The Interaction between the Sheet/Tool Surface Texture and the Friction/Galling Behaviour on Aluminium Deep Drawing Operations

Zabala, Alaitz; Galdos, Lander; Childs, Chris; Llavori, Iñigo; Aginagalde, A.; Mendiguren, Joseba; Argandoña, Eneko Sáenz de

doi:10.3390/met11060979

Cited by 17 publications

(14 citation statements)

References 52 publications

(60 reference statements)

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“…Figure 6(a) shows the variation of friction coefficient during strip drawing experiments with conventional and textured (125 μm diameter and 10% area density) dies at 1 mm/s and 10 kN. When strip drawing experiments are performed at low speeds with the conventional die, the friction increases with the drawing length as wear particles accumulate between the contacting surfaces and move in the sliding direction [22]. The increasing trend is typically not visible in textured dies.…”

Section: Resultsmentioning

confidence: 99%

Laser surface texturing of dies in strip drawing of DP600 steel sheet

Shrivastava,

Kumar,

Manikandan

et al. 2023

Surface Engineering

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Friction at the blank-die contact influences material flow, formability, and product surface quality in processes like deep drawing. Surface modification of the dies by laser texturing is a potential technique to alter the tribological characteristics at the interface during sliding of the sheet over the die surface in lubricated condition. In this work, the effect of laser surface texturing of dies has been investigated under high normal loads during strip drawing of dual phase (DP600) steel. The effect of texture parameters and process parameters on the interface friction between the strip and the dies has been studied. It has been found that the friction coefficient reduced, and the surface finish improved significantly with the textured dies when compared to the conventional die. This study emphasises the importance of surface modification of the dies by laser texturing for its potential application in sheet metal forming processes.

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Section: Resultsmentioning

confidence: 99%

Laser surface texturing of dies in strip drawing of DP600 steel sheet

Shrivastava,

Kumar,

Manikandan

et al. 2023

Surface Engineering

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“…These contact conditions influence the friction, change the surface topography and cause different types of wear. In particular, adhesive wear (so-called galling) is a big issue in deep drawing of aluminum alloy sheets, as it affects the surface quality of both the tool and the formed components [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of elevated surface temperature on the formability in cold forming of aluminum alloy sheets

Hodžić

Sabet

Silvayeh

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In recent decades, deep drawing has been widely used in the automotive industry for producing lightweight car body components of 5xxx and 6xxx aluminum alloys. Although sheets of these alloys are usually deep-drawn at room temperature, heat generated by friction and plastic deformation may locally increase the surface temperature of the drawing tools during the serial production of components. Therefore, this work investigates the influence of elevated surface temperatures of the tool on the formability of commercial hotmelt-lubricated 1.5 mm-thick EN AW-5182 and EN AW-6016-T4 sheets. Deep drawing experiments were performed at different constant surface temperatures between room temperature (RT) and 80 °C using a cross-shaped tool with open die. With increasing surface temperature, the maximum drawing depth – that was considered as indicator for the formability – decreased by about 21 % and 28 % for EN AW-6016-T4 and EN AW-5182, respectively. Tribological experiments performed using a pin-on-plate tribometer confirmed this trend. The results clearly showed that the coefficient of friction (COF) between the sheet and the tool significantly increase at elevated surface temperature; the most notable increase of the COF occurred between 40 °C and 60 °C.

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“…The influence of the nature and chemical composition of the materials of the parts involved in the friction process on some tribological properties of different categories of materials [3,12,14,[24][25][26][27]; -Sizes used to characterize friction processes between textured surfaces, with or without lubricant [3,11,28]; -…”

Section: Introductionmentioning

confidence: 99%

Change in Time of the Value of Dry and Lubricated Friction Coefficients for Surfaces Generated by Different Processing Methods

Nagîț,

Mihalache,

Dodun

et al. 2023

Lubricants

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The surfaces of the mechanical parts involved in friction processes are made using different processing methods. Each of these processing methods leads to a certain profile of the asperities of the generated surfaces. When such surfaces are subjected to friction processes, it is possible to produce a change in time in the magnitude of the friction coefficient. For experimental research, the outer cylindrical surfaces of some steel test samples were generated using various machining methods such as turning, grinding, ball and diamond burnishing, and vibroburnishing. Later, using a device adapted to a lathe, experimental tests were carried out following the time variation of the value of the friction coefficient under conditions of dry friction and lubricated friction, respectively. The results of the experimental tests were processed mathematically, being determined by empirical mathematical models that highlight the influence of the final processing methods of the surface, the presence of the lubricant, and the test duration on the variation of the friction coefficient. It was found that first, there is an increase over time in the values of the friction coefficient, and then the values of this coefficient stabilize at certain values. The increase in the coefficient of friction until reaching the stabilization value takes place in a proportion of approximately 148–305%.

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The Interaction between the Sheet/Tool Surface Texture and the Friction/Galling Behaviour on Aluminium Deep Drawing Operations

Cited by 17 publications

References 52 publications

Laser surface texturing of dies in strip drawing of DP600 steel sheet

Laser surface texturing of dies in strip drawing of DP600 steel sheet

Influence of elevated surface temperature on the formability in cold forming of aluminum alloy sheets

Change in Time of the Value of Dry and Lubricated Friction Coefficients for Surfaces Generated by Different Processing Methods

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