Method for preparing TiC/CuW alloy contact material

A contact material and alloy technology, applied in the direction of contacts, electrical components, electrical switches, etc., can solve the problem of high temperature strength drop of tungsten, and achieve the effect of improving arc ablation resistance, high electrical conductivity, and easy control.

Inactive Publication Date: 2009-08-26
XIAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, the high temperature strength of tungsten decreases significantly with the increase o

Method used

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  • Method for preparing TiC/CuW alloy contact material
  • Method for preparing TiC/CuW alloy contact material
  • Method for preparing TiC/CuW alloy contact material

Examples

Experimental program
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[0026] Example

[0027] According to the above preparation method, the relevant process parameters in the following Table 1 are selected to prepare the TiC-containing CuW alloy. The proportioning content of the twelve examples is shown in Table 1, and the process parameters of the twelve examples are shown in Table 1. 2 shown.

[0028] Table 1 The proportion content and process parameter table of the twelve examples

[0029] Example

[0030] Table 2 Process control parameter table of twelve embodiments

[0031]

[0032] Example 3

[0033] The TiC-containing CuW alloy materials prepared in the above twelve embodiments were subjected to a vacuum electrical breakdown experiment in a TDR-40A single crystal furnace. The surface of the TiC-CuW material was polished to a mirror surface and then loaded into the vacuum chamber as a cathode. Use diameter as The needle-shaped pure W rod of 3 was used as the anode, a DC voltage of 8kV was applied between the two...

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Abstract

A method for CuW alloy contact material is disclosed in the invention, wherein tungsten powder and TiC powder are respectively weighted based on a mass ratio of 1:0.5%-1.5%, inducing copper powder are weighted based on 5%-8% of the total mass of the tungsten powder and the TiC powder, the tungsten powder, the copper powder and the TiC powder are put into a mixing tank into which industrial alcohol is added, then a non-equi-diameter grinding ball is added into the tank for batch mixing; the well-mixed mixture is poured into an axially-pressing steel mould to be mould-pressed to a tungsten green compact, an infiltrated metal copper block, together with the tungsten green compact, are placed in a graphite crucible, after being disposed within a sintering furnace having an atmosphere of high-temperature H2, the skeleton of the tungsten green compact is sintered at first and is then infiltrated. For the Tic-phase-added CuW material prepared by the inventive method, as electric arcs are efficiently dispersed, the electric arc ablation resistance of the CuW contact material is enhanced; the invention is simple in technique and easy to control.

Description

technical field [0001] The invention belongs to the technical field of material preparation and relates to a method for preparing a TiC / CuW alloy contact material. Background technique [0002] CuW alloys are used as contact materials in high-voltage switches. With the development of high-voltage switches in the direction of ultra-high voltage and large capacity, higher requirements are placed on the performance of CuW materials. It is necessary to develop and develop new types with better performance. CuW contact material. [0003] During the working process of the CuW alloy contact, due to the action of the high-voltage arc, physical metallurgical processes such as heating, melting, gasification, flow, and solidification occur on the surface of the contact, resulting in softening, splashing, flow, and cracks on the surface of the contact. Therefore, in addition to good mechanical and physical properties, the CuW contact material should also have the characteristics of dis...

Claims

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Application Information

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IPC IPC(8): H01H11/04H01H1/021C22C1/05
Inventor 杨晓红范志康梁淑华肖鹏邹军涛王献辉
Owner XIAN UNIV OF TECH
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