Method for improving baking finish hardenability of AA6022 aluminum alloy sheet

Abstract

The invention provides a method for improving the harden ability of baking paint of AA6022 aluminium alloy plates, which includes the following steps: after solid solution and water quenching, the AA6022 aluminium alloy plates are subjected to preheating treatment in a week with the preheating treatment temperature of 60 to 100 DEG C and preheating treatment time of 30 minutes to 12 hours. The preheat treatment process effectively improves the intensity of the alloy after the paint is baked and further develops the potential of age hardening of the aluminium alloy; simultaneously, the intensity of materials before stamping is lower, which is beneficial for stamping-forming and further causes automobile factories to broadly adopt the aluminium alloy plates to replace steel plates for producing body stamping parts of automobiles.

Description

Method for Improving Hardenability of Baking Paint of AA6022 Aluminum Alloy Sheet technical field The invention relates to a preheating treatment process for improving the hardenability of baking paint of AA6022 aluminum alloy plate, belonging to the technical field of aluminum alloy heat treatment. Background technique Aluminum alloy materials have become the most ideal material for automobile lightweight due to their high specific strength, corrosion resistance, good impact resistance, easy surface coloring, good processing formability, and high recycling and regeneration properties. Since the 6xxx series aluminum alloys that can be strengthened by heat treatment have both good formability in the solid solution state (T4 state) and high strength in the paint state (T8 state), they are considered to be the most promising alloys for automobile body panels. In the production process of aluminum alloy automobile body panels, due to transportation and storage, the panels aft...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for improving the hardening properties of AA6022 aluminum alloy automotive sheet paint, which aims to effectively solve the current problems of low strength of AA6022 aluminum alloy automotive sheet after baking paint, so that the sheet can better meet Requirements for impact resistance of automotive panels

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