Dry metal forming using volatile lubricants injected into the forming tool through flow-optimized, laser-drilled microholes
| Autor: | Rudolf Weber, Manuel Henn, Thomas Graf, Mathias Liewald, Gerd Reichardt |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Materials science
Flow (psychology) Metallurgy General Engineering chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention 010309 optics chemistry law 0103 physical sciences medicine General Materials Science Deep drawing Current (fluid) 0210 nano-technology Mineral oil Carbon Laser drilling medicine.drug Ambient pressure |
| DOI: | 10.18419/opus-13303 |
| Popis: | 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. Deutsche Forschungsgemeinschaft Projekt DEAL |
| Databáze: | OpenAIRE |
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