Jul 26, 2018 · Find out about the surface defects in extruded aluminium profiles and how to achieve superior surface quality through effective control of production technology. Extruded …

Aug 23, 2009 · Some of our products, have pick up marks (defects) on them. We're observing pick-up effects during and after the extrusion process. I'm trying to solve this problem so I'm …

Mar 16, 2021 · 1.1 Pickups (pick-ups) Small particles of aluminium and aluminium oxides that were torn from the surface of the aluminium profile and later settled on its surface again. They …

Dec 11, 2022 · 1.1 Pickups (pick-ups, pickups) Small particles of aluminium and aluminium oxides that were torn from the surface of the aluminium profile and later settled on its surface again. …

Pick-up and die lines are the most serious surface defects observed in common aluminum alloys such as 6063. Present evidence suggests that during extrusion a thin film of extrudate material

Jan 1, 2002 · Pick-up defect is observed as intermittent score lines of varying lengths between 3 mm and 12 mm and often terminates in a fleck of aluminum debris referred to as pick-up …

In the previous report, we focused on the mechanism of pick-up defects on the extrusion surface. The cause of the pick-up defects was the preferential adhesion of Mg and O to the die bearing …

In this study, the effects of extrusion speed and exit temperature on the degree of die pick-up during extrusion of AA6060 were investigated. The commonly known effect called die pick-up …

Jun 1, 1999 · In extrusion processes with complex cross-sectional geometries and extrusion conditions with high productivity, grain-like sloughing defects called pick-up often occur …

Extrusion defects may arise in extruded products from the starting material or billet, the deformation process itself, or from other post-processing corrective measures.