Entrapment and escape of liquid lubricant in metal forming

Jakob Ilsted Bech; Niels Bay; Morten Eriksen

doi:10.1016/S0043-1648(99)00136-2

Entrapment and escape of liquid lubricant in metal forming

Jakob Ilsted Bech, Niels Bay, Morten Eriksen

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

Using a transparent tool entrapment, compression and eventual escape of liquid lubricant in surface pockets is observed in plane strip drawing. The two mechanisms of lubricant escape. Micro Plasto HydroDynamic and Hydrostatic Lubrication (MPHDL and MPHSL), are observed and quantified experimentally with Varying viscosity, speed, reduction, workpiece material, back tension and friction. The mechanisms are influenced by all these parameters in an explicable way. Theoretical models of the escape mechanisms are established combining continuum mechanic analyses of the die pressure distribution with a fluid mechanic analysis of the lubricant escape. Oscillations in the drawing force are caused by the local escape of lubricant. (C) 1999 Elsevier Science S.A. All rights reserved.

Original language	English
Journal	Wear
Volume	232
Issue number	2
Pages (from-to)	134-139
ISSN	0043-1648
DOIs	https://doi.org/10.1016/S0043-1648(99)00136-2
Publication status	Published - Oct 1999
Event	8th NORDTRIB Biennial Conference on Fundamental Aspects, Wear, Lubrication, Industrial Tribology and Suface Engineering - Ebeltoft, Denmark Duration: 7 Jun 1998 → 10 Jun 1998 Conference number: 8

Conference

Conference	8th NORDTRIB Biennial Conference on Fundamental Aspects, Wear, Lubrication, Industrial Tribology and Suface Engineering
Number	8
Country/Territory	Denmark
City	Ebeltoft
Period	07/06/1998 → 10/06/1998

Keywords

liquid lubrication mechanisms
surface pockets
friction
metal forming

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title = "Entrapment and escape of liquid lubricant in metal forming",

abstract = "Using a transparent tool entrapment, compression and eventual escape of liquid lubricant in surface pockets is observed in plane strip drawing. The two mechanisms of lubricant escape. Micro Plasto HydroDynamic and Hydrostatic Lubrication (MPHDL and MPHSL), are observed and quantified experimentally with Varying viscosity, speed, reduction, workpiece material, back tension and friction. The mechanisms are influenced by all these parameters in an explicable way. Theoretical models of the escape mechanisms are established combining continuum mechanic analyses of the die pressure distribution with a fluid mechanic analysis of the lubricant escape. Oscillations in the drawing force are caused by the local escape of lubricant. (C) 1999 Elsevier Science S.A. All rights reserved. ",

keywords = "liquid lubrication mechanisms, surface pockets, friction, metal forming",

author = "Bech, {Jakob Ilsted} and Niels Bay and Morten Eriksen",

year = "1999",

month = oct,

doi = "10.1016/S0043-1648(99)00136-2",

language = "English",

volume = "232",

pages = "134--139",

journal = "Wear",

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T1 - Entrapment and escape of liquid lubricant in metal forming

AU - Bech, Jakob Ilsted

AU - Bay, Niels

AU - Eriksen, Morten

N1 - Conference code: 8

PY - 1999/10

Y1 - 1999/10

N2 - Using a transparent tool entrapment, compression and eventual escape of liquid lubricant in surface pockets is observed in plane strip drawing. The two mechanisms of lubricant escape. Micro Plasto HydroDynamic and Hydrostatic Lubrication (MPHDL and MPHSL), are observed and quantified experimentally with Varying viscosity, speed, reduction, workpiece material, back tension and friction. The mechanisms are influenced by all these parameters in an explicable way. Theoretical models of the escape mechanisms are established combining continuum mechanic analyses of the die pressure distribution with a fluid mechanic analysis of the lubricant escape. Oscillations in the drawing force are caused by the local escape of lubricant. (C) 1999 Elsevier Science S.A. All rights reserved.

AB - Using a transparent tool entrapment, compression and eventual escape of liquid lubricant in surface pockets is observed in plane strip drawing. The two mechanisms of lubricant escape. Micro Plasto HydroDynamic and Hydrostatic Lubrication (MPHDL and MPHSL), are observed and quantified experimentally with Varying viscosity, speed, reduction, workpiece material, back tension and friction. The mechanisms are influenced by all these parameters in an explicable way. Theoretical models of the escape mechanisms are established combining continuum mechanic analyses of the die pressure distribution with a fluid mechanic analysis of the lubricant escape. Oscillations in the drawing force are caused by the local escape of lubricant. (C) 1999 Elsevier Science S.A. All rights reserved.

KW - liquid lubrication mechanisms

KW - surface pockets

KW - friction

KW - metal forming

U2 - 10.1016/S0043-1648(99)00136-2

DO - 10.1016/S0043-1648(99)00136-2

M3 - Conference article

SN - 0043-1648

VL - 232

SP - 134

EP - 139

JO - Wear

JF - Wear

IS - 2

T2 - 8th NORDTRIB Biennial Conference on Fundamental Aspects, Wear, Lubrication, Industrial Tribology and Suface Engineering

Y2 - 7 June 1998 through 10 June 1998

ER -

Entrapment and escape of liquid lubricant in metal forming

Abstract

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Keywords

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