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Rhenium-tungsten multi-element transmitting filament and applications thereof

A multi-element, filament technology, applied in the manufacture of electrical components, discharge tubes/lamps, cathodes of transit-time electron tubes, etc. Harm, eliminate material brittleness, stabilize the effect of service life

Inactive Publication Date: 2010-02-03
朱惠冲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional emitting filament is generally thoriated tungsten wire, which has defects in current tolerance, working stability, etc., and has a short service life. It is easy to become brittle when carbonized at a high temperature of 2200 ° C, resulting in a high scrap rate and difficult process. Control, and it is difficult to completely pick out the waste products in the final inspection, and the product reliability is also low
And because thorium is a radioactive element, the use of thorium tungsten wire will inevitably cause harm to the human body in the process of manufacturing and product use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Powder mixing: mix 0.5% (weight percent) of rhenium powder with 99.5% (weight percent) of tungsten powder to obtain rhenium-containing alloy powder;

[0021] (2) The rhenium-containing alloy powder obtained in step (1) is pressed, then sintered at high temperature (2300°C) or hammer-melted, and further calcined into a rod, and then drawn to obtain a rhenium-tungsten multi-element emitting filament.

Embodiment 2

[0023] When mixing powders, the consumption of rhenium powder is 20% (percentage by weight), and the consumption of tungsten powder is 80% (percentage by weight). Others are the same as in Example 1.

Embodiment 3

[0025] During powder mixing, rhenium powder consumption is 38% (weight percentage), tungsten powder consumption is 62% (weight percentage), other is with embodiment 1.

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PUM

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Abstract

The invention discloses a rhenium-tungsten multi-element transmitting filament and applications thereof. The filament mainly consists of rhenium and tungsten. The filament has the advantages of stableworking performance, long service life, environmental protection, and brittleness and radiation elimination. The invention is mainly used for manufacturing transmitting filaments in transmitting tubes and magnetrons in microwave ovens, convection ovens and high-power microwave ovens.

Description

Technical field: [0001] The invention relates to an emitting filament. Background technique: [0002] The traditional emitting filament is generally thoriated tungsten wire, which has defects in current tolerance, working stability, etc., and has a short service life. It is easy to become brittle when carbonized at a high temperature of 2200 ° C, resulting in a high scrap rate and difficult process. Control and final inspection are also difficult to completely pick out waste products, and product reliability is also low. And because thorium is a radioactive element, the use of thorium tungsten wire will inevitably cause harm to the human body in the process of manufacturing and product use. Invention content: [0003] The object of the present invention is to provide a rhenium-tungsten multi-element emitting filament with stable operation and good use effect and its application. [0004] Technical solution of the present invention is: [0005] A rhenium-tungsten multi-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/04H01J9/02
Inventor 朱惠冲
Owner 朱惠冲
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