Manufacturing method of copper-clad aluminum busbar

A production method and technology of copper-clad aluminum strips, applied in the direction of manufacturing tools, cable/conductor manufacturing, other manufacturing equipment/tools, etc., can solve the problems of interface cracking, lower yield and electrical conductivity, and high billet cleanliness requirements.

Inactive Publication Date: 2007-10-24
ZIRUIDA NEW MATERIAL SCI TECH DEV DALIAN
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  • Abstract
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Problems solved by technology

The core requirement of copper-clad aluminum wire forming is to ensure reliable bonding between metals. The problems of the above-mentioned various processes are: high requirements on the cleanliness of the billet, low overall processing rate from wire billet to finished product, and multiple annealing required , due to the large difference in mechanical properties between copper and aluminum, it is easy to cause defects such as local cracking of the interface, fracture of the cladding layer and the core material during the drawing process at a small processing rate, resulting in a decrease in yield and electrical conductivity

Method used

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Embodiment Construction

[0007] A production method for manufacturing a copper-clad aluminum bar, the process steps are as follows: ① Prefabricate the cladding material copper into a copper tube with uniform wall thickness, and the copper tube can be directly cast into shape; or roll the copper strip through a series of rollers into a tube shape, and then weld the copper tube longitudinal seam into shape; ② clean the inner wall of the copper tube generated in step ①, remove the oil stain and oxide layer on its surface, the specific operation is as follows: soak the metal with 15% acidic solution, and then use Rinse with clean water, dry and scrub with a steel brush; ③ Coat the inner wall of the copper tube with a metal protective layer to prevent metal compounding; ④ Pre-treat the copper tube and heat it to 500-700 °C; Under the protection of inert gas, pour the molten metal of the core material aluminum into the copper tube, and the pouring temperature is the melting point of aluminum; ⑥The above-ment...

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Abstract

The disclosed manufacture method for Cu-covered-Al pipeline product comprises: 1. pre-preparing the copper into pipe with uniform wall thickness; 2. cleaning the pipe inner wall to remove its oil pollution and oxidation layer; 3. coating a protective layer on the inner wall of copper pipe; 4. heating to 500-700Deg for pre-processing; 5. with the protection of inert gas, casting molten Al into the pipe inside; and 6. rolling and drawing. This invention overcomes the defects in traditional techniques, and improves product stability.

Description

Technical field: [0001] The invention relates to a production method for manufacturing bimetallic composite materials, in particular to a production method for copper-clad aluminum bars. Background technique: [0002] Copper-clad aluminum bar is a new type of bimetal composite material, which is economical, applicable, green and environmentally friendly, and saves copper resources. The product is manufactured with unique technology and has good mechanical and electrical properties. Widely used in electric power, communication and other backup power combination battery connection, bus duct, transformer winding, high and low voltage switchgear, high and medium frequency heating equipment, substation room entry connection, crane trolley line, transformer and other industries. At present, there are several methods for producing copper-clad aluminum bars: ①The earlier method used in industrial production is the aluminum wire copper plating method, which is a method of electropla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00B23P23/04
Inventor 吴运忠
Owner ZIRUIDA NEW MATERIAL SCI TECH DEV DALIAN
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