STRIP HOT ROLLING METHOD Russian patent published in 2006 - IPC B21B1/26 

FIELD: rolled stock production, possibly manufacture of wide hot rolled strips, for example of tube steels.

SUBSTANCE: method comprises steps of rolling metal in rough group of stands of hot rolling mill; descaling strip by finish hydraulic breaking off scale from surface of rolled piece before finish stand group of mill; rolling strip in finish continuous groups of stands and cooling it between stands and in outlet roller table; then coiling strip. In intermediate roller table after rough stand group and before finish scale breaking off, surface of rolled strip is preliminarily cooled by differentiated cooling along length of rolled piece by means of water-air mixture. At side of upper surface of rolled strip streams of water-air mixture are fed along rolling axis by inclination angle 0 - 90° relative to vertical line simultaneously in opposite directions. At lower side of surface of rolled strip streams of water-air mixture are fed in plane normal relative to rolled piece motion direction.

EFFECT: optimal microstructure of hot rolled strip, elimination of flaw such as "rolled-in scale" due to controlled cooling of rolled piece in intermediate roller table at maximum efficiency of wide strip hot rolling mill.

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