5052 aluminum alloy end stock substrate and production method thereof

Abstract

The invention discloses a 5052 aluminum alloy end stock substrate and a production method thereof. The production method comprises the following production processes of: fusion casting, saw cutting, plane milling, heating, hot rolling and cold rolling, wherein molten aluminum subjected to fusion casting comprises the following chemical components in percentage by mass: not more than 0. 12 percent of Si, 0.28-0.39 percent of Fe, not more than 0.03 percent of Cu, not more than 0.03 percent of Mn, 2.35-2.65 percent of Mg, 0.21-0.26 percent of Cr, not more than 0.02 percent of Zn, 0.008-0.02 percent of Ti, not more than 0.02 percent of V, not more than 0.03 percent of each of other impurities, and the balance of Al, wherein the other impurities are not more than 0.15 percent in total; the melting temperature is 730-750 DEG C, the refining temperature is 725-740 DEG C, and the casting temperature is 680-690 DEG C; and the cold rolling process comprises the step of directly carrying out once five-stander cold continuous rolling on a 2.5-2.7mm hot-rolled blank to reach the finished-product thickness of being 0.22-0.26, wherein the total working rate is 90.3-91.2 percent. The production method disclosed by the invention ensures that the mechanical property of the 5052 aluminum alloy end stock substrate is stable and qualified and has the advantages of shortening the production flow and improving the production efficiency.

Description

technical field [0001] The invention relates to the field of aluminum alloy manufacturing, in particular to a 5052 aluminum alloy can lid material base material and a production method thereof. Background technique [0002] The 5052 and 5182 alloys are used for can lid materials. The 5052 alloy has a low magnesium content and is an early alloy. It was finalized in the late 1920s and has a wide range of uses; the 5182 alloy is an alloy with a high magnesium content. In the manufacture of easy-open lids, 5052 alloy is used more, accounting for about 60% of the total, and the thickness is mostly 0.22-0.26mm. 5052 is used for beverage caps and food caps without internal pressure, and 5182 is used for beverage caps with internal pressure. In the production of cans, it is the goal of the can industry to minimize the thickness of the sheet, improve the elongation and strength of the product, improve the utilization rate of materials, and reduce the production cost. At present, th...

AI Technical Summary

Problems solved by technology

The aluminum alloy is rolled in five passes in cold rolling. During the rolling process, the residence time of each pass is too long, causing the temperature to drop. Therefore, the annealing process is increased, and the energy cost is increased.

In addition, multi-pass cold rolling takes a long time to roll up and down, and the work efficiency is low

Moreover, in the processing of aluminum strips, most of the traditional single-stand cold rolling mills use full oil as the cooling lubricant, which often causes fire accidents due to broken strips

[0004] Another process for producing 5052 aluminum alloy can lid base material is: melting and casting→sawing→milling→homogenizing annealing→hot rolling→cold rolling→intermediate trimming→cold rolling→stretch bending straightening→coating → Finished product shearing; because edge thinning is easy to occur in the traditional 6-roll cold rolling process, in order to prevent belt breakage due to edge thinning, it is necessary to increase the intermediate edge trimming process, which increases the operating time and Reduced yield due to trimming waste

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