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Rolling method and apparatus for copper-aluminium double-face composite board

A composite plate, double-sided technology, used in workpiece surface treatment equipment, metal rolling, metal rolling, etc., can solve problems such as fusing at joints

Inactive Publication Date: 2005-02-23
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

The material difference between them can easily cause a fuse accident at the joint

Method used

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  • Rolling method and apparatus for copper-aluminium double-face composite board
  • Rolling method and apparatus for copper-aluminium double-face composite board
  • Rolling method and apparatus for copper-aluminium double-face composite board

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Embodiment Construction

[0046] First, a Cu: 99.9% copper strip with a thickness of 0.8 mm and a length of 1000 mm and an Al: 99.8% aluminum plate with a thickness of 18 mm, a width of 80 mm and a length of 1000 mm were subjected to preliminary heat treatment. Copper was kept at 330°C for 1.5 hours and aluminum at 300°C for 1.5 hours. After the preparatory heat treatment, the copper strip is pickled. The formula of the acid solution is to add H to one liter of water. 2 SO 4 ≥93% concentrated sulfuric acid 115g, HCl≥30% concentrated hydrochloric acid 100g, HF≥24% hydrofluoric acid 15g, HNO 3 ≥90% concentrated nitric acid 110 grams, soak the copper strip at room temperature for 30 minutes and then wash it with water to remove the residual acid.

[0047] The aluminum plate is washed with alkali, and the formula of the alkali solution is to add 100 grams of solid sodium hydroxide, 105 grams of sodium carbonate, and 110 grams of sodium bicarbonate to one liter of water, soak the aluminum plate at room te...

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Abstract

A technology for rolling the composite Cu-Al plate includes such steps as preheating the copper band and aluminium plate respectively at different temp for different time, acid washing of copper band, alkali washing of aluminium plate, brushing surface by steel wire brush, rolling by a pair of upper concave roller and lower convex roller, annealing in inertial gas, and straightening.

Description

technical field [0001] The invention belongs to the technical field of methods and equipment for rolling multilayer metal plates, and in particular relates to a rolling method and rolling equipment for copper-aluminum double-sided composite plates. Background technique [0002] Nowadays, with the development of the electric power industry and the progress of the electrical industry, there are more and more high-power and high-current electrical equipment, and the supporting electronic control equipment is also increasing. Many of the electric wires in the current large-scale electrical equipment are pure aluminum busbars, while the electric wires of the supporting electric control equipment are mostly pure copper busbars. The material difference between them can easily cause a fuse accident at the joint. To transform the existing situation, the pure aluminum bus bar can be replaced with a pure copper bus bar, which will eliminate the fusing accident at the joint. But the t...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B27/02B21B45/02B21B47/00B21D1/00
Inventor 袁晓光盛立远于宝义黄宏军
Owner SHENYANG POLYTECHNIC UNIV
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