Property of aluminium alloy strip cast by an unequal diameter twin roll caster

2018 ◽  
Vol 2018 (0) ◽  
pp. G0400201
Author(s):  
Maho TSUCHIDA ◽  
Toshio HAGA
Keyword(s):  
Aluminium Alloy ◽  
Alloy Strip ◽  
Strip Cast ◽  
Twin Roll Caster ◽  
Twin Roll

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%.

Strip Casting of 6061 and Recycled 6061 Alloy by an Unequal Diameter Twin Roll Caster

2011 ◽  
Vol 264-265 ◽  
pp. 1911-1916 ◽  
Author(s):  
Toshio Haga ◽  
Hideki Inui ◽  
Ryoji Nakamura ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Aluminium Alloy ◽  
Surface Condition ◽  
Bending Test ◽  
Cast Strip ◽  
Fe Content ◽  
Strip Cast ◽  
Cold Rolled ◽  
Twin Roll Caster ◽  
6061 Aluminium Alloy ◽  
Twin Roll

A 6061 aluminium alloy and an alloy with increased Fe content, representing recycled 6061 aluminium alloy were cast into strips at speed of 30m/min by an unequal diameter twin roll caster. The Fe content of 6061 aluminium alloy and the model of recycled 6061 aluminium alloy was 0.36 mass% and 0.59 mass%, respectively. Ripple marks, which are typical surface defect of roll cast strips, did not occur on the surface of both as-cast strips. Fe content did not influence the surface condition of the roll-cast-strip. The as-cast strip was cold rolled down to 1 mm, T4 heat treatment was conducted, and then subjected to180 degrees bending test. The result of 180 degrees bending test shows that roll cast 6061 aluminium alloy and 6061 aluminium alloy with increased Fe as recycled had bending ability as same as that of roll-cast 6022 aluminium alloy. In the strip cast by the twin roll caster of the present study, increased Fe content did not influence on the result of the180 degrees bending test.

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.

6000 Series Aluminium Alloy Strip Casting Using a Vertical Type Twin Roll Caster

2016 ◽  
Vol 877 ◽  
pp. 45-50
Author(s):  
He Chen ◽  
Yong Li ◽  
Jia Dong Li ◽  
Guang Jun Gao ◽  
Zhao Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Aluminium Alloy ◽  
Casting Speed ◽  
Strip Casting ◽  
Alloy Strip ◽  
Cast Ingot ◽  
Cast Strip ◽  
Cast Aluminium ◽  
Twin Roll Caster ◽  
Twin Roll

A vertical type twin roll caster with two side dams was used to cast aluminium alloy strip with a thickness of about 5mm at speed higher than 10m/min. The characteristics of the twin roll caster with two side dams are as follows: The diameter of the copper roll is 500mm, the width of the copper roll is 110mm and the thickness of the copper roll sleeve is 25mm.The maximum casting speed is up to 60m/min. Using the vertical type twin roll caster, a 4.5mm thickness of 6111 strip could be cast at a speed of 30m/min. The microstructure of the as-cast strip was equiaxed and spherical, not columnar. The mechanical properties of the strip casted from the vertical type twin roll caster were almost as same as that of the strip made from the conventional cast ingot.

Globular Crystal of Al Alloy Strip Cast by High Speed Twin Roll Caster

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 430
Author(s):  
Toshio HAGA ◽  
Hisaki WATARI ◽  
Shinichi NISHIDA
Keyword(s):  
High Speed ◽  
Al Alloy ◽  
Alloy Strip ◽  
Strip Cast ◽  
Twin Roll Caster ◽  
Twin Roll
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