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Rare earth element containing aluminum material for explosion-proof membrane and manufacturing method of rare earth element containing aluminum material

The invention relates to a rare earth element and manufacturing method technology, which is applied to the aluminum material for explosion-proof film containing rare earth element and its manufacturing field, which can solve the problems of reducing the elongation rate of the material, work hardening, damage to the electrical conductivity and thermal conductivity of the material, etc., and achieves the reduction of the grain size. , the effect of reducing the content of Mn element, reducing the mechanical properties and processing properties

Active Publication Date: 2020-08-07
JIANGSU ALCHA ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, more solid-solution Mn elements not only easily cause work hardening and reduce the elongation of the material, but also greatly damage the electrical and thermal conductivity of the material.

Method used

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  • Rare earth element containing aluminum material for explosion-proof membrane and manufacturing method of rare earth element containing aluminum material
  • Rare earth element containing aluminum material for explosion-proof membrane and manufacturing method of rare earth element containing aluminum material
  • Rare earth element containing aluminum material for explosion-proof membrane and manufacturing method of rare earth element containing aluminum material

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Experimental program
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Effect test

Embodiment 1

[0020] The manufacturing method of the aluminum material for the explosion-proof film containing rare earth elements comprises the following steps: (1) Smelting: adding the raw materials of each element into the smelting furnace according to the composition of the alloy, the composition and mass percentage of the alloy elements are: Fe: 1.15% ; Si: 0.07%; Cu: 0.01%; Mn: 0.49%; Mg: 0.04%, in addition, adding a small amount of rare earth elements, RE: 0.06%. Among them, the complex rare earth is added in the static furnace, and the Al-RE-B master alloy is added in the launder as a refiner to refine the structure of the aluminum alloy. The alloy ingot is obtained by smelting, the melting temperature is 750°C, the refining temperature is 730°C, and the casting temperature is 705°C; (2) homogenization heat treatment: the alloy ingot is subjected to homogenization heat treatment at a temperature of 600°C, and the holding time is 5 hours; (3) hot rolling: after face milling, the alum...

Embodiment 2

[0022] The manufacturing method of the aluminum material for the explosion-proof film containing rare earth elements includes the following steps: (1) Smelting: adding the raw materials of each element into the melting furnace according to the composition of the alloy, the composition and mass percentage of the alloy elements are: Fe: 1.07% ; Si: 0.05%; Cu: 0.01%; Mn: 0.53%; Mg: 0.02%, RE: 0.06%. Among them, the complex rare earth is added in the static furnace, and the Al-RE-B master alloy is added in the launder as a refiner to refine the structure of the aluminum alloy. The alloy ingot is obtained by smelting, the melting temperature is 740°C, the refining temperature is 735°C, and the casting temperature is 715°C; (2) homogenization heat treatment: the alloy ingot is subjected to homogenization heat treatment at a temperature of 610°C, and the holding time is 4 hours; (3) hot rolling: after face milling, the aluminum alloy ingot is hot-rolled, the heating temperature of th...

Embodiment 3

[0024] The manufacturing method of the aluminum material for the explosion-proof film containing rare earth elements includes the following steps: (1) Smelting: adding the raw materials of each element into the melting furnace according to the composition of the alloy, the composition and mass percentage of the alloy elements are: Fe: 1.16% ; Si: 0.07%; Cu: 0.02%; Mn: 0.50%; Mg: 0.01%, adding a small amount of rare earth elements, RE: 0.05%. Among them, the complex rare earth is added in the static furnace, and the Al-RE-B master alloy is added in the launder as a refiner to refine the structure of the aluminum alloy. The alloy ingot is obtained by smelting, the melting temperature is 760°C, the refining temperature is 730°C, and the casting temperature is 720°C; (2) Homogenization heat treatment: the alloy ingot is subjected to homogenization heat treatment at a temperature of 600°C, and the holding time is 6 hours; (3) hot rolling: after face milling, the aluminum alloy ingo...

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Abstract

The invention discloses a rare earth element containing aluminum material for an explosion-proof membrane. The rare earth element containing aluminum material comprises, by mass percent, 1.0%-1.4% ofFe, not larger than 0.25% of Si, not larger than 0.1% of Cu, 0.4%-0.8% of Mn, not larger than 0.5% of Mg, 0.05%-0.07% of RE and the balance Al, wherein Fe+Mn<=2.0%, and Fe / Si is 1.5-4.0. The inventionfurther discloses a manufacturing method of the rare earth element containing aluminum material for the explosion-proof membrane. Composite rare earth is added into a standing furnace, an Al-RE-B intermediate alloy is used as a refining agent to refine the aluminum alloy structure, and homogenizing treatment is carried out before hot rolling. By means of the rare earth element containing aluminummaterial, the mechanical property of the explosion-proof membrane for a lithium battery is effectively improved, excellent electric conductivity is kept, the microstructure is refined, the yield strength of a finished product of the explosion-proof membrane is larger than or equal to 50 MPa, meanwhile, ductility can reach 40% or above, and electric conductivity is 53.5%IACS or above.

Description

technical field [0001] The invention relates to an aluminum foil for an explosion-proof membrane and a manufacturing method thereof, in particular to an aluminum material for an explosion-proof membrane containing rare earth elements and a manufacturing method thereof. Background technique [0002] The top cover of the lithium battery in the power battery pack of a new energy vehicle is generally equipped with an explosion-proof membrane structure to ensure the safety of the battery during multiple rapid charge and discharge processes. The aluminum material used for the explosion-proof film needs to withstand the internal pressure change during the charging and discharging process of the battery, and requires a certain yield strength. At the same time, the explosion-proof film is processed by stamping, which requires aluminum foil materials with excellent formability, high elongation and fine grain size. In addition, due to the special performance requirements of aluminum f...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04
CPCC22C21/00C22C1/026C22C1/03C22C1/06C22F1/04
Inventor 张全成朱振东李健章建华吴永新赵丰刚孙占宇王鹏郑于炼黄守君
Owner JIANGSU ALCHA ALUMINUM
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