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Method for preparing copper-based composite material by powder metallurgy

A copper-based composite material and powder metallurgy technology, applied in the field of copper-based alloy materials, can solve the problems of insufficient hardness and strength, affecting the performance of materials, and achieve the effects of reducing segregation, high hardness and strength, and refining the structure

Active Publication Date: 2017-12-08
东莞市环钜精密五金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness and strength of copper-based materials prepared by powder metallurgy technology are not enough, which affects the performance of materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 1wt% aluminum grains in an induction heating furnace, add 89wt% copper grains and 10wt% nickel grains for melting after the aluminum grains are dissolved, remove the scum after the dissolution, and obtain the alloy liquid; drop the alloy liquid into a high-speed rotating The surface of the red copper wheel is thrown out, cooled to obtain alloy strips; the alloy strips are soaked in 10% hydrochloric acid for several minutes, rinsed with distilled water and anhydrous ethanol for several times, and then dried in a vacuum drying oven; then cut and dried The final alloy strip is ball-milled for 18 hours with a ball-to-material ratio of 4.5:1 to obtain alloy powder; the alloy powder is placed in an extrusion die, and then extruded through an extrusion machine with a pressure of 1000MPa to obtain a copper-nickel-aluminum alloy material , then sintered at 280°C for 30s, then sintered at 500°C for 60s, and then sintered at 650°C for 30s; followed by solution treatment at 650°...

Embodiment 2

[0030] Put 1.5 wt% aluminum particles in an induction heating furnace, add 88.5 wt% copper particles and 10wt% nickel particles for melting after the aluminum particles are dissolved, remove the scum after the dissolution, and obtain the alloy liquid; drop the alloy liquid to The surface of the high-speed rotating red copper wheel is thrown out and cooled to obtain the alloy strip; the alloy strip is soaked in 10% hydrochloric acid for several minutes, rinsed with distilled water and anhydrous ethanol for several times, and then dried in a vacuum oven; then Cut the dried alloy strip, and then ball mill it with a ball-to-material ratio of 4.5:1 for 18 hours to obtain alloy powder; put the alloy powder in an extrusion die, and then extrude it through an extrusion machine with a pressure of 1100MPa to obtain copper-nickel-aluminum alloy Alloy material, then sintered at 300°C for 25s, then sintered at 560°C for 50s, and then sintered at 680°C for 25s; followed by solution treatment...

Embodiment 3

[0032] Put 2 wt % aluminum grains in an induction heating furnace, add 88 wt % copper grains and 10 wt % nickel grains for melting after the aluminum grains are dissolved, remove the scum after the dissolution, and obtain the alloy liquid; drop the alloy liquid to a high speed The surface of the rotating red copper wheel is thrown out and cooled to obtain the alloy strip; the alloy strip is soaked in 10% hydrochloric acid for several minutes, rinsed with distilled water and anhydrous ethanol for several times, and then dried in a vacuum drying oven; then cut The dried alloy strip is then milled for 18 hours with a ball-to-material ratio of 4.5:1 to obtain alloy powder; the alloy powder is placed in an extrusion die, and then extruded through an extrusion machine with a pressure of 1200MPa to obtain copper-nickel-aluminum alloy The material is then sintered at 320°C for 20s, then sintered at 600°C for 40s, and then sintered at 700°C for 20s; followed by solution treatment at 700...

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Abstract

The invention relates to a method for preparing a copper-based composite material through a metallurgy method. The method includes the steps that aluminum particles are put into a heating furnace, after the aluminum particles are dissolved, copper particles and nickel particles are added to be smelted, dross is dredged thoroughly after dissolved clarification is achieved, and alloy liquid is obtained; the alloy liquid is dripped to the surface of a red copper wheel rotating at a high speed to be thrown out, and an alloy belt is obtained after cooling; the alloy belt is soaked into hydrochloric acid, and then washing and drying are conducted; the dried alloy belt is cut and is then subjected to ball grinding, and alloy powder is obtained; the alloy powder is put into an extrusion die and then extruded and formed through an extruder, and the copper-nickel-aluminum alloy material is obtained; and the copper-nickel-aluminum alloy material is then subjected to heat treatment. According to the preparing technology, the alloy liquid is thrown out through the rotating red copper wheel, the alloy liquid can be rapidly cooled, it is ensured that metal stays for a relatively-short time in the high-temperature stage, alloy elements cannot be spread in time, and therefore the tissue is refined, and segregation is reduced; and meanwhile the copper-based alloy material prepared through the powder metallurgy method has relatively high hardness and strength.

Description

technical field [0001] The invention relates to copper-based alloy materials, in particular to a method for preparing copper-based composite materials by powder metallurgy. Background technique [0002] Copper and copper alloys are one of the earliest metal materials used, and are widely used in machinery manufacturing, transportation, construction, electrical, electronic and other industrial sectors; among them, the electrical and electronic industry consumes a large amount of copper, mainly for the manufacture of wires, communication cables, etc. . Copper and copper alloys are generally non-magnetic, and have good weldability, polishing performance and surface treatment performance. Doping nickel in copper can significantly improve corrosion resistance, strength, hardness, resistance, and reduce the temperature coefficient of resistivity. [0003] Powder metallurgy technology is a technology that uses metal powder or a mixture of metal powder and non-metal powder to form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22C1/04B22F9/04B22F3/20
CPCB22F3/20B22F9/04B22F2009/043B22F2998/10C22C1/04C22C9/06B22F3/1017B22F2003/248
Inventor 易鉴荣唐臻林荔珊
Owner 东莞市环钜精密五金有限公司