2026-04-23T07:43:57Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/53612024-03-05T11:40:58Zcom_20.500.11984_473col_20.500.11984_478

00925njm 22002777a 4500 dc Zabala, Alaitz author GALDOS, Lander author Llavori, Inigo author Aginagalde, Andrea author Mendiguren, Joseba author Sáenz de Argandoña, Eneko author 2021 The increasing demands for lightweight design in the transport industry have led to an extensive use of lightweight materials such as aluminium alloys. The forming of aluminium sheets however presents significant challenges due to the low formability and the increased susceptibility to galling. The use of tailored workpieces and controlled die roughness surfaces are common strategies to improve the tribological behaviour, whilst galling is still not well understood. This work is aimed at analysing the interplay between the sheet and tool surface roughness on the friction and galling performance. Different degrees of Electro Discharge Texturing (EDT) textures were generated in AA1050 material strips, and tooling presenting different polishing degrees were prepared. Strip drawing tests were carried out to model the tribological condition and results were corroborated through cup drawing tests. A new galling severity index (GSI) is presented for a quick and quantitative determination of both galling occurrence and severity. The present study underlines the key role of die topography and the potential of die surface functionalization for galling prevention. 2075-4701 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=164513 https://hdl.handle.net/20.500.11984/5361 surface texturing Friction galling Metal drawing aluminium strip drawing test The Interaction between the Sheet/Tool Surface Texture and the Friction/Galling Behaviour on Aluminium Deep Drawing Operations