Casting-rolling method for aluminum alloy plate

Abstract

The invention discloses a casting-rolling method for an aluminum alloy plate. The method includes the following steps: furnace charge is placed in a smelting furnace and smelted into melt under the temperature of 700DEG C to 800DEG C, and the melt is refined for one time with argon blown into the smelting furnace and slag-off is carried out for one time every 1.5h to 2.5h; the melt is led into a still standing furnace, the temperature in the furnace is kept to be 725DEG C to 740 DEG C, 2kg / t to 3 kg / t of refining agents are added after still standing lasts for 15min to 1h, and the slag-off is carried out for one time after refining; the melt in the still standing furnace is led into a degasification tank, argon is blown into the degasification tank for degassing and refining every 1.5 to 2.5h, and the slag-off is carried out every 1h; the melt in the degasification tank is led into a filter tank to filter out impurities in the melt; and the melt is led into a middle upright plate of a front tank through a launder of the front tank, the liquid level of the melt in the front tank is controlled, and the melt is led into a double-roller continuous casting-rolling mill through a feeding mouth to form strip plates by continuous casting-rolling. The casting-rolling method for the aluminum alloy plate is little in investment and fast in effect achievement.

Description

technical field [0001] The invention belongs to the technical field of metal plate processing, and more specifically relates to a casting and rolling method of an aluminum alloy plate. Background technique [0002] 3004 aluminum alloy is used for punching cans, ship decks, food packaging and other industries. 3004 aluminum alloy punched cans have high yield, good decorative performance, strong plasticity and excellent anti-corrosion performance. Main technical indicators: the tensile strength of H28 is not less than 260MPa, and the elongation is greater than 3%; the tensile strength of H12 is 190-240MPa, and the elongation is greater than 5%. [0003] At present, the manufacturing process of 3004 aluminum alloy adopts direct water cooling method (DC method), including casting, ingot homogenization heat treatment, hot rolling, recrystallization annealing, cold rolling, annealing, and finally obtains foil 3004 aluminum alloy strip for packaging materials. Blank. Due to the ...

AI Technical Summary

Problems solved by technology

However, if the traditional casting and rolling method is used for production, due to the high content of impurities in the melt, it will cause technical problems such as vertical plate failure, sticking rolls and horseshoe-shaped cracks, which will affect product quality.

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