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鋼化玻璃的鋼化原理和用途
來(lái)源:www.szkingly.com 發(fā)布時(shí)間:2014-06-16


      蘭迪機(jī)器是一家專業(yè)從事鋼化爐研發(fā)、制造和銷售的高新技術(shù)企業(yè),為玻璃鋼化企業(yè)提供國(guó)際技術(shù)的各型玻璃鋼化設(shè)備。鋼化玻璃按生產(chǎn)方法可分為化學(xué)鋼化法和物理鋼化法兩種,玻璃鋼化爐是通過(guò)物理鋼化法對(duì)原片玻璃進(jìn)行鋼化,使玻璃具有良好的機(jī)械性能和耐熱抗震性能。
      化學(xué)鋼化法又叫離子交換法,化學(xué)鋼化是通過(guò)離子交換形成玻璃的表面壓應(yīng)力。離子交換工藝的簡(jiǎn)單原理是在400LC左右堿鹽溶液中,使玻璃表層中半徑 較小的離子與溶液中半徑較大的離子交換, 比如玻璃中的鋰離子與溶液中的鈉離子交換,玻璃中的鈉離子與溶液中的鉀離子交換,利用堿離子體積上的差別產(chǎn)生表層壓應(yīng)力。對(duì)厚玻璃的增強(qiáng)效果不甚明顯, 特別適合增 2~4mm厚的玻璃。用化學(xué)鋼化法制成的鋼化玻璃光學(xué)質(zhì)量好,強(qiáng)度高,適于用在飛機(jī)等場(chǎng)合的增強(qiáng)薄壁異形制品。
      物理鋼化法是目前國(guó)內(nèi)外廣泛應(yīng)用的一種方法。玻璃首先進(jìn)入蘭迪鋼化爐的加熱爐,在電爐中加熱到600LC左右,此溫度已達(dá)到玻璃的軟化點(diǎn)。然后將加熱的玻璃迅速送到冷卻工位,風(fēng)機(jī)的強(qiáng)大風(fēng)力通過(guò)風(fēng)柵均勻吹到玻璃的兩個(gè)大面,使玻璃迅速冷卻時(shí),其內(nèi)部的收縮是表面先降溫,內(nèi)部后降溫,當(dāng)內(nèi)部逐步冷卻時(shí),其內(nèi)部的收宿受到先期冷卻的外表層制約,于是在表層形成了壓應(yīng)力,在內(nèi)部形成了拉應(yīng)力。其中按淬冷介質(zhì)的不同,又可分為風(fēng)冷鋼化、液冷鋼化和冷卻板鋼化。
      鋼化玻璃的突出特點(diǎn)是強(qiáng)度高,它比優(yōu)質(zhì)的一般民用平板玻璃的強(qiáng)度高3~10倍。并且破碎時(shí)具有安全性能。因此,它被廣泛應(yīng)用于汽車業(yè)和建筑業(yè)。特別是在高層建筑上的大塊玻璃要承受較強(qiáng)的風(fēng)壓,此時(shí)采用鋼化玻璃尤為適用。鋼化玻璃不僅可以是無(wú)色透明的,也可以生產(chǎn)成彩色的吸熱和熱反射鋼化玻璃。還有彩色釉面鋼化玻璃,鋼化夾層防盜玻璃等品種。玻璃的厚度可在2~19mm之間確定。目前民用建筑常用的鋼化玻璃厚度為4~6mm,完全可以使用物理鋼化法的蘭迪鋼化爐進(jìn)行鋼化。鋼化玻璃在家庭裝修還可用于內(nèi)墻隔斷等處。

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