阅读说明：本技术 一种绿色循环法生产的8011单零箔及其制造方法 (8011 single zero foil produced by green circulation method and manufacturing method thereof ) 是由 赵旭东 王毓玮 周林林 曹世民 吴保剑 方小雪 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种绿色循环法生产的8011单零箔及其制造方法,其组成成分及质量百分比为：Si0.6～0.7,Fe0.8～0.9％,Cu0.03～0.05％,Mn≤0.05％,Zn≤0.05％,Ti0.02～0.05％,余量为Al。制造方法包括熔炼、铸轧、粗轧、中间退火、切边、精轧、成品退火、检验包装等步骤。本发明制备的成品抗拉强度95-120Mpa,延伸率可达3.0％以上。本发明与使用铝锭铸轧方法生产的成品相比,力学性能、针孔数、耐腐蚀性能相当,但因其能具有废料循环利用、绿色节能、成品率高、加工性能好等优点,对整个市场的节能减排,绿色生产等具有明显的促进作用。(The invention discloses 8011 single zero foil produced by a green circulation method and a manufacturing method thereof, and the foil comprises the following components by mass percent: 0.6-0.7% of Si, 0.8-0.9% of Fe0.03-0.05% of Cu0.03-0.05%, less than or equal to 0.05% of Mn, less than or equal to 0.05% of Zn, 0.02-0.05% of Ti0.02-0.05% of Ti and the balance of Al. The manufacturing method comprises the steps of smelting, casting and rolling, rough rolling, intermediate annealing, trimming, finish rolling, finished product annealing, inspection, packaging and the like. The tensile strength of the finished product prepared by the method is 95-120Mpa, and the elongation can reach more than 3.0%. Compared with a finished product produced by using an aluminum ingot casting and rolling method, the invention has equivalent mechanical property, pinhole number and corrosion resistance, but has obvious promotion effect on energy conservation and emission reduction, green production and the like of the whole market because the invention has the advantages of waste recycling, environmental protection, energy saving, high yield, good processing property and the like.)

1. A8011 single zero foil produced by a green circulation method is characterized by comprising the following alloy components in percentage by mass: 0.6-0.7% of Si, 0.8-0.9% of Fe, 0.03-0.05% of Cu, less than or equal to 0.05% of Mn, less than or equal to 0.05% of Zn, 0.02-0.05% of Ti and the balance of Al.

2. A manufacturing method of 8011 single zero foil produced by a green cycle method is characterized by comprising the following steps:

(1) smelting and casting-rolling: smelting an alloy with specified components and casting and rolling the alloy into an aluminum coil with the thickness of 6.5-7.0 mm;

(2) rough rolling: rolling the blank into an aluminum coil with the thickness of 1.8-3.5 mm through 2-4 passes;

(3) homogenizing and annealing: carrying out homogenizing annealing on the aluminum coil prepared in the step (2), firstly heating to 250-280 ℃ at a speed of 1.0-2.2 ℃/min, keeping the temperature for 60-100 min, then heating to 530-550 ℃ at a speed of 1.0-2.5 ℃/min, keeping the temperature for 400-500 min, finally cooling to 450-500 ℃, and keeping the temperature for 180-300 min;

(4) rough rolling and trimming: roughly rolling the aluminum coil prepared in the step (3) for 2-4 passes until the thickness is 0.26mm, cooling for 12-24 hours, and trimming;

(5) finish rolling: performing finish rolling on the aluminum coil prepared in the step (4), and rolling the aluminum coil into an aluminum coil with the thickness of 0.01-0.02mm through 3-5 passes;

(6) slitting: slitting the aluminum coil prepared in the step (5);

(7) annealing of a finished product: annealing the finished product of the aluminum coil prepared in the step (6), heating to 180-220 ℃ at the speed of 1.0-2.2 ℃/min, keeping the temperature for 500-600 min, heating to 200-250 ℃ at the speed of 1.0-2.5 ℃/min, and keeping the temperature for 100-180 min;

(8) and (3) checking and packaging: the thickness, width size, end face quality and surface quality of the product are checked, and the product can be packaged after being checked to be qualified.

3. The method of claim 2, wherein step (1) comprises providing a titanium wire feed point before the inlet of the filter box and increasing the temperature of the titanium wire feed point.

4. The method as claimed in claim 2, wherein in step (1), the flow rate of argon is stabilized at 12-18L/min and the rotor speed is at 490-510rpm in the degassing tank.

5. The method of claim 2, wherein the temperature of the second soaking section is reduced to prevent coarse grains, the soaking time is reduced, and the final soaking temperature is reduced in step (3).

6. The method for manufacturing 8011 single zero foil produced by green cycle method of claim 2, wherein in step (7) the forced cooling of the out-furnace blower is set to be less than or equal to 70 ℃, the sampling is performed to obtain mechanical properties, and the tensile strength is checked to be greater than or equal to 100MPa and the elongation is checked to be greater than or equal to 3.0%.

7. The method of claim 2, wherein the 8011 single zero foil manufactured in green cycle mode is manufactured in a green cycle mode, and the step (8) comprises inspecting whether the surface of the foil is oxidized, scratched or rolled, whether the end surface of the foil is neat, whether the foil is frayed or not, whether the foil is completely degreased, and whether the brushing level is a + or higher.

Technical Field

The invention relates to 8011 single zero foil produced by a green cycle method and a manufacturing method thereof.

Background

With the development of light weight, the demand of aluminum foil in the fields of packaging, electrolytic capacitors, heat insulation and the like is continuously increased, on one hand, a plurality of manufacturers have the phenomenon that the order supply is short of demand, and the price of aluminum ingots is also increased all the way; on the other hand, in the process of processing the aluminum foil, a lot of waste materials are generated in the stages of rough rolling, finish rolling and trimming, and how to utilize the waste materials becomes a problem to be solved urgently. Through two years of production practice, the key technology for producing 8011 single zero foil by using waste is overcome, and the product quality of the single zero foil is qualitatively improved. The aluminum foil blank (7.0mm) produced by the cast rolling of our company can produce the single zero foil with the thickness of 0.01-0.02mm, the quality problems of the performance, the broken strip and the like of the single zero foil are effectively solved, and the product quality meets the requirements of downstream customers.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides 8011 single zero foil produced by a green cycle method and a manufacturing method thereof.

A8011 single zero foil produced by a green circulation method comprises the following alloy components in percentage by mass: 0.6-0.7% of Si, 0.8-0.9% of Fe, 0.03-0.05% of Cu, less than or equal to 0.05% of Mn, less than or equal to 0.05% of Zn, 0.02-0.05% of Ti and the balance of Al.

A manufacturing method of 8011 single zero foil produced by a green cycle method comprises the following steps:

(1) smelting and casting-rolling: smelting an alloy with specified components and casting and rolling the alloy into an aluminum coil with the thickness of 6.5-7.0 mm;

(2) rough rolling: rolling the blank into an aluminum coil with the thickness of 1.8-3.5 mm through 2-4 passes;

(3) homogenizing and annealing: carrying out homogenizing annealing on the aluminum coil prepared in the step (2), firstly heating to 250-280 ℃ at a speed of 1.0-2.2 ℃/min, keeping the temperature for 60-100 min, then heating to 530-550 ℃ at a speed of 1.0-2.5 ℃/min, keeping the temperature for 400-500 min, finally cooling to 450-500 ℃, and keeping the temperature for 180-300 min;

(4) rough rolling and trimming: roughly rolling the aluminum coil prepared in the step (3) for 2-4 passes until the thickness is 0.26mm, cooling for 12-24 hours, and trimming;

(5) finish rolling: performing finish rolling on the aluminum coil prepared in the step (4), and rolling the aluminum coil into an aluminum coil with the thickness of 0.01-0.02mm through 3-5 passes;

(6) slitting: slitting the aluminum coil prepared in the step (5);

(7) annealing of a finished product: annealing the finished product of the aluminum coil prepared in the step (6), heating to 180-220 ℃ at the speed of 1.0-2.2 ℃/min, keeping the temperature for 500-600 min, heating to 200-250 ℃ at the speed of 1.0-2.5 ℃/min, and keeping the temperature for 100-180 min;

(8) and (3) checking and packaging: the thickness, width size, end face quality and surface quality of the product are checked, and the product can be packaged after being checked to be qualified.

Preferably, a titanium wire adding point is arranged in front of the inlet of the filter box in the step (1), and the temperature of the titanium wire adding point is increased.

Preferably, step (1) is performed in a degassing tank, the flow rate of argon is stabilized at 12-18L/min, and the rotation speed of a rotor is 490-510 rpm.

Preferably, in step (3), in order to prevent coarse grains, the temperature of the second heat-preservation stage can be reduced, the heat-preservation time is reduced, and the final heat-preservation temperature is reduced.

Preferably, the forced cooling of the discharging fan is set to be less than or equal to 70 ℃ in the step (7), sampling is carried out to obtain mechanical property, and whether the tensile strength is greater than or equal to 100MPa and the elongation is greater than or equal to 3.0% is checked.

Preferably, in the packaging process, the items tested in the step (8) include whether the surface has oxidation, scratch and rolling defects, whether the end surface is neat, whether the string layer exists, whether the oil removal is clean and whether the brushing grade is greater than or equal to A +.

Has the advantages that:

the tensile strength of the finished product prepared by the method is 95-120Mpa, and the elongation can reach more than 3.0%. Compared with the finished product produced by the aluminum ingot casting and rolling method, the invention has the advantages of equivalent mechanical property, pinhole number and corrosion resistance, reasonable utilization of waste materials for production and capability of meeting the requirements of customers. The product has short process flow and low cost, and realizes the repeated recycling of waste materials, thereby having obvious promotion effects on energy conservation and emission reduction of the whole market, green production and the like.

Detailed Description

For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.

1. Smelting, namely preparing alloy raw materials by taking the mixture ratio of 0.65 percent of Si, 0.85 percent of Fe, 0.035 percent of Cu and the balance of aluminum as basic components;

2. melting the raw materials, wherein the melting temperature is in the range of 735-755 ℃, performing melt refining treatment, pouring the melt into a standing furnace at 740-760 ℃, standing and preserving heat, wherein the temperature of the standing furnace is 730-750 ℃; then cast-rolling to obtain 6.0-7.0mm cast-rolled coils;

3. roughly rolling the cast-rolled mother coil according to the thickness of 7.0 mm-4.2 mm-2.7 mm-1.8 mm, carrying out homogenization annealing, heating to 265 ℃ within 4h, continuously heating to 550 ℃ within 2h, preserving heat for 8h, then cooling to 480 ℃ and preserving heat for 4 h;

5. after the edge cutting, the material roll is rolled to be 0.018 +/-0.0009 mm in thickness in the finished product pass by 0.26-0.14-0.075-0.036-0.018 +/-0.0009 mm, and then is cut to be the finished product width;

6. annealing the finished product in a coil with the diameter of 0.018 +/-0.0009 mm for a finished product pass, heating to 230 ℃ for 5 hours, preserving heat for 9 hours, then cooling to 200 ℃ and preserving heat for 2 hours, and then cooling and discharging.

The tensile strength of the finished product prepared by the method is 95-120Mpa, and the elongation can reach more than 3.0%. Compared with the finished product produced by the aluminum ingot casting and rolling method, the invention has the advantages of equivalent mechanical property, pinhole number and corrosion resistance, reasonable utilization of waste materials for production and capability of meeting the requirements of customers. The 8011 single-zero foil blank is produced by casting and rolling waste materials, the repeated recycling of aluminum is realized, and the method has the advantages of obvious economic advantages, effective resource saving, environmental protection and the like and is supported by government policies. The product has short process flow and low cost, realizes the repeated recycling of waste materials, and has obvious promotion effects on energy conservation and emission reduction of the whole market, green production and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.