Method for producing a metal strip and device for reducing the risk of such a strip breaking

A device for reducing the risk of a strip breaking in an installation comprising a feed system for a metal strip (1) and a treatment system (4), in which the strip (1) is held under stress, which device comprises, in the feed system, a detector (8) for detecting defects in the edges of the moving strip, wherein a system (12) is also provided for forming at least one notch in the strip in the strip direction, which system furthermore comprises control means which can be used to control the location, depth and length of the notch on the basis of signals transmitted by the detector (8).

A device for producing a metal strip which reduces the risk of the strip breaking over the course of a path, the strip being conveyed under stress in the strip direction and in which, in an upstream feed path of the metal strip, defects in the edges of the strip are detected and then measures are taken to reduce the risk of these defects causing the strip to break, wherein the strip is provided, in the region of a detected defect, with at least one notch in the strip direction, at a distance which is further away from the edge of the strip than the maximum dimension of the defect transversely with respect to the strip direction, comprising:

• a feed system for the metal strip (1), wherein the feed system comprises, a detector (8) for detecting defects in the edges of the moving strip,
• a treatment system (4) in which the strip (1) is held under stress, and
• a cutter system (12) for forming at least one notch in the strip in the strip direction is located downstream of the detector in the strip direction, the system comprising control means capable of controlling the location, depth and length of the notch on the basis of signals transmitted by the detector.