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Tungsten carbide based contact material highly resistant to arc ablation

An arc ablation, tungsten carbide-based technology, applied in the direction of contacts, circuits, electric switches, etc., can solve the problems of high cost of contact materials, unfavorable popularization and application, limited resource reserves, etc., and achieve strong arc corrosion resistance and guarantee Consistency, high density effect

Inactive Publication Date: 2017-05-10
傅永红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since W, Ag, etc. are precious metals, the resource reserves are limited, and the use of such precious metals as raw materials makes the cost of contact materials too expensive, which is not conducive to popularization and application
In addition, the existing contact materials have poor wear resistance and are difficult to use on sliding contacts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A tungsten carbide-based electrical contact material with high resistance to arc ablation, including the following components in weight percentage: Y 0.002%, Sb 0.01%, Ti 0.03%, Bi 0.05%, Co 0.008%, Mn 0.04%, Ag 0.07%, B 0.009%, Zr 0.001%, and the balance is tungsten carbide.

Embodiment 2

[0016] A tungsten carbide-based electrical contact material with high resistance to arc ablation, including the following components in weight percentage: Y 0.01%, Sb 0.25%, Ti 0.40%, Bi 0.50%, Co 0.05%, Mn 0.26%, Ag 0.38%, B 0.08%, Zr 0.009%, and the balance is tungsten carbide.

Embodiment 3

[0018] A tungsten carbide-based electrical contact material with high resistance to arc ablation, including the following components in weight percentage: Y 0.004%, Sb 0.02%, Ti 0.09%, Bi 0.12%, Co 0.01%, Mn 0.06%, Ag 0.12%, B 0.015-0.05%, Zr 0.002%, and the balance is tungsten carbide.

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PUM

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Abstract

The invention discloses a tungsten carbide based electrical contact material highly resistant to arc ablation, which includes the components by weight percent: 0.002-0.01% of Y, 0.01-0.25% of S0, 0.03-0.40% of Ti, 0.05-0.50% of Bi, 0.008-0.05% of Co, 0.04-0.26% of Mn, 0.07-0.38% of Ag, 0.009-0.08% of B, 0.001-0.009% of Zr, and the remaining amount of tungsten carbide. Preferably, the electrical contact material comprises the components by weight percent: 0.004-0.008% of Y, 0.02-0.22% of S0, 0.09-0.35% of Ti, 0.12-0.45% of Bi, 0.01-0.04% of Co, 0.06-0.23% of Mn, 0.12-0.34% of Ag, 0.015-0.05% of B, 0.002-0.008% of Zr, and the remaining amount of tungsten carbide. The tungsten carbide based electrical contact material of the invention has the characteristics of good electrical conductivity, high hardness, abundant resources, wear resistance and low cost.

Description

technical field [0001] The invention relates to an electric contact material, in particular to a tungsten carbide-based electric contact material with high resistance to electric arc ablation. Background technique [0002] At present, electrical contact materials can be roughly divided into the following categories: silver-based contact materials, tungsten-based contact materials, copper-based contact materials, and noble metal-based weak current contact materials. Among them, the most representative contact material is Cu-W alloy and Ag-based contact material (AgSnO 2 , AgCdO, Ag-W series, etc.) two categories. Since W, Ag, etc. are precious metals, the resource reserves are limited, and the use of such precious metals as raw materials makes the cost of contact materials too expensive, which is not conducive to popularization and application. In addition, the existing contact materials have poor wear resistance and are difficult to use on sliding contacts. [0003] There...

Claims

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Application Information

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IPC IPC(8): H01H1/0233
CPCH01H1/0233
Inventor 傅永红
Owner 傅永红