Aluminium alloy conductor material for bus duct and preparation method thereof

Abstract

The invention discloses an aluminium alloy conductor material for a bus duct and a preparation method thereof and belongs to the technical field of electrical engineering new materials. The aluminiumalloy conductor material for the bus duct comprises the following elements of 0.08-0.28% of Si, 0.17-0.47% of Fe, 0.06-0.25% of Mg, 0.17-0.47% of Ni, 0.03-0.40% of Zn, 0.01-0.05% of B and the balanceof aluminium and inevitable other impurities according to the mass percentage, wherein the mass ratio of Fe and Ni is 0.96-1.03. The aluminium alloy conductor material for the bus duct is adopted to prepare a bus bar with a rectangular section; the tensile strength of the bus bar is higher than 120 MPa, the elongation percentage of the bus bar is higher than 12%, the electric conductivity of the bus bar at 20 degrees centigrade is larger than 60.0% IACS, and the compressive creep resisting performance of the bur bar under a condition with temperature of 100 degrees centigrade and pressure of 45 MPa and under a condition with temperature of 90 degrees centigrade and pressure of 60 MPa is equivalent to that of a soft copper bus TMR. The aluminium alloy conductor material for the bus duct, disclosed by the invention, has the advantages that the bending property and operation safety of the aluminium and aluminium alloy bus bar are enhanced, and the aluminium and aluminium alloy bus bar canreplace a copper bus bar.

Description

technical field [0001] The invention belongs to the technical field of new electrical materials, and in particular relates to a formula of an aluminum alloy bus bar for a bus duct and a preparation method thereof. Background technique [0002] The aluminum alloy bus bar for bus duct not only needs high elongation, so that it has better bending performance, but also has certain strength, especially good compression creep resistance, and high electrical conductivity. Although 1350, 1060 and other industrial pure aluminum extruded busbars have excellent bending processability, their tensile strength cannot meet the strength requirements of the busbar. Usually, the tensile strength of 1060 and 1350 extruded busbars is not less than 60MPa, and the yield strength is not less than 30MPa. Under the conditions of 100°C and 17.2MPa, 1060 and 1350 will produce 1% creep deformation within 10 years, which seriously affects the safety of the busbar. The commonly used H111 state 6101 bus...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the safety problems of existing soft aluminum and aluminum alloy bus bars in use due to their low strength and low pressure creep resistance; to solve the problems of hard aluminum bus bars and high-strength aluminum alloy bus bars High strength, low elongation due to poor bending workability and low electrical conductivity