Evaluation of deep drawing force under different friction conditions

Lăzărescu, Lucian; Banabic, Dorel

doi:10.1051/matecconf/201713705003

MATEC Web Conf.

2017

DOI: 10.1051/matecconf/201713705003

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Evaluation of deep drawing force under different friction conditions

Lucian Lăzărescu

Dorel Banabic

Abstract: Abstract. The purpose of this study is to investigate the variation of the required punch load during the deep drawing process under different friction conditions. In this regards, several deep-drawing tests of cylindrical cups were conducted under four friction conditions at the toolblank interface. The first case was the dry deep-drawing, considered as a reference friction condition, while in the other three cases hydraulic oil, lithium-based grease and animal fat were used as lubricants. For each friction c… Show more

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Cited by 3 publications

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Experimental and numerical optimization of deep drawing process parameters for square medical container design with the Taguchi method

Taşkın,

Dengiz

2024

Int J Adv Manuf Technol

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Medical containers that sterilize surgical instruments are constantly needed in the healthcare industry. In line with this need, improvements in the fabrication of medical containers are important. Determining the design factors of medical containers fabricated by deep drawing saves time and cost. This study determined, the design factors of square medical containers and experimentally verified the deep drawing process modeled in Abaqus/Explicit finite element (FE) software. Taguchi statistical method was used to reduce the number of experiments. Blank holder force (BHF), punch radius (RP), die radius (RD), coefficient of friction between die and blank (µDB), coefficient of friction between punch and blank (µPB), coefficient of friction between holder and blank (µHB) as variable factors while selecting thickness reduction (TR) and maximum punch force (PF) were selected as output parameters. The effect of variable factors on the output parameters was determined by ANOVA analysis. As a result of the examinations, it was deter-mined that TR and PF increased as BHF, µDB and µHB values increased, whereas they decreased as RP and RD increased. On the other hand, it was determined that TR decreased and PF increased as µPB increased. In addition, the corners of the sheets were chamfered in different sizes to prevent the formation of ears in the containers. Finally, the appropriate chamfer size was determined by examining the sheet thicknesses.

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Experimental and numerical optimization of deep drawing process parameters for square medical container design with the Taguchi method

Taşkın,

Dengiz

2024

Int J Adv Manuf Technol

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Determination of the Coefficient of Friction Under Cold Tube Drawing Using FEM Simulation and Drawing Force Measurement

Necpal

Martinkovič

Václav

2018

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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The purpose of this article is to describe the methodology to define coefficient of friction between a tool and a forming material during tube cold draw technology process. In this regard, an experimental drawing process was done by using the tensile testing machine. The tensile testing machine was modified by additional equipment that allows drawing the tube. During the drawing, the force was recorded. Subsequently, the finite element simulation of cold draw forming was used to generate load-stroke curves with different friction coefficient. The friction coefficient was estimated by comparing the load stroke and the force recorded curves.

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Theory and practice of asymmetrical longitudinal rolling

ILCA¹

2021

JESI

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"In the national and international literature of the rolling theory, it is usually resented the plastic distortion between cylinders with equal diameter, meaning the symmetrical rolling, although this process represents only an abstract opposed to the normal conditions, because there exists a difference between the working diameters of the cylinders, and sometimes right after construction the rolling mill is equipped with cylinders of different diameters. It is worth mentioning that for a series of aspects like: the distribution of the unitary pressure on the contact surfaces, the reduction between the cylinders, the bending of the bar exiting from among the cylinders and many others, there are contradictory opinions which are explained through the difficulties that the experimental study of these phenomena imposes, but also because of the different factors which influence or modify the volumetric pressure scheme of the metal material at rolling. For the research of these difficult phenomena the author of the paper conceives an original appliance which allows experiments in order to reach conclusions for the rolling theory among equal diameter cylinders, but also for the industrial practice."

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Evaluation of deep drawing force under different friction conditions

Cited by 3 publications

References 10 publications

Experimental and numerical optimization of deep drawing process parameters for square medical container design with the Taguchi method

Experimental and numerical optimization of deep drawing process parameters for square medical container design with the Taguchi method

Determination of the Coefficient of Friction Under Cold Tube Drawing Using FEM Simulation and Drawing Force Measurement

Theory and practice of asymmetrical longitudinal rolling

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