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Aluminum foil as well as manufacturing method and application thereof

A manufacturing method and technology of aluminum foil, applied in the direction of metal rolling, can solve the problems of aluminum foil that is not suitable for flexible packaging and its preparation, and achieve the effect of improving surface cleanliness and improving forming performance

Pending Publication Date: 2022-03-11
CHINALCO MATERIALS APPL RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN109295346A discloses "a soft aluminum alloy with high electrical conductivity and its manufacturing method and application". A soft aluminum alloy with high electrical conductivity is obtained by adjusting the alloy composition and processing method, but the disclosed alloy composition and manufacturing method are not suitable for flexible packaging aluminum foil and its preparation

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  • Aluminum foil as well as manufacturing method and application thereof

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Embodiment approach

[0056] According to one embodiment of the present invention, the manufacturing method of the aluminum foil includes the following steps:

[0057] Intermediate annealing step: performing intermediate annealing on the aluminum foil blank to obtain an annealed aluminum foil blank,

[0058] rolling step: rolling the annealed aluminum foil blank to obtain aluminum foil (also called semi-finished aluminum foil), and

[0059] Finished annealing step: performing finished annealing on the semi-finished aluminum foil to obtain aluminum foil (also called finished aluminum foil).

[0060] According to an embodiment of the present invention, in the manufacturing method of the aluminum foil, from the perspective of realizing the best technical effect of the present invention, the thickness of the aluminum foil blank is preferably 0.1-2.0 mm, more preferably 0.3-1.0 mm.

[0061] According to one embodiment of the present invention, in the manufacturing method of the aluminum foil, the inter...

Embodiment 1

[0093] A packaging aluminum foil, the aluminum foil is made of the following components by mass percentage:

[0094] Si is 0.048%, Fe is 1.24%, Cu is 0.014%, Mn is 0.011%, Mg is 0.005%, Zn is 0.012%, Cr is 0.0007%, Ti is 0.01%, V is 0.0014%, and the balance is Al and not Avoid impurities.

[0095] The manufacturing method of described aluminum foil comprises the following steps:

[0096] 1) Semi-continuous ingot homogenization treatment

[0097] Sawing the two ends and the remaining four sides of the semi-continuously cast rectangular ingot of the material, the sawing amount of the end and the side is 30mm and 15mm respectively, and then homogenize and keep warm in a heating furnace at 590°C After 18 hours, it was incubated at 480°C for 6 hours.

[0098] 2) Hot rolling

[0099] Under the lubrication of aqueous emulsion with a pH value of 7.5 and a temperature of 45-50°C, use a 1+1 train with a roll surface roughness of 0.63-1.25μm to roll the ingot at a temperature of 500°...

Embodiment 2

[0130] A packaging aluminum foil, which is made of the following components by mass percentage:

[0131] Si is 0.079%, Fe is 1.05%, Cu is 0.049%, Mn is 0.039%, Mg is 0.008%, Zn is 0.02%, Cr is 0.0016%, Ti is 0.007%, V is 0.0009%, and the rest is Al and not Avoid impurities.

[0132] The manufacturing method of described aluminum foil comprises the following steps:

[0133] 1) Semi-continuous ingot homogenization treatment

[0134] Sawing the two ends of the semi-continuous rectangular ingot made of the materials of the above components, the sawing amount is 30mm, and the other four sides are respectively two large faces and two small faces; Each small face is milled, and the cutting amount of each face is 15mm, and then the aluminum ingot is sent to a heating furnace at 570°C for homogenization treatment and kept for 10 hours, and then kept at 510°C for 5 hours.

[0135] 2) Hot rolling

[0136] Using work rolls with a surface roughness of 0.63-1.25 μm in 1+2 train hot roll...

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Abstract

The invention relates to an aluminum foil, which is characterized by comprising the following components in percentage by mass: 0.7-2.0 wt% of Fe; si, 0.02 to 0.9 wt%; cu, not more than 0.5 wt%; mg, not more than 0.1 wt%; mn, not more than 0.7 wt%; zn, no more than 0.05 wt%; cr, not more than 0.05 wt%; ti, not more than 0.1 wt%; the volume fraction of the cubic texture of the aluminum alloy is 5-20%, and the average surface grain size of the aluminum alloy is 5-35 microns. The invention also relates to a manufacturing method of the aluminum foil, a soft package lithium battery packaging material containing the aluminum foil, and a soft package lithium battery. According to the method, the aluminum foil with excellent softness can be obtained, the forming performance of the aluminum foil can be improved, and comprehensive improvement of the softness and the forming performance of the aluminum foil is achieved.

Description

technical field [0001] The invention relates to a packaging material, in particular to an aluminum foil. The invention also relates to a manufacturing method of the aluminum foil, a packaging material for a soft-packed lithium battery containing the aluminum foil, and a soft-packed lithium battery. Background technique [0002] With the rapid development of science and technology, the market demand for aluminum alloys is also increasing rapidly. Aluminum alloys are widely used in aerospace, electronic communications, military industry, medical treatment, machinery manufacturing and other fields. Aluminum foil plays an important role in the application of aluminum alloys. Because aluminum foil itself has the characteristics of light weight, strong barrier performance, high ductility, and good formability, it is widely used in packaging, electronics, electrical appliances, construction and other industries. [0003] Aluminum foil for flexible packaging of aluminum-plastic f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04B21B1/40
CPCC22C21/00C22F1/04B21B1/40
Inventor 陈伟金晓杰赵丕植马科郭世杰付裕冯丹
Owner CHINALCO MATERIALS APPL RES INST CO LTD
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