Tippins Machinery Company, Inc.

Tippins Incorporated

Richard S Connolly

George W Tippins

John E Thomas

Wayne G Pottmeyer

Charles K Pine

A cold rolling mill and method for cold rolling is disclosed. The cold rolling mill includes at least two tandem four-high reversing mills with at least one tension reel on each side of the tandem mills. Bridle roll units may be positioned on each side of the tandem, reversing mills to allow the cold rolling mill to be utilized as a temper mill.

Twin stand cold reversing mill

A method and plant for casting and rolling strip and/or sheet in line. The method comprises continuously casting slabs less than about 1.5 inches thick which naturally have a columnar grain structure. The method further comprises passing the slabs directly onto an insulated run-out table for maintaining temperature and minimizing heat loss from the slabs and permitting equalization of temperature within the slabs. The method also comprises passing the slabs directly to a hot reversing mill having upstream and downstream coiling furnaces such that the slabs first pass the reversing mill and are subject to an initial reduction in thickness sufficient to break up the columnar structure prior to being coiled as strips in the downstream coiling furnace and passing the strips back and forth to produce sheet or strip having an equiaxed grain structure.

Method of continuous casting and rolling strip

A method of underwinding strip on a drum along the passline of a hot reversing mill comprises positioning the drum in a receiving mode, passing the strip through the mill at a given thread speed, detecting the presence of the strip at a given position in relation to the drum, activating the drum in an underwinding direction at a given time delay representative of a distance in which the strip is through the drum slot and internal of the drum, and speed matching the drum and the strip in an initial surface winding mode and a subsequent center driven tension mode. The apparatus includes a pair of drums, each positioned on an opposite side of the hot reversing mill, a pair of gates, each positioned along the table rolls to deflect the strip into the drum slots, a tilt table roll assembly on each side of the mill adapted to pivot into engagement with the drum downstream of the slot to retain the strip against a portion of the drum, detection means positioned between the drum and the mill to detect the presence of the strip, activation means for causing each drum to rotate in an underwinding direction when the strip enters the slot, and to speed match each drum to the strip, and a converting means for converting each drum from a surface winding mode to a center driven tension mode after a given number of wraps.

Method and apparatus for underwinding strip on a drum

A method of underwinding strip on a drum along the passline of a hot reversing mill comprises positioning the drum in a receiving mode, passing the strip through the mill at a given thread speed, detecting the presence of the strip at a given position in relation to the drum, activating the drum in an underwinding direction at a given time delay representative of a distance in which the strip is through the drum slot and internal of the drum, and speed matching the drum and the strip in an initial surface winding mode and a subsequent center driven tension mode. The apparatus includes a pair of drums, each positioned on an opposite side of the hot reversing mill, a pair of gates, each positioned along the table rolls to deflect the strip into the drum slots, a tilt table roll assembly on each side of the mill adapted to pivot into engagement with the drum downstream of the slot to retain the strip against a portion of the drum, a detector positioned between the drum and the mill to detect the presence of the strip, an activator for causing each drum to rotate in an underwinding direction when the strip enters the slot, and to speed match each drum to the strip, and a converting member for converting each drum from a surface winding mode to a center driven tension mode after a given number of wraps.

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Pittsburgh, PA, United States of America

Richard S Connolly