High-strength copper-clad copper wire and preparation method thereof

Abstract

The invention relates to the technical field of metal materials, and discloses a high-strength copper-clad copper wire and a preparation method thereof. The high-strength copper-clad copper wire comprises a brass rod and a copper belt wrapping the outer surface of the brass rod. The preparation method comprises the following steps that S1, the brass rod is straightened, polished, cleaned and dried; S2, the copper belt is cut and wound; S3, the copper belt and the brass rod are wrapped, welded, polished and straightened; S4, bright recrystallization annealing is carried out on the copper-clad copper rod; S5, the copper-clad copper rod is drawn; S6, stress relief annealing is carried out on the copper-clad copper wire; and S7, pickling and passivating is carried out on the copper-clad copperwire. According to the method, the copper-clad copper rod is subjected to bright recrystallization annealing treatment and stress relief annealing treatment, recrystallization can be recovered, workhardening can be eliminated, hardness can be reduced, plasticity can be improved, the copper-clad copper wire is subjected to stress relief annealing treatment, residual stress generated in the cold deformation and machining process can be eliminated, self-cracking can be prevented, the size and performance can be stabilized, and the strength of the copper-clad copper wire is improved.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a high-strength copper-clad copper wire and a preparation method thereof. Background technique [0002] Copper-clad copper wire is a new substitute material for bare copper wire and tinned copper wire. It has the characteristics of light weight, high strength, corrosion resistance, and low price. It can be used as communication cables, signal cables, and shielded cables. The conductor and shielding materials of coaxial cables and data transmission cables do not affect the test data. [0003] The Chinese patent discloses a tinned copper-clad brass wire and its production method and tinning equipment (authorized notification number CN103325439A). Compared with the asbestos used in the existing technology, the patented technology simplifies The tinning step is completed, and the coating adhesion and continuity are better, and the thickness is more uniform. The obtained tinn...

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Problems solved by technology

[0003] The Chinese patent discloses a tinned copper-clad brass wire and its production method and tinning equipment (authorized notification number CN103325439A). Compared with the asbestos used in the existing technology, the patented technology simplifies The tinning step is completed, and the coating adhesion and continuity are better, and the thickness is more uniform. The obtained tinned copper-clad copper wire has a better appearance and brightness, but its overall strength is not high. Self-cracking, poor stability, and prone to failure during use

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