摘要
为了分析环境温度对聚合物片材成型温度的影响,根据冰箱内胆热塑成型工艺特点,分析了聚合物片材再加热过程中最主要的3种传热方式:热辐射、热传导和热对流,根据热电相似性理论、热辐射和热传导的电路等效模型,创建了考虑环境温度因素的等效热源;根据量纲分析,建立了聚合物片材温度响应预测模型。利用Electronics Workbench(EWB)软件进行仿真,结果表明:在聚合物片材再加热过程中,不考虑环境温度影响对比考虑环境温度(25℃)影响时,ABS片材最终成型温度大约高3℃;通过4组实验结果和预测结果比较分析,最大绝对误差为2.57%。该模型对聚合物片材再加热过程中的温度响应预测效果较好,为不同环境温度下的加热瓦温度设定值提供了理论依据。
In order to analyze the impact of environment temperature on the temperature of polymer sheet forming,according to the refrigerator liner thermoforming process characteristics,three main heat transfer methods of polymer sheet during heating were analyzed： heat radiation,heat conduction and thermal convection. By studying the thermoelectric similarity theory,the equivalent model of thermal radiation and heat conduction,an equivalent heat source that takes into account environment temperature factors was created; according to the theory of dimensional analysis,the prediction model of temperature response of polymer sheet was established. Simulation was conducted with Electronics Workbench（ EWB） software. Results show that in the process of polymer sheet heating,ABS sheet final forming temperature without the consideration of emvironment temperature is about 3 ℃ higher than that with the consideration of environment temperature of 25 ℃; the maximum absolute error is 2. 57% by comparing the four experimental results with the prediction results. The model has good prediction ability on the temperature response of the polymer sheet during the reheating process,and provides a theoretical basis for setting the heating tiles at different environment temperatures.
作者
黄康
杨羊
樊增辉
朱仁胜
陶兆胜
潘毅
HUANG Kang YANG Yang FAN Zeng-hui ZHU Ren-sheng TAO Zhao-sheng PAN Yi(School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China Anhui League Electromechanical Equipment Manufacturing Co. Ltd. , Chuzhou 239001, China Chuzhou Automobile and Household Electrical Appliance Technology and Equipment Research Institute, Chuzhou 239000, China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2017年第5期205-211,共7页
Journal of Plasticity Engineering
基金
安徽省科技攻关计划资助项目(1604a0902135)
关键词
热成型
热电模型
冰箱内胆
热辐射
热传导
thennoforming
thermoelectric model
refrigerator liner
thermal radiation
heat conduction
