Abstract: A system for rolling metal sheet having a substantially uniform flatness including a rolling mill including a pair of work rollers for reducing the thickness of a metal sheet, an induction heating apparatus in close proximity to at least one roller, bending jacks corresponding to each of the rollers, and a cooling spray system in proximity to rollers; a flatness measuring device positioned to measure a differential in flatness of the metal sheet; and an mill control interface connected between the flatness measuring device and the rolling mill's actuators, in which the mill control interface is configured to actuate the induction heating apparatus, the bending jacks and the cooling spray system to substantially eliminate flatness differentials is the metal sheet's flatness. The induction coil heating apparatus is configured to eliminate high tension on the strip edges caused by the temperature gradients in the work rolls at the edges of the metal strip.

Abstract: A method and apparatus for measuring chatter marks on a metal workpiece. The method includes first removing gross buckle or curvature in the workpiece by clamping the same in the device having an elongated jaws and in a manner that locates a portion of the workpiece outside of the jaws so that an elongated portion of the workpiece is available for inspection by capacitive sensors. The sensors are located adjacent at least one surface of the elongated portion of the workpiece, the sensor and workpiece forming an electrical capacitor when appropriate potentials are applied to the sensor and workpiece. The sensors are now moved along the surface in the elongated direction of the workpiece to detect chatter marks on the surface.

Abstract: This invention relates to an apparatus and method for retaining the configuration of an aperture formed through a coil when the coil is supported on a saddle. The saddle has a pair of spaced apart upstanding legs. The apparatus includes a first and a second member, with the second member having a length sufficient to span the legs of the saddle. A pair of arms are pivotably attached to the first member and the arms are joined to the second member by a pair of links. The links enable the arms to move between a first position in which the arms are spaced inward and apart from the perimeter of the aperture when the second member is not in contact with the legs of the saddle and a second position in which the arms cooperate with the first member to support the weight of the coil when the second member is in contact with the legs of the saddle. The apparatus is particularly useful for supporting a coil during a heat treatment operation.

Abstract: This invention relates to an apparatus and method for retaining the configuration of an aperture formed through a coil when the coil is supported on a saddle. The saddle has a pair of spaced apart upstanding legs. The apparatus includes a first and a second member, with the second member having a length sufficient to span the legs of the saddle. A pair of arms are pivotably attached to the first member and the arms are joined to the second member by a pair of links. The links enable the arms to move between a first position in which the arms are spaced inward and apart from the perimeter of the aperture when the second member is not in contact with the legs of the saddle and a second position in which the arms cooperate with the first member to support the weight of the coil when the second member is in contact with the legs of the saddle. The apparatus is particularly useful for supporting a coil during a heat treatment operation.