Abstract: A strip detecting apparatus comprising a plurality of measurement rings axially arranged around an outer circumference of a fixed shaft, characterized by a floating inner ring fitted to the fixed shaft via a load cell and an outer ring externally fitted to an outer circumference of the floating inner ring so as to rotate freely. A cell portion containing a strain gauge sealed with an inert gas in a load cell is arranged with a cooling means to detect a shape of a high-temperature strip.

Abstract: A method for controlling oxygen deposition on steel sheets. The oxygen deposition value of a steel sheet measured after decarburization annealing remains at a constant value by controlling, in the decarburization annealing line for the steel sheet, the electrolytic electricity density in electrolytic degreasing equipment included in the decarburization annealing line.

Abstract: A method of irradiating a continuously-running strip with energy beams. Scanning the width of continuously-running strip positions energy-beam irradiating devices along the width of the strip. Allocation of scanning regions along the width of the strip corresponding to respective energy-beam irradiating devices is determined. When an edge deviation or strip wind is detected by a strip-edge detector upstream of the energy-beam irradiating devices, the strip regions to be scanned are adjusted. If the amount of strip wind exceeds the limits of the scannable energy-beam irradiating devices, neighboring irradiating devices are re-oriented, all in response to upstream strip wind detection.

Abstract: An electron beam irradiating apparatus continuously irradiates a running metal strip with an electron beam. An electron beam source can deflect the electron beam. At least one standby target is provided to receive the electron beam from the electron beam gun in a standby period in which the metal strip is not intended to be irradiated.