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High-strength rare earth molybdenum tube cold cathode and manufacturing process thereof

A cold cathode, high-strength technology, used in cold cathode manufacturing, discharge tube cold cathode, discharge tube main electrode, etc., can solve the problems of unstable product performance, complex nickel cup production process, affecting performance stability, etc. The effect of increasing thermionic emission performance, low production cost and stable functional output

Inactive Publication Date: 2014-10-08
佛山宁宇科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, the atmospheric environment is seriously polluted, and the germicidal lamps and air purifiers in the Xinguang industry are developing rapidly. Such products must be made of quartz glass containing ultraviolet light. There are already germicidal lamps produced with nickel cold cathodes in the market. The disadvantages: 1 1. The high temperature resistance of nickel is poor, easy to oxidize and deform, so the working performance of the product is unstable; 2. Nickel cathodes can only produce small-function sterilization tubes, which are far from enough for large-area sterilization; 3. Since the nickel wire is welded at one end to At the bottom of the nickel cup, due to the small contact area between the two, about 5% of the nickel wire of the cold cathode falls off from the bottom of the nickel cup during the production process, and the failure rate is high, and the manufacturing process of the nickel cup is very complicated, and the processing cost high
This patent has the advantages of obtaining a multi-shot TWT cathode molybdenum cylinder with high processing precision, low process complexity and low cost, but, since the bottom of the cathode molybdenum cylinder has a bottom plate, it is easy to cause The local temperature of the cylinder is uneven, the power is unstable, and the stability of the performance is affected

Method used

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  • High-strength rare earth molybdenum tube cold cathode and manufacturing process thereof
  • High-strength rare earth molybdenum tube cold cathode and manufacturing process thereof
  • High-strength rare earth molybdenum tube cold cathode and manufacturing process thereof

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Embodiment 1

[0038] Such as figure 1 and figure 2 As shown, the present invention is a high-strength rare earth molybdenum tube cold cathode, which includes a rare earth molybdenum tube 1 and a molybdenum wire 2, and the molybdenum wire 2 is welded on the side of the rare earth molybdenum tube 1. One end of the molybdenum wire 2 is welded to the side of the rare earth molybdenum tube 1, and the other end is extended and bent to the bottom of the rare earth molybdenum tube 1 to form a support part 2-1, and the diameter of the bottom surface of the rare earth molybdenum tube 1 is 1 / 3-3 The / 4 position is bent and extended outward to form an inverted Z-shaped molybdenum tube support connection structure. In this embodiment, the molybdenum tube support part 2-1 formed by bending the molybdenum wire is a horizontal support close to the bottom end surface of the rare earth molybdenum tube, and the end of the horizontal support is bent and extended vertically downward. In order to avoid the la...

Embodiment 2

[0046] Such as image 3 and Figure 4 As shown, the molybdenum wire 2 is Y-shaped as a whole, and the two branches 2-2 on its upper part are respectively welded to the two sides of the rare earth molybdenum tube 1, and the two branches of the Y-shaped molybdenum wire 2 are connected with the vertical part. The connection part 2-3, the horizontal connection part spans the bottom end of the rare earth molybdenum tube.

Embodiment 3

[0048] The difference between this embodiment and Embodiment 1 is that, in terms of the material of the cold cathode, 100-6000 ppm of rare earth yttrium is added to the rare earth molybdenum tube, and 1200 ppm of rare earth yttrium is added in this embodiment. The purpose of adding rare earth yttrium is to solve the problems of low emission performance and high temperature resistance that are difficult to solve in the prior art, so that the electrodes can be aged slowly in the lamp tube, work more stably, and prolong the service life.

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Abstract

The invention discloses a high-strength rare earth molybdenum tube cold cathode and a manufacturing process thereof. The high-strength rare earth molybdenum tube cold cathode is characterized by comprising a rare earth molybdenum tube and a molybdenum wire, wherein the molybdenum wire is welded on the side portion of the molybdenum tube. The high-strength rare earth molybdenum tube cold cathode is simple in structure, convenient to manufacture and stable in performance and saves the cost.

Description

technical field [0001] The invention relates to a cold cathode for a cold light source, in particular to a rare earth molybdenum tube cold cathode and a preparation process thereof. Background technique [0002] The original cold cathode was invented by Japan and is used for sealing cold light tubes and hard glass. It is widely used as a backlight for flat-panel TVs. Its structure is nickel cup-iron-nickel alloy wire-magnesium-plated wire. The above structure has a low melting point and is not suitable for sealing. Nowadays, the atmospheric environment is seriously polluted, and the germicidal lamps and air purifiers in the Xinguang industry are developing rapidly. Such products must be made of quartz glass containing ultraviolet light. There are already germicidal lamps produced with nickel cold cathodes in the market. The disadvantages: 1 1. The high temperature resistance of nickel is poor, easy to oxidize and deform, so the working performance of the product is unstable;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/30H01J9/02
Inventor 朱惠冲
Owner 佛山宁宇科技股份有限公司
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