摘要
详细分析了热轧奥氏体不锈钢带钢的表面氧化皮形成机理、退火对氧化皮特性的影响机理、酸洗工艺机理。结论是:热轧奥氏体不锈钢带钢表面氧化皮外层主要以铁氧化物为主,内层主要以交替分布的Cr2O3和Fe Cr2O4层为主;退火后,氧化皮结构变得疏松多孔,且易脱落,贫铬层厚度增加,带钢更加容易酸洗;酸洗时,带钢表面的氧化皮主要通过机械剥离作用去除。分析结果对热轧奥氏体不锈钢带钢酸洗技术的改进具有一定的理论指导意义。
The formation mechanism of surface oxide scale, the mechanism of the effect of annealing on surface oxide scale, and the pickling process mechanism of hot-rolled austenitic stainless steel strip were analyzed in details, respectively. The results shows that the outer layer of oxide scale is mainly composed of iron oxide and the inner layer is alternatively distributed Cr2O3 and Fe Cr2O4. After annealing, the oxide scale becomes loose and porous and is easy to fall off. Meanwhile, the chromium depleted layer becomes thicker. All these make the pickling of strip much more easily. In addition,the surface oxide scale is primarily removed by mechanical stripping during pickling. The analysis of the results has certain theoretical significance for the improvement of hot-rolled austenitic stainless steel strip pickling technology.
出处
《钢铁》
CAS
CSCD
北大核心
2014年第10期58-61,共4页
Iron and Steel
关键词
热轧奥氏体不锈钢
氧化皮
退火
酸洗
hot-rolled austenitic stainless steel
oxide scale
annealing
pickling
