3D曲面玻璃热弯成形预热阶段传热过程研究  

Study on the Heat Transfer Process in the Preheating Stage of 3D Curved Glass Molding Process

作　　者：杨林锟 廖敦明[1] 张臻 明五一 YANGLin-kun;LIAO Dun-ming;ZHANG Zhen;MING Wu-yi(State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology,Hubei Wuhan 430074,China;Guangdong HUST Industrial Technology Research Institute,Guangdong Dongguan 523808,China)

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074 [2]广东华中科技大学工业技术研究院,广东东莞523808

出　　处：《机械设计与制造》2022年第11期202-207,共6页Machinery Design & Manufacture

基　　金：广东省“珠江人才计划”本土创新团队项目(2017BT01G167);国家自然科学基金-面上项目(51975228);广东省自然科学基金-面上项目(2020A1515010638)。

摘　　要：针对3D曲面玻璃热弯成形过程中的传热问题,解决其加热板、模具、玻璃之间的传热均匀性问题。根据理论分析,建立有限元温度场传热模型,分析玻璃与模具在预热阶段的温度变化。仿真实验表明:3D曲面玻璃热弯工艺下,预热后玻璃温度分布不均匀,最大极差达到15℃,且最高温度与预热温度之间也有约28℃的差值。另外,实验证实模拟结果与实验结果误差在10%以内,验证了仿真模型的有效性。进一步,基于有限元分析模型,采用正交试验方法研究了温度工艺参数对于预热后玻璃温度的影响,结果发现对于玻璃温度影响最大的是预热温度,而对于玻璃温度均匀性影响最大的是上下模预热温差。Aiming at the heat transfer problem in the 3D curved glass molding process,the heat transfer uniformity among the heating plate,mold and glass is solved.Based on theoretical analysis,a finite element-based temperature field heat transfer process model was established to analyze the temperature changes of glass and mold during the preheating stage.Simulation experiments show that:under the 3D curved glass molding process,the temperature distribution of the glass after preheating is uneven,the maximum range reaches 15℃,and the difference between the maximum temperature and the preheating temperature is about28℃.In addition,experiments confirm that the error between the simulation results and the experimental results is within 10%,which verifies the effectiveness of the simulation model.Furthermore,based on the finite element analysis model,the effect of temperature process parameters on the temperature of the glass after preheating was studied using orthogonal test methods.It was found that the most significant effect on the glass temperature was the preheating temperature,and the largest effect on the uniformity of the glass temperature Upper and lower mold preheating temperature difference.

关 键 词：温度场 3D玻璃 热弯成形 仿真 工艺分析 

分 类 号：TH16[机械工程—机械制造及自动化]