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Preparation method of high strength gas discharge electrode

A gas discharge and gas electrode technology, which is applied in the field of preparation of high-intensity gas discharge electrodes, can solve the problems of increased light decay and shortened life, and achieve the effects of prolonging life, reducing sputtering, and densely arranged between grains

Inactive Publication Date: 2010-09-22
周义华 +3
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  • Application Information

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Problems solved by technology

The electrode discharge end is prone to sputtering during the ignition of the high-intensity gas discharge light source, resulting in reduced life and increased light decay. At present, there is no effective way to deal with the electrode discharge end, resulting in a dense metallographic structure at the electrode discharge end. Reduce the sputtering of the electrode during the ignition of the high-intensity gas discharge light source, and improve the life and light maintenance rate of the high-intensity gas discharge light source

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  • Preparation method of high strength gas discharge electrode
  • Preparation method of high strength gas discharge electrode

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Embodiment Construction

[0010] A preparation method of a high-strength gas discharge electrode is to perform instantaneous high-temperature melting treatment on the discharge end of the discharge electrode. Large current discharge, or by irradiating laser light to the discharge end of the electrode, the instantaneous melting time of the discharge end of the electrode is 0.01-10 seconds, the length of the melting part of the discharge end of the electrode is 0.01-5mm, and the discharge The melting temperature of the tip is 3400°C-3800°C.

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Abstract

The invention discloses a preparation method of a high strength gas discharge electrode. By instantaneously fusing the discharge end part of the electrode with high temperature, oxygen content and purities of fusion part are eliminated, the metallographic structure of the discharge end part of the high strength gas discharge electrode is improved, the metallographic structure is densified, the sputtering of the discharge electrode in the high strength gas discharge light source igniting process is reduced and consequently, the service life of the high strength gas discharge light source is prolonged and the lumen maintenance therefore is improved.

Description

technical field [0001] The invention relates to the field of gas discharge electrodes, in particular to the preparation of high-strength gas discharge electrodes. Background technique [0002] A high-intensity gas discharge electrode, including high-pressure mercury lamps, high-pressure sodium lamps, quartz metal halide lamps, ceramic metal halide lamps, high-pressure xenon lamps, automotive quartz metal halide headlights, ultra-high pressure mercury lamps, mercury-free lamps, etc. Intensity gas discharge lamp electrodes also include arcing emitter electrodes for laser light sources and emitter electrodes made of various metal materials for military light sources. The main component of existing high-intensity gas discharge electrodes is tungsten. Because the melting point of tungsten (3410°C) is too high, all tungsten electrodes are now manufactured using powder metallurgy technology, such as figure 1 As shown, the metallographic structure of the tungsten electrode produced...

Claims

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Application Information

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IPC IPC(8): H01J9/04
Inventor 周义华王能兵刘火根朱惠冲
Owner 周义华
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