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Manufacturing method of high-strength LED (light-emitting diode) glass bulb

A technology of LED glass and manufacturing method, which is applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of high cost, low strength and impact resistance, and difficulty in forming special shapes, so as to prolong the service life, Good thermal stability and good appearance gloss

Inactive Publication Date: 2012-09-12
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the LED bulb mask materials use PC plus optical diffuser, and the fire protection level reaches 94VO level, but the cost is high, and the special shape process is difficult to form.
Glass masks have the characteristics of low cost, high light transmittance, can be formed into special shapes, and stable performance, etc., and are increasingly valued by merchants. However, the existing glass masks have defects of low strength and impact resistance, and it is difficult to replace PC masks. How to improve The strength and impact resistance of the glass mask is currently a bottleneck

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Potassium hydroxide, potassium fluoride, aluminum oxide, and diatomaceous earth additives are added to potassium nitrate molten salt to make potassium nitrate mixed molten salt. The dosage ratio of additives is KOH / KNO 3 1.5% by weight, KF / KNO 3 1% by weight, Al 2 o 3 / KNO 3 The percentage by weight is 1%, diatomaceous earth / KNO 3 The percentage by weight of the potassium nitrate mixture is 10%, and the prepared mixed molten salt of potassium nitrate is heated to 400°C for 2 hours to make the mixed molten salt homogenized, and then the cleaned spherical glass bulb is placed on a special shelf and fixed, and preheated Heat it at 350°C for 0.5h, then immerse it in 400°C mixed molten salt for heat preservation for 8h, take it out after the ion exchange is sufficient, anneal to room temperature, and make a high-strength LED spherical glass bulb after cleaning.

Embodiment 2

[0013] Potassium hydroxide, potassium fluoride, aluminum oxide, and diatomaceous earth additives are added to potassium nitrate molten salt to make potassium nitrate mixed molten salt. The dosage ratio of additives is KOH / KNO 3 0.5% by weight, KF / KNO 3 0.5% by weight, Al 2 o 3 / KNO 3 The percentage by weight is 1%, diatomaceous earth / KNO 3 The weight percentage of the potassium nitrate mixture is 10%, and the prepared potassium nitrate mixed molten salt is heated to 450°C for 3 hours to homogenize the mixed molten salt, and then the cleaned spherical bulb is placed on a special shelf and fixed, and preheated to 350°C, keep warm for 0.5h, then immerse it in 450°C mixed molten salt for heat preservation for 6h, take it out after ion exchange is sufficient, anneal to room temperature, and make high-strength LED spherical glass bulbs after cleaning.

Embodiment 3

[0015] Potassium hydroxide, potassium fluoride, aluminum oxide, and diatomaceous earth additives are added to potassium nitrate molten salt to make potassium nitrate mixed molten salt. The dosage ratio of additives is KOH / KNO 3 1% by weight, KF / KNO 3 0.3% by weight, Al 2 o 3 / KNO 3 The percentage by weight is 1%, diatomaceous earth / KNO 3 The percentage by weight of potassium nitrate is 10%. Heat the prepared potassium nitrate mixed molten salt to 480°C for 1 hour to homogenize the mixed molten salt. Then place the cleaned spherical bulb on a special shelf and fix it, and preheat it to 350°C, keep warm for 0.5h, then soak it in mixed molten salt at 480°C for 5h, take it out after ion exchange is sufficient, anneal to room temperature, and make high-strength LED spherical glass bulbs after cleaning.

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Abstract

The invention discloses a manufacturing method of a high-strength LED (light-emitting diode) glass bulb. The manufacturing method comprises the following steps: (1) preheating the LED glass bulb which is washed cleanly to the temperature of 350 DEG C, and performing heat preservation for 0.5h; (2) preparing mixed molten salt, heating to the temperature of 400-480 DEG C, performing the heat preservation for 1-3h, then immersing the LED glass bulb into the mixed molten salt with the temperature of 400-480 DEG C, soaking for heat preservation for 5-8h; and (3) after soaking, taking the LED glass bulb out of the mixed molten salt, annealing to room temperature, and washing to finally obtain the high-strength LED glass bulb, wherein the mixed molten salt is formed by mixing a potassium nitrate molten salt serving as a main raw material with additives including potassium hydroxide, potassium fluoride, aluminum oxide and diatomite. According to the manufacturing method disclosed by the invention, by adopting the mixed molten salt based on optimized proportion, the speed and the depth of ion exchange are improved, the surface compression stress of glass is increased, and the strength, the impact resistance and the thermal stability of the LED glass bulb are further improved.

Description

technical field [0001] The invention relates to the technical field of deep processing of LED lighting lamps, in particular to a manufacturing process of high-strength LED glass bulbs. Background technique [0002] At present, most of the LED bulb mask materials are made of PC plus optical diffuser, and the fire protection level reaches 94VO level, but the cost is high, and the special shape process is difficult to form. Glass masks have the characteristics of low cost, high light transmittance, can be formed into special shapes, and stable performance, etc., and are increasingly valued by merchants. However, the existing glass masks have defects of low strength and impact resistance, and it is difficult to replace PC masks. How to improve The strength and impact resistance of the glass mask is currently a bottleneck. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a high-strength LED glass bulb, which can improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/03
Inventor 彭寿马立云石丽芬王芸王东曹欣
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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