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VACUUM ›› 2026, Vol. 63 ›› Issue (3): 36-43.doi: 10.13385/j.cnki.vacuum.2026.03.05

• Vacuum Metallurgy and Thermal Engineering • Previous Articles     Next Articles

Recent Development on Design and Research of Thermal Screen for Vacuum Furnace

WANG Yuanhui1, ZHOU Mingxu1, LI Jianchang1, YUAN Hongfeng2, GONG Zhigang2   

  1. 1. Vacuum and Fluid Engineering Research Center, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China;
    2. Shantian New Materials Group Co., Ltd., Linyi 276700, China
  • Received:2024-12-28 Online:2026-05-25 Published:2026-06-01

Abstract: The thermal screen has a direct impact on the insulation efficiency and temperature uniformity of vacuum furnace, determining energy consumption and workpiece quality. This article summarizes the types, physical properties and physicochemical properties of thermal screen materials and enhanced coatings. Then, four basic structures of thermal screens were sorted out, and their applicable conditions were analyzed. Finally, the influencing factors and evaluation indicators of thermal insulation effects were summarized. To meet the high insulation and precise temperature control requirements for vacuum furnace, future efforts should be dedicated to the modular, regional and integrated design of novel metal-nonmetal composite thermal shields, aiming to achieve online intelligent monitoring and control of thermal screens under various operating conditions for different types of furnace.

Key words: vacuum furnace, thermal screen, thermal insulation efficiency, furnace temperature uniformity

CLC Number:  TF135;TG155

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