Development of Tribological Analysis Model for Cold Rolling Process
| Autor: | Jian-Ting Lee, 李建廷 |
|---|---|
| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 In metalworking, rolling is a metal forming process in which metal stock is passed through a pair of rolls. Cold rolling occurs with the metal below its recrystallization temperature, which increases the strength via strain hardening. It also improves the surface finish and holds tighter tolerances. Commonly cold-rolled products include sheets, strips, bars, and rods. During the cold rolling process, the operation parameters and consumables’ characteristics can significantly affect the quality of cold-rolled products. Therefore, the understanding of the relationship between the operation parameters and the phenomena between the rolling interface is the key to improve the cold rolling processes. The current study aims to establish a tribology analytical model for cold rolling process to predict the behavior of rolling interface. The current study develops a tribological model accounting for the operating parameters, consumables’ characteristics and strip surface roughness to describe the interfacial phenomena among the strip, lubricant and the roller. The developed model can be adopted to explore the oil film pressure distribution, real contact area, friction, relative velocity distribution and the rolling force of the rolling interface. The findings of this study provide a theoretical foundation for the selection of operation parameters and consumables during cold rolling process that cannot be achieved with empirical findings and phenomenological approaches. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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