Macro and Micro Structuring of Deep Drawing's Tools for Lubricant Free Forming

Mousavi, Ali; Schomäcker, Michael; Brosius, Alexander

doi:10.1016/j.proeng.2014.10.252

Cited by 15 publications

(8 citation statements)

References 13 publications

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“…Reducing the wear and the friction coefficient is the target for current investigations to integrate dry metal forming in industrial mass production. Dry deep drawing of various sheet metals was investigated for example by controlled selective oxidation of cold work steel surfaces [3], by using ceramic tools [4] or by macro-and microscopically modified surfaces of a deep drawing tool [5]. Comprehensive tribological aspects in dry forming were presented by [6].…”

Section: Introductionmentioning

confidence: 99%

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

Freiße

Köhler

Seefeld

et al. 2015

MATEC Web of Conferences

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Abstract. Regarding the optimization of forming technology in economic and environmental aspects, avoiding lubricants is an approach to realize the vision of a new green technology. The resulting direct contact between the tool and the sheet in non-lubricated deep drawing causes higher stress and depends mainly on the material combination. The tribological system in dry sliding has to be assessed by means on the one hand of the resulting friction coefficient and on the other hand of the wear of the tool and sheet material. The potential to generate tailored tribological systems for dry metal forming could be shown within the investigations by using different material combinations and by applying different laser cladding process parameters. Furthermore, the feasibility of additive manufacturing of a deep drawing tool was demonstrated. The tool was successfully applied to form circular cups in a dry metal forming process.

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Section: Introductionmentioning

confidence: 99%

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

Freiße

Köhler

Seefeld

et al. 2015

MATEC Web of Conferences

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“…The experimental values were determined after 100 mm of running test in order to ensure stable behavior of the Strip Drawing Machine. Mousavi et al [26] found similar results related to the numerical simulation of steel sheet forming using tools with a superficial structure and slightly inferior to the results obtained by Wakuda et al [27]. The last evaluating the surface structure effect on the friction reduction in the contact between ceramic and steel.…”

Section: Of 14mentioning

confidence: 73%

“…The higher the f value means, the smaller the contact area between the tool surfaces and the magnesium alloys sheets. The smaller contact area reduces the shear stresses that are caused by the frictional forces [26,29,30]. Based on this, this paper focused on increasing the f values of the tools to investigate the respective frictional behavior.…”

Section: Resultsmentioning

confidence: 99%

Tribological Investigations on Tool Surfaces for Temperature-Supported Forming of Magnesium AZ31 Sheets

et al. 2020

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Aiming to decrease friction coefficient ( μ ) during the forming of magnesium alloy sheets, nine (9) tools with different hole geometries in their surface (flat, elliptical, and circular) were manufactured from steel Boehler W400 VMR (as known as DIN 1.2343). Tribological investigations were accomplished on a strip drawing machine at 288 °C without lubricants. When compared with a standard tool (surface flat), on average, tools with circular geometries in their surface showed the smallest friction coefficient, while tools with elliptical geometries shown higher. The friction coefficient also was confronted with the ratio between area occupied by holes in the surface of the tool and the total tool surface (i.e., factor f (%)), hole diameter (Ø), and the distance between circle centers (d(c,c)). Principal Component Analysis (PCA) complemented the experimental approach. In summary, both approaches (experimental and theoretical) indicated that the manufactured tool with circular geometries on its surface presented lower friction coefficient values on the forming processes of the magnesium AZ31 sheets.

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“…Other researchers have attempted even eliminating the lubrication in deep drawing process Mousavi et al find out a method for this, by means of macro structured tool, in order to control of the friction forces and the material flow and also coating them with an adapted coating film [8].…”

Section: Lubricating Conditionsmentioning

confidence: 99%

Environmental Aspects Regarding The Incremental Forming Process

Tera¹

2015

ACTA Universitatis Cibiniensis

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Macro and Micro Structuring of Deep Drawing's Tools for Lubricant Free Forming

Cited by 15 publications

References 13 publications

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

Tribological Investigations on Tool Surfaces for Temperature-Supported Forming of Magnesium AZ31 Sheets

Environmental Aspects Regarding The Incremental Forming Process

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