Preparation method of Wolfram-Nickel-Ferrum (W-Ni-Fe) alloy parts

A technology of tungsten-nickel-iron alloy and parts is applied in the field of preparing tungsten-nickel-iron alloy parts, which can solve the problems of unsuitability for mass production, product design restrictions, single product shape, etc. The effect of machining

Inactive Publication Date: 2013-04-24
LUOYANG SIFON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing tungsten-nickel-iron alloy parts with high complexity in shape, excellent comprehensive performance and mass production,...

Method used

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Experimental program
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Effect test

Embodiment 1

[0031] Processing step of the present invention is as follows:

[0032] 1) Material preparation: The metal powders used are reduced tungsten powder, hydroxynickel powder and hydroxyiron powder. The physical properties of each powder are: W content of tungsten powder>99.95%, particle size 3~5μm; nickel powder Ni content>99.8%, particle size 3~5μm; iron powder Fe content>99.5%, particle size 3~5μm.

[0033] 2) Powder blending: Weigh W powder, Fe powder, and Ni powder according to the proportion, mix them in a V-shaped mixer for 24 hours, and the speed is 50r / min;

[0034] a) Firstly weigh the tungsten powder, iron powder and nickel powder screened by corresponding weight according to the required weight ratio in a clean working environment. The weight ratio of tungsten-nickel-iron is W: 95, Ni: 3.5, Fe: 1.5;

[0035] b) Preliminarily mix tungsten powder, nickel powder and iron powder in a stainless steel pan. The purpose of preliminary mixing is to make the mechanical mixing m...

Embodiment 2

[0071] Processing step of the present invention is as follows:

[0072] 1) Material preparation: The metal powders used are reduced tungsten powder, hydroxynickel powder and hydroxyiron powder. The physical properties of each powder are: W content of tungsten powder>99.95%, particle size 3~5μm; nickel powder Ni content>99.8%, particle size 3~5μm; iron powder Fe content>99.5%, particle size 3~5μm.

[0073] 2) Powder blending: Weigh W powder, Fe powder, and Ni powder according to the proportion, mix them in a V-shaped mixer for 24 hours, and rotate at a speed of 30r / min;

[0074] a) Firstly weigh the tungsten powder, iron powder and nickel powder screened by corresponding weight according to the required weight ratio in a clean working environment. The weight ratio of tungsten-nickel-iron is W: 95, Ni: 3.5, Fe: 1.5;

[0075] b) Preliminarily mix tungsten powder, nickel powder and iron powder in a stainless steel pan. The purpose of preliminary mixing is to make the mechanical ...

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Abstract

The invention discloses a preparation method of W-Ni-Fe alloy parts. The preparation method includes the steps of (1) material preparing by using reducted tungsten powder, hydroxy nickel powder and hydroxy iron powder as metal powder; (2) powder blending by weighing W powder, Fe powder and Ni powder in the proportion of 95:3.5:1.5; (3) binder preparation; (4) W-Ni-Fe materials mixing and feeding; (5) pelletizing; (6) injection molding; (7) solvent degreasing; (8) thermal debinding; (9) sintering; (10) thermal treating after sintering. By the preparation method, problem caused by using the present manufacturing process of W-Ni-Fe alloy is solved, so that product shapes are diversified, product design is liberated, mass production is implemented, manufacturing cost is reduced and the like.

Description

technical field [0001] The invention relates to a metal injection molding technology, in particular to a method for preparing tungsten-nickel-iron alloy parts. Background technique [0002] Tungsten-nickel-iron alloy is an alloy composed of tungsten as the matrix (the tungsten content is 85%-98%), and a small amount of Ni and Fe are added. Its density is as high as 16.5-19.0g / cm 3 , Also known as heavy alloys or high-density alloys. Tungsten-nickel-iron alloy has a series of excellent physical and mechanical properties and serviceability such as high density, high strength and hardness, good electrical conductivity and thermal conductivity, small thermal expansion coefficient, good corrosion resistance and oxidation resistance, good machinability and weldability, etc. Therefore, tungsten-nickel-iron alloy has been widely used in national defense industry and civilian industry, especially W-Ni-Fe alloy is used as a strong damage warhead material in the national defense indus...

Claims

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Application Information

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IPC IPC(8): B22F3/20B22F3/22C22C27/04C22C1/04
Inventor 赵文普高建杰
Owner LUOYANG SIFON ELECTRONICS
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