Short-process rolling method for cold-rolled 5052 alloy tank cover material

Abstract

The invention relates to the technical field of 5052 alloy tank cover cold rolling, in particular to a short-process rolling method for a cold-rolled 5052 alloy tank cover material. The short-processrolling method for the cold-rolled 5052 alloy tank cover material comprises a cast-rolling roll and further comprises the following steps that double-rack cogging is conducted, specifically, the cast-rolling roll is transferred to a double-rack cold rolling mill so as to be subjected to double-rack continuous rolling, and the thickness of a plate subjected to double-rack continuous rolling is converted into 0.55 to 0.85 mm; single-rack primary rolling is conducted, specifically, a strip rolled by the double-rack cold rolling mill is fed into one single-rack cold rolling mill, and the thicknessof the plate subjected to single-rack primary rolling is converted into 0.2 to 0.45 mm; and single-rack secondary rolling is conducted, specifically, the plate is fed into the other single-rack coldrolling mill again after being subjected to primary rolling through a single rack, and the thickness of the plate subjected to secondary rolling is converted into 0.18 to 0.26 mm. According to the short-process rolling method for the cold-rolled 5052 alloy tank cover material provided by the invention, the double-rack cold rolling mill and the two single-rack cold rolling mills are arranged and correspondingly adjusted, so that on one hand, the production efficiency can be greatly improved, on the other hand, due to reduction of process waste, the yield can be increased, and compared with a single-rack six-pass production mode, the production cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of cold rolling of 5052 alloy can lids, in particular to a short-flow rolling method for cold rolling 5052 alloy can lid materials. Background technique [0002] 5052 alloy for can lid material is a kind of magnesium-aluminum alloy, which is an early type of alloy. %, the thickness is mostly 0.22-0.26mm. 5052 is used for beverage caps and food caps without internal pressure. In the production of cans, the thickness of the hot-rolled coil stock is generally 2.7-3.0mm, and the cold-rolling needs to go through 5-6 passes of rolling to minimize the thickness of the plate while ensuring proper elongation and strength. The material thickness is 0.27mm, 0.26mm, 0.25mm, 0.24mm, 0.22mm; improving material utilization and reducing production costs are the goals pursued by the can industry. At the same time, the domestic lid making industry continues to develop, and the demand for base materials increases, which als...

AI Technical Summary

Problems solved by technology

[0003] At present, the cold-rolled production process of 5052 aluminum alloy can lid material base material is: single-frame blanking (first pass) → single-stand second pass → cooling → single-stand third pass → single-stand fourth pass → cooling → single stand The fifth pass of the stand → the sixth pass of the single-stand stand (finished product), and the finished product is obtained through repeated rolling of six passes in a single stand. Now some rolling methods have low production efficiency, because the multi-pass rolling process has a lot of waste and the yield of finished products is low.

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