陶瓷外墙砖坯釉爆裂原因的探讨  

Discussions on Bursting of Ceramics External Tile Body&Glaze

作　　者：闵云杰[1] 

机构地区：[1]江苏省陶瓷研究所,214221

出　　处：《江苏陶瓷》1999年第4期12-14,共3页Jiangsu Ceramics

摘　　要：简要叙述了辊道窑快速烧成陶瓷外墙砖出现的坯釉爆裂现象;通过以水代釉模仿工艺实验 ,初步证实了造成坯釉爆裂的直接原因是由于坯体施釉后 ,表层残留水分过多 ,进窑后遇到高的窑道预热温度 ,水分汽化速度过快 ;通过不同坯体温度和釉浆水分的系统试验 ,最终找到了坯釉爆裂的真正原因是施釉坯体温度低 ,机械水不能得到有效排除 ;继而提出了调高立式干燥器出坯温度 。The article briefly narrates bursting phenomena of body and glaze appeared in ceramics external tiles quickly fired in roller hearth kiln. The reason of bursting phenomena is that residual water in body skins after application of glaze is far too enough and the evoporization speed is far too fast in high initial heating. By systematic experiments of different body temperature and glaxe slip,the true reason id body glaze temperature is so low that mechanical water can not be effctively removed ,therefore the article puts forward such measures to deal with problems as heightening compact extraction temperature in vertical driers and reducing water content in glaze slip.

关 键 词：陶瓷 外墙砖 坯体温度 施釉 坯釉爆裂 

分 类 号：TQ174.76[化学工程—陶瓷工业] TQ174.66[化学工程—硅酸盐工业]