QP钢汽车板热处理工艺与设备探讨  

Discussion on heat treatment technology and furnace for QP steel

作　　者：肖学文[1] 许秀飞[1,2] XIAO Xue-wen;XU Xiu-fei(CISDI Engineering Co.,Ltd.,Chongqing 401122,China;Xu Xiu-fei Expert Studio,Chongqing 401122,China)

机构地区：[1]中冶赛迪工程技术股份有限公司,重庆401122 [2]重庆市许秀飞专家工作室,重庆401122

出　　处：《轧钢》2020年第2期1-6,共6页Steel Rolling

基　　金：重庆市应用开发重大项目(cstc2013yykfC50002)。

摘　　要：通过对第3代超高强钢QP钢连续热处理工艺原理的分析,指出目前的带钢连续退火炉不能完全满足生产现代汽车板的需要,必须对其进行改进;在研究QP钢热处理工艺流程、生产的关键工艺要点、两步法工艺路线的基础上,对现代汽车板连续镀锌线、镀锌和冷轧两用线热工炉设计的要领进行了探讨,提出了典型的工艺流程布局设计方案,并分别说明了加热段、保温段、缓冷段、快冷段应有的技术要求,特别是对各钢种在过时效段所发生的转变进行了分析,阐明了新型热工炉过时效段的结构和技术要求。Based on the analysis of the principle of continuous heat treantment for QP steel automobile sheet,it pointed out that the current strip continuous annealing furnace can not be fully met the needs of producing QP automobile sheet,and it must be improved.Based on the study of heat treatment process of QP steel,the key technological points of production and the two-step process route,the design keys of heat treatmet furnaces were discussed for galvanizing line and dual-purpose line for galvanizing and cold rolling.The typical process layout was put forward,and the technical requirements of heating section,soaking section,slow cooling section and fast cooling section respectively were described.In particular,the changes of various steels in the over-aging period were analyzed,and the structure and technical requirements of the over-aging section of the new heat treatment furnace were decsribed.

关 键 词：高强钢热处理 QP钢 热处理炉 连续退火 镀锌 镀锌/冷轧两用线 

分 类 号：TG161[金属学及工艺—热处理] TG155[金属学及工艺—金属学]