快速加热条件下注塑模具温度场分布研究  

Study of Temperature Distribution of Mold under Temperature Gradient in Rapid Heating Process

作　　者：谢知音 陈世强[1,2] 谭丽娟 吴进琴 秦柳 XIE Zhiyin;CHEN Shiqiang;TAN Lijuan;WU Jinqin;QIN Liu(School of Advanced Materials and Mechatronic Engineering, Hubei University for Nationalities,Enshi 445000,China;Ningbo Green Manufacture Future of New Material Technology, Ltd, Cixi 315300, China;Research Center of New Material Molding Process and Equipment, Enshi 445000, China)

机构地区：[1]湖北民族学院新材料与机电工程学院,湖北恩施445000 [2]新材料成型工艺及装备产学研中心,湖北恩施445000 [3]宁波波力维革环保设备科技有限公司,浙江慈溪315300

出　　处：《中国塑料》2019年第4期59-65,共7页China Plastics

摘　　要：基于传热数值传热学,采用Fluent在快速加热条件下研究了电加热棒功率、组间距离以及纵向距离等因素对型腔表面温度响应速率及表面温度均匀性的影响规律。结果表明,型腔表面温度响应速率随加热功率显著提高,但表面温度均匀度会变差;型腔表面温度响应速率随加热棒的组间距缩短,而略有提升但型腔表面温度均匀度会发生明显恶化;模具型腔表面温度响应速率随加热棒与型腔表面的距离减小显著提高,且对表面温度均匀度影响较小。In this paper, the heating process analysis based on a CFD method was conducted to investigate the effects of the power of electric heating rod, the distance between the groups and the longitudinal distance on the temperature response and surface temperature uniformity of the cavity surface. The results indicated that the temperature response rate of the cavity surface increased significantly with the heating power, and however, the surface temperature uniformity became worse. The surface temperature response rate of the cavity slightly decreased when shortening the group spacing of the heating rod, but the surface temperature uniformity of the cavity deteriorated significantly. The temperature response rate of the mold cavity surface decreased significantly with a decrease of the distance between the heating rod and the cavity surface, which almost did not generate any effects on the surface temperature uniformity. This study provides a theoretical reference for the mold design based on a rapid heating technology.

关 键 词：快变模温 电加热 模具热响应 数值仿真 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]