Abstract
Based on the requirements of automotive closure for production process and service performance, the property requirements of aluminum alloy sheet for automotive closure, including aging resistance stability, formability, bake hardening, dent resistance, flanging ductility, painting compatibility, etc., as well as introduced their test methods, evaluation characterization parameters, and the pre-aging process were discussed in this paper. Specially, the influential factors and control methods of spring-back of aluminum alloy sheet was discussed. The effect of the pre-aging process on the aging resistance stability and bake hardening of the aluminum alloy sheet for automotive was analyzed, and the property evolution of aluminum alloy sheet under industrial pre-aging process studied. The orange peel and roping phenomena of Al-Mg-Si alloy sheet after deformation were summarized as well.
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