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Method for producing 8021 aluminum alloy for a lithium battery by casting method

A technology of aluminum alloy and lithium battery, which is applied in the field of aluminum material processing, can solve the problems of poor puncture resistance and stability, poor cold stamping formability, complicated manufacturing process, etc., and achieve the effect of simple and convenient method, improved plasticity, and uniform chemical composition

Inactive Publication Date: 2020-06-19
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing 8021 aluminum alloys for lithium batteries and their manufacturing methods have the following problems: the existing soft-wrapped foil blanks for aluminum-plastic films have complex manufacturing processes, poor cold stamping formability, poor puncture resistance and poor stability, resulting in poor performance of the finished product , easy to crack and puncture; therefore, it is urgent to provide a kind of 8021 aluminum alloy for lithium batteries with good folding resistance, stamping resistance and sealing performance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An 8021 aluminum alloy for a lithium battery, the mass percent of each element in the aluminum alloy is as follows: Fe=1.68%, Si0.21%, Cu0.05%, Mn0.05%, Mg0.01%, Cr<0.05% , Zn<0.05%, Ti0.042%, and the rest is Al.

[0025] The preparation method of the above-mentioned 8021 aluminum alloy for the lithium battery comprises the following steps:

[0026] In the smelting furnace, the ingredients are calculated according to the above ingredients. The total amount of covalently added aluminum ingots and intermediate alloys is 25t. All raw materials are smelted at a furnace temperature of 900°C. After 4.5 hours of smelting, the aluminum hydration level and the temperature of the molten aluminum reach At 692°C, carry out slag refining, remove surface scum after refining; smelt for 1.8 hours after the temperature of the molten aluminum reaches 724°C, then carry out the first particle refining, continue smelting for 0.8 hours after refining, raise the temperature to 743°C, pour Th...

Embodiment 2

[0031] An 8021 aluminum alloy for a lithium battery, the mass percent of each element in the aluminum alloy is as follows: Fe=1.75%, Si0.23%, Cu0.04%, Mn0.03%, Mg0.01%, Cr<0.05% , Zn<0.05%, Ti0.042%, and the rest is Al.

[0032] The preparation method of the above-mentioned 8021 aluminum alloy for the lithium battery comprises the following steps:

[0033] In the smelting furnace, the ingredients are calculated according to the above ingredients. The total amount of covalently added aluminum ingots and intermediate alloys is 24.3t. All raw materials are smelted at a furnace temperature of 900°C. After 4.2 hours of smelting, the aluminum hydration level and the molten aluminum temperature When it reaches 695°C, carry out slag refining, and remove the surface scum after refining; after smelting for 1.5 hours, that is, the temperature of the aluminum liquid reaches 728°C, then carry out the first particle refining. After refining, continue to smelt for 0.5 hours, and heat up to 7...

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Abstract

The invention relates to a method for producing an 8021 aluminum alloy for a lithium battery by a casting method, and belongs to the field of aluminum processing. The method comprises the steps of batching, smelting, degassing and slag removing, standing, on-line degassing and filtering and casting; and the casting of the alloy component comprises the steps that aluminum alloy melt is smelted according to the chemical components of the 8021 aluminum alloy, then degassing and slag removing are carried out, the hydrogen content is monitored online and is qualified, and the aluminum alloy melt iscast into a metal plate ingot. According to the method for producing the 8021 aluminum alloy for the lithium battery by the casting method, the casting method is simple and convenient, and the 8021 aluminum alloy prepared by the method has good metallurgical performance, thermal processing structure performance and high strength and high toughness.

Description

technical field [0001] The invention belongs to the field of aluminum material processing, and in particular relates to a method for producing 8021 aluminum alloy for lithium batteries by a casting method. Background technique [0002] Aluminum alloy is one of the key materials for lithium batteries. 8021 aluminum alloy for lithium batteries has the characteristics of high plasticity, good corrosion resistance, good electrical and thermal conductivity, good formability and certain strength, and is widely used in the electronics industry. middle. However, the existing 8021 aluminum alloys for lithium batteries and their production methods have the following problems: the production process of the existing soft foil blanks for aluminum-plastic films is complicated, the cold stamping formability is poor, the puncture resistance and stability are poor, resulting in poor performance of the finished product , easy to crack and puncture; therefore, there is an urgent need to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/00
Inventor 左源符豪于海泳黄寿志陈建华王雪云王毓伟杨浩
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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