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

A tin alloy and tungsten-copper technology is applied in the field of preparation of tungsten-copper-tin alloy powder, which can solve problems such as easy segregation, and achieve the effects of easy segregation, excellent flow performance and simple preparation process.

Active Publication Date: 2018-07-31
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] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for preparing tungsten-copper-tin alloy powder. The tungsten-copper-tin alloy powder prepared by the method has uniform composition, high density, excellent flowability 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-tin alloy powder

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Experimental program
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Effect test

Embodiment 1

[0029] 1) In terms of weight percentage, weigh 80% crystalline tungsten powder, 16% atomized copper powder and 4% tin powder. Among them, the mesh of crystalline tungsten powder is 400 mesh, and the mesh of tin powder is 600 mesh. The mesh number of copper powder is 400 meshes, and the purity of crystalline tungsten powder, tin powder and atomized copper powder is greater than 99.5%;

[0030] 2) Add crystalline tungsten powder, atomized copper powder, and tin powder to w-20 double cone mixer and mix for 30 minutes;

[0031] 3) Take out the material, pass it through the HYL-375-7Q steel belt reduction furnace for high-temperature diffusion in protective gas or reducing atmosphere, set the temperature to 950 degrees Celsius, and the diffusion time to 5h. Through the tin powder in the copper and in the Diffusion in tungsten to realize the alloy connection of copper and tungsten;

[0032] 4) After being out of the furnace, it is crushed and screened by a crusher to obtain tungsten-coppe...

Embodiment 2

[0038] 1) In terms of weight percentage, weigh 60% crystalline tungsten powder, 37% atomized copper powder and 3% tin powder. Among them, the mesh of crystalline tungsten powder is 500 mesh, and the mesh of tin powder is 650 mesh, atomized The mesh number of copper powder is 380 meshes, and the purity of crystalline tungsten powder, tin powder and atomized copper powder is greater than 99.5%;

[0039] 2) Add crystalline tungsten powder, atomized copper powder, and tin powder to w-20 double cone mixer and mix for 30 minutes;

[0040] 3) Take out the material, pass through the HYL-375-7Q steel belt-type reduction furnace for high-temperature diffusion in protective gas or reducing atmosphere, set the temperature to 800 degrees Celsius, and the diffusion time to 4h. Through the tin powder in the copper and in the Diffusion in tungsten to realize the alloy connection of copper and tungsten;

[0041] 4) After being out of the furnace, it is crushed and screened by a crusher to obtain tun...

Embodiment 3

[0046] 1) In terms of weight percentage, weigh 40% crystalline tungsten powder, 58% atomized copper powder and 2% tin powder. Among them, the mesh of crystalline tungsten powder is 600 mesh, and the mesh of tin powder is 600 mesh, atomized The mesh number of copper powder is 400 meshes, and the purity of crystalline tungsten powder, tin powder and atomized copper powder is greater than 99.5%;

[0047] 2) Add crystalline tungsten powder, atomized copper powder, and tin powder to the w-20 double cone mixer and mix for 30 minutes;

[0048] 3) Take out the material, pass it through the HYL-375-7Q steel belt reduction furnace for high-temperature diffusion in protective gas or reducing atmosphere, set the temperature to 750 degrees Celsius, and the diffusion time to 3h. Through the tin powder in the copper and in the Diffusion in tungsten to realize the alloy connection of copper and tungsten;

[0049] 4) After being out of the furnace, it is crushed and screened by a crusher to obtain t...

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Abstract

The invention discloses a preparation method of tungsten-copper-tin alloy powder. The invention selects atomized copper powder and crystalline tungsten powder as raw materials, adds tin powder into the atomized copper powder and crystalline tungsten powder, and places them in a steel strip reduction furnace. , high-temperature diffusion treatment is carried out under protective gas or reducing atmosphere, through the diffusion of tin powder in atomized copper powder and crystalline tungsten powder, the atomized copper powder and crystalline tungsten powder are connected by alloy, and then crushed and screened by the crusher Obtain tungsten-copper-tin alloy powder. The tungsten-copper-tin 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 simple preparation process and easy operation.

Description

Technical field [0001] The invention relates to the technical field of metal alloys, in particular to a method for preparing tungsten-copper-tin alloy powder. Background technique [0002] Because tungsten copper alloy powder combines the high melting point, high strength, low linear expansion coefficient of tungsten and the excellent performance of copper's high thermal conductivity, high electrical conductivity, and high plasticity, it is widely used as a perforated ammunition type cover material and a tungsten copper electrical contact material application. In the process of processing and production, because of the large difference between copper, gold and tungsten, we cannot use the method of fusion casting for processing and production, but use the technology of powder alloy for production, the traditional method of preparing tungsten copper alloy powder One is the infiltration method, which uses capillary force to wet the molten metal with a lower melting point and fill a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F1/00
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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