High-strength electro-conductive copper alloy wire and production method thereof

Abstract

The special high-strength Cu alloy cable or wire as the alternate material for Cu-Cd alloy fit to drag, compact, kink and superheat frequently comprises: 0.2-0.6% Mg for solution strengthening, 0.4~0.8% Ni and 0.1~0.2% Si to form Ni2Si intermetallic compound for precipitation hardening, 0.08~0.2% Zr to fine base, promote dispersion, improve thermal resistance and stabilize Mg; and other as Cu, and is manufactured by dissolving, depositing and cold processing.

Description

technical field [0001] The invention belongs to the technical field of copper alloys, and relates to a high-strength copper alloy conductive wire material and a production method. Background technique [0002] Copper and copper alloys have good conductivity and are the main electrical carrier materials in the fields of electricity, electronics and communications. The materials usually used for wires or cables are mainly pure copper, such as T 2 、TU 1 、TU 2 And TUP, this kind of material has excellent electrical conductivity, can carry out plastic processing with large deformation under normal temperature conditions, and obtain the required size and performance. The tensile strength and heat resistance of the above-mentioned materials are low. While meeting the requirements of electrical conductivity, they cannot meet the requirements of large stress and high-temperature operations. Therefore, when cables or wires are required to be frequently Copper-cadmium (Cu-Cd) alloy ...

AI Technical Summary

Problems solved by technology

The tensile strength and heat resistance of the above-mentioned materials are low. While meeting the requirements of electrical conductivity, they cannot meet the requirements of large stress and high-temperature operations. Therefore, when cables or wires are required to be frequently Copper-cadmium (Cu-Cd) alloy wires with excellent comprehensive performance are used under severe conditions such as overheating, but the cadmium vapor generated during the casting production process of Cu-Cd alloy wires has serious pollution to the human body and the environment, so a large number of The use of Cu-Cd alloy wire will pose a great hazard to environmental protection

[0003] Due to the large market demand for Cu-Cd alloy wires, in order to completely solve the pollution problem of the production of this material, research on substitute materials for Cu-Cd alloy wires has been widely carried out in the field of material science. There are Cu-Fe-P, Cu-Mg, Cu-Sn, Cu-Sn-P and other alloys, but the electrical conductivity and mechanical properties of the first three alloy wires are slightly lower than Cu-Cd alloy wires, Cu-Sn-P The strength of alloy wire is equivalent to that of Cu-Cd alloy, but the electrical conductivity is very low, so these materials are obviously insufficient as Cu-Cd alloy substitute materials

[0004] Commonly used high-strength conductive materials mainly adopt precipitation strengthening process, such as Cu-Co-Be, Cu-Ni-Si, Cu-Cr-Zr, etc. The strength and conductivity of these materials have reached or exceeded the level of Cu-Cd alloys, but as The wire size required for the production of special cables is Ф0.1mm, which means that the deformation rate of the material during cold processing is very high, and the plasticity of the aforementioned materials cannot meet the forming process requirements of special cables