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Aluminium foil produced by utilization of cast-rolled slabs and used for dynamic functional materials and preparing method thereof

A functional material, casting and rolling technology, applied in the direction of electrode carrier/collector, etc., can solve the problems of insufficient cleanliness of surface quality, uneven surface roughness, insufficient compactness, etc., to prevent coating adhesion from being reduced and unusable, Eliminates the effects of aggregation and grain fineness

Active Publication Date: 2015-05-13
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

The aluminum foil used by lithium battery manufacturers for high-end power functional materials mainly imports hot-rolled slabs from abroad to produce aluminum foil for power functional materials. Compared with foreign countries, my country's aluminum foil for high-end power functional materials is mainly due to its softer strength and elongation. Low quality, insufficient compactness, uneven surface roughness, insufficient cleanliness of surface quality and other quality problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for manufacturing an aluminum foil for power functional materials produced by a cast-rolled slab, comprising the following steps:

[0038] (1) Melting, casting and rolling: according to the mass percentage of chemical composition, Al: 99.35%, Fe: 0.38%, Si: 0.12%, Cu; 0.065%, Ti: 0.018%, Sr: 0.0085% and the remaining impurities After weighing the raw materials, they are smelted, cast and rolled into billets, and the thickness of the billets is 6.82mm. During the smelting process, it is necessary to achieve degassing and slag removal, and stir fully and evenly. The addition of special treatment medium Sr can reduce the melt The supersaturated solid solution precipitates during solidification, and can obtain a metallurgical structure with uniform and fine grains, ensuring the quality of the melt and the effect of uniform composition modification, and the impurities in the above-mentioned Mn≤0.005%, Mg≤0.005%, Zn≤ 0.0075%, at this time, the temperature of the guid...

Embodiment 2

[0044] A method for manufacturing an aluminum foil for power functional materials produced by a cast-rolled slab, comprising the following steps:

[0045] (1) Melting, casting and rolling: according to the mass percentage of chemical composition, Al: 99.35%, Fe: 0.47%, Si: 0.145%, Cu: 0.083%, Ti: 0.021%, Sr: 0.011% and the remaining impurities After weighing the raw materials, they are smelted, cast and rolled into billets, and the thickness of the billets is 6.82mm. During the smelting process, it is necessary to achieve degassing and slag removal, and stir fully and evenly. The addition of special treatment medium Sr can reduce the melt The supersaturated solid solution precipitates during solidification, and can obtain a metallurgical structure with uniform and fine grains, ensuring the quality of the melt and the effect of uniform composition modification, and the impurities in the above-mentioned Mn≤0.005%, Mg≤0.005%, Zn≤ 0.005%, at this time, the temperature of the guide...

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Abstract

The invention discloses aluminium foil produced by utilization of cast-rolled slabs and used for dynamic functional materials. The aluminium foil comprises following chemical components: more than 99.30% of Al, 0.30-0.5% of Fe, 0.05-0.2% of Si, 0.045-0.1% of Cu, 0.015-0.025% of Ti and 0.006-0.015% of Sr, with the balance being impurities, and the sum of mass percentages of the Al, the Fe, the Si, the Cu, the Ti, the Sr and the impurities being 100%. A preparing method of the aluminium foil is also disclosed. The aluminium foil prepared by the method has advantages of strength, high elongation percentages, good compactness, uniform surface roughness and high surface cleanliness.

Description

technical field [0001] The invention relates to an aluminum foil for power functional materials produced by casting and rolling slabs and a preparation method thereof, belonging to the technical field of metal materials and processing methods thereof. Background technique [0002] In China's "Twelfth Five-Year Plan", new energy vehicles are one of the seven emerging industries, and have become an important breakthrough for the country to revitalize the economy and transform the industrial structure. The development of new energy vehicles is an important part of the low-carbon economy, which plays an important role in alleviating the contradiction between energy supply and demand, improving the environment, and promoting sustainable economic development. The development of the new energy vehicle industry is not only related to national energy security, people's livelihood and environmental protection, but also the fate of the development of my country's automobile industry. N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00H01M4/66
CPCY02E60/10
Inventor 万宝伟董则防莘明哲张莉陆佳吴保剑
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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