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Preparation method for tungsten copper nickel alloy powder

A technology of tungsten-copper-nickel alloy powder, which is applied in the field of preparation of tungsten-copper-nickel alloy powder, can solve problems such as easy segregation, and achieve the effects of easy segregation, easy operation, and easy forming

Active Publication Date: 2015-11-18
KUN SHAN DOTOP METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a preparation method of tungsten-copper-nickel alloy powder. The tungsten-copper-nickel alloy powder prepared by the method has uniform composition, high density, excellent fluidity and easy molding, which solves the problem of traditional The problem of easy segregation in the preparation method

Method used

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  • Preparation method for tungsten copper nickel alloy powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) By weight percentage, take 80% crystalline tungsten powder, 16% atomized copper powder and 4% carbonyl nickel powder, wherein the mesh number of crystalline tungsten powder is 400 mesh, and the mesh number of carbonyl nickel powder is 600 mesh, The mesh number of atomized copper powder is 400 mesh, and the purity of crystalline tungsten powder, carbonyl nickel powder and atomized copper powder is greater than 99.5%;

[0029] 2) Add crystalline tungsten powder, atomized copper powder, and carbonyl nickel powder into w-20 double cone mixer, and mix for 30 minutes;

[0030] 3) Take out the material, and carry out high-temperature diffusion in the protective gas or reducing atmosphere in the HYL-375-7Q steel belt reduction furnace. The set temperature is 950 degrees Celsius, and the diffusion time is 5 hours. Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0031] 4) After being released from the furnace, it is crushed and sieved by a...

Embodiment 2

[0036] 1) By weight percentage, weigh 60% crystalline tungsten powder, 37% atomized copper powder and 3% carbonyl nickel powder, wherein the mesh number of crystalline tungsten powder is 500 mesh, and the mesh number of carbonyl nickel powder is 650 mesh, The mesh number of atomized copper powder is 380 mesh, and the purity of crystalline tungsten powder, carbonyl nickel powder and atomized copper powder is greater than 99.5%;

[0037] 2) Add crystalline tungsten powder, atomized copper powder, and carbonyl nickel powder into w-20 double cone mixer, and mix for 30 minutes;

[0038] 3) Take the material out, and carry out high-temperature diffusion in a protective gas or a reducing atmosphere in a HYL-375-7Q steel belt reduction furnace. The set temperature is 800 degrees Celsius, and the diffusion time is 4 hours. Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0039] 4) After being released from the furnace, it is crushed and sieved by a ...

Embodiment 3

[0044] 1) By weight percentage, take 40% crystalline tungsten powder, 58% atomized copper powder and 2% carbonyl nickel powder, wherein the mesh number of crystalline tungsten powder is 600 mesh, and the mesh number of carbonyl nickel powder is 600 mesh, The mesh number of atomized copper powder is 400 mesh, and the purity of crystalline tungsten powder, carbonyl nickel powder and atomized copper powder is greater than 99.5%;

[0045] 2) Add crystalline tungsten powder, atomized copper powder, and carbonyl nickel powder into w-20 double cone mixer, and mix for 30 minutes;

[0046] 3) Take out the material, and carry out high-temperature diffusion in a protective gas or a reducing atmosphere in a HYL-375-7Q steel belt reduction furnace. The set temperature is 750 degrees Celsius, and the diffusion time is 3 hours. Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0047] 4) After being released from the furnace, it is crushed and sieved by a c...

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Abstract

The invention discloses a preparation method for tungsten copper nickel alloy powder. Atomized copper powder and crystalline tungsten powder are selected and used as raw materials; carbonyl nickel powder is added to the atomized copper powder and the crystalline tungsten powder; mixed materials are put into a steel belt reduction furnace; high-temperature diffusion treatment is carried out at shielding gas or reducible atmosphere; alloy connection of the atomized copper powder and the crystalline tungsten powder is achieved through the diffusion of the carbonyl nickel powder in the atomized copper powder and the crystalline tungsten powder; the tungsten copper nickel alloy powder is obtained through crushing and screening of a crusher after the alloy connection. According to the preparation method for the tungsten copper nickel alloy powder, the prepared tungsten copper nickel alloy powder is even in composition, high in density, good in flowing property and easy to form; the problem of liable segregation in a traditional preparation method is solved; in addition, the preparation technology is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of metal alloys, in particular to a preparation method of tungsten-copper-nickel alloy powder. Background technique [0002] Tungsten copper alloy powder is widely used as perforated ammunition cover material and tungsten copper electrical contact material due to its high melting point, high strength, low linear expansion coefficient of tungsten and high thermal conductivity, high electrical conductivity and high plasticity of copper. application. In the process of processing and production, because of the relatively large difference between metal copper, gold and tungsten, we cannot process and produce by melting and casting, but use powder alloy technology for production. The traditional tungsten-copper alloy powder preparation method One is the infiltration method, which is to use the capillary force to wet and fill the porous basic skeleton with a certain density and strength with the molten metal with ...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F9/20
Inventor 朱胜利郭殿月陈文华王汉宁
Owner KUN SHAN DOTOP METAL TECH CO LTD
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