An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process

Existence of thin lubricating film in inlet zone at the die and billet interface in hydrostatic extrusion process prevents metal-to-metal contacts in contact zone, which leads to reduction in interfacial solid friction. This enhances both the tooling life and surface quality of the products in addit...

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Autores principales:	Pankaj Tomar, Raj Kumar Pandey, Yogendra Nath
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2013
Materias:	hydrostatic extrusion process thermal effect minimum film thickness numerical analysis lobatto quadrature empirical relation 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/be0cebe930f94401af19ccbffdbfa729
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spelling	oai:doaj.org-article:be0cebe930f94401af19ccbffdbfa7292021-11-05T09:24:23ZAn Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process1881-219810.2474/trol.8.171https://doaj.org/article/be0cebe930f94401af19ccbffdbfa7292013-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/8/2/8_171/_pdf/-char/enhttps://doaj.org/toc/1881-2198Existence of thin lubricating film in inlet zone at the die and billet interface in hydrostatic extrusion process prevents metal-to-metal contacts in contact zone, which leads to reduction in interfacial solid friction. This enhances both the tooling life and surface quality of the products in addition to efficient extrusion operation. Hence, accurate prediction of the minimum film thickness of the lubricating oil in the inlet zone at the die and billet interface and its maintenance during the extrusion process in terms of operating parameters are vital issues from the operation and design point of views. Therefore, the objective of this work is to accurately analyze the inlet zone of extrusion operation for minimum film thickness considering the viscous heat dissipation in the lubricating film for proposing a handy empirical relation for minimum film thickness in terms of operating parameters for use in design and operation of extrusion process. Coupled solution of Reynolds equation, energy equation, and rheological relations are obtained for the minimum film thickness computations as functions of extrusion speed, material parameter, extrusion pressure, and die semi-angle.Pankaj TomarRaj Kumar PandeyYogendra NathJapanese Society of Tribologistsarticlehydrostatic extrusion processthermal effectminimum film thicknessnumerical analysislobatto quadratureempirical relationPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 8, Iss 2, Pp 171-178 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrostatic extrusion process thermal effect minimum film thickness numerical analysis lobatto quadrature empirical relation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	hydrostatic extrusion process thermal effect minimum film thickness numerical analysis lobatto quadrature empirical relation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Pankaj Tomar Raj Kumar Pandey Yogendra Nath An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
description	Existence of thin lubricating film in inlet zone at the die and billet interface in hydrostatic extrusion process prevents metal-to-metal contacts in contact zone, which leads to reduction in interfacial solid friction. This enhances both the tooling life and surface quality of the products in addition to efficient extrusion operation. Hence, accurate prediction of the minimum film thickness of the lubricating oil in the inlet zone at the die and billet interface and its maintenance during the extrusion process in terms of operating parameters are vital issues from the operation and design point of views. Therefore, the objective of this work is to accurately analyze the inlet zone of extrusion operation for minimum film thickness considering the viscous heat dissipation in the lubricating film for proposing a handy empirical relation for minimum film thickness in terms of operating parameters for use in design and operation of extrusion process. Coupled solution of Reynolds equation, energy equation, and rheological relations are obtained for the minimum film thickness computations as functions of extrusion speed, material parameter, extrusion pressure, and die semi-angle.
format	article
author	Pankaj Tomar Raj Kumar Pandey Yogendra Nath
author_facet	Pankaj Tomar Raj Kumar Pandey Yogendra Nath
author_sort	Pankaj Tomar
title	An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
title_short	An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
title_full	An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
title_fullStr	An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
title_full_unstemmed	An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process
title_sort	accurate analysis for computation of thermal minimum film thickness in inlet zone in hydrostatic extrusion process
publisher	Japanese Society of Tribologists
publishDate	2013
url	https://doaj.org/article/be0cebe930f94401af19ccbffdbfa729
work_keys_str_mv	AT pankajtomar anaccurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess AT rajkumarpandey anaccurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess AT yogendranath anaccurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess AT pankajtomar accurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess AT rajkumarpandey accurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess AT yogendranath accurateanalysisforcomputationofthermalminimumfilmthicknessininletzoneinhydrostaticextrusionprocess
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An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process

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