电子束熔炼炉射线屏蔽的设计与计算

doi:10.13385/j.cnki.vacuum.2025.03.02

真空 ›› 2025, Vol. 62 ›› Issue (3): 9-14.doi: 10.13385/j.cnki.vacuum.2025.03.02

电子束熔炼炉射线屏蔽的设计与计算

牟鑫, 马强, 马海玲, 高元, 刘长青, 葛家希, 李心可

沈阳真空技术研究所有限公司,辽宁沈阳 110042

收稿日期:2024-10-26 出版日期:2025-05-25 发布日期:2025-05-23
作者简介:牟鑫（1982-）,男,山东高密人,高级工程师,硕士。

Design and Calculation of Radiation Shielding for Electron Beam Melting Furnaces

MU Xin, MA Qiang, MA Hailing, GAO Yuan, LIU Changqing, GE Jiaxi, LI Xinke

Shenyang Vacuum Technology Institute Co., Ltd., Shenyang 110042, China

Received:2024-10-26 Online:2025-05-25 Published:2025-05-23

摘要/Abstract

摘要： 电子枪是电子束熔炼炉的核心部件之一,其工作时会在熔炼室内产生大量X射线。熔炼室壁是简单且可有效屏蔽辐射的唯一屏障。为保证人员安全并满足国家相关标准要求,结合理论计算与几何结构分析,从炉壁板厚、内外板焊缝搭接形式、炉门缝隙拼接结构、观察窗铅玻璃厚度等角度对熔炼室进行了射线屏蔽设计,并通过现场测量对熔炼室的射线屏蔽效果进行了测试。结果表明,炉外人员可达区域辐射剂量率与环境本底相当,熔炼室可有效屏蔽X射线。

关键词: 电子束熔炼炉, X射线, 辐射防护

Abstract: Electron gun is one of the core components of electron beam melting furnace, which can generate considerable X-rays in the melting chamber during operation. The melting chamber wall is the only barrier for simple and effective radiation shielding. In order to ensure the personnel safety and meet the requirements of relevant national standards, the ray shielding design of the melting chamber was carried out from the furnace wall plate thickness, the overlap form of weld joints between inner and outer panels, the furnace door seam splicing structure and the thickness of lead glass for observation window, combined with theoretical calculations and geometric structural analysis. The radiation shielding effect of the melting chamber was tested through the field radiation measurements. The results show that the radiation dose rate in the area accessible to personnel outside the furnace is comparable to the environmental background, and the melting chamber can be effectively shielded from X-rays.

Key words: electron beam melting furnace, X-ray, radiation protection

中图分类号: TB756

牟鑫, 马强, 马海玲, 高元, 刘长青, 葛家希, 李心可. 电子束熔炼炉射线屏蔽的设计与计算[J]. 真空, 2025, 62(3): 9-14.

MU Xin, MA Qiang, MA Hailing, GAO Yuan, LIU Changqing, GE Jiaxi, LI Xinke. Design and Calculation of Radiation Shielding for Electron Beam Melting Furnaces[J]. VACUUM, 2025, 62(3): 9-14.

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电子束熔炼炉射线屏蔽的设计与计算

Design and Calculation of Radiation Shielding for Electron Beam Melting Furnaces

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