不同形状不锈钢棒材热处理装炉系数数值模拟  

Numerical simulation of charging coefficient for heat treatment of stainless steel bars with different cross sections

作　　者：刘刚 任津毅 杨立新 马蓼奕 李长生[2] Liu Gang;Ren Jinyi;Yang Lixin;Ma Luyi;Li Changsheng(Shenyang Aircraft Corporation,Shenyang Liaoning 110034,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]沈阳飞机工业(集团)有限公司,辽宁沈阳110034 [2]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

出　　处：《金属热处理》2024年第6期254-260,共7页Heat Treatment of Metals

摘　　要：针对在真空炉热辐射条件下3种不同形状的不锈钢棒材(四方棒、圆棒和六方棒),采用有限元模拟技术并结合传热学原理,利用“等效圆棒直径对比法”构建了标准样库,开展了装炉系数确定方法研究,建立了不同场景下热处理加热间距与装炉系数的数学模型。结果表明,随着装炉间距的增大,3种不同形状棒材的相邻直径、条件厚度和装炉系数均呈逐渐减小的趋势,通过对比装炉系数可以发现,紧密排列的圆棒和六方棒的装炉系数明显小于四方棒的装炉系数。在实际生产不锈钢棒材时,在严格按照装炉系数规定并计算出正确的条件厚度的条件下,装炉可以不留间隙紧密排列。For three different cross sections of stainless steel bars(square,round and hexagonal)under vacuum furnace thermal radiation conditions,finite element simulation combined with heat transfer principles was used to construct a standard sample library by using the"equivalent circular bar diameter comparison method".A study was conducted on the determination method of charging coefficient,and mathematical models were established for the loading spacing and charging coefficient of heat treatment in different fields.The results show that as the loading distance increases,the adjacent diameters,conditional thicknesses and charging coefficients of the three different shapes of stainless steel bars gradually decrease.Comparing the charging coefficient,it can be found that the charging coefficients of tightly arranged round stainless steel bars and hexagonal stainless steel bars are significantly smaller than that of the square stainless steel bars.In the actual production of stainless steel bars,under the condition of strictly following the provisions of the charging coefficient and calculating the correct conditional thickness,the bars can be arranged tightly without leaving gaps during furnace charging.

关 键 词：不锈钢棒材 数值模拟 装炉系数 温度场 

分 类 号：TG156.95[金属学及工艺—热处理]