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Copper-aluminum composite plate strip as well as preparation method and device thereof

A technology of copper-aluminum composite board and copper strip, which is applied in the field of material processing, can solve the difficult problems of copper-aluminum oxidation, high gas content and slag content in aluminum board, and unstable composite strength, etc., to reduce temperature, improve quality, and roll The effect of force reduction

Active Publication Date: 2022-01-14
陈正华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The production process of copper-aluminum composite materials in the prior art is mainly divided into solid-solid composite and solid-liquid composite, solid-solid composite is difficult to solve the oxidation problem between copper and aluminum, composite Unstable strength
When solid-liquid compounding produces high-proportion copper-aluminum composite strips, in order to achieve metallurgical compounding of the two materials, it is necessary to increase the temperature of the aluminum liquid and the rolling force, and excessive rolling force will easily cause poor plate shape and easy damage to the equipment. And other problems, the temperature of the aluminum liquid is too high, which will easily lead to high gas content and slag content in the aluminum plate, thus burying quality hidden dangers

Method used

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  • Copper-aluminum composite plate strip as well as preparation method and device thereof
  • Copper-aluminum composite plate strip as well as preparation method and device thereof

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preparation example Construction

[0023] The embodiment of the present invention also provides a method for preparing a copper-aluminum composite strip, which includes: when the copper strip and molten aluminum are extruded by casting rolls to form a copper-aluminum composite strip, according to the copper layer of the copper-aluminum composite strip to be obtained Proportion Control the temperature of the upper roll and the lower roll separately; and apply a predetermined rolling force to the upper roll and the lower roll to perform compound rolling on the copper strip and molten aluminum to obtain a copper-aluminum composite strip with a predetermined composite strength .

[0024] In a specific application, the temperature of the upper roll and the temperature of the lower roll are controlled separately, including: controlling the temperature of the upper roll by controlling the temperature and / or water pressure of the water flowing through the upper roll through a first regulating device connected to the upp...

example 1

[0030] Copper layer thickness: 3.0mm-4.0mm, width 600mm, composite board thickness: 6.0mm-8.0mm, copper layer ratio: 37.5%-66.0%; molten aluminum pouring temperature: 690°C-710°C, composite speed: 1000mm / min -1500mm / min, top roll water temperature: 40°C-50°C, top roll water pressure: 0.2MPa-0.3MPa; bottom roll water temperature: 20-25°C; bottom roll water pressure: 0.4-0.45MPa; rolling force 1300- 1800 tons, complete the production of copper-aluminum composite strips, the ratio of copper and aluminum reaches 50%, the composite strength is higher than or equal to 60N / mm, and the surface quality is good.

example 2

[0032] Copper layer thickness 5.0mm-5.5mm, width: 600mm; composite board thickness: 7.0mm-8.0mm, copper layer ratio 62.5%-75%; aluminum liquid pouring temperature: 700℃-720℃, composite speed: 1500mm / min- 2000mm / min, top roll water temperature: 75°C-80°C, top roll water pressure: 0.20MPa-0.25MPa, bottom roll water temperature: 25°C-30°C, bottom roll water pressure: 0.35MPa-0.4MPa; rolling force 1500 -2500 tons; composite strength greater than or equal to 50N / mm.

[0033] Based on the above-mentioned production process and equipment, the embodiment of the present invention can produce copper-aluminum composite strips with different thicknesses that meet the composite strength requirements, and can ensure product quality control. These copper-aluminum composite strips can be used as busbars and other components of battery components.

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Abstract

The invention discloses a copper-aluminum composite plate strip as well as a preparation method and a device thereof. The preparation method of the copper-aluminum composite plate strip comprises the following steps: respectively controlling the temperature of an upper roller and the temperature of a lower roller according to a copper layer ratio of a copper-aluminum composite plate strip to obtained in a process of extruding a copper strip and molten aluminum through the upper roller and the lower roller of a casting roller to form the copper-aluminum composite plate strip; applying preset rolling force to the upper roller and the lower roller so as to carry out composite rolling on the copper strip and the molten aluminum, and obtaining the copper-aluminum composite plate strip with the preset composite strength. The preparation method can be used for preparing high-quality copper-aluminum composite plate strips with different copper thickness ratios.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a copper-aluminum composite strip and a preparation method and device thereof. Background technique [0002] New energy vehicles have higher and higher demands on battery fast charging and battery capacity, so that when single power batteries form battery components, there are more and more copper-aluminum composite connection structures, especially for thicker copper-aluminum composite strips. bigger and bigger. [0003] The production process of copper-aluminum composite materials in the prior art is mainly divided into solid-solid composite and solid-liquid composite. Solid-solid composite is difficult to solve the oxidation problem between copper and aluminum, and the composite strength is unstable. When solid-liquid compounding produces high-proportion copper-aluminum composite strips, in order to achieve metallurgical compounding of the two materials, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06B22D11/22
CPCB22D11/0622B22D11/007B22D11/0682B22D11/22Y02E60/10
Inventor 陈正华
Owner 陈正华
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