高铝玻璃化学钢化的制备工艺优化研究

Research on the Optimization of the Preparation Process of Chemical Strengthening of High Alumina Glass

通过对玻璃化学钢化的工艺流程研究,对高铝玻璃化学钢化的制备工艺进行了优化。相较于钠钙玻璃化学钢化工艺,在高铝玻璃的过程中钢化装载装置的选材上采用316L奥氏体不锈钢材,钢化架齿条设计为配置齿距为0.5 mm的算珠状齿条;获取更高的表面应力时,高铝玻璃需要比钠钙玻璃更长,时间控制在9~11 h,温度范围精确控制在±3℃;钢化后由高温到低温的缓冷过程中,300℃以上需自然冷却;300℃以下时,采用分阶段增加降温风机的频率方式施加外部冷却方式,逐渐降低温度。在收片时保持玻璃表面温度与外界空气温差在60~90℃之间,翘曲形变控制在0.25 mm以内。

By studying the process of glass chemical strengthening, Optimized the preparation process of highalumina glass chemical strengthening. Compared with the chemical strengthening process of sodium calcium glass, 316 L austenitic stainless steel is used in the selection of the toughened loading device in the process of high aluminum glass, the steel rack is designed to be equipped with a bead rack with a pitch of 0.5 mm. When obtaining higher surface stress, the high-alumina glass needs to be longer than the sodium-calcium glass, the time is controlled in 9-11 hours, and the temperature range is precisely controlled in ±3 ℃. In the process of tempering from high temperature to low temperature after toughening, natural cooling is required above 300 ℃;When the temperature is below 300 ℃, external cooling is applied by increasing the frequency of the cooling fan in stages to gradually reduce the temperature. Keep the temperature difference between the glass surface temperature and the outside air between 60 ℃ and 90 ℃, and keep the warping deformation within 0.25 mm.