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AssigneesTippins Incorporated, Ajax Magnethermic Corporation
InventorsGeorge W. Tippins, John E. Thomas, Nicholas V. Ross
Estimating the term…
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.
A method of isothermally rolling in multiple passes a metal strip product on a hot reversing mill comprising:
In a hot rolling process carried out on a hot rolling mill including at least one hot reversing stand having coiler units on opposite sides thereof, whereby product is converted to strip by passing said product back and forth through said stand in successive passes to reduce the thickness and coiling said product when it reaches a coilable thickness, the improvement comprising providing an induction heating unit between at least one of said coiler units and said hot reversing stand, sensing mill loads on the hot reversing stand, monitoring said sensed loads and comparing them to predetermined load differentials which are a function of rolling temperature and induction heating portions of said product in response to a predetermined condition of said comparison to maintain constant hot rolling temperatures throughout said product being rolled.
In a processing line including a hot rolling mill for converting slab product to strip, the improvement comprising a sensing unit for monitoring one of a slab product temperature condition and a rolling condition which is a function of temperature, a control unit for comparing said monitored conditions to a standard and at least one induction heating means and at least one cooling means located along the processing line approximate to the rolling mill and responsive to said control unit wherein rolling temperatures are maintained constant throughout any given pass through the rolling mill, wherein said rolling mill includes at least one hot reversing stand having coilers on opposite sides thereof and an induction heating unit positioned between at least one of said coilers and said hot reversing mill.
Dependencies are inferred from the claim text.