Method and device for maintaining the planarity of the free borders in contact with welded sheets which form a continuous strip having cavities

摘要

The method consists in cooling the opposite visible faces of the borders 9a in order to prevent heat propagation. A device for the implementation of this method comprises, on the track followed by the strip 1 at the location of at least one heating station 5, stationary heat-conducting straight edges 16, 17 each having a slot intended to cover the corresponding border 9a of the moving strip, each straight edge delimiting a longitudinal internal conduit 20 connected to a cooling circuit 22. IMAGE