Patent ID: 6450242
Filing Date: 2002-09-17
Classification: B22D

Abstract:
A method for casting thin billets with a belt casting device in which liquid metal from a metallurgical vessel is fed via a feed device to an endless belt, the method comprising the steps of:a) passing liquid metal from the metallurgical vessel into a container to which the feed device is connected; b) providing a flow restriction channel part as a first casting channel part in the feed device to oppose a liquid metal stream before the liquid metal arrives at the endless belt through a second casting channel part having a larger cross-sectional area, with the first casting channel part thereby reducing the flow rate of the liquid metal stream to such an extent that the liquid metal arrives at the endless belt from an opening of a second casting channel part sized to correspond to a cross-sectional area of a finished billet at a speed which corresponds to a belt output speed and, in an impact area, has a thickness which is matched to a billet thickness; c) heating the liquid metal stream in a region of the feed device with an induction coil; d) measuring and stabilizing at a constant value at least one of a level of the liquid metal located in the container and the thickness of the billet located on the endless belt; and e) feeding presently measured values of at least one of the level and the thickness to an actuator which controls an outlet rate of the liquid metal from the metallurgical vessel.