中国塑料2026，Vol.40Issue(2)：61-69,9.DOI:10.19491/j.issn.1001-9278.2026.02.011
厚壁聚乙烯管热熔焊接力学性能影响机制建模与仿真研究
Modeling and simulation of influence mechanism of mechanical properties in butt fusion welding of thick-walled polyethylene pipes
王振超 1项爱民 2刘乐 3徐璐 4尤启江 4郄继春 4张秋菊5
作者信息
- 1. 江南大学智能制造学院,江苏 无锡 214122||罗森博格(无锡)管道技术有限公司,江苏 无锡 214161
- 2. 北京工商大学化学与材料工程学院,北京 100048
- 3. 无锡职业技术大学机械工程学院,江苏 无锡 214122
- 4. 罗森博格(无锡)管道技术有限公司,江苏 无锡 214161
- 5. 江南大学智能制造学院,江苏 无锡 214122
- 折叠
摘要
Abstract
Based on the theories of polymer crystallization kinetics and molecular chain reptation,this study elucidates the microstructural mechanisms governing butt fusion welding in polyethylene(PE)pipes.It identifies the initial tempera-ture field at the welding interface,and its dynamic evolution,as the central factor dictating the mechanical integrity of the welded joint.By approximating the interfacial thermal behavior as a two-dimensional heat transfer model,a quantitative relationship was established between key process parameters and the spatiotemporal distribution of the temperature field throughout the welding cycle.Using thermal simulation software and a controlled-variable methodology,the study sys-tematically quantified the effects of ambient conditions,including ambient temperature,wind speed,and heat source re-moval time,on the peak temperature and minimum interface temperature during welding.The research demonstrates that interfacial forces play a dominant role in shaping the initial temperature field.Furthermore,it reveals a nonlinear cou-pling between the maximum temperature in the molten zone and the minimum temperature at the interface.Notably,sin-gularities in the temperature gradient were observed during the dynamic evolution of the thermal field in thick-walled pipes under varying environmental conditions,phenomena not previously reported in the literature.These findings pro-vide a robust theoretical foundation for optimizing both welding protocols and on-site environmental controls in the fabri-cation of thick-walled PE pipe joints,ultimately enhancing weld quality and structural reliability.关键词
聚乙烯管/热熔焊接/影响机制/工艺参数/环境因子/建模/仿真Key words
polyethylene pipe/butt fusion welding/influence mechanism/process parameters/environmental factors/modeling/simulation分类
化学化工引用本文复制引用
王振超,项爱民,刘乐,徐璐,尤启江,郄继春,张秋菊..厚壁聚乙烯管热熔焊接力学性能影响机制建模与仿真研究[J].中国塑料,2026,40(2):61-69,9.
