摘要
为研究冷连轧过程中接触界面润滑油膜厚度对表面形貌转印过程的影响,在跟踪实际生产中带钢表面形貌的基础上,结合轧辊表面磨损形貌以及润滑分析确定的界面油膜分布,建立真实表面接触的带钢形貌生成模型,用跟踪测量轧辊服役期内生产带钢表面的粗糙度对模型进行验证.利用模型分析在不同磨损状态下电火花毛化轧辊油膜厚度对转印形成带钢表面形貌的影响规律.结果表明:轧辊表面处于不同磨损状态时,带钢表面Ra的转印率随着油膜厚度的增加而减小;轧辊表面磨损后转印形成的带钢表面P_c的转印率在油膜厚度增加的初期基本保持不变,而后急剧减小.
Based on the measurement of the surface topography of rolled steel strip,the phenomenon and rules of surface topography transfer were analyzed. Combining with the worn surface topography of roll and the distribution of lubrication oil,the transfer model of surface topography in cold rolling was established,and by which the simulation results were verified by measured data. A set of roughness parameters were introduced to analyze the effect of lubrication film thickness on the transfer performance of electrical discharge textured roll surface topography.Numerical examples show that the roughness parameters Ra of transfer ratio decreases with the increase of oil film thickness,when the surface topography of roll under different worn condition. Furthermore,with the surface topography wear of roll,P_c of transfer ratio remains when the oil film thickness is thin,but rapidly decreases with the increase of oil film thickness when the oil film thickness is thick.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2017年第1期160-165,共6页
Journal of Harbin Institute of Technology
基金
国家科技支撑(2015BAF30B01)
国家自然科学基金(51604024
51404023)
中央高校基本科研业务费专项(FRF-TP-15-001A1)
关键词
冷轧
带钢
表面形貌
转印
润滑
cold rolling
steel strip
surface topography
transfer
lubrication
