钢中Al含量对16Mn系列板坯表面裂纹的影响  

Influence of Al content on 16Mn series slab surface crack

作　　者：陈宏豫[1] 岳尔斌[1] 

机构地区：[1]连铸技术国家工程研究中心

出　　处：《连铸》2002年第6期31-32,43,共3页Continuous Casting

摘　　要：通过研究Al含量对16Mn系列板坯的高温脆性,用热力学方法计算以及用扫描电镜观察裂纹及附近析出物,测量在二冷段铸坯表面温度的变化。降低钢中Al和N含量,可降低AlN的析出温度和析出量,达到减轻铸坯产生裂纹的目的。This paper analyses the effect of Al content on 16Mn series slab hot shortness. The crack and the precipitation near crack are calculated with the thermodynamics and observed with SEN. The temperatune behaviour on slab surface in secondary cooling section is also measured. To decrease slab crack tendency, it is necessary lo reduce the Al and N contents and then lo decrease the precipitating temperature and the amount of A1N.

关 键 词：表面裂纹 炼钢 铝 板坯连铸 

分 类 号：TF777[冶金工程—钢铁冶金]