A method for cleaning rolling stock (5) during cold rolling of the rolling stock (5) in a tandem mill (1) which includes a plurality of mill stands (7, 9). The rolling stock (5) is moved through the tandem mill (1) in a direction of movement (3) and a cleaning liquid (26) is sprayed onto the rolling stock (5) between two roll stands (7, 9) in a spraying direction having a component opposite to that of the direction of movement (3).

A device and a method for cooling metal strips or sheets conveyed on a conveyor line, in particular hot-rolled strips in the outlet of a rolling train. For these purposes, the device includes at least one cooling beam extending across the width of the conveyor line, and the cooling beam features a connection point to which a supply tube for cooling liquid can be connected, and a number of discharge openings arranged along a longitudinal axis of the cooling beam, such that cooling liquid can be discharged through the discharge openings in the direction of the metal strip or sheet that is to be cooled. Associated with each of the individual discharge openings is a respectively adjusted flow area, such that the flow areas of the respective discharge openings decrease in a direction leading away from the connecting point along the longitudinal axis of the cooling beam.

An apparatus line for manufacturing seamless steel pipes and tubes includes: a heating apparatus for heating a steel raw material; a piercing apparatus for piercing the heated steel raw material thus forming a hollow material; and a rolling apparatus for applying working to the hollow material to form a seamless steel pipe having a predetermined shape. A cooling apparatus is arranged on an exit side of the rolling apparatus. A heated steel raw material is worked by the rolling apparatus after being pierced by the piercing apparatus, and thereafter, using a surface temperature of a hollow piece before being cooled by the cooling apparatus as a cooling start temperature, the hollow piece is cooled to a cooling stop temperature differing by 50 C. or more from the cooling start temperature and being equal to or above 600 C. at an average cooling speed of 1.0 C./s or more in terms of an outer surface temperature.

An apparatus line for manufacturing seamless steel pipes and tubes includes: a heating apparatus for heating a steel raw material; a piercing apparatus for piercing the heated steel raw material thus forming a hollow material; and a rolling apparatus for applying working to the hollow material to form a seamless steel pipe having a predetermined shape. A cooling apparatus is arranged on an exit side of the rolling apparatus. A heated steel raw material is worked by the rolling apparatus after being pierced by the piercing apparatus, and thereafter, using a surface temperature of a hollow piece before being cooled by the cooling apparatus as a cooling start temperature, the hollow piece is cooled to a cooling stop temperature differing by 50 C. or more from the cooling start temperature and being equal to or above 600 C. at an average cooling speed of 1.0 C./s or more in terms of an outer surface temperature.

A device for discharging exhaust air from the surroundings of a metal strip. The device has air quantity boosters with an opposing suction device on the other side of the conveying path in the blowing direction in order to suction and discharge the airflow generated by the air quantity boosters together with the exhaust air. In order to reduce costs for the operation of the device, a sensor device is provided in order to detect whether the metal strip is present or not and at which speed the metal strip is being moved. Additionally, a controller is provided in order to adjust the delivery rate of the air quantity boosters and the suction device depending on the measured speed.

A system for cooling rolling mill material is provided that includes a conveyor system that receives rolling mill material and passes the rolling mill material through one or more cooling regions. A cooling structure that operates uniformly across the central and edge regions of the conveyor system. The cooling structure uses a first jet of air for cooling the central portion of the rolling mill material. A nozzle deck is positioned on the edge regions of the conveyor system produces a second of jet of air for cooling the edge portions of the rolling mill. The nozzle deck includes one or more adjustable nozzle structures for controlling the air flow produced by the second jet of air by varying the size of their air passage regions.

An apparatus and method for rolling aluminum sheet uses a texture roll to roll the sheet while is it hot and has reduced yield strength. The texture rolling may be used to remediate defects in the sheet at a variety of stages in rolling, and may facilitate subsequent rolling stages.

A cooling system according to an embodiment of the present invention may comprise: a cooling part which supplies a cooling fluid to a strip; and a boiling film removal part, which physically comes into contact with the strip and removes a boiling film formed by the cooling fluid. The boiling film removal part according to the embodiment may be disposed at a position where a nuclear boiling and a film boiling are mixed together along a widthwise direction of the strip.

A cooling device cooling an undersurface of a hot rolled steel sheet that is being transported on transport rolls after finish rolling of a hot rolling step includes: width divided cooling zones that are a plurality of cooling zones into which a whole cooling zone is divided in a sheet width direction; divided cooling sections that are a plurality of cooling zones into which each of the width divided cooling zones is divided in the rolling direction; a water nozzle spraying cooling water over each of undersurfaces of the divided cooling sections; a switching mechanism switching the cooling water between impinging and not impinging on the divided cooling sections; a width direction thermometer measuring a temperature distribution in the sheet width direction; and a controller controlling operation of the switching mechanism.

Rail-manufacturing equipment that performs forced cooling on at least a head of a hot rail hot-rolled at or heated to the austenite region temperature or higher. The rail-manufacturing equipment includes a head-cooling header configured to jet a cooling medium toward the head of the rail, a head thermometer configured to measure surface temperature of the head of the rail, and a controller configured to adjust jet of the cooling medium from the head-cooling header. The controller includes a temperature-monitoring unit configured to monitor measurement results by the head thermometer during the forced cooling, and a cooling-rate controller.