Thermal treatment process of aluminum foil stock

A blank and process technology, which is applied in the heat treatment process of aluminum foil blanks, can solve problems such as uneven tissue composition, low yield of aluminum foil production, component segregation, etc., and achieve the effect of good surface quality, uniform metallic luster, and simple and easy methods

Inactive Publication Date: 2012-10-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the aluminum foil blanks produced by this production method still have defects such as uneven structure and component segregation, which lead to a low yield of aluminum foil production: ≤85%, poor surface quality, and a large number of pinholes, etc., which cannot meet high-quality products. Production of ultra-thin aluminum foil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 The aluminum foil blank is a roll of foil blank rolled to 3.0×1700mm; high temperature annealing, the annealing treatment system is: 550°C×1h (fan opening: cycle 100%, blowing 80%), 550°C× 6h (fan opening: circulation 80%, blowing 80%), 550℃×18h (fan opening: circulation 80%, blowing 40%); after high temperature annealing, rolling again, after rolling to a thickness of 0.60mm Intermediate annealing treatment again, the annealing treatment system is: 460°C×1h (fan opening amount: cycle 100%, blowing 80%), 460°C×7h (fan opening amount: cycle 80%, blowing 80%), 460 ℃×6h (fan opening amount: cycle 100%, blowing 40%), 360°C×0.5h (fan opening amount: cycle 80%, blowing 80%), 360°C×2h (fan opening amount: cycle 80% , purging 40%); subsequent rolling; finished aluminum foil.

Embodiment 2

[0021] Example 2 The aluminum foil blanks are 4 rolled to 4.0×1200mm foil blank rolls; high temperature annealing, the annealing treatment system is: 550°C×1h (fan opening: cycle 100%, blowing 80%), 550°C×6h (Amount of fan opening: circulation 80%, blowing 80%), 550℃×18h (fan opening amount: circulation 80%, blowing 40%); rolling again after high temperature annealing, rolling to 0.60mm thick again Intermediate annealing treatment, the annealing treatment system is: 460 ℃ × 1h (fan opening: cycle 100%, blowing 80%), 460 ℃ × 7h (fan opening: circulation 80%, blowing 80%), 460 ℃ ×7h (fan opening: circulation 100%, blowing 50%), 360℃×0.5h (fan opening: circulation 90%, blowing 90%), 360℃×2h (fan opening: circulation 90%, Purge 50%); subsequent rolling; finished aluminum foil.

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Abstract

A thermal treatment process of aluminum foil stock comprises the steps of: carrying out high-temperature homogenizing annealing when an original plate blank is rolled into be 2.0-4.0mm in thickness, wherein the high-temperature homogenizing annealing is realized by three steps: adopting segmented time annealing under the condition being 540-560 DEG C, rolling continuously after the high-temperature homogenizing annealing according to annealing time with different specifications; carrying out intermediate annealing by one time when the aluminum foil stock is rolled to be 0.50-0.70mm in thickness, carrying out annealing treatment by five steps, and determining the temperature time according to specification requirements of a product. The pinhole degree of the aluminum foil produced by using the process disclosed by the invention is smaller than 300/m<2>; the rate of finished products is greater than or equal to 90%; the strength of 0.006mm aluminum foil is 70-90MP, and the surface quality and the metallic luster are uniform.

Description

[0001] technical field [0002] The invention relates to a heat treatment process for an aluminum foil blank, in particular to a foil blank heat treatment method for producing ultra-thin aluminum foil (aluminum foil with a thickness less than 0.0065mm). Background technique [0003] Aluminum foil is widely used in various fields such as electrical appliances, packaging, and construction. With the development of the times, the application range has also increased, and higher requirements have been put forward for product quality. At present, the most industrialized mass production is aluminum foil with a minimum thickness of 0.0055~0.006, and it is the development trend of the aluminum foil industry to further reduce the thickness of aluminum foil and increase the yield. [0004] Aluminum foil billets usually made of melt continuous casting and rolling plates through cold rolling (CC material), or ingots cast by semi-continuous casting through hot rolling and cold rolling (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
Inventor 黄元春朱弘源肖政兵刘宇杜志勇
Owner CENT SOUTH UNIV
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