高强度含铌船板钢二冷配水优化研究  

Study on Optimization of Secondary Cooling Water for High-Strength Columbium Containing Shipbuilding Section

作　　者：郑伟栋[1] 孙玉虎[1] 李瑞生[1] 王利波[1] 李玉盘[1] 杨海滨[1] 刘青[2] 卿家胜[2] 王欣[2] 

机构地区：[1]河北钢铁集团邯郸钢铁公司,河北邯郸056015 [2]北京科技大学,北京100083

出　　处：《连铸》2009年第6期17-19,共3页Continuous Casting

摘　　要：通过对高强度含铌船板钢高温应力应变测试及试样断口形貌分析,得到该钢种第三脆性温度区间为600～1000℃,通过对该钢种二冷配水进行优化,使铸坯矫直前表面温度达到1000℃以上,可有效减少铸坯表面横裂。The high temperature stress-strain tests and fractography analysis of the samples were carried out. The resuits showed that the third brittle temperature zone of the high-strength Nb shipbuilding steel is 600～1000℃. When the slab surface temperature reached above 1 000 ℃ before straightening by optimizing the secondary cooling water, the transverse surface cracking of the slab can be remarkably decreased.

关 键 词：高强度钢 含铌船板钢 横裂 断面收缩率 

分 类 号：TF777.1[冶金工程—钢铁冶金]