700MPa级热轧高强厚规格耐候钢生产工艺研究  

Study of Production Technology of 700 MPa Grade Hot Rolled High Strength and Thick Weathering Steel

作　　者：刘晓翠 李文远 张转转[1] 徐伟[1] 周娜[1] 刘娟 LIU Xiaocui;LI Wenyuan;ZHANG Zhuanzhuan;XU Wei;ZHOU Na;LIU Juan(Beijing Shougang Co.,Ltd.;Research Institute of Technology of Shougang Group Co.,Ltd.)

机构地区：[1]北京首钢股份有限公司 [2]首钢集团有限公司技术研究院

出　　处：《首钢科技》2018年第6期32-35,共4页Shougang Science and Technology

摘　　要：采用低碳、低锰、铌钛微合金化和低镍铜比的成分体系,生产热轧高强厚规格耐候钢。通过优化板坯加热过程中的温度,通过控制轧制及采用超快冷工艺,充分发挥铌和钛的析出强化和细晶强化作用,获得综合力学性能优异的热轧高强厚规格耐候钢。Hot rolled high strength and thick weathering steel was produced by using low carbon,low manganese,Niobium-Titanium microalloying and low nickel-copper ratio composition system.By optimizing the temperature during slab reheating,controlled rolling and adopting ultra-fast cooling process,the precipitation strengthening and fine grain strengthening of niobium and titanium were brought into full play,and hot rolled high strength and thick weathering steel with excellent comprehensive mechanical properties was obtained.

关 键 词：厚规格 高强度 低镍铜比 析出强化 

分 类 号：TG142.7[一般工业技术—材料科学与工程]