Tippins Incorporated

Tippins Machinery Company, Inc.

Ajax Magnethermic Corporation

George W Tippins

John E Thomas

Ronald D Gretz

Vladimir B Ginzburg

Wayne G Pottmeyer

William H Tippins

Richard S Connolly

Charles K Pine

Nicholas V Ross

Lawrence P Dunn

Method and apparatus for rolling strip or plate

The present invention provides a hot reversing rolling mill for isothermally reducing a metal strip product. The mill includes a hot reversing mill stand with a pair of coilers positioned on opposite sides of the mill stand. At least one heater is positioned between one of the coilers and the mill stand with at least one strip cooling unit positioned between one of the coilers and the mill stand. A sensor is provided for sensing a strip parameter indicative of strip temperature as well as a controller for controlling each of the heating and cooling units in response to the sensed parameter. The rolling mill of the present invention can be utilized for isothermally rolling multiple passes of a metal strip product on the hot reversing mill.

Method and apparatus for isothermally rolling strip product

A method of hot rolling steel slabs of thin to standard thickness into hot mill band is carried out on a hot reversing mill having a coiler furnace upstream and downstream of the reversing mill. A twin stand hot reversing mill is used and the slab is introduced into the first stand of the mill without any breakdown pass. Flat passes of the slab back and forth through the first stand and the second stand occur to form an intermediate product having a thickness capable of being coiled. Thereafter, the intermediate product is coiled on one of the upstream or downstream drums. The product is then passed back and forth between the first and second stand in tandem. An edging stand is positioned between the reversing stands to edge the product during the flat passes. The final product is removed from the hot mill band in one of sheet, plate or coil form.

Method of rolling hot mill band on a twin stand reversing mill

A method of processing large slabs into memory free strip or plate comprises the steps of: rolling the large slabs into strip or plate on a rolling mill with a finishing temperature above 1340.degree. F.; in-line cooling the strip or plate to a temperature in the range 900.degree. F. to 650.degree. F. with the strip or plate laid out on a flat cooling conveyor; slowing the speed of the strip or plate to speeds typical of cut-to-length lines; side trimming and/or cutting the strip or plate to lengths at temperatures above 500.degree. F.; cooling the strip or plate to a temperature below 300.degree. F.; and stacking the strip or plate.

Induction heating in a hot reversing mill for isothermally rolling strip

The invention provides a method for rolling hot mill band on a hot reversing mill so as to achieve acceptable finishing temperatures for such a light gauge product. The invention also minimizes the threading of a light gauge product through the mill and decreases the likelihood of cobbles along the runout table.

Method of rolling light gauge hot mill band on a hot reversing mill

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus is an intermediate thickness slab caster with a slab storage container and inline hot strip and plate line. The apparatus includes a continuous strip caster forming a strand of between 3.5 and 6 inches thick; a cutoff for cutting the strand into a slab of desired length; a slab table; a slab storage container adjacent to the slab conveyor table adapted to selectively receive slabs from the slab conveyor table; a reheat furnace having an entry inline with both the slab conveyor table and the slab collection and storage area for receiving slabs from either; a feed and run back table at the exit of the reheat furnace; a hot reversing mill for reducing the slab to a coiling thickness; a pair of coiler furnaces located on opposite sides of the hot reversing mill; and a finishing line downstream of the pair of coiler furnaces.

Slab container

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate is shown. The apparatus is an intermediate thickness slab caster and inline hot strip and plate line. The apparatus includes a continuous strip caster forming an intermediate thickness strand; a torch or shear cutoff for cutting the strand into a slab of desired length; a feed and run back table including a slab takeoff operable transverse of the table; a slab collection and storage area adapted to receive slabs from the slab takeoff; a reheat furnace receiving slabs from both the slab takeoff and the slab collection and storage area, with the exit of the reheat furnace at the feed and run back table; a single or twin stand hot reversing mill for reducing the slab to a thickness of 1 inch or less in no more than three flat passes; a pair of coiler furnaces located on opposite sides of the hot reversing mill; and a final processing line downstream of the pair of coiler furnaces.

Intermediate thickness slab caster and inline hot strip and plate line

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus is a slab caster and inline surface conditioner, hot strip and plate line. The apparatus includes a continuous strip caster forming a strand; a cutoff for cutting the strand into a slab of desired length; a slab conveyor table; a slab conditioning device inline with the slab conveyor table adapted to selectively receive slabs therefrom; a reheat furnace having an entry inline with the slab conveyor table; a feed and run back table at the exit of the reheat furnace; a single or twin stand hot reversing mill for reducing the slab to a coiling thickness; and a pair of coiler furnaces located on opposite sides of the hot reversing mill.

Method of steel processing using an inline grinder

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus includes a continuous strip caster forming a strand of intermediate thickness; a shear for cutting the strand into a slab of desired length; a slab table including a slab takeoff operable transverse of the conveyor table; a slab collection and storage area adjacent to the slab conveyor table adapted to receive slabs from the slab takeoff; one or two reheat furnaces having an entry inline with both the slab conveyor table and the slab collection and storage area for receiving slabs from either; a feed and run back table at the exit of one reheat furnace; a single or twin stand hot reversing mill for reducing the slab to a coiling thickness in a number of flat passes; and a pair of coiler furnaces located on opposite sides of the hot reversing mill.

Intermediate thickness and multiple furnace process line

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus is an intermediate thickness slab caster and inline hot strip and plate line. The apparatus includes a continuous strip caster selectively forming a single or a pair of parallel strands of between 3.5 inches (8.9 cm) and 5.5 inches (14 cm) thick, preferably 5 inches (12.7 cm); a shear for cutting each strand into a slab of desired length; a slab table including a slab takeoff operable transverse of the conveyor table; a slab collection and storage area adjacent to the slab conveyor table adapted to receive slab from the slab takeoff; a reheat furnace having an entry inline with both the slab conveyor table and the slab collection and storage area for receiving slabs from either; a feed and run back table at the exit of the reheat furnace; a pair of tandem hot reversing mills for reducing the slab to a coiling thickness in a minimum number of flat passes; a pair of coiler furnaces located on opposite sides of the tandem hot reversing mills; and a finishing line downstream of the pair of coiler furnaces.

Intermediate thickness twin slab caster and inline hot strip and plate

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus is an intermediate thickness slab caster and inline hot strip and plate line. The apparatus includes a continuous strip caster forming a strand of between about 3.5 and 5.5 inches thick; a shear for cutting the strand into a slab of desired length; a slab table including a slab takeoff operable transverse of the conveyor table; a slab collection and storage area adjacent to the slab conveyor table adapted to receive slab from the slab takeoff; a reheat furnace having an entry inline with both the slab conveyor table and the slab collection and storage area for receiving slabs from either; a feed and run back table at the exit of the reheat furnace; a hot reversing mill for reducing the slab to a thickness sufficient for coiling in a minimum number of flat passes; a pair of coiler furnaces located on opposite sides of the hot reversing mill; and a finishing line downstream of the pair of coiler furnaces.

Method and apparatus for intermediate thickness slab caster and inline

A method and apparatus of making coiled plate, sheet in coiled form or discrete plate. The apparatus is an intermediate thickness slab caster and inline hot strip and plate line. The apparatus includes a continuous strip caster forming a strand of between 3.5 and 5.5 inches thick; a shear for cutting the strand into a slab of desired length; a slab table including a slab takeoff operable transverse of the conveyor table; a slab collection and storage area adjacent to the slab conveyor table adapted to receive slab from the slab takeoff; a reheat furnace having an entry inline with both the slab conveyor table and the slab collection and storage area for receiving slabs from either; a feed and run back table at the exit of the reheat furnace; a hot reversing mill for reducing the slab to a thickness of 1 inch or less in no more than three flat passes; a pair of coiler furnaces located on opposite sides of the hot reversing mill; and a finishing line downstream of the pair of coiler furnaces.

The method of controlling strip flatness on a hot strip mill which includes a hot reversing mill as a final reducing stand comprises reducing the thickness of the workpiece by passing it back and forth along a pass line through the hot reversing mill while reducing the roll gap on the mill after each successive pass. The strain developed during rolling is equalized by passing the workpiece through a shape processor having a plurality of upper and lower rolls capable of intermeshing along the pass line and located immediately downstream of the hot reversing mill. The equalizing of the strain through the shape processor occurs during selected intermittent passes and/or through the last pass through the reversing mill.

Hot strip mill shape processor and method

A method of improving the productivity and yield of a reversing plate mill comprises installing coiler furnaces on the upstream and downstream sides of the mill. Thereafter, a supply of extra large slabs as well as a supply of pattern slabs for the mill are provided. The plate requirements for the next horizon period are analyzed and for each size plate, a decision is made (i) to process extra large size slabs, or (ii) to process pattern slabs, or (iii) a combination of both extra large and pattern slabs to supply the plate requirements. The slabs are then processed in accordance with the particular decision.

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Pittsburgh, PA, United States of America

George W Tippins