温差作用下大尺寸钢化真空玻璃性能研究  

Study on Performance of Large Size Tempered Vacuum Glass under Temperature Difference

作　　者：张红霞 ZHANG Hongxia(Luoyang Land Glass Machine Co.,Ltd.,Luoyang 471000,China)

机构地区：[1]洛阳兰迪玻璃机器股份有限公司,洛阳471000

出　　处：《玻璃》2023年第5期8-13,19,共7页Glass

摘　　要：温差作用下封边开裂是导致钢化真空玻璃失效的主要原因。不同封边工艺的真空玻璃,其耐两侧温差性能不同。针对金属封接的真空玻璃,通过温差变形失效试验和数值模拟,得出钢化真空玻璃温差变形失效时封边焊料的应力分布特征。结果表明:金属封接钢化真空玻璃温差变形失效的极限温差约为150℃;钢化真空玻璃温差变形均呈曲面且变形量与钢化真空玻璃长边尺寸为正相关关系;钢化真空玻璃受温差影响失效时,封边焊料应力分布大致相同,最大拉应力出现在钢化真空玻璃角点处;封边部位的极限应力大小为1.571 MPa,等效安全应力为0.943 MPa。The edge cracking under the action of temperature difference is the main reason for the failure of tempered vacuum glass.The vacuum glass prepared by different edge sealing technology has different resistance to temperature difference between the two sides.For the metal-sealed vacuum glass,when the thermal deformation failure occurs the stress distribution characteristics of edge-sealing solder is obtained by means of the deformation failure test under temperature difference and numerical simulation.The results show that the ultimate temperature difference of deformation failure of metal-sealed tempered vacuum glass is about 150℃.The deformation of the tempered vacuum glass due to temperature difference is curved and the deformation is positively correlated with the size of the long side of the tempered vacuum glass.When tempered vacuum glass fails due to temperature difference,the stress distribution of sealing solder is roughly the same.The maximum tensile stress occurs at the corner of the tempered vacuum glass.The extreme stress of the edge sealing part is 1.571 MPa,and the equivalent safety stress is 0.943 MPa.

关 键 词：钢化真空玻璃 温差 金属封接 安全应力 

分 类 号：TQ171[化学工程—玻璃工业]