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A glass strengthening process that can shorten the strengthening time
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A glass strengthening and process technology, applied in glass production and other directions, can solve problems such as glass strength decline, and achieve the effects of improving processing efficiency, shortening strengthening time, and shortening processing cycle.
Active Publication Date: 2022-05-20
DONGGUAN JINGBO PHOTOELECTRIC BIT CO
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Abstract
Description
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Problems solved by technology
One problem with thinning is that the strength of the glass decreases as the thickness decreases
Method used
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Embodiment 1
[0039] A glass strengthening process capable of shortening the strengthening time, comprising the following steps:
[0040] (1) When the number of furnaces is 0-15, put the glass into molten potassium nitrate salt and strengthen it at 415°C for 5 hours;
[0041] (2) When the number of furnaces is 15-30-furnaces, put the glass into molten potassium nitrate salt and strengthen it at 390°C for 11 hours.
[0042] In the step (1), the glass is aluminosilicate glass, and by weight percentage, the aluminosilicate glass comprises the following components: SiO 2 : 58%, Al 2 o 3 : 16%, Na 2 O: 15%, K 2 O: 2.5%, MgO: 4.5%, CaO: 0.5%, B 2 o 3 : 0.5%, P 2 o 5 :0.1%, ZrO 2 : 0.2%, ZnO: 0.5%, TiO 2 : 1.5%, CeO 2 : 0.4%, SnO 2 : 0.3%.
Embodiment 2
[0044] A glass strengthening process capable of shortening the strengthening time, comprising the following steps:
[0045] (1) When the number of furnaces is 0 to 16, put the glass into molten potassium nitrate salt and strengthen it at 420°C for 4.5 hours;
[0046] (2) When the number of furnaces is 16 to 35, put the glass into molten potassium nitrate salt and strengthen it at 395°C for 9 hours.
[0047] In the step (1), the glass is aluminosilicate glass, and by weight percentage, the aluminosilicate glass comprises the following components: SiO 2 : 60%, Al 2 o 3 : 15%, Na 2 O: 14%, K 2 O: 2%, MgO: 4%, CaO: 1%, B 2 o 3 : 1%, P 2 o 5 :0.25%, ZrO 2 : 0.25%, ZnO: 1%, TiO 2 : 1%, CeO 2 : 0.25%, SnO 2 : 0.25%.
Embodiment 3
[0049] A glass strengthening process capable of shortening the strengthening time, comprising the following steps:
[0050] (1) When the number of furnaces is 0-18, put the glass into molten potassium nitrate salt and strengthen it at 425°C for 4 hours;
[0051] (2) When the number of furnaces is 18 to 40, put the glass into molten potassium nitrate salt and strengthen it at 400°C for 8 hours.
[0052] In the step (1), the glass is aluminosilicate glass, and by weight percentage, the aluminosilicate glass comprises the following components: SiO 2 : 62%, Al 2 o 3 : 14%, Na 2 O: 13%, K 2 O: 1.5%, MgO: 3.5%, CaO: 1.5%, B 2 o 3 : 1.5%, P 2 o 5 :0.3%, ZrO 2 : 0.4%, ZnO: 1.5%, TiO 2 : 0.5%, CeO 2 : 0.2%, SnO 2 : 0.1%.
[0053] The present invention can greatly shorten the strengthening time by appropriately increasing the strengthening temperature in the front number of furnaces, and can also obtain the required stress layer compression depth and stress layer compressio...
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Abstract
The invention relates to the technical field of strengthening glass cover plates, in particular to a glass strengthening process capable of shortening the strengthening time, comprising the following steps: (1) when the number of furnaces is 0 to (15-18), putting the glass into potassium nitrate In molten salt, strengthen at 415-425°C for 4-5h; (2) When the number of furnaces is (15-18)~(30-40), put the glass into potassium nitrate molten salt, Strengthen at 400℃ for 8‑11h. The present invention can greatly shorten the strengthening time by appropriately increasing the strengthening temperature in the front number of furnaces, and can also obtain the required stress layer compression depth and stress layer compression depth and the service life of the furnace salt by strengthening at the normal temperature in the back number of furnaces. No change, in the case of similar electricity consumption, the processing cycle can be shortened and the processing efficiency can be improved.
Description
technical field [0001] The invention relates to the technical field of glass cover plate strengthening, in particular to a glass strengthening process capable of shortening the strengthening time. Background technique [0002] In recent years, devices such as smartphones and tablet computers have become more and more popular, and they are showing a trend of thinning and lightweighting. One problem with thinning is that the strength of the glass decreases as the thickness decreases. In order to meet the requirements of use, the display glass must still have high strength at a small thickness. To achieve this, the glass needs to be strengthened. [0003] At present, in the composition of the aluminosilicate glass used, in order to ensure the ion exchange capacity and take into account factors such as glass meltability, formability, and devitrification resistance, the content of alkali metal oxides is relatively high. When strengthening aluminosilicate glass, because the gla...
Claims
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Application Information
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