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Preparation method of tungsten-copper-tin alloy powder

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

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] 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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  • Preparation method of tungsten-copper-tin alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) By weight percentage, weigh 80% crystalline tungsten powder, 16% atomized copper powder and 4% tin powder, wherein the mesh number of crystalline tungsten powder is 400 mesh, and the mesh number of tin powder is 600 mesh, atomized The mesh number of copper powder is 400 mesh, 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 into w-20 double cone mixer, and mix for 30 minutes;

[0031] 3) Take out the material, 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 tin powder in the copper and in the Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0032] 4) After being released from the furnace, it is crushed and screened ...

Embodiment 2

[0038] 1) By weight percentage, weigh 60% crystalline tungsten powder, 37% atomized copper powder and 3% tin powder, wherein the mesh number of crystalline tungsten powder is 500 mesh, and the mesh number of tin powder is 650 mesh, atomized The mesh number of copper powder is 380 mesh, 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 into w-20 double cone mixer, and mix for 30 minutes;

[0040] 3) Take out the material, 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 800 degrees Celsius, and the diffusion time is 4h. Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0041] 4) After being released from the furnace, it is crushed and screened by a crusher to obtain tungsten-copper-tin alloy po...

Embodiment 3

[0046] 1) By weight percentage, weigh 40% crystalline tungsten powder, 58% atomized copper powder and 2% tin powder, wherein the mesh number of crystalline tungsten powder is 600 mesh, and the mesh number of tin powder is 600 mesh, atomized The mesh number of copper powder is 400 mesh, 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 into w-20 double cone mixer, and mix for 30 minutes;

[0048] 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 750 degrees Celsius, and the diffusion time is 3 hours. Diffusion in tungsten to realize the alloy connection between copper and tungsten;

[0049] 4) After being released from the furnace, it is crushed and screened by a crusher to obtain tungsten-copper-tin alloy po...

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Abstract

The invention discloses a preparation method of tungsten-copper-tin alloy powder. The preparation method comprises the steps that atomized copper powder and crystalline tungsten powder are taken as the raw materials; tin power is added to the atomized copper powder and the crystalline tungsten powder; the mixed powder is placed in a steel band reduction furnace, and is subjected to high temperature diffusion treatment in a shielding gas or reducing gas atmosphere; and through the diffusion of the tin power in the atomized copper powder and the crystalline tungsten powder, alloy connection between the atomized copper powder and the crystalline tungsten powder is realized; and through breaking and screening of a crusher, the tungsten-copper-tin alloy powder is obtained. The tungsten-copper-tin alloy powder prepared by preparation method is uniform in component, high in density, excellent in flowing property and easy to form; the problem that the possibility of segregation in the traditional preparation method is high is solved; and the preparation method is simple in preparation technology 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-tin 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 a l...

Claims

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Application Information

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Patent Type & Authority Applications(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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