Screening the performance of lubricants for the ironing of stainless steel with a strip reduction test

Andreasen, Jan Lasson; Bay, Niels; Andersen, Mette Merete; Christensen, Erik R.; Bjerrum, Niels

doi:10.1016/s0043-1648(96)07462-5

Cited by 37 publications

(23 citation statements)

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“…In this connection a system of test methods representing the varied conditions in sheet metal forming have been developed including simulative tests: Bending-Under-Tension (BUT) [3], Draw-Bead-Test (DBT) [160], Strip-Reduction-Test (SRT) [1,2] as well as process tests: Deep-Drawing-Test (DDT) [2,161] and PUnching-Test (PUT), [158,159]. In order to emulate real production conditions, preheating of the tool temperature to typical production level is possible in all the simulative tests.…”

Section: Alternatives To Dry Film Lubricationmentioning

confidence: 99%

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Environmentally benign tribo-systems for metal forming

et al. 2010

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The growing awareness of environmental issues and the requirements to establish solutions diminishing the impact on working environment as well as external environment has initiated ever increasing efforts to develop new, environmentally benign tribological systems for metal forming. The present paper gives an overview of these efforts substituting environmentally hazardous lubricants in cold, warm and hot forging as well as sheet forming and punching/blanking by new, less harmful lubricants and furthermore describes other more generic measures directed towards the same goal such as development of anti-seizure tool materials and coatings and application of structured workpiece and tool surfaces.

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Section: Alternatives To Dry Film Lubricationmentioning

confidence: 99%

“…In the strip reduction test galling is quantified by surface roughness measurements across the strip after testing, [1,2]. With increasing sliding length the tool becomes heated due to workpiece deformation and friction implying eventual breakdown of the lubricant film.…”

Section: Alternatives To Dry Film Lubricationmentioning

confidence: 99%

Environmentally benign tribo-systems for metal forming

et al. 2010

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“…The strip reduction test is a close equivalent to the ironing process known from cold metal forming [5]. The test was chosen based upon its challenging tribological conditions and the open configuration, making it easy to assess the results.…”

Section: The Strip Reduction Testmentioning

confidence: 99%

Manufacture of functional surfaces through combined application of tool manufacturing processes and Robot Assisted Polishing

Eriksen

Arentoft

Grønbæk³

et al. 2012

CIRP Annals

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The tool surface topography is often a key parameter in the tribological performance of modern metal forming tools. A new generation of multifunctional surfaces is achieved by combination of conventional tool manufacturing processes with a novel robot assisted polishing process. This novel surface texturing method allows for a large degree of freedom in specifying surface characteristics and facilitates a high degree of reproducibility between samples surfaces. A series of strip reduction tests, equivalent to a metal forming ironing process, are conducted to benchmark the tribological performance of 15 generated tool surfaces.

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“…Desde el punto de vista de la lubricación, existen diversos trabajos tanto teóricos como experimentales que estudian las diferentes condiciones en las que se produce este fenómeno [1][2][3][4][5] . Otros autores [4] , relacionan el comienzo del galling con el calentamiento producido cuando se produce la rotura de la película lubricante, y con el acabado superficial de las matrices, comprobando que el galling es muy frecuente cuando se utilizan herramientas muy pulidas.…”

Section: I In Nt Tr Ro Od Du Uc Cc Ci Ió óN Nunclassified

Flat friction tests applied to austenic stainless steels with several surface finish. Analysis of adhesion conditions in friction

Coello¹,

Miguel²,

Ferrer³

et al. 2008

Rev. metal.

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E En n s s a ay yo o s s d d e e r ro o z za am m i i e en n t t o o p p l l a an n o o s s o o b b r r e e a ac c e er ro o s s i i n n o ox x i i d d a ab b l l e es s a au us st te en ní ít ti ic co os s c co on n d di if fe er re en nt te e a ac ca ab ba ad do o s su up pe er rf fi ic ci ia al l. . D De et te er rm mi in na ac ci ió ón n d de e l la as s c co on nd di ic ci io on ne es s d de e a ad dh he es si ió ón n e en n e el l r ro oz za am mi ie en nt to o ( (• •) ) J. Coello * , V. Miguel * , C. Ferrer ** , A. Calatayud * y A. Martínez * R Re es su um me en n El objetivo de este trabajo es determinar el comportamiento tribológico de los aceros inoxidables austeníticos 304 con acabado brillante BA (ASTM A 240), 304 DDQ y 316 con acabado mate 2B, en sistemas de contacto plano, con el fin de simular el rozamiento en la zona del flanco en los procesos de embutición de acero inoxidable. Para ello, se ha estudiado la influencia del acabado superficial del acero, la velocidad de deslizamiento y la presión normal sobre el coeficiente de rozamiento, utilizando un ensayo de fricción con matrices planas. Los ensayos se han realizado con aceite mineral de 200 cst, grasa de bisulfuro de molibdeno y en seco. En presencia de aceite, se ha establecido una correlación de m con la velocidad de deslizamiento y la presión de contacto con comportamiento fuertemente adhesivo en las condiciones de lubricación límite consideradas. Los resultados obtenidos muestran que la grasa de bisulfuro de molibdeno disminuye en un 50 % los valores del coeficiente de rozamiento. Se ha constatado una menor tendencia al gripado para la calidad 316 caracterizada por una mayor dureza superficial. El rozamiento experimentado bajo las condiciones más severas va acompañado de un relevante efecto plowing con un endurecimiento superficial importante del acero. P Pa al la ab br ra as s c cl la av ve e Rozamiento plano; Aceros inoxidables austeníticos; Lubricación límite.F Fl la at t f fr ri ic ct ti io on n t te es st ts s a ap pp pl li ie ed d t to o a au us st te en ni ic c s st ta ai in nl le es ss s s st te ee el ls s w wi it th h s se ev ve er ra al l s su ur rf fa ac ce e f fi in ni is sh h. . A An na al ly ys si is s o of f a ad dh he es si io on n c co on nd di it ti io on ns s i in n f fr ri ic ct ti io on n A Ab bs st tr ra ac ct tThe main purpose of this work is to evaluate the tribological behaviour of austenic stainless steels AISI 304 with bright annealed surface finishing (BA) (ASTM a 240); AISI 304 DDQ and AISI 316 with bright surface finishing (B). The assays have been carried out in flat faced dies system with mineral oil of 200 cts viscosity, S 2 Mo grease and in dry conditions.. The relationship between friction coefficient and pressure and velocity has been established for the mineral oil as lubricant. In these conditions, a strong adhesive tendency has been found in boundary lubrication regime. The results obtained here, show us that S 2 Mo grease leads to lowest values for the friction coefficient. A minor adhesive behaviour...

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Screening the performance of lubricants for the ironing of stainless steel with a strip reduction test

Cited by 37 publications

References 0 publications

Environmentally benign tribo-systems for metal forming

Environmentally benign tribo-systems for metal forming

Manufacture of functional surfaces through combined application of tool manufacturing processes and Robot Assisted Polishing

Flat friction tests applied to austenic stainless steels with several surface finish. Analysis of adhesion conditions in friction

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