Pre-aging method of 6016 aluminum alloy vehicle body plate

Abstract

The invention provides a pre-aging method of a 6016 aluminum alloy vehicle body plate, which comprises the following steps: A) heating a to-be-treated plate coil of a 6016 aluminum alloy vehicle body to a solid solution temperature, preserving heat, and performing water quenching; and B) quickly heating the plate coil obtained in the step A) to a high-temperature pre-aging temperature on line, preserving heat, curling, bundling and standing. According to the method, the 6016 aluminum alloy vehicle body plate is prepared through the high-temperature short-time and residual-temperature long-time short-process two-stage pre-aging technology, on the premise that the performance requirements of the finished plate are met, the working procedures and the occupied capacity are greatly reduced, and the production efficiency is improved. According to the technical scheme, the 6016 aluminum alloy vehicle body plate which is qualified and stable in performance is obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a pre-aging method for 6016 aluminum alloy body panels. Background technique [0002] 6016 aluminum alloy has become an ideal material for aluminum automobile body panels due to its excellent comprehensive mechanical properties. Pre-aging treatment is very important to the performance stability and bake hardening performance of aluminum alloy sheets. It is a key process of 6016 aluminum alloy body panels, which affects the punching effect of body panels and the service performance of body panels. [0003] The prior art provides a method for manufacturing 6xxx series aluminum alloy sheets for automobile bodies, which proposes a pre-aging process of heat preservation at 60-100°C for 2-10 hours, while the main manufacturers of 6xxx automobile body sheets at home and abroad mostly adopt Long-term (≥6h) heat preservation at low temperature of 60-100°C requires online heating ...

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Problems solved by technology

[0003] The prior art provides a method for manufacturing 6xxx series aluminum alloy sheets for automobile bodies, which proposes a pre-aging process of heat preservation at 60-100°C for 2-10 hours, while the main manufacturers of 6xxx automobile body sheets at home and abroad mostly adopt Long-term (≥6h) heat preservation at low temperature of 60-100°C requires online heating to the pre-aging temperature and long-term heat preservation in the furnace after coiling. After the heat preservation is completed, it needs to be cooled to room temperature in a natural environment. The time is close to 24 hours, the energy consumption is high, the production cycle is long, the efficiency of equipment production capacity is low, and the product market competitiveness is insufficient

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