硬聚氯乙烯轴向中空壁管冷却定型工艺优化与数值模拟  

Optimization and Numerical Simulation of Cooling Shaping Technique for PVC-U Axial Hollow-Wall Pipe

作　　者：郭泽元 胡少伟 陈伟[1] 金文粲 唐鹏飞 潘福渠 Zeyuan Guo;Shaowei Hu;Wei Chen;Wencan Jin;Pengfei Tang;Fuqu Pan(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430000,China;School of Civil Engineering and Architecture,Guangxi University,Nanning 530000,China;Yellow River Laboratory,Zhengzhou University,Zhengzhou 450000,China;Dongxin Plastic Technology Co.,Ltd.,Liaocheng 252000,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430000 [2]广西大学土木建筑工程学院,广西南宁530000 [3]郑州大学黄河实验室,河南郑州450000 [4]山东东信塑胶科技有限公司,山东聊城252000

出　　处：《高分子材料科学与工程》2024年第11期96-109,共14页Polymer Materials Science & Engineering

基　　金：国家重点研发计划(2022YFC3004401);国家自然科学基金重点项目(52130901);河南省自然科学基金资助项目(232300421003);泰山产业领军人才项目(tscx202306104)。

摘　　要：文中对外径500 mm的硬聚氯乙烯(PVC-U)轴向中空壁管的冷却定型过程进行了数值模拟研究与工艺优化。通过建立热传递模型和热力耦合模型研究了冷却方式、冷却时间、冷却温度和真空负压对管道冷却定型工艺的影响,并对冷却定型设备进行了优化设计。结果表明,在冷却水温为25℃、冷却时间为1500 s和真空负压-0.09 MPa的条件下,通过外径定型的真空喷淋式冷却定型工艺进行管道加工最为理想。工艺和设备优化后生产的管道成品内外径尺寸满足要求,弯曲度≤0.2%、不圆度≤0.14%、环刚度为9.47 kN/m^(2),环柔性良好。The present study conducted numerical simulation and technique optimization for the cooling and shaping technique of PVC-U axial hollow-wall pipe with an outer diameter of 500 mm.Utilizing established heat transfer and thermal coupling models,an investigation on the influence of cooling methods,cooling duration,cooling temperature,and vacuum negative pressure on the pipeline cooling and shaping technique was carried out.Additionally,the study involved the optimization of the cooling and shaping equipment design.The results indicate that,under the conditions of a cooling water temperature of 25℃,a cooling duration of 1500 s,and a vacuum negative pressure of-0.09 MPa,the vacuum spray shaping technique for outer diameter shaping is the most ideal for pipeline processing.After post-optimization,the produced pipeline exhibits dimensions within the required specifications,curvature≤0.2%,non-circularity≤0.14%,a ring stiffness of 9.47 kN/m^(2),and excellent ring flexibility.

关 键 词：轴向中空壁管 硬聚氯乙烯 冷却定型 数值模拟 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]