Patent ID: 6883584
Filing Date: 2005-04-26
Classification: B22D

Abstract:
1. A method for producing a steel beam blank, comprising steps of: continuously casting a steel beam blank strand with an H-shaped cross-section having a central web between two lateral flanges; cooling said steel beam blank strand in a secondary cooling zone, wherein said steel beam blank strand is guided in a vertical casting plane along a curved path having its web perpendicular to said vertical casting plane, so that each of said lateral flanges has an intrados flange tip and an extrados flange tip, each of said intrados flange tips presenting an intrados border surface; straightening said steel beam blank strand behind said secondary cooling zone; and providing an external energy supply to said flanges between said cooling in said secondary cooling zone and said straightening of said steel beam blank strand, wherein said external energy supply is focused on each of said intrados flange tips on a boundary zone immediately beneath said intrados border surface, so as to selectively reheat said boundary zone before said straightening of said steel beam blank strand.