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Technique for processing fusing-seal of color kinescope port

A color picture tube and sealing technology, which is applied in the direction of manufacturing tools, electric tubes/lights off, glass reshaping, etc., can solve the problems of high production cost, low yield rate, complicated equipment, etc., and achieve simplified sealing production process, good economy The effect of benefit and production cost reduction

Inactive Publication Date: 2009-01-21
IRICO DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment used in the original process technology is very complicated. There are more than ten burner stations, and various high-purity industrial gases such as natural gas, coal gas, oxygen, nitrogen, and high-pressure air are used. It is difficult to control precision, and the yield rate is low. There are many work stations, the production process is complicated, and the production cost is high
And the present sealing technique is to use a kind of annular gas or natural gas burner, the annular gas or natural gas burner is in the left and right swing state all the time in sealing preheating, annealing process, and the temperature of the burner, the height of the burner are very important to the electron gun and the pipe neck position that will carry out sealing processing. It is difficult to effectively control the accuracy of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] First, heat the neck of the color picture tube and the core column of the electron gun, that is, preheat, and the preheating temperature is 500°C;

[0013] Seal the tube neck of the color picture tube and the core column of the electron gun by means of electric heating blower, and directly carry out preheating treatment. The preheating time is 100 seconds, the blowing flow rate is 10L / min, and the temperature is controlled at 20°C;

[0014] Use natural gas and oxygen annular burner to burn the sealing part of the tube neck, and the temperature range is 600 ° C; the glass at the sealing part of the tube neck of the color picture tube and the core column of the electron gun is melted and sealed together;

[0015] The annealing treatment is carried out on the color picture tube which has been sealed and melted. The annealing temperature is higher than the strain temperature of the glass for 40 seconds, the blowing flow rate is 10L / min, and the temperature control range is 5...

Embodiment 2

[0017] First, heat the neck of the color picture tube and the core column of the electron gun, that is, preheat, and the preheating temperature is 550°C;

[0018] The color picture tube neck and the core column of the electron gun are sealed by electric heating blower, and preheating treatment is carried out directly. The preheating time is 120 seconds, the blowing flow rate is generally 15L / min, and the temperature control range is 200°C;

[0019] Use natural gas and oxygen annular burner to burn the sealing part of the tube neck, and the temperature range is 700 °C; the glass at the sealing part of the tube neck of the color picture tube and the core column of the electron gun is melted and sealed together;

[0020] Carry out annealing treatment to the color picture tube that has been sealed and melted, the annealing temperature is higher than the strain temperature of the glass, the time is 80 seconds, the blowing flow rate is 15L / min, and the temperature control range is 25...

Embodiment 3

[0022] First, heat the neck of the color picture tube and the core column of the electron gun, that is, preheat, and the preheating temperature is 600°C;

[0023] The color picture tube neck and the core column of the electron gun are sealed by electric heating blower, and the preheating treatment is carried out directly. The preheating time is 150 seconds, the blowing flow rate is 20L / min, and the temperature control range is 450°C;

[0024] Use natural gas and oxygen annular burner to burn the sealing part of the tube neck, and the temperature range is 800 °C; the glass at the sealing part of the tube neck of the color picture tube and the core column of the electron gun is melted and sealed together;

[0025] The annealing treatment is carried out on the color picture tube which has been sealed and melt-sealed. The annealing temperature is higher than the strain temperature of the glass for 120 seconds, the blowing flow rate is 20L / min, and the temperature control range is 2...

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Abstract

The invention discloses a melt sealing technique for a chromoscope sealing, which uses the electro thermal blowing novel technique for the preheating and the annealing during the sealing, namely the sealing mainly completes the high-temperature melt sealing of the tube neck portion and the electron gun glass dish portion of the chromoscope, which belongs to the glass hot-working category, relates to the melt sealing between the tube neck glass and core column glass, the matching sealing-in between glass and a core column wire, and must solve the key techniques, such as the matching between the glass thermal expansion coefficient and the wire, the glass transformation temperature, the glass softening temperature, the glass anneal temperature and the like, since the preheating treatment and the annealing treatment directly affect the success rate of good sealing products, thereby the preheating treatment and the anneal treatment must be solved well to solve the techniques. With the novel technical technique which is disclosed by the invention, the yield of the sealing manufacture of the chromoscope can be greatly improved, and the sealing of products with novel tube type with various tube neck types can be guaranteed.

Description

technical field [0001] The invention relates to a color picture tube manufacturing process, in particular to a color picture tube sealing and melting treatment process. Background technique [0002] Sealing is a very critical process in the color picture tube manufacturing process. It is mainly to complete the high-temperature fusion sealing of the electron gun and the color picture tube neck, so that the two are sealed together and become a tube shell that can be evacuated. At present, the electron gun sealing technology adopted by all color picture tube manufacturers is the torch melting technology, and the sealing technology mainly includes three stages of preheating, melting sealing and annealing. The equipment used in the original process technology is very complicated. There are more than ten burner stations, and various high-purity industrial gases such as natural gas, coal gas, oxygen, nitrogen, and high-pressure air are used. It is difficult to control precision, an...

Claims

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Application Information

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IPC IPC(8): H01J9/40C03B23/20
Inventor 石笃笃牛建军刘国荣袁作臻
Owner IRICO DISPLAY DEVICES
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