A kind of preparation technology of copper-clad aluminum composite V-shaped wire

Abstract

The invention provides a preparation process of a copper-clad aluminum composite V-shaped wire, comprising the following steps: (1) Rolling: pass rolling for 11 times, rolling speed of 10-40 m / min, flat rolling, vertical rolling Cycle in sequence, the deformation of each pass is 10-40%, the total deformation of the rolled section is 70-80%, and the size is close to 20mm × 15mm; (2) Drawing: the drawing speed is controlled to 2-35 m / min, Four passes are drawn, and the cross-sectional size after the first pass is about 20mm×15mm, and the area reduction of the next three passes is controlled to 15-25%, and the total area reduction of the four passes is controlled to 40- 50%; (3) Flat rolling: one pass of flat rolling, the rolling speed is 10-40m / min, and the reduction is 1-3mm; (4), Special-shaped (V-shaped) drawing: the drawing speed is controlled to 2 ~35 m / min, the area reduction rate of a single pass is 10-20%, to the qualified size. The copper-clad aluminum composite V-shaped wire prepared by the invention has the advantages of adjustable copper layer thickness, high bonding strength, smooth surface, high dimensional accuracy, satisfactory mechanical properties and high process efficiency.

Description

technical field [0001] The invention belongs to the field of bimetallic composite materials, and in particular relates to a preparation process of a copper-clad aluminum composite V-shaped wire. Background technique [0002] At present, the main production methods of copper-clad aluminum composite wire at home and abroad include rolling crimping method, cladding welding method, hydrostatic extrusion method and so on. The problems of the cladding welding method and the rolling crimping method are: long production process, complicated process, high cost, thin copper layer of the product, and low bonding strength; especially for some conductor materials with special cross-sectional shapes, the two methods It is difficult to produce composite special-shaped wires with non-circular cross-sectional shapes (such as flat, special-shaped, etc.). The hydrostatic extrusion method has the disadvantages of large equipment investment, complex process, and low production efficiency. The ...

AI Technical Summary

Problems solved by technology

The problems of the cladding welding method and the rolling crimping method are: long production process, complicated process, high cost, thin copper layer of the product, and low bonding strength; especially for some conductor materials with special cross-sectional shapes, the two methods It is difficult to produce composite special-shaped wires with non-circular cross-sectional shapes (such as flat, special-shaped, etc.)

The hydrostatic extrusion method has the disadvantages of large equipment investment, complex process, and low production efficiency.

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