On the mechanism of formation of back-end defects in the extrusion process

Autor:	Henry Valberg, Martin Lefstad, André L. M. Costa
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Materials science business.product_category Process (computing) Core (manufacturing) Inflow Coring Industrial and Manufacturing Engineering Material flow Artificial Intelligence Die (manufacturing) Extrusion Funnel Composite material business
Zdroj:	Procedia Manufacturing
Popis:	FEM-analysis is applied to study metal flow in aluminum extrusion with focus on how material flow defects form when the last part of the billet is extruded through an axisymmetric die. First, an overview is given of the current state of art of knowledge regarding formation of typical rear-end defects in metal extrusion. Afterwards the software DEFORM is used to model the extrusion process. It is shown how this software describes the inflow of inferior material from the outer surface and subsurface of the billet, into the core of the rear-end of the billet during the extrusion stroke. Special attention is paid on trying to understand the mechanism of formation of common defects like the funnel defect and the coring defect in the extrusion process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3babe31c19239ada0c3d165b1e1f4fa https://hdl.handle.net/11250/3057438 Zobrazit plný text záznamu