Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A preparation method of dispersion strengthened copper and oxygen-free copper composite rod

A dispersion-strengthened copper and oxygen-free copper technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems that no dispersion-strengthened copper and oxygen-free copper are combined to prepare composite rods, and achieve high strength and high temperature softening resistance Strong ability and good brazing performance

Active Publication Date: 2019-11-15
中铝洛阳铜加工有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there are dozens of patents related to dispersed copper in China, and most of the related dispersion-strengthened copper preparation technologies adopt short-process preparation technologies, but no technology has been found to prepare dispersion-strengthened copper and oxygen-free copper into composite rods; how to pass Powder metallurgy and pressure processing technology, composite Cu-Al2O3 nano-dispersion strengthened copper and oxygen-free copper, prepare Cu-Al2O3 nano-dispersion strengthened copper and oxygen-free copper composite rod, improve dispersion strengthened copper and oxygen-free copper composite rod The comprehensive performance has become a technical problem that has been difficult to solve for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation method of dispersion strengthened copper and oxygen-free copper composite rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A composite rod of dispersion-strengthened copper and oxygen-free copper used for the external cavity of microwave tube;

[0032] 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 to 70 minutes, cover the melting process with charcoal; then add Cu-P alloy for deoxidation 0.5-3 minutes, the proportion of Cu in Cu-P alloy is 86-88%, the proportion of P in Cu-P alloy is 11-15%, then add Cu-Al alloy and smelt for 3-8 minutes, the Cu-Al alloy The proportion of Cu is 69-71%, the proportion of Al in the Cu-Al alloy is 28-32%, the content of Al in the Cu-Al alloy is controlled at 0.09-0.14wt%, and then the mist is carried out with nitrogen gas at a pressure of 0.7-1.0Mpa. Chemical powdering, drying and sieving to obtain -100 mesh Cu-Al alloy raw powder;

[0033]The second step, preparation of oxygen source: sie...

Embodiment 2

[0047] A composite rod made of dispersion-strengthened copper and oxygen-free copper for high-current high-voltage relay contacts of new energy vehicles;

[0048] 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 to 70 minutes, cover the melting process with charcoal; then add Cu-P alloy for deoxidation 0.5-3 minutes, the proportion of Cu in Cu-P alloy is 86-88%, the proportion of P in Cu-P alloy is 11-15%, then add Cu-Al alloy and smelt for 3-8 minutes, the Cu-Al alloy The proportion of Cu is 69-71%, the proportion of Al in the Cu-Al alloy is 28-32%, the content of Al in the Cu-Al alloy is controlled at 0.56-0.67wt%, and then the mist is carried out with nitrogen gas at a pressure of 0.7-1.0Mpa. Chemical powdering, drying and sieving to obtain -100 mesh Cu-Al alloy raw powder;

[0049] The second step, prepar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A method for preparing dispersion-strengthened copper and oxygen-free copper composite rods, the preparation process steps are: nitrogen atomization powder making→oxygen source preparation→powder mixing→cold isostatic pressing→short process, integrated heat treatment→extrusion processing →Finishing, peeling→Preparation of dispersion-strengthened copper and oxygen-free copper composite copper ingot→Secondary extrusion of dispersion-strengthened copper and oxygen-free copper composite copper ingot→Drawing processing of dispersion-strengthened copper and oxygen-free copper composite rod→Inspection and testing; Through powder metallurgy and pressure processing technology, Cu-Al2O3 nano-dispersion strengthened copper and oxygen-free copper are combined to prepare Cu-Al2O3 nano-dispersion strengthened copper and oxygen-free copper composite rods, using Cu-Al2O3 nano-dispersion strengthened copper at high temperature The characteristics of high-strength and high-grade oxygen-free copper meet the needs of key materials such as high-power microwave tubes in the electronic information industry and high-current high-voltage relays in the electrical industry.

Description

technical field [0001] The invention relates to the fields of powder metallurgy and non-ferrous metal processing, in particular to a method for preparing a dispersion-strengthened copper and oxygen-free copper composite rod. Background technique [0002] Dispersion strengthening is a method of strengthening the material by introducing stable, uniform, and fine oxide material points into the metal matrix, pinning dislocations, grain boundaries, and subgrain boundaries, and hindering the movement of dislocations; Small and uniform oxide spots are dispersed in the medium, which has high strength and high softening temperature; at the same time, the fine and dispersed oxide spots will not adversely affect the electrical and thermal conductivity of the copper alloy itself, so that the dispersion strengthened copper can improve the strength. At the same time, it can maintain its own excellent electrical and thermal conductivity; therefore, dispersion-strengthened copper is the cop...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04B22F9/08B22F1/00B22F3/04B22F3/10B22F3/24
CPCB22F1/0003B21C37/04B22F3/04B22F3/1017B22F3/24B22F9/082B22F2998/10B22F1/145
Inventor 牛立业曹先杰郭慧稳李欣华郭惠祥袁新民
Owner 中铝洛阳铜加工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com