The effect of process and material parameters on the coefficient of friction in the flat-die test

Szakaly, Erik D.; Lenard, John

doi:10.1016/j.jmatprotec.2010.01.019

Cited by 21 publications

(8 citation statements)

References 11 publications

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“…Friction coefficient is dependent upon several parameters among which the most important are material roughness, relative velocity, thickness of the oil film and normal pressure (Szakaly and Lenard, 2010). The influence of these parameters on friction behaviour is not easily identifiable and measurable with specific tests.…”

Section: Identification Of the Friction Coefficientmentioning

confidence: 99%

A conical mandrel tube drawing test designed to assess failure criteria

Linardon

Favier

Chagnon

et al. 2014

Journal of Materials Processing Technology

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Identification Of the Friction Coefficientmentioning

confidence: 99%

A conical mandrel tube drawing test designed to assess failure criteria

Linardon

Favier

Chagnon

et al. 2014

Journal of Materials Processing Technology

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“…So CoF decreases and then tends to be stable. Simultaneously, when the normal load reaches a certain value, the pressure helps to restrain surfaces from roughening and improve the lubrication condition between Ti-6Al-4V alloy and die steel, thus leading to a minor CoF [11,12]. Changes of most area with approximate CoF in each ODF has the same trend in Figure 2 Figure 2 is changed to the low CoF region②③.…”

Section: Effect Of Normal Load On Friction Behaviourmentioning

confidence: 82%

“…The analysis shows that CoF increases when the normal load is lower than the critical load value. The reason is that increasing pressure enhances the mechanical interlocking effect between Ti-6Al-4V alloy and die steel [11]. When the normal load is large enough, the friction type between the friction pair is changed with the increase of normal stress.…”

Section: Effect Of Normal Load On Friction Behaviourmentioning

confidence: 99%

Experiment Study on Friction Behaviour of Ti-6Al-4V Alloy for Hot-working

Li¹,

Guo²,

Zhang³

et al. 2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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Abstract. The friction behaviour between blank and die plays an important role in the precision forging process. Hence, the friction behaviour between Ti-6Al-4V alloy and K15 is studied to analyse the friction mechanism and characterization. The significant differences and influence law of temperature, sliding velocity and normal load on coefficient of friction (CoF) were studied through orthogonal tests. The range analysis and analysis of variance show that CoF is affected by normal load most, followed by sliding velocity and temperature. The worn-out appearances and composition analysis show that friction mechanism converts from dry friction to viscous or shear friction under a certain condition.

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“…The reliable results were obtained, which could be used in the forming processes of the thin sheets with the similar sliding schematics. In investigation, reported in [2], another device was used, which was of more massive build. The realized contact pressure was from 1 to 15 MPa.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Flat Die Deep Drawing Process by Variable Contact Pressure Sliding Model

Djordjević¹,

Aleksandrović

Djačić

et al. 2019

Teh. vjesn.

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Influence of the contact pressure in the deep drawing processes is a very actual research topic in the metal forming technology. Within this research the tribological model of the strip sliding in the flat die was developed. The original experimental computerized apparatus for testing of the strip sliding in the variable contact pressure conditions was developed, as well. The complex, multi-factor experiment was performed by application of the Al thin sheet, with the contact elements of various roughnesses, with different lubricants application and with the variable contact pressure. Besides the description of the developed apparatus, the theoretical way for determination of the pressure dependences was also presented. Based on the theoretical changes of pressure, set in advance, the real influence of the contact pressure was obtained, for each of the given conditions. That makes possible to determine the influence of the tribological factors on the actual pressure. The obtained real contact pressure has verified the reliability of the experimental apparatus, namely the degree of the theoretical pressure dependences deviation from the real ones.

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The effect of process and material parameters on the coefficient of friction in the flat-die test

Cited by 21 publications

References 11 publications

A conical mandrel tube drawing test designed to assess failure criteria

A conical mandrel tube drawing test designed to assess failure criteria

Experiment Study on Friction Behaviour of Ti-6Al-4V Alloy for Hot-working

Simulation of Flat Die Deep Drawing Process by Variable Contact Pressure Sliding Model

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