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Aluminum alloy rare earth refiner and manufacturing method of aluminum alloy material for blade battery shell

A technology of aluminum alloy materials and manufacturing methods, which is applied in the field of aluminum alloy rare earth refiner and aluminum alloy material manufacturing for blade battery shells, can solve the problems of unguaranteed plate shape accuracy and surface quality, low strength, and failure to meet the requirements of blade battery shells. Body material performance requirements and other issues

Inactive Publication Date: 2021-11-05
JIANGSU ALCHA ALUMINUM CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the O-state hot-rolled aluminum alloy plate and strip used for the conventional battery case has a high elongation, but its strength is generally low, and the shape accuracy and surface quality are not guaranteed, which cannot meet the performance requirements of the blade battery case material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An aluminum alloy material for a blade battery case, comprising the following components in weight percentage: Fe: 0.40%, Si: 0.15%, Cu: 0.10%, Mn: 1.50%, Mg: ≤0.1%, Zn≤0.1 %, RE: 0.1%, and the rest is Al. The manufacturing method includes the following steps: (1) According to the composition of the alloy, the raw materials of each element are added into a melting furnace for melting and refining. The melting temperature is 735°C, the refining temperature is 750°C, and the refining time is 15 minutes. Add 1% aluminum alloy rare earth refining agent A of the total mass of raw materials, and 0.07% Al-B boronizing agent of the total mass of raw materials (B accounts for 50% by mass); (2) the above-mentioned smelted and refined alloy Add it into the continuous casting and rolling machine for continuous casting and rolling, the casting and rolling temperature is 660°C, the length of the casting and rolling zone is 41mm, the casting and rolling speed is 0.6m / min, and the thic...

Embodiment 2

[0039] An aluminum alloy material for a blade battery case, comprising the following components in weight percentage: Fe: 0.85%, Si: 0.55%, Cu: 0.30%, Mn: 1.85%, Mg: ≤0.1%, Zn≤0.1 %, RE: 0.24%, and the rest is Al. The manufacturing method includes the following steps: (1) According to the composition of the alloy, the raw materials of each element are added into a melting furnace for melting and refining. The melting temperature is 755°C, the refining temperature is 745°C, and the refining time is 18 minutes. Add 1.6% aluminum alloy rare earth refiner B of the total mass of raw materials, and 0.15% Al-B boronizing agent of the total mass of raw materials (the mass percentage of B is 25%); (2) the above-mentioned smelted and refined alloy Add it into the continuous casting and rolling machine for continuous casting and rolling, the casting and rolling temperature is 685°C, the length of the casting and rolling zone is 44mm, the casting and rolling speed is 0.65m / min, and the th...

Embodiment 3

[0042] An aluminum alloy material for a blade battery case, comprising the following components in weight percentage: Fe: 0.55%, Si: 0.35%, Cu: 0.22%, Mn: 1.72%, Mg: ≤0.1%, Zn≤0.1 %, RE: 0.20%, and the rest is Al. The manufacturing method includes the following steps: (1) According to the composition of the alloy, the raw materials of each element are added into a melting furnace for melting and refining. The melting temperature is 745°C, the refining temperature is 740°C, and the refining time is 20 minutes. Add 2% aluminum alloy rare earth refining agent A of the total mass of raw materials, and 0.1% Al-B boronizing agent of the total mass of raw materials (the mass percentage of B is 40%); (2) the alloy after the above smelting and refining Add it into the continuous casting and rolling machine for continuous casting and rolling, the casting and rolling temperature is 675°C, the length of the casting and rolling zone is 42mm, the casting and rolling speed is 0.62m / min, and ...

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Abstract

The invention discloses an aluminum alloy rare earth refiner which comprises the following components including, by mass, less than or equal to 0.25% of Fe, less than or equal to 0.25% of Si, 8%-15% of RE and the balance Al, wherein the RE comprises including, by mass, 30%-40% of Ce and 60%-70% of La. The invention also discloses a method for producing the aluminum alloy rare earth refiner through a cast rolling process. The invention further discloses a manufacturing method of an aluminum alloy material for a blade battery shell. Smelting raw materials comprise the following components including, by mass, less than or equal to 1.0% of Fe, less than or equal to 0.6% of Si, 0.05%-0.4% of Cu, 1.0%-2.0% of Mn, less than or equal to 0.1% of Mg, less than or equal to 0.1% of Zn, 0.1%-0.3% of RE and the balance Al; and the aluminum alloy rare earth refiner and a boronizing agent are added in sequence during smelting. According to the aluminum alloy rare earth refiner, the strength of the aluminum alloy material can be improved, the influence of Ti on the electric conductivity is avoided, and the aluminum alloy material for the blade battery shell in an H18 state has high yield strength and tensile strength and is suitable for high-frequency welding production of the blade battery shell.

Description

technical field [0001] The invention relates to an aluminum alloy refiner and a method for manufacturing an aluminum alloy material, in particular to a method for manufacturing an aluminum alloy rare earth refiner and an aluminum alloy material for a blade battery case. Background technique [0002] Under the development trend of global economic green and environmental protection, the development of new energy automobile industry has become the clear strategic direction of all countries in the world. On the one hand, the blade battery has the advantages of safety and stability of lithium iron phosphate. On the other hand, the energy density of the volume ratio system has been improved by improving the shape and arrangement. At the same time, it has the characteristics of high safety, long battery life, and long life. Industry change. The "high-precision" demand for aluminum foil in the high-performance power battery industry makes its performance requirements for aluminum e...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C1/02C22C21/00C22F1/04C22F1/02C22C1/06B22D11/06
CPCC22C1/03C22C1/026C22C21/00C22F1/04C22F1/02C22C1/06B22D11/003B22D11/06
Inventor 张全成张敏达章建华陆伟良袁婷吴永新潘梦洁孙文兵刘丹周海雄
Owner JIANGSU ALCHA ALUMINUM CO LTD
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