基于非均匀淬火工艺的H型钢应力及相变研究  

Study on Stress and Phase Transformation of H-Beams During Non-uniform Quenching Process

作　　者：肖秀萍 李天祥 王旭[1] 高鹏[1] 任建民[1] 王昭东[2] Xiao Xiuping;Li Tianxiang;Wang Xu;Gao Peng;Ren Jianmin;Wang Zhaodong(School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [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：《山西冶金》2023年第12期108-110,共3页Shanxi Metallurgy

基　　金：大学生创新创业训练计划项目“基于温度场和残余应力分析的大型H型钢淬火系统优化”(S202210148036)。

摘　　要：针对H型钢断面形状复杂,容易产生局部淬火变形和微观组织分布不均的问题,以Q460材质H型钢为研究对象,通过合理划分冷却区,设计了一种非均匀淬火工艺。以DEFORM数值模拟为研究手段,对比分析了非均匀淬火工艺和等强度淬火工艺下H型钢的应力应变分布和马氏体转变行为,论证了非均匀淬火工艺的可行性。结果表明:非均匀强度淬火H型钢腹板处降温速度小于等强度淬火工艺,该工艺降低了该处局部应力和变形;非均匀淬火工艺能够完成充分的马氏体相变过程,从而保证了预期的材料性能。Due to the intricate cross-sectional configuration of H-beams,they are susceptible to localized quenching distortions and uneven microstructural distribution.In this paper,a novel non-uniform quenching technique is devised through a judicious partitioning of cooling regions.Through numerical simulation analysis,the non-uniform strength quenching process is shown to exhibit a lower cooling rate at the flange location of H-beams compared to the uniform-strength quenching process,thereby reducing quenching-induced stress and deformation in that area.Simultaneously,the non-uniform quenching process facilitates the completion of a comprehensive martensitic transformation,thereby ensuring the desired material performance.

关 键 词：H型钢 淬火工艺 淬火变形 马氏体相变 数值模拟 

分 类 号：TG156.31[金属学及工艺—热处理]