Heat treatment of aluminium alloy

The purpose of casting heat treatment of aluminium alloy is to improve mechanical properties and corrosion resistance, stabilize dimensions, and improve processing properties such as cutting and welding. Because the mechanical properties of many as-cast aluminium alloys can not meet the application requirements, except for ZL102 of Al-Si system, ZL302 of Al-Mg system and Zl401 of Al-Zn system, the other casting aluminium alloys need to be further improved by heat treatment of aluminium alloys, which include the following aspects:Three-chamber-Horizontal-Oil-and-Gas-Quenching-Vacuum-Furnace

(1) Eliminate the internal stress caused by uneven cooling rate during solidification due to the structure of castings (uneven wall thickness, large thickness of junction), etc.High-Temperature-Metal-Melting-Furnace

(2) Improve the mechanical strength and hardness of the alloy, improve the metallographic structure, and ensure that the alloy has certain plasticity, cutting and welding properties.

(3) Stabilizing the structure and size of castings, preventing and eliminating high temperature phase transformation and changing the volume;

(4) Eliminate intergranular segregation and component segregation to homogenize the structure.Box-type-lab-inert-gas-vacuum-heat-treatment-furnace