Abstract: A pressurized water drain apparatus, for cooling rolling stock, has a pressurized cooling pipe heat exchanger for applying water through nozzle heads onto the rolling stock in a parallel flow and a storage chamber at an outlet of the cooling pipe heat exchanger. The storage chamber includes a deflection system with guiding funnels, a rolling stock outlet and a water outlet. A steam-barrier chamber is connected to the rolling stock outlet of the storage chamber and has a guide funnel with a diameter B and a bifurcated pipe with an input at a top of the steam barrier-chamber and ducts extending down sides of the steam-barrier chamber with outlets opening into the steam-barrier chamber below the guide funnel a distance A.

Abstract: Apparatus for cooling at least two bars travelling in parallel linear paths after having been formed from a larger bar in a rolling mill, comprises a common antechamber for receiving the bars, a cooling water inlet and a cooling water outlet communicating with the antechamber, first and second common nozzle chambers, the first nozzle chamber being arranged for receiving the bars from the antechamber and the second nozzle chamber being arranged for receiving the bars from the first nozzle chamber, each of the nozzle chambers being provided with a respective cooling water inlet communicating with the respective nozzle chamber through a respective equalizing chamber, each of the nozzle chambers containing for each of the bars a respective funnel for guiding the bar and a nozzle for receiving the bar from the funnel, the nozzle having passages for conducting water from the chamber into contact with the bar, communicating with each of the nozzles a respective heat exchanger pipe for receiving a respective one of t

Abstract: A method for pressurized water quenching of rolled steel products wherein the product is cooled so abruptly on its surface, at a quenching from a final rolling temperature of approximately 1000.degree. C. to an equilibrium temperature of above 500.degree. C., the temperature of the core immediately after the completion of the quenching is no more than only 30.degree. C. below the original final rolling temperature. The shorter cooling periods lead to a thinner martensitic layer, and a greater portion of the ferritic-perlitic core mass resulting in an increase in ductility with little change in strength.