Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds

For successful cold rolling operation at elevated operating conditions, the existence of desirable minimum film thickness at the roll-strip interface and awareness of its controlling by adjusting the process variables such as roll speed, reduction ratio, lubricant types, and roll cooling system etc....

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Autores principales:	Prahlad Singh, Raj Kumar Pandey, Yogendra Nath
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2009
Materias:	cold rolling levels of starvation thermal loading parameter minimum film thickness inlet zone thermohydrodynamic analysis reduction ratio material parameter Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/bf5c250c6a6549c299322e84380a23aa
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spelling	oai:doaj.org-article:bf5c250c6a6549c299322e84380a23aa2021-11-05T09:28:15ZFilm Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds1881-219810.2474/trol.4.36https://doaj.org/article/bf5c250c6a6549c299322e84380a23aa2009-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/4/1/4_1_36/_pdf/-char/enhttps://doaj.org/toc/1881-2198For successful cold rolling operation at elevated operating conditions, the existence of desirable minimum film thickness at the roll-strip interface and awareness of its controlling by adjusting the process variables such as roll speed, reduction ratio, lubricant types, and roll cooling system etc. are essential. Moreover, the studies of the lubricant's starvation in the inlet zone and its influence on the film thickness at high roll speeds considering viscous shear heating effects are very important issues. Thus, the objectives of this paper are to analyze the inlet zone of cold rolling interface thermohydrodynamically and develop formulas for the prediction of minimum film thickness (for both isothermal and thermal cases) as functions of operating parameters including levels of starvation. Based on the investigations reported herein, it is observed that the existence of starvation up to certain level seems to be beneficial. It causes reduction in the temperature rise in the inlet zone and reduces the quantity of lubricating oil (leading to oil conservation) required during the cold rolling operation provided a thin continuous film exists at the strip-roll interface. Authors believe that the cold rolling industries may be benefited by the formulas reported in this paper.Prahlad SinghRaj Kumar PandeyYogendra NathJapanese Society of Tribologistsarticlecold rollinglevels of starvationthermal loading parameterminimum film thicknessinlet zonethermohydrodynamic analysisreduction ratiomaterial parameterPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 4, Iss 1, Pp 36-41 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold rolling levels of starvation thermal loading parameter minimum film thickness inlet zone thermohydrodynamic analysis reduction ratio material parameter Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	cold rolling levels of starvation thermal loading parameter minimum film thickness inlet zone thermohydrodynamic analysis reduction ratio material parameter Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Prahlad Singh Raj Kumar Pandey Yogendra Nath Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
description	For successful cold rolling operation at elevated operating conditions, the existence of desirable minimum film thickness at the roll-strip interface and awareness of its controlling by adjusting the process variables such as roll speed, reduction ratio, lubricant types, and roll cooling system etc. are essential. Moreover, the studies of the lubricant's starvation in the inlet zone and its influence on the film thickness at high roll speeds considering viscous shear heating effects are very important issues. Thus, the objectives of this paper are to analyze the inlet zone of cold rolling interface thermohydrodynamically and develop formulas for the prediction of minimum film thickness (for both isothermal and thermal cases) as functions of operating parameters including levels of starvation. Based on the investigations reported herein, it is observed that the existence of starvation up to certain level seems to be beneficial. It causes reduction in the temperature rise in the inlet zone and reduces the quantity of lubricating oil (leading to oil conservation) required during the cold rolling operation provided a thin continuous film exists at the strip-roll interface. Authors believe that the cold rolling industries may be benefited by the formulas reported in this paper.
format	article
author	Prahlad Singh Raj Kumar Pandey Yogendra Nath
author_facet	Prahlad Singh Raj Kumar Pandey Yogendra Nath
author_sort	Prahlad Singh
title	Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
title_short	Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
title_full	Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
title_fullStr	Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
title_full_unstemmed	Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds
title_sort	film formation analysis with starvation in the inlet zone of cold rolling interface at high roll speeds
publisher	Japanese Society of Tribologists
publishDate	2009
url	https://doaj.org/article/bf5c250c6a6549c299322e84380a23aa
work_keys_str_mv	AT prahladsingh filmformationanalysiswithstarvationintheinletzoneofcoldrollinginterfaceathighrollspeeds AT rajkumarpandey filmformationanalysiswithstarvationintheinletzoneofcoldrollinginterfaceathighrollspeeds AT yogendranath filmformationanalysiswithstarvationintheinletzoneofcoldrollinginterfaceathighrollspeeds
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Film Formation Analysis with Starvation in the Inlet Zone of Cold Rolling Interface at High Roll Speeds

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