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- Title
Dry Metal Forming Using Volatile Lubricants Injected into the Forming Tool Through Flow-Optimized, Laser-Drilled Microholes.
- Authors
Henn, Manuel; Reichardt, Gerd; Weber, Rudolf; Graf, Thomas; Liewald, Mathias
- Abstract
A novel tribologic system was developed in which volatile lubricants (carbon dioxide—CO2 or nitrogen—N2) were used as a substitute for mineral oil-based lubricants in deep drawing processes. This process allows an intermediate medium to be introduced into the tool contact surfaces under high pressure by flow-optimized, laser-drilled microholes. This eliminates the need for subsequent cost-intensive cleaning processes as volatile lubricants evaporate while expanding to ambient pressure without leaving any residue. This article gives an overview of the current findings to enable and characterize the novel tribologic system. The areas of microhole laser drilling by ultrashort pulsed laser radiation, characterization of the novel tribologic system and realization of the system using a prototype tool will be described.
- Subjects
METALWORK; LASER beams; LUBRICATION &; lubricants; LASER drilling; PULSED lasers; CARBON dioxide
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2020, Vol 72, Issue 7, p2517
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-020-04169-6