摘要
为提高轧机导辊的耐磨和抗开裂性能,采用等离子熔覆技术,在45钢表面熔覆Al2O3掺杂Fe-Ni基高温耐磨合金涂层,利用扫描电子显微镜、X射线衍射仪研究熔覆层的组织结构,并在实验室研究基础上进行生产现场试验。结果表明:熔覆层组织细密均匀,其主要物相为γ-(Fe,Ni)、(Cr,Fe)7C3和少量FeAl、Fe0.23Ni0.77Al和Ni3Al金属间化合物;等离子合金导辊的使用寿命大大提高,综合性能评价值是普通高铬铸钢导辊的12倍。
In order to improve wear-resistance and crack-resistance of guide roller in rolling mill,plasma cladding technology was employed to obtain Al2O3 doped Fe-Ni based high temperature wear-resistant coating on 45 steel.Microstructure of the alloy coating was studied by scanning electric microscope（SEM） and X-ray diffraction（XRD） instrument.Practice trial was made on the base of lab study.The results show that the microstructure of the coating is fine and uniform.The phases of the coating are γ-（Fe,Ni）,（Cr,Fe）7C3 and a few intermetallic FeAl,Fe0.23Ni0.77Al and Ni3Al.The service life of the plasma alloying roller rises notably and its comprehensive performance evaluation increases by 11 times compared with common high chromium cast steel roller.
出处
《金属热处理》
CAS
CSCD
北大核心
2010年第4期21-23,共3页
Heat Treatment of Metals
关键词
等离子熔覆
导辊
耐磨性能
应用
plasma cladding
guide roller
wear-resistance
application
