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Formulating method for 5052 aluminum alloy strip cold rolling process

An aluminum alloy strip and process technology, which is applied in the direction of metal rolling, etc., can solve the problems of unfavorable direct use of rolling mills and lack of rolling process.

Active Publication Date: 2014-11-05
CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the cold rolling process of most aluminum alloy plate and strip manufacturers in China is obtained through a large number of trial production, constantly adjusting the rolling pass and annealing process, which is highly pertinent and practical, but lacks predictive rolling. Whether the rolling process is reasonable and the basis for further optimizing the rolling process is not conducive to direct use on other rolling mills

Method used

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  • Formulating method for 5052 aluminum alloy strip cold rolling process
  • Formulating method for 5052 aluminum alloy strip cold rolling process
  • Formulating method for 5052 aluminum alloy strip cold rolling process

Examples

Experimental program
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Effect test

Embodiment 1

[0126] in 5052 aluminum alloy is cold rolled on a 460mm / 1220mm×1850mm 4-roll reversible aluminum strip cold rolling mill. The thickness of the cast-rolled billet is 7mm, the width is 1200mm, and the coil weight is 4.5t. The thickness of the finished strip is required to be 0.4mm, and the finished state is H14.

[0127] The specific steps to develop a cold rolling process are:

[0128] (1) The state of the finished product is H14, and the cold rolling process includes the second intermediate annealing and the third rolling pass group. The third rolling pass group includes 1 pass, the total pass reduction rate of the third rolling pass group ε 0 25-45%, might as well take ε 0 Is 35%.

[0129] (2) Calculate the intermediate annealing thickness h according to the thickness of the finished product 0.4mm and the total pass reduction rate of the third rolling pass group of 35% 2 = 0.62mm. According to the billet thickness 7mm and the intermediate annealing thickness 0.62mm, the total red...

Embodiment 2

[0138] in 5052 aluminum alloy is cold rolled on a 460mm / 1220mm×1850mm 4-roll reversible aluminum strip cold rolling mill. The thickness of the cast-rolled billet is 5.5mm, the width is 1200mm, and the coil weight is 4.5t. The thickness of the finished strip is required to be 0.9mm, and the finished state is H16.

[0139] The specific steps to develop a cold rolling process are:

[0140] (1) When the finished product state is H16, the cold rolling process includes the second intermediate annealing and the third rolling pass group. The third rolling pass group includes 2 passes. The pass reduction ratios of the 2 passes are 30-50% and 15-35%, respectively. The total pass reduction of the third rolling pass group ε 0 Is 45-65%. Might as well take ε 0 = 55%, using the principle of the smallest difference between the rolling pressures of each pass to determine the reduction rates of the two passes to be 35.00% and 30.77%, respectively.

[0141] (2) Calculate the intermediate annealing...

Embodiment 3

[0148] in 5052 aluminum alloy is cold rolled on a 460mm / 1220mm×1850mm 4-roll reversible aluminum strip cold rolling mill. The thickness of the hot-rolled billet is 6.5mm, the width is 1200mm, and the coil weight is 5.5t. The thickness of the finished strip is required to be 0.2mm, and the finished state is H12.

[0149] The specific steps to develop a cold rolling process are:

[0150] (1) When the finished product state is H12, the cold rolling process includes the second intermediate annealing and the third rolling pass group. The third rolling pass group includes 1 pass, take the total pass reduction rate of the third rolling pass group ε 0 10-35%. Might as well take ε 0 Is 26.00%.

[0151] (2) According to the thickness of the finished product 0.2mm and the total pass reduction rate of the third rolling pass group of 26%, the intermediate annealing thickness h is calculated 2 =0.27mm. According to the billet thickness 6.5mm and the intermediate annealing thickness 0.27mm, the...

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Abstract

The invention relates to a formulating method for a 5052 aluminum alloy strip cold rolling process. The formulation method includes: according to the state of finished products, judging whether the cold rolling process includes a second intermediate annealing and a third rolling pass set or not; calculating the total reduction rate epsilon 1 from blanks to second intermediate annealing or the total reduction rate epsilon 2 from the blanks to the finished products; judging whether the cold rolling process includes first intermediate annealing and a second rolling pass set or not according to the state of the blanks and the total reduction rate epsilon 1 from the blanks to second intermediate annealing or the total reduction rate epsilon 2 from the blanks to the finished products; calculating thickness of the strips subjected to rolling passes and providing the cold rolling process of the 5052 aluminum alloy strips. With the formulating method, cold rolling sets included in the cold rolling process of the 5052 aluminum alloy strips, the number of the passes included in the cold rolling sets and the number of times of intermediate annealing can be determined, and the thickness of the strips during intermediate annealing and the reduction rate of each pass can be determined.

Description

Technical field [0001] The invention relates to a method for formulating a cold rolling process for a 5052 aluminum alloy plate and strip, and belongs to the technical field of non-ferrous metal processing. Background technique [0002] 5052 aluminum alloy has low density, good processing formability, corrosion resistance and medium strength. It is widely used in aviation, electronics, decoration and other fields in the form of plate, strip and foil. [0003] For 5052 aluminum alloy plates and strips for different purposes, the finished state and thickness of the finished product may be different, and the billet state and thickness may also be different. 5052 aluminum alloy is a non-heat-treated strengthened aluminum alloy, and the finished state has H1X state, H2X state, H3X state and O state, where X=2, 4, 6, 8. At present, 5052 aluminum alloy cold-rolled billets are mainly provided through two methods: hot rolling and casting. The thickness of the hot-rolled billet is usually ...

Claims

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Application Information

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IPC IPC(8): B21B3/00
Inventor 韩念梅赵丕植王捷
Owner CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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