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Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy

A technology of tungsten copper alloy and tungsten content, which is applied in the field of alloys to achieve the effect of uniform structure and high density

Active Publication Date: 2015-03-11
BAOJI JING LONG TUNGSTEN & MOLYBDENUM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the defects of traditional infiltration method and liquid phase sintering method

Method used

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  • Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy
  • Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy
  • Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the preparation of the tungsten-copper alloy (W50Cu50) that tungsten content is 50wt%, copper content is 50wt%

[0052] The preparation method comprises the following steps:

[0053] (1) get purity ≥ 99.95%, the average Fischer particle size is 5 micron tungsten powder, get purity ≥ 99.95%, the average particle size is the electrolytic copper powder of -300 purpose;

[0054] (2) Carry out powder pretreatment to the tungsten powder with airflow crushing and grading equipment (equipment model MQW10), to break up the agglomeration of the tungsten powder;

[0055] (3) Mix the dispersed tungsten powder and electrolytic copper powder obtained in step (2) uniformly in a powder mixer to obtain a mixed powder;

[0056] (4) Cold isostatic pressing of the mixed powder obtained in step (3), with an isostatic pressure of 300 MPa, to obtain a green compact with a thickness of 20 mm;

[0057] (5) pre-sintering the green compact obtained in step (4) in a hydrogen-throug...

Embodiment 2

[0066] Embodiment 2: the preparation of the tungsten copper alloy (W30Cu70) that tungsten content is 30wt%, copper content is 70wt%

[0067] The preparation method comprises the following steps:

[0068] (1) get purity ≥ 99.95%, the average Fischer particle size is 8 micron tungsten powder, get purity ≥ 99.95%, the average particle size is the electrolytic copper powder of -300 purpose;

[0069] (2) Carry out powder pretreatment to the tungsten powder with airflow crushing and grading equipment (equipment model MQW10), to break up the agglomeration of the tungsten powder;

[0070] (3) Mix the dispersed tungsten powder and electrolytic copper powder obtained in step (2) uniformly in a powder mixer to obtain a mixed powder;

[0071] (4) Cold isostatic pressing of the mixed powder obtained in step (3), with an isostatic pressure of 200 MPa, to obtain a green compact with a thickness of 20 mm;

[0072] (5) pre-sintering the compact obtained in step (4) in a hydrogen-passing resi...

Embodiment 3

[0080] Embodiment 3: the preparation of the tungsten copper alloy (W10Cu90) that tungsten content is 10wt%, copper content is 90wt%

[0081] The preparation method comprises the following steps:

[0082] (1) get purity ≥ 99.95%, the average Fischer particle size is 3 micron tungsten powder, get purity ≥ 99.95%, the average particle size is the electrolytic copper powder of -300 purpose;

[0083] (2) Carry out powder pretreatment to the tungsten powder with airflow crushing and grading equipment (equipment model MQW10), to break up the agglomeration of the tungsten powder;

[0084] (3) Mix the dispersed tungsten powder and electrolytic copper powder obtained in step (2) uniformly in a powder mixer to obtain a mixed powder;

[0085] (4) Cold isostatic pressing of the mixed powder obtained in step (3), the isostatic pressing pressure is 100MPa, to obtain a green compact, and the thickness of the green compact is 20mm;

[0086] (5) pre-sintering the compact obtained in step (4) ...

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Abstract

The invention provides a method for preparing a tungsten copper alloy. The preparation method comprises the steps of preparing tungsten and copper mixed powder into a briquet for presintering, and hot-pressing the briquet at a temperature lower than a melting point of copper. The tungsten copper alloy prepared by the preparation method is uniform in texture, high in density, excellent in performance and high in rate of finished products.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a tungsten-copper alloy with low tungsten content and a preparation method thereof. Background technique [0002] Tungsten-copper alloy is a "pseudo-alloy" composed of tungsten with high melting point and high hardness and copper with high electrical and thermal conductivity. It has good arc erosion resistance, welding resistance, high strength, high hardness and other advantages. In addition, its thermal conductivity, electrical conductivity and thermal expansion coefficient can be designed by adjusting the content of tungsten and copper components. Therefore, tungsten-copper alloys are widely used as electrical contact materials, resistance welding, EDM and plasma electrode materials, electrothermal alloys and high-density alloys, special-purpose military materials (such as rocket nozzles, aircraft throat linings), etc. In addition, tungsten-copper alloys are also used in he...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C9/00C22C27/04C22F1/08C22F1/18
Inventor 杨义兵苏国平韩蕊蕊钟铭骆学广
Owner BAOJI JING LONG TUNGSTEN & MOLYBDENUM CO LTD
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