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Preparing technology of copper-based powder metallurgy material

A technology of powder metallurgy and preparation process, which is applied in the field of preparation process of copper-nickel powder metallurgy materials, which can solve the problems affecting the performance of materials, insufficient hardness and strength, etc., achieve high hardness and strength, reduce segregation, and refine the structure.

Active Publication Date: 2016-11-09
柳州四通材料科技有限公司
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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

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Effect test

preparation example Construction

[0021] The preparation technology of copper-based powder metallurgy material, it comprises the following steps:

[0022] Aluminum, copper and nickel particles are used as raw materials, and the content of nickel is 10wt%, the content of aluminum is 1-2 wt%, and the balance is copper; then the aluminum particles are placed in the induction heating furnace, and the aluminum particles are dissolved Finally, copper and nickel particles are added for smelting, and the scum is removed after the dissolution to obtain the alloy liquid; the alloy liquid is dropped onto the surface of the high-speed rotating copper wheel and thrown out, and the alloy strip is obtained by cooling; the alloy strip is soaked in 10% Hydrochloric acid for a few minutes to remove the oxide layer on the surface of the alloy strip, and rinsed with distilled water and anhydrous ethanol for several times, and then dried in a vacuum drying oven; cut the dried alloy strip, and then ball milled to obtain alloy powder...

Embodiment 1

[0027] 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 was ball-milled for 18 hours with a ball-to-material ratio of 4.5:1 to obtain alloy powder; the alloy powder was placed in a graphite mold, first sintered at 280°C for 30s, then at 500°C for 60s, and then at 650°C Sintering at ℃ for 30s; followed by solution treatment at 650℃ for 12min; followed by cold deformation treatment with a cold deformation of 30%; and finally aging treatment at 300℃ for 3h t...

Embodiment 2

[0029] 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 strips, and then use ball-to-material ratio of 4.5:1 to ball mill for 20 hours to obtain alloy powder; place the alloy powder in a graphite mold, sinter at 300°C for 25s, then sinter at 560°C for 50s, Sintering at 680°C for 25s; followed by solution treatment at 680°C for 11 minutes; followed by cold deformation treatment with a cold deformation of 32%; and finally aging treatment at 330°C for 2.5 hours t...

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Abstract

The invention relates to a preparing technology of a copper-based powder metallurgy material. The preparing technology comprises the steps that aluminum particles are placed in a heating furnace, after the aluminum particles are dissolved, copper particles and nickel particles are added to be smelted, after dissolving, dross is thoroughly dredged, and alloy liquid is obtained; the alloy liquid is dropped to the surface of a high-speed-rotating red copper wheel and is thrown out, and an alloy strip is obtained after cooling; the alloy strip is soaked in hydrochloric acid, and then the strip is washed and dried; the tailored and dried alloy strip is subject to ball grinding, and alloy powder is obtained; the alloy powder is placed in a graphite mould to be subject to hot pressing sintering, after sintering, mould unloading is carried out, and a copper nickel aluminum powder metallurgy material is obtained; the powder metallurgy material is subject to heat treatment; and the alloy liquid is thrown out through the rotating red copper wheel, and is rapidly cooled, it is ensured that metal stays for a short time at the high-temperature state, the alloy elements cannot be diffused in time, a structure is refined, and segregation is reduced. Meanwhile, the copper-based alloy material prepared through the powder metallurgy method has the higher hardness and the higher strength.

Description

technical field [0001] The invention relates to a copper-based alloy material, in particular to a preparation process of a copper-nickel powder metallurgy material. 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 and sin...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C9/06B22F3/14B22F9/04C22F1/08
CPCB22F3/14B22F9/04B22F2003/145B22F2003/248B22F2009/043B22F2998/10C22C1/0425C22C9/06C22F1/08
Inventor 易鉴荣唐臻林荔珊
Owner 柳州四通材料科技有限公司
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