Journal of South China University of Technology(Natural Science) >

2023 , Vol. 51 >Issue 5: 122 - 129

DOI: https://doi.org/10.12141/j.issn.1000-565X.220363

Mechanical Engineering

Analysis of Temperature Uniformity of Pulp Molding Hot Pressing Heating Plate Based on Fluent Simulation

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  • 1.School of Mechanical and Automotive Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
    2.Shaoguan Hongqian Intelligent Equipment Technology Co. ，Ltd. ，Shaoguan 512029，Guangdong，China
吴上生（1963-），男，博士，教授，主要从事精密机械设计理论、自动化生产线设计、机电一体化技术及其应用研究。

Received date: 2022-06-10

  Online published: 2022-10-20

Supported by

the Science and Technology Planning Project of Guangdong Province(2021440002002290)

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Abstract

In-mold hot-pressing is a common drying method in the production of pulp moulded tableware. The wet paper mold embryo obtained after moulding is heated under the condition of extrusion and vacuum. Heating plate is the heat source of hot-pressing machine, and the temperature uniformity of its working surface affects the drying quality of products. Aiming at the temperature non-uniformity of the heating plate in the process of pulp molding hot pressing, this paper proposed an optimization method which combined simulation and orthogonal experiment. Firstly, the working process of heating plate was analyzed and the heat transfer model of heating plate was established. Then, based on Fluent, the temperature field was simulated numerically. According to the results of temperature field distribution, the high-temperature area and low-temperature area in the oil circuit structure were staggered as far as possible, and four new labyrinth oil circuit structures were designed. Finally, an orthogonal test with 4 factors and 4 levels was designed based on the structure of oil circuit, the plane height of oil circuit, the thickness of heating plate and the section diameter of oil circuit, and the range analysis and variance analysis were carried out. The results show that during the actual drying process, the maximum temperature and minimum temperature of the working surface are 224.47 ℃ and 209.92 ℃, respectively, and the temperature range is as high as 14.55 ℃ and the temperature standard deviation is 3.01 ℃. The thickness of heating plate and the diameter of oil passage have a significant influence on the temperature difference, and the structure of oil passage has a significant influence on the temperature standard deviation. Based on the above analysis, the structure of heating plate was improved. Compared with the original design, the temperature range of the working surface of heating plate has been reduced to 7.27 ℃ and the temperature standard deviation has been reduced to 1.09 ℃, which ensures the uniformity of temperature of heating plate and improves the quality of pulp molded products.

Key words： molded pulp; heating plate; temperature distribution; orthogonal test

Cite this article

WU Shangsheng, HU Jinrong, ZHOU Yunqi . Analysis of Temperature Uniformity of Pulp Molding Hot Pressing Heating Plate Based on Fluent Simulation[J]. Journal of South China University of Technology(Natural Science), 2023 , 51(5) : 122 -129 . DOI: 10.12141/j.issn.1000-565X.220363

References

1 黄俊彦 ．纸浆模塑生产实用技术［M］．2版．北京：文化发展出版社，2008：22-34.
2 滑广军，廖泽顺，谢勇，等 ．基于Ansys的纸浆模塑模具加热板温度场分析及优化［J］．包装工程，2016，37（1）：78-82.
  HUA Guang-jun， LIAO Ze-shun， XIE Yong，et al ．Analysis and optimization of temperature field in pulp molding mold heating plate based on Ansys［J］．Packaging Engineering，2016，37（1）：78-82.
3 杨彬，孙宝寿，张雅灵，等 ．基于ANSYS Workbench热板电加热与油加热模拟及对比分析［J］．宁波大学学报（理工版），2017，30（5）：13-18.
  YANG Bin， SUN Baoshou， ZHANG Yaling，et al ．Comparative analysis：simulation of electrical heating and oil heating of hot plate using ANSYS workbench ［J］．Journal of Ningbo University （Natural Science & Engineering Edition），2017，30（5）：13-18.
4 徐京豫，孙宝寿 ．油压机热板温度场均匀性研究［J］．机械设计与研究，2019，35（1）：200-204.
  XU Jingyu， SUN Baoshou ．Analysis of surface temperature uniformity of heat conducting oil heating plate ［J］．Machine Design and Research，2019，35（1）：200-204.
5 刘鸣宇，李军霞，张弘玉，等 ．基于正交试验的胶带硫化机热板温度场研究［J］．煤炭工程，2021，53（11）：152-157.
  LIU Ming-yu， LI Jun-xia， ZHANG Hong-yu，et al ．Study on heating plate temperature field of conveyor belt vulcanizer based on orthogonal ［J］．Coal Engineering，2021，53（11）：152-157.
6 MALYGIN E， KRASNYANSKIY M， MOKROZUB V，et al ．Design optimization of heating plates for hydraulic presses ［J］．MATEC Web of Conferences，2017，129：01008/1-5.
7 WANG J， CHEN X， YU L，et al ．A novel method improving the temperature uniformity of hot-plate under induction heating ［J］．Proceedings of the Institution of Mechanical Engineers Part C：Journal of Mechanical Engineering Science，2021，235（1）：190-201.
8 张晨曦，王晋强，丁永生 ．基于Kriging模型的热板表面温度均匀性控制［J］．电子工艺技术，2019，40（4）：227-229，240.
  ZHANG Chenxi， WANG Jinqiang， DING Yongsheng ．Temperature uniformity control of hot plate surface based on Kriging model ［J］．Electronics Process Technology，2019，40（4）：227-229，240.
9 陈惠贤，冯国庆，王保增，等 ．基于温度场的层压机电加热板优化设计［J］．新技术新工艺，2013（9）：63-65.
  CHEN Huixian， FENG Guoqing， WANG Baozeng，et al ．Optimal design of electric heating plate of laminating machine based on temperature field ［J］．New Technology & New Process，2013（9）：63-65.
10 杨世铭，陶文铨 ．传热学［M］．4版．北京：高等教育出版社，2006：205-206.
11 殷术贵，郭伟科，黄栋，等 ．流延薄膜传热特性及冷却水量设计的仿真研究［J］．华南理工大学学报（自然科学版），2021，49（12）：23-34.
  YIN Shugui， GUO Weike， HUANG Dong，et al ．Simulation study on heat transfer characteristics and cooling water design for the casting film ［J］．Journal of South China University of Technology（Natural Science Edition），2021，49（12）：23-34.
12 MILLS K C ．Recommended values of thermophysical properties for selected commercial alloys［M］．Sawston：Woodhead Publishing，2002：64-67.
13 王野平，李翠娟，周韩 ．基于FLUENT的热压板通道布置设计优化［J］．机械设计，2012，29（3）：50-52.
  WANG Ye-ping， LI Cui-juan， ZHOU Han ．Optimization of hot platen channel layout design based on FLUENT ［J］．Journal of Machine Design，2012，29（3）：50-52.
14 何伟，黄春跃，梁颖 ．基于正交设计的LTCC基板微流道散热性能研究［J］．机械强度，2019，41（5）：1223-1227.
  HE Wei， HUANG Chunyue， LIANG Ying ．Research on heat dissipation of LTCC substrate microchannel based on orthogonal design ［J］．Journal of Mechanical Strength，2019，41（5）：1223-1227.
15 任露泉.试验优化设计与分析［M］．2版．北京：高等教育出版社，2003：10-25.
16 谢方伟，徐纯洁，万快弟，等 ．CDC减振器用先导阀参数协同优化设计［J］．华南理工大学学报（自然科学版），2021，49（2）：131-139.
  XIE Fangwei， XU Chunjie， WAN Kuaidi，et al ．Cooperative optimization design of pilot valve parameters for CDC shock absorber ［J］．Journal of South China University of Technology （Natural Science Edition），2021，49（2）：131-139.
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