Vertical die continuous casting manner and its mold null of rectangular profile aluminum alloy

摘要

PROBLEM TO BE SOLVED: To provide a vertical type continuous dating method for a rectangular cross sectional aluminum alloy cast slab by which the aluminum cast slab without casting the crack of the cast slab can be cast. ;SOLUTION: The molten aluminum alloy is charged from the upper part of a vertical opening type forced cooling mold and a solidified shell is formed by primarily cooling with the mold and also, the cast slab forming the solidified shell is drawn out from the lower part of the forced cooling mold and cooling medium is made in direct contact with the surface of the drawn-out cast slab to execute a secondary cooling. In such a case, the secondary cooling medium fluid is injected so that the collision flow rate of the secondary cooling medium to be made in direct contact with the surface of the cast slab is uniformed, and is collided so that the collided position becomes horizontal on the surface of the cast slab.;COPYRIGHT: (C)1998,JPO