Improvement of Porosity of Strip Using a Scraper on the Casting by a Vertical Type High Speed Roll Caster

2010 ◽  
Vol 146-147 ◽  
pp. 1108-1113 ◽  
Author(s):  
Ryoji Nakamura ◽  
Yusuke Shiotsu ◽  
Kosuke Komeda ◽  
Shinji Kumai ◽  
Hisaki Warari
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Alloy Strip ◽  
Roll Speed ◽  
Strip Cast ◽  
Twin Roll Caster ◽  
Twin Roll

Porosity occurred in the 5182 aluminum alloy strip cast by a vertical type high speed twin roll caster. The porosity was caused by high-roll-speed and low-roll-load. Improvement of the porosity was tried by a scraper. The scraper was mounted on the roll, and the scraper was moveable depend on the thickness of the solidified layer on the roll. The scraper scribed the semisolid layer to improve the porosity. The scraper was useful to decrease the porosity of roll cast 5182 aluminum alloy strip.

Inline Rolling of 5182 Aluminum Alloy Strip Cast by a Vertical Type High Speed Twin Roll Caster

2010 ◽  
Vol 139-141 ◽  
pp. 477-480
Author(s):  
Ryoji Nakamura ◽  
Shuya Hanada ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Rolling Speed ◽  
Center Line ◽  
Alloy Strip ◽  
Ripple Mark ◽  
Roll Casting ◽  
Strip Cast ◽  
Twin Roll Caster ◽  
Twin Roll

An inline hot rolling was operated on 5182 aluminum alloy strip cast using a vertical type high speed caster (VHSTRC) at the speed of 60 m/min. A porosity existing at center line of the thickness and a ripple mark on the surface, these are typical defects of the strip cast by the VHSTRC, could be improved by the inline rolling. The rolling speed was as same as the roll-casting-speed of 60m/min. The temperature of the strip, when the inline rolling was operated, was 450oC. The reduction of the strip of the inline rolling was 35%.

scholarly journals Effect of Roll Surface on Aluminum Alloy Strip Fabricated by a High-Speed Twin Roll Caster

2013 ◽  
Vol 79 (804) ◽  
pp. 1156-1160
Author(s):  
Takuya YAMASHIKI ◽  
Toshio HAGA ◽  
Shinji KUMAI ◽  
Hisaki WATARI
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Alloy Strip ◽  
Roll Surface ◽  
Twin Roll Caster ◽  
Twin Roll

scholarly journals Effect of Side-Dam Plate on Burrs at Edges of Aluminum Alloy Strip Fabricated by a High Speed Twin Roll Caster

2013 ◽  
Vol 79 (804) ◽  
pp. 1152-1155
Author(s):  
Takuya YAMASHIKI ◽  
Yuki SHIRAKAWA ◽  
Toshio HAGA ◽  
Shinji KUMAI ◽  
Hisaki WATARI
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Alloy Strip ◽  
Twin Roll Caster ◽  
Twin Roll

716 Effect of side-dam plate on burrs at edges of aluminum alloy strip fabricated by a high-speed twin roll caster

2012 ◽  
Vol 2012.20 (0) ◽  
pp. _716-1_-_716-4_
Author(s):  
Takuya YAMASHIKI ◽  
Yuki SHIRAKAWA ◽  
Toshio HAGA ◽  
Shinji KUMAI ◽  
Hisaki WATARI
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Alloy Strip ◽  
Twin Roll Caster ◽  
Twin Roll

715 Effect of roll surface on aluminum alloy strip fabricated by a high-speed twin roll caster

2012 ◽  
Vol 2012.20 (0) ◽  
pp. _715-1_-_715-5_
Author(s):  
Takuya YAMASHIKI ◽  
Toshio HAGA ◽  
Shinji KUMAI ◽  
Hisaki WATARI
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Alloy Strip ◽  
Roll Surface ◽  
Twin Roll Caster ◽  
Twin Roll

Roll Casting of Recycled AA5182

2011 ◽  
Vol 121-126 ◽  
pp. 4667-4670
Author(s):  
Toshio Haga ◽  
Kosuke Komeda ◽  
Kenta Mtsuoka ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
High Speed ◽  
Model Alloy ◽  
Drawing Ratio ◽  
Roll Speed ◽  
Roll Casting ◽  
Twin Roll Caster ◽  
Twin Roll ◽  
Fe Addition

Roll casting of the model alloy of recycled AA5182 aluminum alloy was investigated. Fe up to 0.6% was added to the AA5182 to make the model alloys of recycled AA5182. Increase of 0.6% of Fe means that the recycle was three times operated. A vertical type high speed twin roll caster was used. Some devices were operated on the twin roll caster to increase the cooling rate in order to make impurity fine. The roll speed could be increased up to 80m/min. The roll-castability did not become worse by the addition of the Fe. The LDR (limiting Drawing Ratio) was 1.9 when the Fe addition was 0.6. The deterioration of the mechanical properties by the addition of impurity Fe was very small.

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