A kind of preparation method of tungsten-copper-cobalt alloy powder

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

Active Publication Date: 2018-03-16
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 object of the present invention is to provide a method for preparing tungsten-copper-cobalt alloy powder. The tungsten-copper-cobalt 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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  • A kind of preparation method of tungsten-copper-cobalt alloy powder

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Effect test

Embodiment 1

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

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

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

[0031] 4) After being...

Embodiment 2

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

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

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

[0039] 4) After being relea...

Embodiment 3

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

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

[0046] 3) Take the material out, and carry out high-temperature diffusion in the HYL-375-7Q steel belt reduction furnace under the protective gas or reducing atmosphere. 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 sie...

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Abstract

The invention discloses a preparation method of tungsten-copper-cobalt alloy powder. The invention selects atomized copper powder and crystalline tungsten powder as raw materials, adds carbonyl cobalt powder into the atomized copper powder and crystalline tungsten powder, and places them in a steel strip reduction furnace. In the process, high-temperature diffusion treatment is carried out under protective gas or reducing atmosphere, through the diffusion of cobalt carbonyl powder in atomized copper powder and crystalline tungsten powder, the atomized copper powder and crystalline tungsten powder are connected by alloy, and then crushed by a crusher Sieve to obtain tungsten-copper-cobalt alloy powder. The tungsten-copper-cobalt alloy powder prepared by the preparation method of the present invention has uniform composition, high density, excellent fluidity and is easy to form, solves the problem of easy segregation in the traditional preparation method, and has a simple preparation process and is 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-cobalt 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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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C27/04C22C1/04B22F1/00
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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