Electroconductive ceramic tooling for dry deep drawing

Tamaoki, Kenji; Manabe, Katsushi; Kataoka, Seiji; Aizawa, Tatsuhiko

doi:10.1016/j.jmatprotec.2009.08.020

Cited by 20 publications

(7 citation statements)

References 5 publications

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“…In this case, the limiting drawing ratio is close to the value within lubricated processes. 27 These investigations showed that the sensibility of tribological systems is also given in metal forming. The two investigations addressed different material combinations, leading to the reported differences.…”

Section: State Of Researchmentioning

confidence: 99%

Dry metal forming: Definition, chances and challenges

Vollertsen

Schmidt

2014

Int. J. of Precis. Eng. and Manuf.-Green Tech.

107

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In metal forming, lubricants are still used to prevent corrosion, to reduce friction, wear and tool load as well as to protect the workpieces and intermediates. In economic and ecological points of view, the challenge is the avoidance of lubricant usage. Within this article we define the term of dry metal forming, a technology which contributes an approach to establish green technology in mass production. Regarding this, the benefits of this technology are shown. Three different approaches exist to achieve a dry forming process: ceramic tools, self-lubricating coating systems and hard material coatings. Concerning this matter, the state of research in dry metal forming is reviewed within this paper.

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Section: State Of Researchmentioning

confidence: 99%

Dry metal forming: Definition, chances and challenges

Vollertsen

Schmidt

2014

Int. J. of Precis. Eng. and Manuf.-Green Tech.

107

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“…Table 2 summarizes the optimum conditions in this die sinking FDM for rough machining, semifinishing, and finishing, respectively. As stated in a previous paper [10], the polarity, the current peak, and the pulse width were optimized to each process with consideration of the trade-off-balancing between the surface roughness and the removal rate in practical operation. In this experiment, shaping into final ceramic die gradually advances from rough machining through semifinishing to finishing.…”

Section: Edm Conditionsmentioning

confidence: 99%

“…Electroconductive ceramic dies were first proposed as a practical tooling by the electric discharge machining (EDM) [10]. Among several candidate materials, zirconia-based electroconductive composite ceramic (ZrO2-WC) tooling was found to have an equivalent deep drawability in dry to conventional alloy tool steel (SKDl 1) die with lubricant.…”

Section: Introductionmentioning

confidence: 99%

Continuous Dry Cylindrical and Rectangular Deep Drawing by Electroconductive Ceramic Dies

Tamaoki

Manabe

Kataoka

et al. 2013

Journal of Manufacturing Science and Engineering

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Two types of electroconductive cer~amic tools are employed in this study to describe the dry deep drawing behavior of cold rolled steel sheets into cylindrical and rectangular cups. Each of electroconductive ceramic tools is machined by die sinking electric discharge. Four experimental setups are also pr-epared to investigate the effect of the surface roughness on the quality of dry deep drawing: the unlapped and the lapped electroconductive cer~amic dies in dry condition and the unlubricated and the lubricated SKDll die. Fven without lubricating oils, cylindrical and rectangular cups are successfully deep drawn over 10,000 by the present tooling. Fwthermore, compared to the lubricated SKDll tooling, surface r'oughness of deep drawn cups is reduced by the present ceramic tooling. Fine finishing in ceramic tooling never leads to low surface roughness in the deep drawn cups since the work materials make unconstr~airied plastic flow in the direction of thickness. Hence, the unlapped electroconductive ceramic tooling is favored for practical ceramic tooling to preserve well-defined contact interface between metallic work sheets and cer'amic tools in dry deep drawing. In addition, the rectangular cup drawing is evaluated by more severe conditions than the cylindrical cup drawing because the stress concentrates on the corner parts. Through this test, it is demonstrated that the electroconductive ceramic tooling has a potential of practical dry deep drawing.

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“…Increasing efforts have been made to decrease the amount of mineral oil used or to replace it with environmentally friendly lubricants [1]. Chlorine-, amine-and bond rite-free lubricants, and closed systems of lubrication and cleaning are practically discussed as feasible alternatives [2]. Nevertheless, the complete avoidance of lubricant would be the best variant.…”

Section: Introductionmentioning

confidence: 99%

Deep drawing with macro structured for an environmentally friendly process

Brosius¹,

Mousavi²

2020

Journal of Machine Engineering

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The efficient use of resources are becoming more important due to economic and environmental requirements. In widely used forming processes like deep drawing an avoidance of lubricantsnamely dry deep drawingis a key factor for saving resources. In this paper, a combined approach consisting of a macro-structured tool design and a special modified protective coating is presented. The combination ensures a stable process with a sufficiently wide process window under dry conditions. The absence of lubricants in critical areas has to be compensated by tetrahedral amorphous carbon ta-C films which is additionally structured by Direct Laser Interference Patterning (DLIP) for further improvement of the tribological performance.

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Electroconductive ceramic tooling for dry deep drawing

Cited by 20 publications

References 5 publications

Dry metal forming: Definition, chances and challenges

Dry metal forming: Definition, chances and challenges

Continuous Dry Cylindrical and Rectangular Deep Drawing by Electroconductive Ceramic Dies

Deep drawing with macro structured for an environmentally friendly process

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