Production method of 3005-H16 aluminum alloy plate strip

Abstract

The invention relates to an aluminum alloy plate strip, in particular to a production method of a 3005-H16 aluminum alloy plate strip, and aims at solving the technical problems that the requirement for annealing temperature uniformity is relatively high, the requirement for annealing furnace temperature control is relatively high, the performance, especially the yield strength, is unstable duringthe intermediate annealing process of the aluminum alloy plate strips, and surface defects such as oil patches and the like are easy to generate to cause waste products if cold rolling strips are notspecially cleaned in the prior art. The method comprises the following steps of: carrying out casting, wherein the ingot casting obtained through the casting comprises the following chemical components in mass percent: less than or equal to 0.5% of Si, 0.4-0.6% of Fe, less than or equal to 0.2% of Cu, less than or equal to 0.05% of each of other impurities, less than or equal to 0.10% of a sum ofthe other impurities and the balance of Al, a smelting temperature is 740-760 DE C, a refining temperature is 730-750 DEG C, a casting temperature is 685-700 DEG C, and a casting speed is 50-60 mm / min; and carrying out milling, heating, hot rolling and cold rolling to obtain the finished 3005-H16 aluminum alloy plate strip.

Description

technical field [0001] The invention relates to an aluminum alloy plate and strip, in particular to a production method for a 3005-H16 aluminum alloy plate and strip. Background technique [0002] 3005 alloy is one of the most widely used alloys in Al-Mn series alloys. This series of alloy products [0003] It has the characteristics of moderate strength, good plasticity, easy processing and forming, and good corrosion resistance. The plate and strip in H14 state not only has good processing formability, but also has moderate strength. As a high-grade decorative material, it has high added value and has a broad market prospect. [0004] At present, the traditional process of 3005-H16 is: melting and casting--sawing--homogenizing annealing--milling--heating--hot rolling--cold rolling--cleaning--intermediate annealing--cold rolling--finishing Whole - packaging. [0005] When the traditional hot rolling mill produces 3005 alloy, the final rolling temperature and the performa...

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Problems solved by technology

[0006] However, when this method adopts the intermediate annealing process, the requirements for the uniformity of the annealing temperature are high, the temperature control of the annealing furnace is high, and the performance is unstable, especially the yield strength; at the same time, if the cold-rolled strip is not specially cleaned, the It is easy to produce surface defects such as oil spots and lead to waste products

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