APPARATUS FOR AUTOMATIC CONTROL OF ELECTRIC DRIVE UNIT OF SECONDARY COOLING ZONE OF CONTINUOUS CASTING MACHINE Russian patent published in 2001 - IPC

FIELD: ferrous metallurgy, namely, machines for continuous casting with multiroller drawing and straightening system. SUBSTANCE: apparatus with multiroller drawing and straightening system and with motors for rotating drawing rollers includes pickups for detecting electric current of motors of drawing rollers. Said pickups are arranged on radial and curvilinear portions for detecting total electric current values of those portions. Outputs of pickups are connected with computing unit of system for controlling motors of rollers. Apparatus includes additional pickups for detecting electric current of motors of drawing roller; additional pickups are placed on horizontal portions of continuous casting machine before and after liquid phase closing for detecting total electric current values in those portions. Outputs of said pickups are connected with computing unit. Control systems provide controlling motors of radial, curvilinear, horizontal portions; inputs of control systems are connected with computing unit. EFFECT: enhanced accuracy of distribution of effort for drawing out ingot between portions of secondary cooling zone, enhanced quality of ingot due to lowered number and depth of seat-like and normal-to-surface cracking. 2 dwg