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Preparation method for tungsten-copper-cobalt alloy powder

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

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

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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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  • Preparation method for tungsten-copper-cobalt alloy powder

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Experimental program
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Effect test

Embodiment 1

[0028] 1) By weight percentage, weigh 80% crystalline tungsten powder, 16% atomized copper powder and 4% cobalt carbonyl powder, wherein, the mesh number of the crystalline tungsten powder is 400 mesh, and the mesh number of the cobalt carbonyl powder is 600 mesh, The mesh number of the atomized copper powder is 400 mesh, and the purity of the 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 cobalt carbonyl powder into w-20 double cone mixer and mix for 30min;

[0030] 3) Take out the material, 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 950 degrees Celsius, the diffusion time is 5h, and the cobalt powder is dissolved in copper and in copper. Diffusion in tungsten to realize alloy connection of copper and tungsten;

[0031] 4) After being rele...

Embodiment 2

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

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

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

[0039] 4) After being released, crush a...

Embodiment 3

[0044] 1) By weight percentage, weigh 40% crystalline tungsten powder, 58% atomized copper powder and 2% cobalt carbonyl powder, wherein, the mesh number of the crystalline tungsten powder is 600 mesh, and the mesh number of the cobalt carbonyl powder is 600 mesh, The mesh number of the atomized copper powder is 400 mesh, and the purity of the 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 cobalt carbonyl powder into w-20 double cone mixer and mix for 30min;

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

[0047] 4) After being released from the fur...

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Abstract

The invention discloses a preparation method for tungsten-copper-cobalt alloy powder. The preparation method comprises the following steps: selecting atomized copper powder and crystalline tungsten powder as raw materials; adding cobalt carbonyl powder into the atomized copper powder and the crystalline tungsten powder to obtain a mixture; putting the mixture into a steel belt reducing furnace to carry out high-temperature diffusion treatment under protective gas or a reducing atmosphere; diffusing the cobalt carbonyl powder in the atomized copper powder and the crystalline tungsten powder, thereby realizing alloy connection between the atomized copper powder and the crystalline tungsten powder; and crushing and screening the mixture by a crusher to obtain the tungsten-copper-cobalt alloy powder. The tungsten-copper-cobalt alloy powder prepared by the preparation method disclosed by the invention is uniform in component, high in compactness, excellent in flowing property and easy to form; the liable segregation problem in a conventional preparation method is solved; and the preparation method 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-cobalt alloy powder. Background technique [0002] Tungsten-copper alloy powder is widely used as perforated ammunition cover material and tungsten-copper electrical contact material because of its high melting point, high strength, low linear expansion coefficient of tungsten and copper's high thermal conductivity, high electrical conductivity, and high plasticity. application. In the process of processing and production, because of the large difference between metal copper-gold and tungsten, we cannot use the method of melting and casting for processing and production, but use powder alloy technology for production. The traditional preparation method of tungsten-copper alloy powder One is the infiltration method, which uses the capillary force to wet the molten metal with a lower melting point and fill the porous basic skeleton with...

Claims

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Application Information

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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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