with the time and improve the phenomenon, referred to as aging. Aging can occur at room temperature, according to the natural aging, can also be higher than the room temperature at some stage in the temperature range (100 ~ 200 ℃), called artificial aging.
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