应用OM、SEM、XRD技术，分析研究了双相不锈钢2205热轧钢带氧化铁皮显微结构特征，这是决定钢带酸洗效果的本质因素之一。结果表明：热轧后钢带表面氧化铁皮存在大量的裂纹以及局部伴有氧化铁皮部分脱落，有利于酸洗；氧化铁皮厚度一般为10μm左右，但是存在局部区域氧化层增厚以及氧化铁皮向基体内部的嵌入；氧化铁皮中含有难以酸洗的铁橄榄石（Fe2SiO4）和尖晶石结构的Cr2O3·FeO等物相，增加了钢带表面氧化铁皮酸洗去除的难度。
As one of the essential factors,the microstructure of oxide scales on the duplex stainless steel 2205,is crucial for pickling quality of the hot rolled strips. The investigation and analysis process of the microstructure of different oxide scales on the duplex stainless steel 2205 by OM,SEM and XRD was illustrated. The results show that a lot of cracks were presented on the oxide scales of hot rolled strip,accompanied by local oxide scales falling off,which helped enhancing the pickling speed;the thickness of different scales was about 10μm. However,the increasing of scale thickness and the surface roughness between the oxide scales and metallic substrates in local region caused difficult pickling of oxide scales;the complex and multiple phase composition (remained Fe2SiO4 and Cr2O3·FeO ) of oxide scales led to more chal-lenging process of pickling duplex stainless steel 2205.
参考文献
| [1] | 王院生,李海丰,王均,熊计.时效对2205双相不锈钢σ析出相的影响[J].热加工工艺,2011(08):172-174. |
| [2] | 王银军,穆海玲,董汉君,李欣波,张国河,沈鹏杰,杜献智.SPHC热带氧化铁皮酸洗困难原因分析及对策[J].轧钢,2006(04):51-54. |
| [3] | 伍康勉,朱远志,周春泉,成小军,肖爱达,胡大.冷轧板夹杂与氧化铁皮压入的原因与形貌辨析[J].钢铁,2009(02):93-97. |
| [4] | 赵久长 .热轧带钢表面氧化铁皮控制与消除[D].东北大学,2009. |
| [5] | 王银军,董汉君,穆海玲,陈家光.卷取后的热轧带钢氧化铁皮显微分析[J].中国冶金,2007(10):40-44. |
| [6] | 蔡才,宋红梅,骆素珍.双相不锈钢2205表面缺陷剖析[J].上海金属,2011(01):22-25. |
| [7] | 何永全 .热轧碳钢氧化铁皮的结构转变、酸洗行为及腐蚀性能研究[D].东北大学,2011. |
| [8] | CHEN R Y.Improvement of pickling characteristics of hot-rolled strip through heat treatment of the oxide scale[A].Berlin,2002:1057. |
| [9] | 刘旭辉,成小军,曹光明,刘振宇,吴迪.CSP热轧过程中氧化铁皮结构和厚度演变规律研究[J].金属材料与冶金工程,2010(06):7-10. |
| [10] | 魏天斌.热轧氧化铁皮的成因及去除方法[J].钢铁研究,2003(04):54-58. |
| [11] | 刘洋,韩斌,谭文,汪水泽,阮安甫,曹光明.热轧带钢氧化铁皮控制技术的现状与发展趋势[J].轧钢,2012(04):34-37. |
| [12] | 于洋,唐帅,郭晓波,关菊,王国栋,刘玠.热轧卷板氧化铁皮形成机理及控制策略的研究[J].钢铁,2006(11):50-52. |
| [13] | 左军,常军,刘勇,张开华,杨金成,李卫平.热轧钢板红锈氧化铁皮形成机制及改进措施[J].钢铁,2010(10):84-87. |
| [14] | 丁波,丁美良,关建辉,茅永明.连铸坯表面氧化铁皮除不尽原因及对策[J].钢铁,2013(06):50-53. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%