Method for adjusting a state of a rolling stock, particularly a near-net strip
View Patent ↗In a method and a control device for adjusting a state of a rolling stock, particularly a near-net strip, defined at least by an out-of-parallel condition and/or a curvature of the rolling stock, the rolling stock is transitioned from an initial into an intermediate state by a roll stand and by impressing a stress onto the rolling stock by an additional processing device, and the rolling stock is transitioned from the intermediate into a final state by at least one processing aggregate. By determining whether rolling stock should be fed into the at least one processing aggregate, the intermediate state requiring a non-zero out-of-parallel condition and/or curvature in order to achieve a predetermined final state, and the roll stand and/or the processing device are controlled and/or regulated as a function thereof to adjust the required intermediate state, the shape reliability of an ultimately parallel, non-curved rolling stock can be increased.
1. A method for processing a rolling stock by a rolling stand and at least one subsequent processing unit, the method comprising the steps of:
determining by a regulating device a non-zero influence on a geometry of the rolling stock that is associated with the at least one subsequent processing unit, the influence on the geometry including at least one of a influence on a thickness taper and a camber of the rolling stock,
determining by the regulating device an intermediate geometry of the rolling stock to be output by the rolling stand such that the determined influence on the geometry associated with the at least one subsequent processing unit will provide a desired final geometry of the rolling stock after processing by the at least one subsequent processing unit, the intermediate geometry having at least one of a non-zero thickness taper and a non-zero camber,
controlling the roll stand to transform the rolling stock from an initial state having an initial geometry into an intermediate state having the determined intermediate geometry, and
using the at least one subsequent processing unit to transform the rolling stock from the intermediate state having the intermediate geometry to a final state having the desired final geometry.
2. The method according to claim 1 , further comprising the regulating device determining an influence on an internal material stressing of the rolling stock that is associated with the at least one subsequent processing unit.
3. The method according to claim 1 , wherein the rolling stock has a head that is generally aligned transversely with an intended transporting direction , wherein a position of the head of the rolling stock is recorded, and wherein a force exerted on the rolling stock is controlled based on the recorded position of the head of the rolling stock.
4. The method according to claim 1 , wherein the rolling stand comprises a lateral guide.
5. The method according to claim 1 , wherein the rolling stand comprises an edger.
6. The method according to claim 5 , wherein the edger comprises working rolls that are not arranged axially symmetrically in relation to a center longitudinal axis of the rolling stock.
7. The method according to claim 1 , wherein the at least one processing unit following the roll stand comprises a horizontal roll stand.
8. The method according to claim 1 , wherein the rolling stock is a near-net strip.
9. The method according to claim 1 , wherein the roll stand is a roughing stand.
10. A controlling or regulating device for processing of a rolling stock by a rolling stand and at least one subsequent processing unit, comprising:
non-transitory storage means storing a machine-readable program code, which contains instructions executable by a processor to:
determine a non-zero influence on the geometry of the rolling stock that is associated with the at least one subsequent processing unit, the influence on the geometry including at least one of a influence on a thickness taper and a camber of the rolling stock,
determine an intermediate geometry of the rolling stock to be output by the rolling stand such that the determined influence on the geometry associated with the at least one subsequent processing unit will provide a desired final geometry of the rolling stock after processing by the at least one subsequent processing unit, the intermediate geometry having at least one of a non-zero thickness taper and a non-zero camber,
control the roll stand to transform the rolling stock from an initial state having an initial geometry into an intermediate state having the determined intermediate geometry, and
control the at least one subsequent processing unit to transform the rolling stock from the intermediate state having the intermediate geometry to a final state having the desired final geometry.
11. The controlling or regulating device according to claim 10 , wherein the device is further operable to determine an influence on an internal material stressing of the rolling stock that is associated with the at least one subsequent processing unit.
12. The controlling or regulating device according to claim 10 , wherein the rolling stock has a head that is generally aligned transversely with an intended transporting direction, wherein a position of the head of the rolling stock is recorded, and wherein a force exerted on the rolling stock is controlled based on the recorded position of the head of the rolling stock.
13. The controlling or regulating device according to claim 10 , wherein the rolling stand comprises a lateral guide.