Processing technology for reducing spontaneous explosion rate of tempered glass
A processing technology and tempered glass technology, applied in the direction of glass tempering, glass manufacturing equipment, glass/slag layered products, etc., can solve the problems of uneven stress distribution, warping and fracture, and achieve uniform stress distribution and reduced self-explosion rate. , the effect of low possibility of self-destruction
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Embodiment 1
[0037] A method of reducing the rate of glass blew process, comprising the steps of:
[0038] Sl, pre-glass substrate: glass substrate and selected according to production requirements, a cutting process of the glass base material; cutting the glass substrate after edging and cleaning; then the glass substrate was immersed in a nitrate solution (mass ) fraction of 40% sodium nitrite solution, taken out and placed in a high temperature oven at a rate of 10 ℃ / min heating to 500 ℃ preheating, the preheating time: the glass substrate (glass substrate selection of 4mm the thickness of metal), is heated in accordance with 80s / mm, to obtain a pre-heated glass substrate;
[0039] S2, tempering process: the pre-S1 is transferred to a glass substrate heated steel convection oven heated to 780 ℃ 420s and held, and then the glass substrate is conveyed to the gate of wind, cold air pressure of 15kPa glass cooling substrate, cooled to 220 deg.] C to continue after the water cooling 30 ℃, i....
Embodiment 2
[0043] A processing process that reduces the self-explosion rate of tempered glass, including the following steps:
[0044] S1, glass substrate pretreatment: Select the glass substrate and cut the glass substrate according to the production requirements; the glass substrate is cut back, and the glass substrate is pulsed; and the glass substrate is immersed in nitrate solution (quality) In the potassium nitrate aqueous solution of the fraction of 40%, it is taken in a high temperature furnace and then warmed up to 550 ° C in a rate of 30 ° C / min, preheating, preheating, according to the glass substrate (selected 4 mm glass base The thickness of the material is heated according to 60S / mm, which is preheated glass substrate;
[0045] S2, tempered treatment: transfer the preheated glass substrate in S1 into the convection steel furnace, warmed to 820 ° C and retain 300s, and then transport the glass substrate into the grating, refrigerated into a cold air of 17 kPa. The substrate ...
Embodiment 3
[0049] A processing process that reduces the self-explosion rate of tempered glass, including the following steps:
[0050] S1, glass substrate pretreatment: Select the glass substrate and cut the glass substrate according to the production requirements; the glass substrate is cut back, and the glass substrate is pulsed; and the glass substrate is immersed in nitrate solution (quality) In a 40% nitrate solution), it is preheated after the high temperature furnace is taken in a high temperature furnace and the rate of 15 ° C / min is raised to 520 ° C for preheating, and the preheated time is: according to the glass substrate (selected 4 mm glass base) The thickness of the material is heated according to 70s / mm, and the preheated glass substrate is obtained;
[0051] S2, tempered treatment: transfer the preheated glass substrate in S1 into the convection steel furnace, warmed to 800 ° C and retain 360s, and then transport the glass substrate into the grating, cold air to cold air...
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