Partial Film Lubrication Characteristics of Inlet Zone in Cold Strip RollingSource: Journal of Tribology:;2014:;volume( 136 ):;issue: 004::page 41502DOI: 10.1115/1.4027858Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: According to the average flow Reynolds equation and rolling theory, a partial film lubrication model of inlet zone has been developed. The model mainly simulates and reflects the influence of surface topography on the inlet film thickness and inlet zone length. Based on the surface topography analysis, a method to judge the friction condition was proposed. All the calculation was conducted by a numerical method. The result shows that the transverse stripe increases the inlet film thickness and the inlet zone length, while the longitudinal stripe decreases them. The surface roughness will enhance this effect. The surface roughness and the stripe direction also have a significant influence on the contact area ratio and the distribution of stress and film thickness in work zone. Transverse stripe increases the lubricant film thickness and separates the roll and the sheet with a larger distance in work zone. It also decreases the contact area ratio, the pressure stress and friction stress of the work zone. Whereas longitudinal stripe decreases the film thickness and increases the contact area ratio, pressure stress and friction stress. The surface roughness increases the contact area ratio, pressure stress and friction stress.
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contributor author | Fu, Kuo | |
contributor author | Zang, Yong | |
contributor author | Gao, Zhiying | |
date accessioned | 2017-05-09T01:13:01Z | |
date available | 2017-05-09T01:13:01Z | |
date issued | 2014 | |
identifier issn | 0742-4787 | |
identifier other | trib_136_04_041502.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/156457 | |
description abstract | According to the average flow Reynolds equation and rolling theory, a partial film lubrication model of inlet zone has been developed. The model mainly simulates and reflects the influence of surface topography on the inlet film thickness and inlet zone length. Based on the surface topography analysis, a method to judge the friction condition was proposed. All the calculation was conducted by a numerical method. The result shows that the transverse stripe increases the inlet film thickness and the inlet zone length, while the longitudinal stripe decreases them. The surface roughness will enhance this effect. The surface roughness and the stripe direction also have a significant influence on the contact area ratio and the distribution of stress and film thickness in work zone. Transverse stripe increases the lubricant film thickness and separates the roll and the sheet with a larger distance in work zone. It also decreases the contact area ratio, the pressure stress and friction stress of the work zone. Whereas longitudinal stripe decreases the film thickness and increases the contact area ratio, pressure stress and friction stress. The surface roughness increases the contact area ratio, pressure stress and friction stress. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Partial Film Lubrication Characteristics of Inlet Zone in Cold Strip Rolling | |
type | Journal Paper | |
journal volume | 136 | |
journal issue | 4 | |
journal title | Journal of Tribology | |
identifier doi | 10.1115/1.4027858 | |
journal fristpage | 41502 | |
journal lastpage | 41502 | |
identifier eissn | 1528-8897 | |
tree | Journal of Tribology:;2014:;volume( 136 ):;issue: 004 | |
contenttype | Fulltext |