On Wear Morphology and Mechanism of Backup Roll
The backup roll(BUR)is an important part in continuous rolling.The main failure form is wear of its surface.In this paper,to clarify the wear mechanism and find out the effective countermeasures to reduce the wear loss of BUR,taking samples from the normally off-line backup rolls in 2050 hot strip mill and 1550 cold strip mill of Baosteel,the surface wear morphology is investigated by means of the stereomicroscope,confocal laser scanning microscope,and scanning electron microscope,et al.The results show that the wear mechanism of backup roll is a combination of abrasive and corrosive wear.The hot rolling BUR is mainly of abrasive wear and corrosive wear,while the cold rolling BUR is mainly of abrasive wear.The main countermeasures to decrease the backup roll wear include:(1)strengthened the matrix strength(hot/cold rolling BUR);(2)fine matrix microstructure(hot/cold rolling BUR);(3)minimization of micro segregation(hot rolling BUR);(4)solution of undissolved carbides(hot rolling BUR).
backup roll wear morphology wear mechanism countermeasure
Wen Hongquan Wu Qiong Yao Lisong Sun Dale
Research Institute of Baosteel,Shanghai 201900,China
国内会议
上海
英文
1-4
2015-10-21（万方平台首次上网日期，不代表论文的发表时间）