Cast-rolling method of double-zero aluminum foil

A double-zero aluminum foil, casting and rolling technology, applied in the field of alloys, can solve the problems of small elongation, rough surface of double-zero foil, many pinholes, etc., and achieve the effect of less pores, uniform structure, high strength and elongation

Inactive Publication Date: 2013-04-24
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the double zero foil produced according to the existing casting and rolling process has problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method of preparing double zero aluminum foil is:

[0022] S 1 Degassing and deslagging: use a refining agent to degas and deslag the aluminum alloy melt. After the treatment, the hydrogen content of the melt is 0.15ml / 100g;

[0023] S 2 Casting and rolling: casting and rolling the melt obtained in S1, the thickness of the cast and rolling finished product is 6.5mm;

[0024] S 3 Cold rolling: cold rolling the cast and rolled finished product obtained in S2 to a thickness of 2.5 mm;

[0025] S 4 Uniform annealing: the cold-rolled finished product obtained in S3 is subjected to homogenization annealing at 450°C for 20 hours and then air-cooled; to eliminate segregation in grain boundaries and refine grains;

[0026] S 5 Cold rolling: secondary cold rolling of the annealed product obtained in S4 to a thickness of 0.6 mm;

[0027] S 6 Annealing: Perform intermediate annealing on the cold-rolled product obtained in S5 at 340°C; eliminate internal stress to continue...

Embodiment 2

[0033] A method of preparing double zero aluminum foil is:

[0034] S 1 Degassing and deslagging: use a refining agent to degas and deslag the aluminum alloy melt, and the hydrogen content of the melt after treatment is 0.13ml / 100g;

[0035] S 2 Casting and rolling: casting and rolling the melt obtained in S1, the thickness of the cast and rolling finished product is 6.6mm;

[0036] S 3 Cold rolling: cold rolling the cast and rolled finished product obtained in S2 to a thickness of 2.7 mm;

[0037] S 4 Uniform annealing: the cold-rolled finished product obtained in S3 is subjected to homogenization annealing at 460°C for 18 hours and then air-cooled; to eliminate segregation in grain boundaries and refine grains;

[0038] S 5 Cold rolling: secondary cold rolling of the annealed product obtained in S4 to a thickness of 0.58 mm;

[0039] S 6 Annealing: The cold-rolled product obtained in S5 is subjected to intermediate annealing at 350°C; internal stress is eliminated to...

Embodiment 3

[0045] A method of preparing double zero aluminum foil is:

[0046] S 1 Degassing and deslagging: use a refining agent to degas and deslag the aluminum alloy melt. After the treatment, the hydrogen content of the melt is 0.1ml / 100g;

[0047] S 2 Casting and rolling: casting and rolling the melt obtained in S1, the thickness of the cast and rolling finished product is 6.7mm;

[0048] S 3 Cold rolling: cold rolling the cast and rolled finished product obtained in S2 to a thickness of 2.9 mm;

[0049] S 4 Uniform annealing: the cold-rolled finished product obtained in S3 is subjected to homogenization annealing at 470°C for 16 hours and then air-cooled; to eliminate segregation in grain boundaries and refine grains;

[0050] S 5 Cold rolling: secondary cold rolling of the annealed product obtained in S4 to a thickness of 0.55 mm;

[0051] S 6 Annealing: The cold-rolled product obtained in S5 is subjected to intermediate annealing at 360°C; internal stress is eliminated to...

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Abstract

The invention belongs to the technical field of alloys, and particularly relates to a cast-rolling method of a double-zero aluminum foil. The invention aims to provide a cast-rolling method for preparing a double-zero aluminum foil with fine surface, high tensile strength and high elongation percentage. The technical scheme provided by the invention is as follows: the cast-rolling method for preparing a double-zero aluminum foil from the aluminum alloy comprises the following steps: S1. degassing and deslagging: the hydrogen content is at most 0.15 ml/100g; S2. cast-rolling: the melt obtained in S1 is subjected to cast-rolling until the thickness is 7.0+/-0.5mm; S3. cold-rolling: the finished product obtained in S2 is subjected to cold-rolling until the thickness is 2.5-4.0mm; S4. homogenizing annealing; S5. cold-rolling: the annealed product obtained in S4 is subjected to secondary cold-rolling until the thickness is 0.4-0.6mm; S6. annealing: interannealing; S7. cold-rolling: the annealed product obtained in S6 is subjected to cold-rolling until the thickness is 0.25-0.3mm; and S8. foil rolling: when the cold-rolling finished product obtained in S7 is rolled to the thickness of 0.01-0.02mm, double-rolling is carried out until the thickness is 0.006-0.007mm, thereby obtaining the aluminum foil.

Description

technical field [0001] The invention belongs to the technical field of alloys, in particular to a method for casting and rolling double-zero aluminum foil. Background technique [0002] Aluminum foil is widely used in the packaging industry, including tobacco packaging, food packaging, home decoration, etc., due to its excellent sealing performance, waterproof performance and shiny metallic luster, and it is compounded with paper and plastic film to form a suitable packaging material. Based on the demand for environmental protection and saving raw materials, the thickness of aluminum foil is getting thinner and thinner. Aluminum foil with a thickness of less than 0.01mm is called double zero foil. [0003] The production of double zero foil by hot rolling can obtain better surface quality and moderate mechanical properties. In order to further reduce the production cost and initial investment, the double-zero aluminum foil currently produced on the market is generally produ...

Claims

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Application Information

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IPC IPC(8): C22F1/04B22D11/06
Inventor 田常娟袁媛陈金灵
Owner SNTO TECH GRP
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