Method of operating a continuous casting installation with compensation of deviations in water vapor pressure

A method of operating a continuous casting installation with high throughput, wherein the steel is cast into a cooled mold, the strand which is formed in the mold possessing a liquid core and such strand is withdrawn from the mold, guided and cooled, the improvement comprising the steps of:

• subjecting the surface of the strand to the action of a pressurized gaseous medium, primarily in the form of water vapor, at least at a partial region between the mold and the point of complete solidification of the strand, the pressure of the gaseous medium essentially corresponding to the ferrostatic pressure prevailing at the cast strand, the water vapor being generated by spraying the surface of the strand with water, compensating deviations of the vapor pressure from a required vapor pressure, and upon exceeding the required vapor pressure the difference therefrom is compensated by lowering the level of cooling water located in a collecting basin.

A method of operating a continuous casting installation with high throughput, wherein the steel is cast into a cooled mold, the strand which is formed in the mold possessing a liquid core and such strand is withdrawn from the mold, guided and cooled, the improvement comprising the steps of:

• subjecting the surface of the strand to the action of a pressurized gaseous medium, primarily in the form of water vapor, at least at a partial region between the mold and the point of complete solidification of the strand, the pressure of the gaseous medium essentially corresponding to the ferrostatic pressure prevailing at the cast strand, the water vapor being generated by spraying the surface of the strand with water, compensating deviations of the vapor pressure from a required vapor pressure, and rendering ineffectual the signal of a level feeler which senses the level of cooling water located in a collecting basin upon exceeding the vapor pressure and which signal when effectual opens a motor valve for draining the collecting basin.

A method of operating a continuous casting installation with high throughput, wherein the steel is cast into a cooled mold, the strand which is formed in the mold possessing a liquid core and such strand is withdrawn from the mold, guided and cooled, the improvement comprising the steps of:

• subjecting the surface of the strand to the action of a pressurized gaseous medium, primarily in the form of water vapor, at least at a partial region between the mold and the point of complete solidification of the strand, the pressure of the gaseous medium essentially corresponding to the ferrostatic pressure prevailing at the cast strand, the water vapor being generated by spraying the surface of the strand with water, compensating deviations of the vapor pressure from a required vapor pressure, upon exceeding the required vapor pressure switching-off a level feeler which senses the level of cooling water located in a collecting basin, opening a motor valve for venting excess pressure from the collecting basin, and upon reaching the required vapor pressure reclosing the motor valve and again switching-on the level feeler.