Mold Shape Control for Direct Chill Ingot Casting

摘要

Aluminum direct chill ingot casting with dynamic rolling face mold walls provides many benefits to casters and rolling mills. Among these are higher casting speeds, less scalp, mold size flexibility and more consistent ingot stacking. A newly developed system uses 3 active and 2 passive points on each rolling face mold wall to control the ingot's profile. Positioning the points along the mold wall prior to a cast allows profile optimization for nearly any mold size. The active points are controlled to move the rolling face mold walls up to a predetermined position at any particular cast length. The mold rolling face displacement is developed to match the alloy, casting speed and other factors. The operational principle, as well as laboratory results are presented.