Evaluation of Lubricants for Stamping of Al 5182-O Aluminum Sheet Using Cup Drawing Test

Ju, Long; Mao, Tingting; Malpica, Julio; Altan, Taylan

doi:10.1115/1.4030750

Cited by 14 publications

(10 citation statements)

References 15 publications

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“…The effects of surface texturing, electro-discharge texturing and mill finish on friction behaviour were analysed by Ju et al 17 while stamping of Al 5182-O aluminium sheet using cup drawing test. The numerical simulation was performed for different lubrication conditions to determine the coefficient of friction at the tool and work piece (blank).…”

Section: Thinning Effectmentioning

confidence: 99%

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A review on effect of thinning, wrinkling and spring-back on deep drawing process

Babu

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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There are various processes practiced in a market for manufacturing axisymmetrical cup with significant forming depth among which deep drawing process is most prompt. The deep drawing process is a forming process with ongoing interest which will have a major impact on industries in coming years. This article focuses on the current status and potential of future development of technology in the deep drawing process. First, it describes various types of approaches and techniques used in the deep drawing of different materials. This is followed by brief reviews of advantages and limitations of these technologies with its application in industries. The details of these technologies are just referred rather than explaining in detail. The further part of this article focuses on advanced methods for predicting defects like thinning, wrinkling and spring-back in deep drawing process which are mostly responsible for rejection of the components. The opportunity in the development of flexibility in deep drawing process is covered with an observed barrier in the prediction of defects such as thinning, wrinkling and spring-back. The obtained evidence indicates that deep drawing process may not be applicable for all materials, but represents an excellent opportunity in the drawing of multilayer metal and composite material sheets to complex shapes.

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Section: Thinning Effectmentioning

confidence: 99%

“…Comparison of thickness obtained from experimental and simulation results for lubrication F: (a) rolling direction and (b) transverse direction. 17 …”

Section: Thinning Effectmentioning

confidence: 99%

A review on effect of thinning, wrinkling and spring-back on deep drawing process

Babu

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…The drawbead friction test was also used by Figueiredo et al 66 to show the strong dependency of die surface roughness on μ variation. Ju et al 67 and Subramonian et al 68 used the cup deep drawing process as a simulative test to characterize the lubricants for stamping of aluminum alloy and steel grade sheets. They minimized the error between experimental and finite element simulation data to evaluate μ .…”

Section: Measurement Of Friction In Manufacturingmentioning

confidence: 99%

Friction in micromanufacturing

Dixit

Yadav

Narayanan

et al. 2018

Journal of Micromanufacturing

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Friction plays a vital role in several micromanufacturing processes. Since the eighteenth century, the phenomenon of friction has been widely investigated, but it is still one of the least understood subjects. In this article, a review of studies on friction in micromanufacturing is presented with a background of existing knowledge at the macro level. While there is a general recognition that force of friction is several times higher in micromanufacturing than that in conventional manufacturing, there is a dearth of robust and reliable models, especially suited for micromanufacturing. At present, a pocket model can be considered as the only friction model for micromanufacturing, which demonstrates how friction increases considerably with diminishing size under lubricated conditions. However, this model does not capture the physics of friction under dry conditions, which may be heavily dependent on the grain size as well. There are several contradictory results in the literature, particularly with regard to the roles of surface roughness and temperature. Thus, there is a need to carry out an in-depth investigation on the tribology of micromanufacturing processes.

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“…The sheets samples were cleaned by acetone and then lubricated in both sides. Cup drawing test (CDT) as a regular lubrication test in sheet metal stamping [3,12] was used for the evaluation of lubricants. Ten different lubricants suggested by lubricant companies, for deep drawing of AHSS, were tested.…”

Section: Tools Sheetmentioning

confidence: 99%

Temperature Increase in Forming of Advanced High-Strength Steels Effect of Ram Speed Using a Servodrive Press

Fallahiarezoodar

Peker

Altan

2016

Journal of Manufacturing Science and Engineering

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In forming of advanced high-strength steel (AHSS), the temperature increase at die/sheet interface affects the performance of lubricants and die wear. This study demonstrates that finite-element (FE) analysis, using commercially available software, can be used to estimate temperature increase in single as well as in multiple stroke operations. To obtain a reliable numerical process design, the knowledge of the thermal and mechanical properties of the sheet as well as the tools is essential. Using U-channel drawing the thermomechanical FE model has been validated by comparing predictions with experimental results. The effect of ram speed and stroking rate (stroke per minute (SPM)) upon temperature increase in real productionlike operation have been investigated. Deep drawing of CP800 and DP590 sheets in a servodrive press, using an industrial scale die, has been studied. Thinning distribution and temperatures in the drawn part have been investigated in single and multiple forming operations. It is found that temperatures may reach several 100 deg and affect the coefficient of friction (COF). The values of COF under productionlike conditions were compared to that obtained from laboratory experiments. This study illustrates that in forming AHSS, (a) the temperature increase at the die/sheet interface is relatively high and should be considered in process design stage, and (b) the lubricant performance is significantly affected by the ram speed and sheet/die interface temperature during deformation.

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Evaluation of Lubricants for Stamping of Al 5182-O Aluminum Sheet Using Cup Drawing Test

Cited by 14 publications

References 15 publications

A review on effect of thinning, wrinkling and spring-back on deep drawing process

A review on effect of thinning, wrinkling and spring-back on deep drawing process

Friction in micromanufacturing

Temperature Increase in Forming of Advanced High-Strength Steels Effect of Ram Speed Using a Servodrive Press

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