{ "item_title" : "Effects of Extrusion Process Conditions on Die Pick-Up", "item_author" : [" Robbie Peris", "Z. W. Chen", "T. Pasang "], "item_description" : "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.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/3/83/648/431/3836484315_b.jpg", "price_data" : { "retail_price" : "52.92", "online_price" : "52.92", "our_price" : "52.92", "club_price" : "52.92", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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