Copper-clad aluminum flat wire production process and production line thereof

Abstract

The invention relates to a copper-clad aluminum flat wire production process and a production line thereof. A copper-clad aluminum flat wire production process specifically comprises the following steps that S1, cleaning is conducted, specifically, an aluminum material roll and a copper material roll are arranged, aluminum materials are taken out from the aluminum material roll, and copper materials are taken out from the copper material roll to be subjected to surface cleaning; S2, extruding is conducted, and the aluminum material is extruded into an aluminum rod blank; S3, coating is conducted, and the copper material coats the surface of the aluminum rod blank; S4, welding is conducted, specifically, the copper material wrapping the surface of the aluminum rod blank is folded and welded, and a wire blank is obtained; S5, heating is conducted, and the wire rod blank is heated and softened; S6, rolling is conducted, specifically, the heated and softened wire rod blank is continuously rolled; S7, cooling is conducted, and the copper-clad aluminum material raw material is subjected to water curtain cooling; S8, drawing is conducted, specifically, the cooled copper-clad aluminum raw materials are continuously drawn to be adjusted into row materials with different calibers; S9, annealing is conducted, and vacuum annealing cooling is conducted on the arranged material; and S10, inspecting and packaging are conducted.

Description

technical field [0001] The invention relates to a copper-clad aluminum flat wire production process and a production line thereof. Background technique [0002] Copper-clad aluminum flat wire (bar) is a kind of bimetal with aluminum as the base and copper on the outer layer to form a permanent interatomic metallurgical bond between them. The surface is bright, round and free of defects. It is a new type of conductor material that combines the high-quality and stable electrical conductivity of copper with the advantages of low cost and light weight of aluminum in a metallurgical combination. Copper-clad aluminum flat wires (bars) are widely used in winding barrels of wind turbines, high-power power generation equipment, high-speed rail power transmission and distribution equipment, etc., which require long service life, and the joint between copper and aluminum requires Tight bonding avoids galvanic corrosion. [0003] The key technical indicators of this new type of conduc...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the inner core aluminum rods in copper-clad aluminum flat wires (rows) are usually purchased ready-made aluminum rods. This kind of pre-produced aluminum rods will inevitably have Oxidation or pollution, etc., even if the general cleaning equipment is used for cleaning, the above phenomena cannot be completely removed, and the existing production processes are separately coated, rolled, drawn, etc., so that the aluminum rods processed separately Oil stains and oxidation are inevitable on the surface

Moreover, because the surface cleanliness is not enough, the cladding strength and cladding rate between copper and aluminum are not enough, and air enters between copper and aluminum, resulting in electrochemical corrosion, and copper and aluminum will separate.

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