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Manufacturing method for dispersion strengthened oxygen-free copper alloy board

An alloy sheet and dispersion strengthening technology are applied in the field of preparation of dispersion strengthened oxygen-free copper alloy sheet, which can solve the problems of hot-rolling cracking and oxygen control of dispersion-strengthened oxygen-free copper, so as to solve the problems of hot rolling cracking and oxygen control, and ensure stability. The effect of low performance and material utilization

Active Publication Date: 2019-03-29
中铝洛阳铜加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a preparation method of dispersion strengthened oxygen-free copper alloy plate, which breaks through the history that dispersed oxygen-free copper can only be supplied by rods before, and improves the quality of dispersed oxygen-free copper. The utilization rate and processing efficiency of the material, through hot rolling in a protective atmosphere under high temperature conditions, solve the problem of hot rolling cracking and oxygen control of dispersed oxygen-free copper, ensure the stability of the material size, and prepare 1.0-5mm thick Dispersion-strengthened oxygen-free copper sheets meet the needs of key materials such as high-power microwave tube cavities in the electronic information industry and vacuum high-voltage switch contacts in the electrical industry

Method used

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Embodiment 1

[0026] Dispersion strengthened oxygen-free copper plate for electric vacuum microwave tube, thickness 2.0mm, Al 2 o 3 Content is 0.25wt%, and its preparation method comprises the following steps:

[0027] The first step, nitrogen atomization powder making: Use a 100kg intermediate frequency melting furnace for melting, first add high-purity oxygen-free electric copper to the intermediate frequency melting furnace for 40-70 minutes, cover the melting process with charcoal; then add copper-13% phosphorus The master alloy is deoxidized for 0.5-3 minutes, then copper-30% aluminum master alloy is added for smelting for 3-8 minutes, the content of Al in the Cu-Al alloy is controlled at 0.09-0.14wt%, and then the pressure is 0.7-1.0Mpa Nitrogen gas is used to atomize and make powder, dry and sieve out -100 mesh Cu—Al alloy original powder;

[0028] The second step, preparation of oxygen source: sieve the -100 mesh Cu-Al alloy raw powder again, sieve out -200 mesh Cu-Al powder, oxid...

Embodiment 2

[0038] Dispersion-strengthened oxygen-free copper sheet for vacuum high-voltage switch contacts, thickness 1.2mm, Al 2 o 3 Content is 0.11wt%, and its preparation method comprises the following steps:

[0039] The first step, nitrogen atomization powder making: Use a 100kg intermediate frequency melting furnace for melting, first add high-purity oxygen-free electric copper to the intermediate frequency melting furnace for 40-70 minutes, cover the melting process with charcoal; then add copper-13% phosphorus The master alloy is deoxidized for 0.5-3 minutes, then copper-30% aluminum master alloy is added for smelting for 3-8 minutes, the content of Al in the Cu-Al alloy is controlled at 0.09-0.14wt%, and then nitrogen gas with a pressure of 0.7-1.0Mpa is used to carry out Atomized powder, dried, sieved -100 mesh Cu-Al alloy original powder;

[0040] The second step, preparation of oxygen source: sieve the -100 mesh Cu-Al alloy raw powder again, sieve out -200 mesh Cu-Al powder...

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Abstract

The invention discloses a manufacturing method for a dispersion strengthened oxygen-free copper alloy board. A technological process of the manufacturing method comprises the following steps: atomizing nitrogen gas to prepare powder, preparing an oxygen source, mixing powder, performing cold isostatic pressing and processing, performing short-process integrated thermal treatment, extrusion-processing, performing hot-rolling on an extruded board or a sheared billet into a board, straightening and face-milling, cold-rolling, and straightening and finishing. The manufacturing method breaks through the history that only bars can be supplied for dispersion oxygen-free copper, increases a utilization rate of a dispersion oxygen-free copper material, improves the processing efficiency of the dispersion oxygen-free copper material, solves the hot-rolled cracking problem and the oxygen control problem of dispersion oxygen-free copper very well, ensures stability of the material dimension, manufactures the dispersion strengthened oxygen-free copper alloy board which is 1.0-5 mm thick, and meets needs of key materials such as an electronic information industry large-power microwave tube cavity and an electric industry overhead high-voltage switch contact sheet.

Description

technical field [0001] The invention relates to the dual technical fields of powder metallurgy and non-ferrous processing, in particular to a method for preparing a dispersion-strengthened oxygen-free copper alloy plate. Background technique [0002] At present, dispersion strengthened copper alloy is considered as a new functional material with great development potential and application prospect because of its excellent electrical conductivity, high strength and superior high temperature resistance. Many high-tech fields such as conductors, high-power microwave tubes, overhead wires for high-speed rail transit, electrodes for resistance welding, and molds for continuous casting machines have been widely used. [0003] Dispersion-strengthened copper has high strength and high softening temperature because of the small and uniform oxide points dispersed in the copper matrix; at the same time, the fine and dispersed oxide points will not have adverse effects on the electrical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/05C22C1/10C22C1/03C22C1/06B22F9/08B22F1/00B22F3/04B22F3/10B22F3/24
CPCB22F1/0003B22F3/04B22F3/1017B22F3/24B22F9/082B22F2998/10C22C1/03C22C1/0425C22C1/05C22C1/06C22C9/00
Inventor 曹先杰牛立业郭慧稳蒋小亮李新华
Owner 中铝洛阳铜加工有限公司
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