Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (5): 641-646.DOI: 10.12068/j.issn.1005-3026.2019.05.007

• Materials & Metallurgy • Previous Articles     Next Articles

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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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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