Patent ID: 11938528
Assignee: SMS GROUP GMBH
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 9:
10. The method according to claim 1,
wherein the center flatness of the metal strip can be determined after a pass with one of the following options:
a) evaluation of the parabolic component of the calculated strip elongation ΔL/L over a width of the metal strip;
b) as with a), but with a stronger weighting of the strip elongations in the middle area of the metal strip than in the area of the edge of the metal strip;
c) evaluation of the difference between relative profile values of the metal strip after passes i and i−1, in each case at a fixed/same reference point a>X further inwards from the edge of the metal strip in a width direction;
d) arithmetic averaging of the calculated strip elongation ΔL/L from different calculation points over a defined width range, preferably over the middle width range;
e) evaluation of the difference between the calculated relative profile values of the metal strip after passes i and i−1, in each case at a variable reference point with a>X further inwards from the edge of the metal strip in the width direction, wherein a is selected as a function of a strip width, a thickness of the metal strip and a material quality.