CN102659307A

CN102659307A - Manufacturing method of high-strength LED (light-emitting diode) glass bulb

Info

Publication number: CN102659307A
Application number: CN2012101413553A
Authority: CN
Inventors: 彭寿; 马立云; 石丽芬; 王芸; 王东; 曹欣
Original assignee: China Triumph International Engineering Co Ltd; Bengbu Glass Industry Design and Research Institute
Current assignee: China Triumph International Engineering Co Ltd; Bengbu Glass Industry Design and Research Institute
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2012-09-12

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

A kind of making method of HS LED glass bulb

Technical field

The present invention relates to LED head light deep process technology field, particularly a kind of manufacture craft of HS LED glass bulb.

Background technology

LED bulb face shield material adopts PC to add the optics diffusant mostly at present, and fire-protection rating reaches the 94VO level, but its cost is higher, and special shape technological forming difficulty.It is low that the glass face shield has a cost; Transmittance is high, can the moulding special shape, and characteristics such as stable performance; Obtain the attention of businessman day by day; But existing glass face shield exists intensity and the lower defective of shock resistance, is difficult to replace the PC face shield, and the intensity and the shock resistance that how to improve the glass face shield are when previous bottleneck problem.

Summary of the invention

The object of the present invention is to provide a kind of preparation method of HS LED glass bulb, under the situation that does not change LED glass bulb transmittance, improve intensity, shock resistance and the thermostability of LED bulb.

The objective of the invention is to be achieved through following technical scheme, a kind of making method of HS LED glass bulb is characterized in that; May further comprise the steps; (1) the LED glass bulb that cleans up is preheated to 350 ℃, insulation 0.5h, (2) preparation fused salt mixt also is heated to 400～480 ℃ of insulation 1～3h; Then 5～8h is soaked in insulation in the fused salt mixt of 400～480 ℃ of LED glass bulb immersions; (3) after immersion is accomplished, from fused salt mixt, take out the LED glass bulb and be annealed to room temperature, make high-intensity LED glass bulb after the cleaning;

Said fused salt mixt is to be major ingredient with the saltpetre fused salt, adds additive Pottasium Hydroxide, Potassium monofluoride, aluminum oxide, zeyssatite and mixes, and the mass percent that each additive add-on accounts for saltpetre is respectively:

KOH/KNO ₃Mass percent is 0.5～1.5%, KF/KNO ₃Mass percent is 0.3～1%, Al ₂O ₃/ KNO ₃Mass percent is 1%, zeyssatite/KNO ₃Mass percent is 10%.

Preferably, the mass percent that each additive amount accounts for saltpetre in the said fused salt mixt is respectively: KOH/KNO ₃Mass percent is 0.5%, KF/KNO ₃Mass percent is 0.5%, Al ₂O ₃/ KNO ₃Mass percent is 1%, zeyssatite/KNO ₃Mass percent is 10%.

The present invention adopts KOH and two kinds of accelerators of KF simultaneously, can remove the hydroxyl layer (≡ Si-OH) on LED glass bulb surface, destroys its surperficial network structure, utilizes OH again ^-, F ^-Reduce NO ₃ ^-To K ⁺The ionic restraining function promotes K ⁺Ion is to the glass internal divergence, so the nearly upper layer K of glass ⁺Amount of ions increases, and stress increases.Adopted more Al among the present invention simultaneously ₂O ₃And zeyssatite, effectively alleviate KOH and KF excessive erosion to glass surface, thus can not make that LED glass bulb surface is scared, thus can not have influence on translucent effect.Adopt the made LED globular bulb of the inventive method, the stressor layers degree of depth is thick, and bearing stress is more singly planted accelerator and improved more than 50%, more singly uses KNO ₃Intensity improves 120%; Resistance to impact shock can satisfy the requirement of fall down test; Transmittance 90%, the gloss appearance degree is good; Heat stability is good can sharply not ftracture under the variation at-20 ℃～120 ℃, increases the service life.

Embodiment

The making method of a kind of HS LED glass bulb provided by the present invention may further comprise the steps, and (1) is preheated to 350 ℃ with the LED glass bulb that cleans up; Insulation 0.5h; (2) preparation fused salt mixt and be heated to 400～480 ℃ of insulation 1～3h immerses in 400～480 ℃ the fused salt mixt insulation with the LED glass bulb then and soaks 5～8h, after (3) are soaked and accomplished; From fused salt mixt, take out the LED glass bulb and be annealed to room temperature, make high-intensity LED glass bulb after the cleaning;

Embodiment one

In the saltpetre fused salt, add Pottasium Hydroxide, Potassium monofluoride, aluminum oxide, zeyssatite additive, process the saltpetre fused salt mixt, the usage ratio of additive is KOH/KNO ₃Weight percent is 1.5%, KF/KNO ₃Weight percent is 1%, Al ₂O ₃/ KNO ₃Weight percent be 1%, zeyssatite/KNO ₃Weight percent be 10%, with the saltpetre fused salt mixt that configures be heated to 400 ℃ the insulation 2h, make the fused salt mixt homogenizing; Then the spherical glass bulb that cleans up is placed on the special-purpose shelf and fix; And being preheated to 350 ℃, insulation 0.5h immerses insulation processing 8h in 400 ℃ of fused salt mixts with it then; Treat to take out and be annealed to room temperature after the IX fully, just make high-intensity LED spherical glass bulb after the cleaning.

Embodiment two

In the saltpetre fused salt, add Pottasium Hydroxide, Potassium monofluoride, aluminum oxide, zeyssatite additive, process the saltpetre fused salt mixt, the usage ratio of additive is KOH/KNO ₃Weight percent is 0.5%, KF/KNO ₃Weight percent is 0.5%, Al ₂O ₃/ KNO ₃Weight percent be 1%, zeyssatite/KNO ₃Weight percent be 10%, with the saltpetre fused salt mixt that configures be heated to 450 ℃ the insulation 3h, make the fused salt mixt homogenizing; Then the globular bulb that cleans up is placed on the special-purpose shelf and fix; And being preheated to 350 ℃, insulation 0.5h immerses insulation processing 6h in 450 ℃ of fused salt mixts with it then; Treat to take out and be annealed to room temperature after the IX fully, just make high-intensity LED spherical glass bulb after the cleaning.

Embodiment three

In the saltpetre fused salt, add Pottasium Hydroxide, Potassium monofluoride, aluminum oxide, zeyssatite additive, process the saltpetre fused salt mixt, the usage ratio of additive is KOH/KNO ₃Weight percent is 1%, KF/KNO ₃Weight percent is 0.3%, Al ₂O ₃/ KNO ₃Weight percent be 1%, zeyssatite/KNO ₃Weight percent be 10%, with the saltpetre fused salt mixt that configures be heated to 480 ℃ the insulation 1h, make the fused salt mixt homogenizing; Then the globular bulb that cleans up is placed on the special-purpose shelf and fix; And being preheated to 350 ℃, insulation 0.5h immerses insulation processing 5h in 480 ℃ of fused salt mixts with it then; Treat to take out and be annealed to room temperature after the IX fully, just make high-intensity LED spherical glass bulb after the cleaning.

The foregoing description only is a preferred embodiments of the present invention; Technical conceive of the present invention and essential implementation have been specified; Be not to be that protection scope of the present invention is limited; All any simple modification that spirit is done according to the present invention and equivalent structure transformation or modification all should be encompassed within protection scope of the present invention.

Claims

1. the making method of a HS LED glass bulb is characterized in that, may further comprise the steps; (1) the LED glass bulb that cleans up is preheated to 350 ℃, insulation 0.5h, (2) preparation fused salt mixt also is heated to 400～480 ℃ of insulation 1～3h; Then 5～8h is soaked in insulation in the fused salt mixt of 400～480 ℃ of LED glass bulb immersions; (3) after immersion is accomplished, from fused salt mixt, take out the LED glass bulb and be annealed to room temperature, make high-intensity LED glass bulb after the cleaning;

2. according to the making method of claims 1 described a kind of HS LED glass bulb, it is characterized in that the mass percent that each additive amount accounts for saltpetre in the said fused salt mixt is respectively: KOH/KNO ₃Mass percent is 0.5%, KF/KNO ₃Mass percent is 0.5%, Al ₂O ₃/ KNO ₃Mass percent is 1%, zeyssatite/KNO ₃Mass percent is 10%.