大功率风电机组用轴承钢中非金属夹杂物特征及来源分析  

Characteristics and origins of non-metallic inclusions in bearing steel used for high-power wind turbines

作　　者：李阳[1] 蔡金林[1] 薛正良[1] 肖爱平 徐尚呈 刘月云 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]大冶特殊钢股份有限公司研究院,湖北黄石435001

出　　处：《武汉科技大学学报》2016年第1期30-35,共6页Journal of Wuhan University of Science and Technology

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA03A504)

摘　　要：采用非水溶液电解法萃取大功率风电机组用轴承钢轧材中的非金属夹杂物,结合SEM和EDS分析,对夹杂物的形貌、尺寸、成分及类型进行表征,并分析其可能来源。结果表明,该风电轴承钢轧材中非金属夹杂物主要包括Al-Ca-Si-Mg系氧化物和Al-Ca-Si-Mg系硫化物两大类;在钢中T[O]含量仅为0.0007%时,仍存在以SiO2为主的Al-Ca-Si-Mg系大型夹杂物。Nonaqueous solution electrolysis method was employed to extract the non-metallic inclusions in the rolled products of bearing steel used for high-power wind turbines. By means of SEM and EDS, the mophology, size, composition and type of the extracted inclusions were characterized and the pos- sible sources of those inclusions were analyzed accordingly. The results show that non-metallic inclu- sions in this bearing steel are mainly composed of Al-Ca-Si-Mg system oxides and Al-Ca-Si-Mg system sulfides. Even though the T[O] content in the rolled metal is only 0. 0007%, there still exists a cer- tain amount of SiO2-rich Al-Ca-Si-Mg system macro inclusions.

关 键 词：风电机组 轴承钢 非水溶液电解 非金属夹杂物 Al-Ca-Si-Mg系 大型夹杂物 

分 类 号：TF7[冶金工程—钢铁冶金]