Method for the production of a metal sheet or metal strip

摘要

Method for the production of an amorphous metal sheet or metal strip, in which a metal melt is extruded from the nozzle opening of a nozzle and the extruded metal melt is diverted onto a moving quenching surface in order to cool and solidify the metal rapidly and thereby form the sheet or strip, the nozzle opening being a rectangular slot bounded by side walls, a forward nose and a rearward nose being arranged ahead of and behind the slot in the direction of motion of the quenching surface, below the nozzle, and the quenching surface moving at a speed of 10 m/s to 50 m/s and being arranged at a distance from the forward nose, the width of which is from 100 mu m to 600 mu m, and the width WF of the forward nose, measured in the direction of motion of the quenching surface, fulfilling the relationship: WF