ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Twin- roll casting of magnesium alloys is a rapidly solidifying process, which can directlyproduce thin strips from molten metal. In this paper, based on a pilot vertical type twin-roll caster, 3Dmodels of twin-roll casting process were used for simulation of thermal flow and solidification ondepending of casting speed, molten pool level and pouring temperature. The effect of side dams onthermal flow behavior was also considered. Based on the analyzed results, a proper concave slotnozzle was designed to compensate temperature variation across the width of strip. Comparing withparallel type slot nozzle, it can adjust temperature distribution along the roll width continuously byadopting proper concave curves, which is more flexible than rectification boards delivery system.Strips of magnesium alloy AZ31 were produced in the pilot caster with the concave slot nozzle. Theexperiments show that surface quality of as cast strip was improved by using the new type of nozzle
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.5037.pdf
Permalink