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AssigneeSMS Siemag Aktiengesellschaft
InventorsJürgen Seidel, Olaf Norman Jepsen
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The invention relates to a method for calibrating a rolling stand (3), wherein in order to determine the relative pivot position of the roller set for setting a symmetrical roll gap and/or for determining the extension of the rolling stand (3) before the actual rolling process, the roller set is pressed against each other under a radial preset force and the resulting deformation of the rolling stand is preferably measured on the piston-cylinder unit (6, 7). The pivot position of the roller set and/or the frame module (M) determined based thereon are mathematically used during the subsequent rolling of a rolling stock between the working rollers (1, 2) for adjusting the roller set. In order to attain a higher accuracy during rolling, the invention provides for the working rollers (1, 2) to be axially adjustable relative to each other starting from a zero position that is not axially displaced, wherein the determination of the pivot position for setting a symmetrical roll gap and/or the determination of the frame module (M) are carried out in a relative displacement position of the working rollers (1, 2) that is not equal to the zero position (calibration position), wherein the determined pivot position and/or the value for the frame module (M) are stored and mathematically used for further calculating the pivot position and/or the adjustment of the roller set during rolling of the rolling stock.
A method of calibrating a roll stand, comprising the steps of determining the relative pivoted position of a roll set for adjustment of a symmetrical roll gap or for determining expansion of the roll stand before an actual rolling process of a rolling procedure, by pressing the roll set together with addition of a radial force, measuring a resulting deformation of the roll stand at a piston/cylinder unit, utilizing a resulting pivoted position of the roll set or a resulting stand modulus (M) for computation during later rolling of rolling stock between work rolls with adjustment of the roll set, wherein the work rolls, starting from a zero position which is not axially moved, are moveable axially relative to each other, the determination of the pivoted position for the adjustment of a symmetrical roll gap or the determination of the stand modulus (M) takes place in a relative displaced position of the work rolls which is different from the zero position (calibrating position), storing the determined pivoted position or the value for the stand modulus (M), and using the determined pivot position or the value of the stand modulus by computation for further calculation of the pivoting position or adjustment of the roll set during rolling of the rolling stock.
Dependencies are inferred from the claim text.