覆膜铁熔融覆膜过程界面传热与熔膜填充行为研究

doi:10.3901/JME.2023.06.061

机械工程学报 ›› 2023, Vol. 59 ›› Issue (6): 61-71.doi: 10.3901/JME.2023.06.061

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覆膜铁熔融覆膜过程界面传热与熔膜填充行为研究

张勃洋¹, 张清东¹, 耿力博¹, 刘吉阳¹, 石允飞²

1. 北京科技大学机械工程学院北京 100083;
2. 清华大学精密仪器系北京 100084

收稿日期:2022-05-30 修回日期:2022-09-27 出版日期:2023-03-20 发布日期:2023-06-03
通讯作者: 张清东(通信作者),男,1965年出生,博士,教授,博士研究生导师。主要研究方向为板带轧制与板形厚度表面控制,塑性成形装备与工艺界面力学行为,薄带屈曲与皱曲。E-mail:zhang_qd@me.ustb.edu.cn
作者简介:张勃洋,男,1989年出生,讲师。主要研究方向为钢板微观表面质量控制、大型冶金机械设备力学行为。E-mail:zhangby@ustb.edu.cn
基金资助:
国家自然科学基金(U1760106)和中央高校基本科研业务费专项资金(FRF-TP-19-039A2Z)资助项目。

Study on Interface Heat Transfer and Polymer Film Melting-Filling Behavior During the Laminating Process for Laminated Steel

ZHANG Boyang¹, ZHANG Qingdong¹, GENG Libo¹, LIU Jiyang¹, SHI Yunfei²

1. School of Mechanical Engineering, University of Science and Technology, Beijing 100083;
2. Department of Precision Instrument, Tsinghua University, Beijing 100084

Received:2022-05-30 Revised:2022-09-27 Online:2023-03-20 Published:2023-06-03

摘要/Abstract

摘要： 覆膜铁是金属包装领域的新型复合材料。成品覆膜铁的界面结合强度和水透性取决于覆膜过程中高聚物薄膜熔融层的厚度和流动铺展行为。但覆膜过程复杂而迅速，且受钢板表面微观形貌影响，熔融层膜厚及其流动铺展行为难以精细调控。针对此，基于分形理论表征与重构基板带钢表面微观形貌；基于广义Maxwell模型试验建立聚合物膜的黏弹性本构关系；建立了考虑基板带钢表面微观形貌的覆膜过程有限元仿真模型，并试验验证了模型的准确性。研究表明，熔融层膜厚主要受基板带钢初始预热温度影响，界面填充率则主要受覆膜辊压力影响。高聚物膜熔融层厚度和界面填充率随基板带钢粗糙度降低以及基板带钢和覆膜辊初始预热温度增加而增加，且辊压力增加也导致界面填充率增加。这些规律被定量化描述，为精细化调控熔融层膜厚及其流动铺展行为提供了理论依据。

关键词: 覆膜铁, 界面传热, 熔融填充, 预热温度, 微观形貌, 覆膜辊压力

Abstract: Laminated steel is a new type of composite material in the field of metal packaging. The interfacial bond strength and water permeability of the finished laminated steel depend on the thickness and flow-spreading behavior of the molten layer of the polymer film during the laminating process. However, it is difficult to tune the thickness of the molten layer and its flow-spreading behavior, because the laminating process is complex and rapid, and affected by the microscopic topography of the substrate surface. Aiming at this difficulty, the microscopic topography of the substrate surface was characterized and reconstructed based on the fractal theory, the viscoelastic constitutive relation of the polymer film was established based on the generalized Maxwell model experiment, hence a finite element simulation model of the laminating process considering the microscopic topography of the substrate was established, and the accuracy of the model was experimentally verified. The model results show that the thickness of the molten layer is mainly affected by the initial preheating temperature of the substrate strip, and the interface filling ratio is mainly affected by the pressure of the laminating roll. The molten layer thickness and the interfacial filling ratio increase with the decrease of the roughness of the substrate strip and the increase of the initial preheating temperature of the substrate strip and the laminating roll, and the increase of the roll pressure also leads to the increase of the interfacial filling ratio. These laws were quantitatively described, which provides a theoretical basis for fine-tuning the thickness of the molten layer and its flow-spreading behavior.

Key words: laminated steel, interface heat transfer, melting-filling, preheating temperature, microscopic morphology, laminating roll stress

中图分类号:

TB484

张勃洋, 张清东, 耿力博, 刘吉阳, 石允飞. 覆膜铁熔融覆膜过程界面传热与熔膜填充行为研究[J]. 机械工程学报, 2023, 59(6): 61-71.

ZHANG Boyang, ZHANG Qingdong, GENG Libo, LIU Jiyang, SHI Yunfei. Study on Interface Heat Transfer and Polymer Film Melting-Filling Behavior During the Laminating Process for Laminated Steel[J]. Journal of Mechanical Engineering, 2023, 59(6): 61-71.

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覆膜铁熔融覆膜过程界面传热与熔膜填充行为研究

Study on Interface Heat Transfer and Polymer Film Melting-Filling Behavior During the Laminating Process for Laminated Steel

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