Abstract: A nozzle for the cutting beard removal where by means of additional heat supply the beard is liquified and blown away by the kinetic energy of a gas jet are formed by an upper and a lower nozzle plate with fuel gas discharge openings and an oxygen slot formed between them which is feeding an ever increasing quantity of oxygen at its longitudinal ends. This is reached by the oxygen slot forming the discharge end of a cone emerging from a distribution chamber enlarged in its longitudinal direction.

Abstract: A flame-cutter for separating a moving billet produced by a continuous caster wherein the billet is supported by at least one billet supporting roller. The flame-cutter includes a burner having a nozzle supported for synchronous movement with the billet, means for supplying oxygen to the billet and means for interrupting the supply of oxygen to the burner when the burner passes over each of the billet supporting rollers. Means are also provided for reducing the amount of oxygen escaping from the nozzle after interruption of the supply of cutting oxygen thereby minimizing damage to the supporting rollers and permitting a narrow optimized groove to be cut in the billet.