Tenner J (2019)
Publication Type: Thesis
Publication year: 2019
Publisher: FAU University Press
Edited Volumes: FAU Studien aus dem Maschinenbau
DOI: 10.25593/978-3-96147-197-3
Since lubricants and cleaning detergents contain environmentally harmful substances and lead to longer process chains due to the necessity of lubricating and cleaning of formed parts the scope of this work was the realization of dry deep drawing. Motivated by the ecological and economical potentials of lubricant free forming, the consequences of the abandonment of lubricants were analyzed in forming tests with a zinc coated deep drawing steel and two aluminum alloys. Especially the direct contact of aluminum alloys with the tools led to wear and damage on the sheet surfaces due to an increased friction and adhesion tendency. In order to reduce friction, the tool surfaces were finished with different strategies and coated with varying amorphous carbon based coatings. Several strip drawing and dry deep drawing tests revealed that a low tool roughness leads to beneficial tribological behavior independent from the sheet material. However, a tungsten doping of the coatings results in increased tool wear. The influence of laser generated micro structures depends on their depths and degree of coverage. Tribological correlations were analyzed under dry conditions and it was shown that dry deep drawing can be realized depending on the properties of the contact partners and the selected surface modifications.
APA:
Tenner, J. (2019). Realisierung schmierstofffreier Tiefziehprozesse durch maßgeschneiderte Werkzeugoberflächen (Dissertation).
MLA:
Tenner, Jennifer. Realisierung schmierstofffreier Tiefziehprozesse durch maßgeschneiderte Werkzeugoberflächen. Dissertation, FAU University Press, 2019.
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