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Effects of Extrusion Process Conditions on "Die Pick-Up" - Tapa blanda

Peris, Robbie; Pasang, T; Chen, Z. W

 
9783836484312: Effects of Extrusion Process Conditions on "Die Pick-Up"
Tapa blanda
ISBN 10: 3836484315 ISBN 13: 9783836484312
Editorial: VDM Verlag Dr. Mueller e.K., 2008

Sinopsis

In this research AA6060 alloy was used and was extruded at 25m/min, 30m/min, 35m/min, 40m/min and 45m/min for a particular profile. The highest exit temperature increased from 542°C to 567°C when the extrusion speed was increased from 25m/min to 45m/min. Three types of die pick-up were identified. They were named as normal pick-up, die line pick-up and lump pick-up. Normal pick-up occurred regardless of the extrusion speed and exit temperature; however the amount of normal pick-up did not increase when the extrusion speed was increased. Die line pick-up occurred when the extrusion speed was 45m/min and appeared only on the die lines. Lump pick-up is not significant since it was very rare. AA6060 (0.4%Mg and 0.5%Si) alloy has about 0.27% excess silicon and therefore at 555°C, Mg2Si particles react with aluminium and excess silicon to form liquid. However normal pick-up and die line pick-up still occurred at temperatures lower and higher than 555°C and therefore it confirms that eutectic reactions do not influence formation of pickup. Therefore die pick-up is most likely to be caused due to a mechanical process rather than a metallurgical process.

"Sinopsis" puede pertenecer a otra edición de este libro.

Reseña del editor

In this research AA6060 alloy was used and was extruded at 25m/min, 30m/min, 35m/min, 40m/min and 45m/min for a particular profile. The highest exit temperature increased from 542°C to 567°C when the extrusion speed was increased from 25m/min to 45m/min. Three types of die pick-up were identified. They were named as normal pick-up, die line pick-up and lump pick-up. Normal pick-up occurred regardless of the extrusion speed and exit temperature; however the amount of normal pick-up did not increase when the extrusion speed was increased. Die line pick-up occurred when the extrusion speed was 45m/min and appeared only on the die lines. Lump pick-up is not significant since it was very rare. AA6060 (0.4%Mg and 0.5%Si) alloy has about 0.27% excess silicon and therefore at 555°C, Mg2Si particles react with aluminium and excess silicon to form liquid. However normal pick-up and die line pick-up still occurred at temperatures lower and higher than 555°C and therefore it confirms that eutectic reactions do not influence formation of pickup. Therefore die pick-up is most likely to be caused due to a mechanical process rather than a metallurgical process.

"Sobre este título" puede pertenecer a otra edición de este libro.

Editorial
VDM Verlag Dr. Mueller e.K.
Año de publicación
2008
Idioma
Inglés
ISBN 10 
3836484315
ISBN 13 
9783836484312
Encuadernación
Tapa blanda
Número de páginas
108
Contacto del fabricante
no disponible
Persona responsable
no disponible