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Toughening of glass with low thermal stress factor - by heating glass to below its softening point, and then quenching via sprayed mixt. of water and air
Toughening of glass with low thermal stress factor - by heating glass to below its softening point, and then quenching via sprayed mixt. of water and air
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机译：热应力系数低的玻璃的增韧-将玻璃加热至其软化点以下，然后通过喷涂的混合物淬火。水和空气
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The glass has a thermal stress factor (TSF) of 0.2-0.5 N/sq.mm/ deg.K; and is heated to above its relaxation temp. but below its softening temp. The hot glass is then quenched using a spraying nozzle providing a mixt. of liq. and air. The nozzle is fed with 0.1-5 litres/ h liq., and 0.1-10 cu.m/h air, the ratio liq.:air being 0.1-5 litres/cu.m air. The pref. liq. is water, or a mixt. of water and an organic solvent which readily evaporates. The drops of the sprayed liq. pref. have a dia. of 1-100 microns. The glass pref. has a softening point of max. 800 deg.C and is located at 30-200 mm from the nozzle. When several nozzles are used, they are pref. 30-60 mm apart from each other. Process gives min. bending strength for the glass of 120 N/sq.mm after the glass has been wet abraded with abrasive grains of size 220.
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机译：玻璃的热应力因子（TSF）为0.2-0.5 N / sq.mm / deg.K;并加热到其松弛温度以上。但低于其软化温度。然后使用提供混合物的喷嘴将热玻璃淬火。的液量和空气。向喷嘴供给0.1-5升/小时液量和0.1-10立方米/小时的空气，液：空气比为0.1-5升/立方米空气。偏好。液体是水或混合物。水和易蒸发的有机溶剂。喷雾液滴。偏好有一个直径。 1-100微米。玻璃偏好。具有最大软化点800摄氏度，位于距喷嘴30-200毫米处。当使用多个喷嘴时，它们是优选的。彼此间隔30-60毫米。过程给出了最小值用220号磨料湿磨玻璃后，玻璃的抗弯强度为120 N / sq.mm。
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