Control apparatus and method for a hot rolling mill
AssigneeKabushiki Kaisha Toshiba
InventorHiroyuki Imanari
Life of this patent
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Abstract
A control apparatus for a hot rolling mill having a plurality of rolling stands, including a roll gap tension controller configured to control a roll gap of one of the rolling stands so that a detected interstand tension value of a rolled material positioned between the adjacent rolling stands accords with a target interstand tension value thereof; and a tension width controller configured to control a width of the rolled material by correcting the target interstand tension value.
Claims17
A control apparatus for a hot rolling mill having a plurality of rolling stands, comprising:
- a roll gap tension controller configured to control a roll gap of one of said rolling stands so that a detected interstand tension value of a rolled material positioned between adjacent rolling stands of said plurality of rolling stands accords with a target interstand tension value thereof;
- and
- a tension width controller configured to control a width of said rolled material by correcting said target interstand tension.
A method of controlling a hot rolling mill having a plurality of rolling stands which prepares a rolled material having a desired width, said method comprising the steps of:
- controlling a roll gap of one of said rolling stands so that a detected interstand tension value of a rolled material positioned between adjacent rolling stands accords with a target interstand tension value thereof;
- and
- controlling a width of said rolled material by correcting said target interstand tension value.
A control apparatus for a hot rolling mill having a plurality of rolling stands, comprising:
- a setter to set a target interstand tension value;
- a tension width controller configured to control a width of a rolled material by correcting the target interstand tension value, wherein the tension width controller generates a tension command value based on a first detected width and a second detected width;
- a roll gap tension controller to receive the tension command value and to generate a roll gap command value;
- and
- a first roll gap controller in communication with a first of said plurality of stands to receive the roll gap command value, wherein the roll gap tension controller is configured to control a roll gap of the first of said rolling stands so that a detected interstand tension value of a rolled material positioned between the first rolling stand and an adjacent rolling stand accords with a target interstand tension value.
Dependencies are inferred from the claim text.