METHOD FOR COOLING METALLIC STRAND, AND SWITCHING VALVE FOR INTERMITTENTLY PERMITTING AND SHUTTING OFF VOLUME FLOW OF COOLING MEDIUM

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to metallurgy, particularly, to continuous metal casting. Method of cooling steel workpiece in roller guide includes periodic supply of cooling medium to workpiece through nozzle (2) by means of switching valve (1), active driving of switching valve (1) by a binary control signal (5). Control is carried out depending on desired cooling power. Depending on control signal (5) switching element (1) is converted from closed position into open position for passage of cooling medium (21) through switching valve (1) and supply of cooling medium through cooling nozzle (2) onto workpiece (3) and vice versa.;EFFECT: higher intensity of cooling in a wide range in a simple, stable and energy-efficient manner.;23 cl, 14 dwg