A high-temperature-resistant high-strength beryllium-free copper wire and its preparation method

Abstract

The invention discloses a high-temperature-resistant, high-strength and beryllium-copper-free wire and a preparation method thereof. The preparation method comprises steps: S1, high-purity copper, pure iron and a block-shaped covering agent are mixed, molten, kept at the constant temperature and stirred, a copper-nickel alloy, a copper-strontium alloy, a copper-indium alloy, magnesium rods and rare earth element lanthanum are added, the mixture is heated to 1,230-1,260 DEG C, stirred and molten, and copper alloy melt is obtained; S2, component detection is performed on the copper alloy melt; S3, the copper alloy melt obtained in S2 is introduced into a high-vacuum single-roll rotary quenching and spray casting system and heated to 950-970 DEG C for spray casting, air is introduced after cooling, and a thin strip is obtained after balance of atmospheric pressure; S4, the thin strip is subjected to continuous annealing and homogenization in a magnetic field under the condition of 590-630 DEG C, and the high-temperature-resistant, high-strength and beryllium-copper-free wire is obtained through cold rolling and ageing treatment. With the iron-copper alloy as a basis, multiple alloy elements are added in a matched manner to replace conventional beryllium copper alloy materials, the cost is reduced, a reasonable preparation process is matched, and the comprehensive performance of the material is improved.

Description

technical field [0001] The invention relates to the technical field of beryllium-free copper wires, in particular to a high-temperature-resistant high-strength beryllium-free copper wire and a preparation method thereof. Background technique [0002] At present, the high-strength copper wires used for welding machine electrodes, low-pressure casting molds, and turbo generator slot wedges are mainly beryllium-cobalt-copper and beryllium-nickel-copper series. CuNi was developed to save beryllium and cobalt resources and reduce costs. 2 Alloys such as SiCr, but there is still a big gap in comprehensive performance, especially high-temperature resistance. The alloying and processing technology development of beryllium-free copper alloy materials is still a hot and difficult research topic in this field. Therefore, on the basis of traditional copper alloy materials, it is necessary to further improve the performance of copper alloys, especially the high temperature resistance, by...

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Problems solved by technology

[0002] At present, the high-strength copper wires used for welding machine electrodes, low-pressure casting molds, and turbo generator slot wedges are mainly beryllium-cobalt-copper and beryllium-nickel-copper series. CuNi was developed to save beryllium and cobalt resources and reduce costs. 2 Alloys such as SiCr, but there is still a big gap in comprehensive performance, especially high temperature resistance. The alloying and processing technology development of beryllium-free copper alloy materials is still a hot and difficult research point in this field.