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    Hydrodynamic Lubrication in Rolling of Thin Strips

    Source: Journal of Manufacturing Science and Engineering:;1972:;volume( 094 ):;issue: 001::page 317
    Author:
    B. Avitzur
    ,
    G. Grossman
    DOI: 10.1115/1.3428139
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The process of thin strip rolling is analyzed considering the hydrodynamic lubrication effect. Hydrodynamic lubrication prevails when a film of lubricant fully separates the rolls from the strip. The conditions which produce hydrodynamic effects are the subject of this study. A dimensionless parameter, the Sommerfeld Number, is defined as a function of lubricant viscosity, roll velocity, strip thickness, and yield strength of the material. The critical Sommerfeld Number for occurrence of hydrodynamic lubrication is determined. Increasing lubricant viscosity and roll velocity or decreasing flow stress and strip thickness produce a larger Sommerfeld Number with an increased tendency for hydrodynamic effects. The thickness of the lubricant film and the velocity of the emerging strip are both determined as functions of the Sommerfeld Number, reduction in strip thickness, and of roll diameter. Graphical and numerical examples are presented.
    keyword(s): Lubrication , Strips , Thickness , Lubricants , Viscosity , Stress , Functions , Yield strength AND Flow (Dynamics) ,
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      Hydrodynamic Lubrication in Rolling of Thin Strips

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    http://yetl.yabesh.ir/yetl1/handle/yetl/163227
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    contributor authorB. Avitzur
    contributor authorG. Grossman
    date accessioned2017-05-09T01:35:22Z
    date available2017-05-09T01:35:22Z
    date copyrightFebruary, 1972
    date issued1972
    identifier issn1087-1357
    identifier otherJMSEFK-27570#317_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/163227
    description abstractThe process of thin strip rolling is analyzed considering the hydrodynamic lubrication effect. Hydrodynamic lubrication prevails when a film of lubricant fully separates the rolls from the strip. The conditions which produce hydrodynamic effects are the subject of this study. A dimensionless parameter, the Sommerfeld Number, is defined as a function of lubricant viscosity, roll velocity, strip thickness, and yield strength of the material. The critical Sommerfeld Number for occurrence of hydrodynamic lubrication is determined. Increasing lubricant viscosity and roll velocity or decreasing flow stress and strip thickness produce a larger Sommerfeld Number with an increased tendency for hydrodynamic effects. The thickness of the lubricant film and the velocity of the emerging strip are both determined as functions of the Sommerfeld Number, reduction in strip thickness, and of roll diameter. Graphical and numerical examples are presented.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleHydrodynamic Lubrication in Rolling of Thin Strips
    typeJournal Paper
    journal volume94
    journal issue1
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.3428139
    journal fristpage317
    journal lastpage328
    identifier eissn1528-8935
    keywordsLubrication
    keywordsStrips
    keywordsThickness
    keywordsLubricants
    keywordsViscosity
    keywordsStress
    keywordsFunctions
    keywordsYield strength AND Flow (Dynamics)
    treeJournal of Manufacturing Science and Engineering:;1972:;volume( 094 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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