东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (5): 641-646.DOI: 10.12068/j.issn.1005-3026.2019.05.007

• 材料与冶金 • 上一篇    下一篇

真空渗碳炉加热系统结构优化数值模拟研究

刘静， 李家栋， 王昊杰， 王昭东   

  1. (东北大学 轧制技术及连轧自动化国家重点实验室， 辽宁 沈阳110819)
  • 收稿日期:2018-03-23 修回日期:2018-03-23 出版日期:2019-05-15 发布日期:2019-05-17
  • 通讯作者: 刘静
  • 作者简介:刘静(1989-)，女，湖北襄阳人，东北大学博士研究生; 王昭东(1968-)，男，安徽淮南人，东北大学教授，博士生导师.
  • 基金资助:
    国家重点基础研发计划项目(2017YFB0306400).

Numerical Simulation to Optimize Heating System in Vacuum Carburizing Furnace

LIU Jing， LI Jia-dong， WANG Hao-jie， WANG Zhao-dong   

  1. State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， China.
  • Received:2018-03-23 Revised:2018-03-23 Online:2019-05-15 Published:2019-05-17
  • Contact: LI Jia-dong
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摘要： 为了优化加热系统结构，保证真空渗碳炉加热性能，采用COMSOL有限元软件建立真空渗碳炉加热过程数值模型，分析了加热系统中石墨加热管的数量、长度和分布半径等关键结构参数对工件表面热流密度、有效加热区温度分布的影响规律.模拟结果表明:加热功率恒定，减小加热管数量、长度和分布半径均可以使工件表面热流密度增大，加热效率提高;将加热管数量设为偶数，并适当减小加热管长度，增加加热管分布半径可以显著改善有效加热区内温度分布均匀性.该研究结果对真空渗碳炉加热系统结构设计优化具有一定指导意义.

关键词: 真空渗碳炉, 加热系统, 结构优化, 加热效率, 温度均匀性, 数值模拟

Abstract: In order to optimize the structure of heating system and improve heating efficiency， a numerical model was built to study heating transfer in vacuum carburizing furnace using COMSOL finite element software. The effects of key structural parameters such as number， length and distribution radius of graphite heating tube on the heat flux of workpiece surface and the temperature distribution of effective heating zone were studied. The results show that when the number， length and distribution radius of heating tubes decrease， the heat flux density increases and the heating efficiency improves. Moreover， when setting the number of heating tubes into even， decreasing the length and increasing the distribution radius can improve the temperature uniformity in effective heating zone. The findings can provide guidelines to optimize the structure of heating system in vacuum carburizing furnace.

Key words: vacuum carburizing furnace, heating system, structure optimization, heating efficiency, temperature uniformity, numerical simulation

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