Crystallizer with rollers for a continuous casting machine

摘要

Crystallizer comprising two crystallizer rollers disposed substantially parallel to each other to define a meniscus of liquid steel arriving from a tundish. The crystallizer rollers are provided inside with cooling means and are able to rotate in opposite directions to convey the liquid steel downwards while it is solidifying in contact with the crystallizer rollers. The cooling means comprise a plurality of holes disposed in proximity with the peripheral surface of each crystallizer roller and inside which a cooling liquid is able to circulate. The cooling liquid flows through at least some of the holes in the opposite direction with respect to the remaining holes.