方形电子束熔炼炉真空腔体设计研究  

Design and Research on Vacuum Chamber of Square Electron Beam Melting Furnace

作　　者：宋涛[1] 张柏诚 姜正鹤 张黎源[1] SONG Tao;ZHANG Baicheng;JIANG Zhenghe;ZHANG Liyuan(Institute of Laser Technology,Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300181,China)

机构地区：[1]核工业理化工程研究院激光技术研究所,天津300181

出　　处：《真空》2025年第2期42-46,共5页Vacuum

基　　金：粒子输运与富集技术全国重点实验室基金项目(SYSJJ-22101)。

摘　　要：针对方形电子束熔炼炉真空腔体壁厚与加强筋选型设计困难的现状,提出了一套适用于方形电子束熔炼炉真空腔体的设计方法。首先确定炉体材料,然后根据法兰、开孔及抽气孔等孔位布置加强筋,以矩形加强筋为例,详细讨论了承载水压、气压条件下方形真空容器壁厚、加强筋之间板材所受最大弯矩、惯性矩、抗弯截面系数以及最大切应力的计算方法,最后通过仿真实验对设计的电子束熔炼炉真空腔体进行了验证。结果表明,所设计的电子束熔炼炉真空腔体在水、气载荷状态下的应力在35 MPa以内,小于材料的许用应力,计算结果与仿真结果具有较高的一致性,可满足类似方形电子束熔炼炉真空腔体的设计要求。A set of design methods suitable for the vacuum chamber of a square electron beam melting furnace is proposed to address the difficulties in selecting the wall thickness and reinforcing ribs.The method first confirms the furnace material for the vacuum chamber,and arranges reinforcing ribs according to the hole positions such as flanges,openings and exhaust holes,and calculates the wall thickness.Taking the rectangular reinforcing ribs as example,the calculation methods for the wall thickness,the maximum bending moment of the plate between the reinforcing ribs,inertia moment,section modulus in bending and shear stress on the neutral layer during bending of the square vacuum chamber under conditions of bearing water pressure and air pressure were discusses in detail.Finally,the as-designed vacuum chamber of the electron beam melting furnace was validated through simulation experiments.The results indicate that the stress of the vacuum chamber of the as-designed electron beam melting furnace under water and gas load conditions is within 35 MPa,which is lower than the allowable stress of the material.The calculation results of this method are highly consistent with the simulation results,it can meet the design requirements of vacuum chambers similar to square electron beam melting furnaces.

关 键 词：电子束熔炼炉 方形真空腔体 抗弯截面系数 真空选型 

分 类 号：TB79[一般工业技术—真空技术]