Method for eliminating annealing wrinkles of aluminum alloy strip

A technology for aluminum alloy strips and aluminum alloys, applied in furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as wrinkling, achieve uniform internal stress distribution, and avoid extrusion deformation.

Active Publication Date: 2021-07-23
GUANGXI LIUZHOU YINHAI ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a production method for eliminating annealing wrinkling of aluminum alloy strips,

Method used

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  • Method for eliminating annealing wrinkles of aluminum alloy strip
  • Method for eliminating annealing wrinkles of aluminum alloy strip
  • Method for eliminating annealing wrinkles of aluminum alloy strip

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0024] Example one

[0025] The method of the present invention is treated with an aluminum alloy strip 1, the alloy 1100 (the metal in a 1xxx series aluminum alloy), the thickness of the blank is 3.0 mm, the finished product thickness is 0.6mm, the width is 1200mm, the volume of the volume of 2000mm, including the following steps:

[0026] A. Separation of the billet, 35% in the second pressure, the thickness rolled from 3.0mm to 1.95 mm;

[0027] B. The middle path, the second secondary pressure is 40%, the thickness is 1.95mm rolled to 1.17mm, the third secondary pressure is 35%, and the thickness is rolled by 1.17 mm to 0.76 mm;

[0028] C. Ends, the amount of the second pressure is 20%, the thickness is rolled from 0.76 mm to 0.6 mm;

[0029] D. The complete annealing begins to heat up, the furnace temperature rises to 500 ° C, the temperature rise time is 8 hours;

[0030] E. Aluminum alloy strip temperature is warmed to complete annealing target temperature, heat insulation...

Example Embodiment

[0031] Example 2

[0032] The method of the present invention is treated with an aluminum alloy strip 2, the alloy 3003 (the metal in a 3xxx series aluminum alloy), the thickness of the blank is 3.0 mm, the thickness of the finished product is 0.6mm, the width is 200mm, the volume diameter is 1800mm, including the following steps:

[0033] A. Separation of the billet, 35% in the second pressure, the thickness rolled from 3.0mm to 1.95 mm;

[0034] B. The middle path, the second secondary pressure is 40%, the thickness is 1.95mm rolled to 1.17mm, the third secondary pressure is 35%, and the thickness is rolled by 1.17 mm to 0.76 mm;

[0035] C. Ends, the amount of the second pressure is 20%, the thickness is rolled from 0.76 mm to 0.6 mm;

[0036] D. Complete annealing begins to heat up, the furnace temperature rises to 450 ° C, 10 hours at the time;

[0037] E. Aluminum alloy strip temperature is warmed to complete annealing target temperature, heat insulation, cooled to 200 ° C. ...

Example Embodiment

[0038] Example three

[0039] The method of the present invention is used to treat aluminum alloy strips 3, alloy 5052 (the metal in 5xxx series aluminum alloy), the thickness of the blank is 3.0 mm, the finished product thickness is 0.74mm, the width is 2600mm, the volume diameter of 1800 mm, including the following steps:

[0040] A. Separation of billets, the amount of the second pressure is 25%, and the thickness is rolled from 3.0 mm to 2.25 mm;

[0041] B. The middle path, the second secondary pressure is 30%, the thickness is rolled by 2.25mm to 1.58mm, the third secondary pressure is 27%, the thickness is rolled by 1.58 mm to 1.15mm, the third pressure under pressure The amount is 24%, the thickness is rolled by 1.15 mm to 0.87 mm;

[0042] C. Finally, the amount of 5% is 15%, the thickness is rolled from 0.87 mm to 0.74 mm;

[0043] D. Complete annealing starts to heat up, the furnace temperature rises to 400 ° C, temperature is warmed 12 hours;

[0044] E. Aluminum alloy...

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Abstract

The invention discloses a method for eliminating annealing wrinkles of an aluminum alloy strip, and belongs to the technical field of aluminum alloy production. Before complete annealing, the rolling reduction of the first pass of cold rolling of the aluminum alloy strip is controlled to be 25%-35%; the rolling reduction of the middle pass of the cold rolling of the aluminum alloy strip is controlled to be 25%-40%, and the rolling reduction is gradually reduced by 3%-5% one by one; the final pass rolling reduction of the cold rolling of the aluminum alloy strip is controlled to be 15%-20%; heating is started after the complete annealing, the temperature of furnace gas rises to 400-500 DEG C, and the heating time is longer than or equal to 8 hours; and the furnace gas is heated to a target temperature for the complete annealing, heat preservation is conducted, cooling is conducted to 200 DEG C or below along with a furnace after the heat preservation, and discharging is conducted from the furnace. The invention provides a production method for eliminating the annealing wrinkles of the aluminum alloy strip. The method can solve the problem that after an aluminum alloy cold-rolled strip is annealed, wrinkles appear in the middle of an inner ring of a coiled material in the width direction.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy production, in particular to a method for eliminating annealing wrinkling of aluminum alloy strips in the aluminum alloy production process. Background technique [0002] In the production process of aluminum alloy, since complete annealing can eliminate work hardening, restore the material to its original state, and obtain O state, it is often necessary to perform complete annealing, and then perform corresponding cold deformation after complete annealing to obtain the corresponding state and performance . [0003] However, in the actual production process, we often find that after the aluminum alloy strip is fully annealed, irregular annealing wrinkling defects will occur in the middle of the strip at the inner diameter of the coil with a wall thickness of 200 mm to 300 mm, and the occurrence of annealing wrinkling defects The reason is: during the rolling process of the aluminum alloy s...

Claims

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Application Information

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IPC IPC(8): C22F1/04C21D8/02C21D1/26C21D9/52
CPCC22F1/04C21D8/0236C21D8/0247C21D1/26C21D9/52
Inventor 梁新华马英义黄文辉盘健进庞凤蒋泽鑫覃燕玲
Owner GUANGXI LIUZHOU YINHAI ALUMINUM IND
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