METHOD FOR CONTINUOUSLY CASTING A STEEL BEAM BLANK

摘要

A method for producing a steel beam blank comprises the steps of: continuously casting a steel beam blank strand; cooling the steel beam blank strand in a secondary cooling zone, wherein the steel beam blank strand is guided in a vertical casting plane along a curved path having its web perpendicular to the vertical casting plane, so that each of the lateral flanges has an intrados flange tip and an extrados flange tip; and straightening the steel beam blank strand behind the secondary cooling zone. In order to reliably avoid the appearance of transverse cracks in the intrados flange tips during straightening of beam blank strand, the intrados flange tips are selectively reheated between the secondary cooling and the straightening of the steel beam blank strand, by means of an external energy supply focused on the intrados flange tips.