COOLING OF A METAL STRAND PORTION

The invention relates to a method for cooling a strand portion (4) of a metal strand in a cooling zone (6) of a continuous casting machine by means of a cooling device (2), comprising a plurality of respective switching valves (8) and cooling nozzles (10), wherein for cooling the strand section (4)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WIESER, Philipp, SCHEIDL, Rudolf, FUERNHAMMER, Thomas, STELLNBERGER, René, LADNER, Peter, WAHL, Helmut, MAIRHOFER, Markus, WOESS, Stefan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES NOZZLES PERFORMING OPERATIONS POWDER METALLURGY SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for cooling a strand portion (4) of a metal strand in a cooling zone (6) of a continuous casting machine by means of a cooling device (2), comprising a plurality of respective switching valves (8) and cooling nozzles (10), wherein for cooling the strand section (4) is conveyed through the cooling zone (6) and the switching valves (8) are controlled by binary pulse width modulated control signals (38-46, 52), such that coolant flows (q) through the cooling nozzles (10) are alternately enabled or interrupted, such that for cooling a coolant (12) is applied intermittently to the strand portion (4) in the cooling zone (6). The invention further relates to a cooling device (2). A uniform supply of coolant can be achieved if the binary pulse width modulated control signals (38-46, 52) are defined in such a way that at least one of the control signals (38-46, 52) has a phase shift (ϕ, ϕ1, ϕ2, Δϕ) to a further one of the control signals (38-46, 52).