A kind of tungsten gold alloy material and preparation method thereof

A technology of alloy material and tungsten gold, which is applied in the field of tungsten gold alloy material and its preparation, can solve problems such as single color and cannot satisfy the consumer market, and achieve the effect of simple process, excellent mechanical and physical properties, and high material utilization rate

Active Publication Date: 2018-03-09
杭州正驰达精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has certain mechanical and physical properties, its highest density does not exceed 18.7 g / cm 3 , and the color is single, so it cannot meet the needs of the consumer market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: Prepare pure tungsten bulk body

[0030] Take 40g of commercially available pure tungsten powder, the average particle diameter of tungsten powder is about 3.8um, and the purity is 99.5%; it is mixed with 10g of paraffin wax binder to form a feed material with uniform dispersion and good fluidity, and it is made by injection molding in a mold by an injection molding machine A block body of pure tungsten.

[0031] Step 2 Remove the binder

[0032] Immerse the prepared pure tungsten block body in a container filled with acetone for 96 hours, so that about 80% of the binder in the pure tungsten block body is dissolved in the acetone liquid; then the aforementioned block tungsten body The body is placed in a thermal degreasing furnace with a hydrogen protective atmosphere at 600°C for 8 hours, so that the remaining binder is decomposed and volatilized, and a net-like void is formed inside the pure tungsten block material;

[0033] Step 3 Preparation of sintered bu...

Embodiment 2

[0038] Step 1: Prepare pure tungsten block body

[0039] Take 40g of commercially available pure tungsten powder, the average particle diameter of tungsten powder is about 3.8um, and the purity is 99.5%; it is mixed with 10g of paraffin wax binder to form a feed material with uniform dispersion and good fluidity, which is injected into a mold by an injection molding machine to produce A pure tungsten block green body is obtained.

[0040] Step 2 Remove the binder

[0041] Immerse the prepared pure tungsten block body in a container filled with acetone for 72 hours, so that about 75% of the binder in the pure tungsten block body is dissolved in the acetone liquid; then the aforementioned block tungsten body The body is placed in a thermal degreasing furnace with a hydrogen protective atmosphere at 500°C for 15 hours, so that the remaining paraffin wax binder is decomposed and removed, and a net-like void is formed inside the pure tungsten block material;

[0042] Step 3 Prepa...

Embodiment 3

[0047] Step 1: Prepare pure tungsten bulk body

[0048] Take 40g of commercially available pure tungsten powder, the average particle diameter of tungsten powder is about 3.8um, and the purity is 99.5%; it is mixed with 10g of paraffin wax binder to form a feed material with uniform dispersion and good fluidity, which is injected into a mold by an injection molding machine to produce A pure tungsten block green body is obtained.

[0049] Step 2 Remove the binder

[0050] Immerse the prepared pure tungsten block body in a container filled with acetone for 50 hours, so that about 80% of the binder in the pure tungsten block body is dissolved in the acetone liquid; then the aforementioned block tungsten body The body is placed in a thermal degreasing furnace with a hydrogen protective atmosphere at 850°C for 12 hours, so that the remaining paraffin wax binder is decomposed and volatilized, and a net-like void is formed inside the pure tungsten block body;

[0051] Step 3 Prepar...

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Abstract

The invention relates to a tungsten gold alloy material and a preparation method thereof. The purpose is to provide that the tungsten gold alloy material obtained by the method should have the characteristics of high density, special luster, and lower cost than pure gold, and the preparation method adopted should have the characteristics of simple process, high production efficiency and low investment. The technical solution is: a tungsten-gold alloy material. The components and corresponding mass percentages contained in the tungsten-gold alloy material are: tungsten (W) 70-89.5%; gold (Au) 10-30%; the rest are other trace elements and impurities. A preparation method of a tungsten-gold alloy material is carried out in sequence as follows: 1) preparation of a block tungsten body by an injection molding process; 2) removal of a binder; 3) sintering; 4) infiltration of pure gold.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a tungsten-gold alloy material and a preparation method thereof. Background technique [0002] Tungsten-based high-density alloys are widely used in the defense industry and civil industry because of their high density, excellent mechanical properties and good corrosion resistance. The existing tungsten-based high-density alloy is mainly composed of matrix tungsten and binder phase nickel, iron (copper), cobalt, etc., and is usually produced by powder metallurgy. Although it has certain mechanical and physical properties, its highest density does not exceed 18.7 g / cm 3 , and the color is single, so it cannot meet the needs of the consumer market. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the above background technology and provide a tungsten-gold alloy material and its preparation method. The tungsten-gold alloy ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/04C22C1/00B22F3/22B22F3/10B22F3/24
CPCC22C1/00C22C27/04B22F3/1007B22F3/225B22F3/24B22F2998/10B22F1/10
Inventor 郑金良
Owner 杭州正驰达精密机械有限公司
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