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Method for formulating cold rolling process of 5052 aluminum alloy plate and strip

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

Active Publication Date: 2016-08-31
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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  • Method for formulating cold rolling process of 5052 aluminum alloy plate and strip
  • Method for formulating cold rolling process of 5052 aluminum alloy plate and strip
  • Method for formulating cold rolling process of 5052 aluminum alloy plate and strip

Examples

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Effect test

Embodiment 1

[0126] exist 460mm / 1220mm×1850mm 4-roller reversible aluminum strip cold rolling mill cold-rolled 5052 aluminum alloy, cast-rolled billet thickness 7mm, width 1200mm, coil weight 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 formulate the cold rolling process are:

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

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

Embodiment 2

[0138] exist 460mm / 1220mm×1850mm 4-roller reversible aluminum strip cold rolling mill cold-rolled 5052 aluminum alloy, the thickness of the cast-rolled billet was 5.5mm, the width was 1200mm, and the coil weight was 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 formulate the cold rolling process are:

[0140] (1) If the finished product state is H16 state, 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 rate intervals of the 2 passes are 30-50% and 15-35% respectively, the total pass reduction rate of the third rolling pass group ε 0 45-65%. May wish to take ε 0 =55%, using the principle that the rolling pressure difference of each pass is the smallest, the reduction rates of the two passes are determined to be 35.00% and 30.77%, respectively.

[0141] (2) Calculate the...

Embodiment 3

[0148] exist 460mm / 1220mm×1850mm 4-roller reversible aluminum strip cold-rolling mill is used to cold-roll 5052 aluminum alloy. 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 formulate the cold rolling process are:

[0150] (1) If the finished product state is H12 state, 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 ε of the third rolling pass group 0 10-35%. May wish to take ε 0 is 26.00%.

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

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Abstract

The invention relates to a method for formulating the cold rolling process of 5052 aluminum alloy plate and strip. According to the state of the finished product, it is judged whether the cold rolling process includes the second intermediate annealing and the third rolling pass group; and the total reduction from the billet to the second intermediate annealing is calculated. Rate ε 1 Or the total reduction ratio from blank to finished product ε 2 ;According to the state of the billet and the total reduction ε from the billet to the second intermediate annealing 1 Or the total reduction ratio from blank to finished product ε 2 , to determine whether the cold rolling process includes the first intermediate annealing and the second rolling pass group; calculate the thickness of the plate and strip after rolling each pass, and provide the cold rolling process of the 5052 aluminum alloy plate and strip. It can be determined that the cold rolling process of 5052 aluminum alloy plate and strip includes several groups of cold rolling, how many passes are included in each group of cold rolling, including several intermediate annealings, and the thickness of the plate and strip during intermediate annealing and the number of passes per pass can be determined. Secondary reduction rate.

Description

technical field [0001] The invention relates to a method for formulating a cold rolling process of 5052 aluminum alloy plate and strip, and belongs to the technical field of nonferrous metal processing. Background technique [0002] 5052 aluminum alloy has low density, good formability, corrosion resistance and medium strength, and is widely used in aviation, electronics, decoration and other fields in the form of strip and foil. [0003] 5052 aluminum alloy sheets and strips for different purposes may have different finished states and finished product thicknesses, as well as blank states and blank thicknesses. 5052 aluminum alloy belongs to non-heat treatment 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 by hot rolling and casting and rolling. The thickness of the hot-rolled billet is usually 2.5-8mm, and the thickness of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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