DQ+T工艺在800MPa级高强钢开发中的研究与应用  

Research and Application of DQ+T Technology on 800MPa High Strength Plate Development

作　　者：吴德发 

机构地区：[1]山钢集团莱芜分公司银山型钢宽厚板事业部,山东莱芜271104

出　　处：《轧钢》2014年第3期5-8,共4页Steel Rolling

摘　　要：本文以莱钢4300mm宽厚板生产线MULPIC冷却系统生产Q890D高强钢为研究对象,通过对DQ冷却策略、水处理系统、生产组织及水比参数等进行优化,成功开发出800MPa级高强高韧钢。检验结果表明,采用在线淬火+离线回火工艺生产Q890D钢板,其组织为回火马氏体和回火索氏体,钢板力学性能优良,组织、性能均匀性好。In this paper, the MULPIC cooling system for producing Q890D high strength plate had been stud- ied in the 4300ram heavy plate production line in Laiwu Steel Co. ,Ltd. By optimizing DQ cooling strategies, water treatment systems, the organization of production and water ratio parameters, the 800MPa high strength and high toughness plate had been developed successfully. The results indicated that the Q890D plate micro- structure were tempered martensite and tempered sorbite using DQ＋T tecFmology, the mechanical properties and hardness were good and uniformity.

关 键 词：Q890D钢板 淬火十回火工艺 优化 组织性能 

分 类 号：TG156.3[金属学及工艺—热处理] TG156.5[金属学及工艺—金属学]