Aluminum alloy wire harness for light automobile and preparation method thereof

Abstract

The invention discloses an aluminum alloy wire harness for a light automobile. The aluminum alloy wire harness for the light automobile comprises a conductor wire core and an outer layer insulating layer, wherein the conductor wire core comprises the following components of 0.2wt%-0.4wt% of V, 0.01wt%-0.3wt% of Cu+Mg, 0.001wt%-0.01wt% of Sb, 0.01wt%-0.05wt% of Ti, 0.001wt%-0.002wt% of Ag+F, 0.001wt%-0.003wt% of Zr, 0.1wt%-0.3wt% of RE, and the balance is Al; the alloy does not contain Si and Fe; Ce and La are 50% of the total amount of the RE or more; and in a wire drawing process, the conductor wire core is firstly subject to dipping in a mixed solution of potassium fluoborate and polydimethylsiloxane, intermediate annealing in a nitrogen atmosphere containing 5% oxygen concentration is carried out, and then wire drawing is carried out. According to the aluminum alloy wire harness and the preparation method, V, Ti, Ag, F and Zr are adopted as reinforcing systems and secondary smeltingis adopted, so that the elongation at break and the tensile strength of the aluminum alloy wire harness for the light automobile are improved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy wiring harnesses, in particular to an aluminum alloy wiring harness for light automobiles and a preparation method thereof. Background technique [0002] At present, the automobile industry is developing rapidly in the world. The automobile industry has not only become the pillar industry of developed countries such as the United States and Japan, but also some developing countries including China. As one of the important supporting products of automobiles, the automobile line, no matter It has a good market prospect in terms of scale output and variety demand. [0003] At the same time, automobiles are developing in the direction of miniaturization and light weight, the control circuits of various electronic devices are increasing, and the wiring positions in motor vehicles are increasing. Therefore, in order to reduce weight, attempts have been made to use aluminum electric wires whose conductors ...

AI Technical Summary

Problems solved by technology

The present invention can improve the mechanical strength and tensile properties of the alloy by adding Fe element, Fe can also significantly improve the high temperature creep resistance, and improve the fatigue resistance of the alloy, the addition of Cu+Mg can improve the strength and high temperature of the alloy creep performance, and can improve fatigue resistance, the addition of Sb can improve the yield limit of the alloy, and at the same time make the alloy have superplasticity, which is conducive to being drawn into very thin alloy wires, but the tensile strength of the aluminum alloy prepared by the invention, Elongation at break is unsatisfactory