An installation for rolling a metal strip includes a rolling mill through which the strip is rolled as it passes continuously, rolling agents brought into contact with rolls of the rolling mill and with the strip, a strip drawing unit positioned at the outlet of the rolling mill, and a decontamination module with at least one degreaser positioned between the outlet of the rolling mill and the drawing unit so as to remove residual rolling agents from the strip at the outlet from the rolling mill. A strip accumulator is positioned at the outlet of at least part of the drawing unit, particularly so as to keep the speed of travel of the strip at the outlet of the accumulator below a maximum threshold. A paper-strip insertion module is positioned downstream of the outlet from the strip accumulator.

A plurality of flat metal items to be rolled (3) are fed to a plurality of rolling stands (1, 2) of a rolling installation, one after the other over a feed path (4). The items (3) are rolled by the rolling stands (1, 2) past which they are fed. In the rolling stands (1, 2), the flat item to be rolled (3) is first rough-rolled in at least one roughing pass with a wedge-type roll gap adjustment (ds) and then finish-rolled in finishing passes. After the finish-rolling of the flat item, a thickness taper (dd) that is present in the respective finish-rolled flat item is recorded by measuring instruments. The thickness taper (dd) is compared with a target taper (dZ). On the basis of a deviation of the thickness taper (dd) from the target taper (dZ) and the wedge-type roll gap adjustment (ds), a new wedge-type roll gap adjustment (ds) is determined for the at least one roughing pass. The wedge-type roll gap adjustment (ds) for the at least one roughing pass for the next flat item to be rolled (3) is set to correspond to the newly determined value of the wedge-type roll gap adjustment (ds), so that the next flat item to be rolled (3) is rough-rolled in the at least one roughing pass with the newly determined value of the wedge-type roll gap adjustment (ds).

According to one aspect, a tubular structure may include a base and a wrap. The base may have a first surface and second surface opposite one another, the first surface defining an elongate cavity, and the base having a tubular shape defining a longitudinal axis extending along the elongate cavity. The wrap may be supported on the second surface of the base, the wrap including a plurality of layers, and each layer having a first longitudinal edge and a second longitudinal edge coupled to one another along a respective spiral seam associated with the given layer and extending about the longitudinal axis of the base.

According to one aspect, a tubular structure may include a base and a wrap. The base may have a first surface and second surface opposite one another, the first surface defining an elongate cavity, and the base having a tubular shape defining a longitudinal axis extending along the elongate cavity. The wrap may be supported on the second surface of the base, the wrap including a plurality of layers, and each layer having a first longitudinal edge and a second longitudinal edge coupled to one another along a respective spiral seam associated with the given layer and extending about the longitudinal axis of the base.

The invention relates to a method for manufacturing strips of stainless steel, comprising hot rolling in an initial process (A) and subsequently cold rolling in a cold rolling line (B). The hot rolling is stopped when the strip thickness has been reduced to a thickness between 2.0 mm and 6.5 mm. The subsequent cold rolling is passed at least one time through said cold rolling line, which comprises in the following order: At least one cold rolling mill (11-13) in the initial part of the line, at least one annealing section (17), a scale breaking step (21), a shot blasting step (23) and at least one pickling section (26, 27) utilizing a mixture of nitric acid HNO.sub.3, hydrofluoric acid HF and optionally sulphuric acid H.sub.2SO.sub.4.

The invention relates to a method for manufacturing strips of stainless steel, comprising hot rolling in an initial process (A) and subsequently cold rolling in a cold rolling line (B). The hot rolling is stopped when the strip thickness has been reduced to a thickness between 2.0 mm and 6.5 mm. The subsequent cold rolling is passed at least one time through said cold rolling line, which comprises in the following order: At least one cold rolling mill (11-13) in the initial part of the line, at least one annealing section (17), a scale breaking step (21), a shot blasting step (23) and at least one pickling section (26, 27) utilizing a mixture of nitric acid HNO.sub.3, hydrofluoric acid HF and optionally sulphuric acid H.sub.2SO.sub.4.

A method of detecting chattering in a cold rolling mill, the method includes: a step of predicting occurrence of chattering during rolling of a material to be rolled, by inputting second multidimensional data to a prediction model, the second multidimensional data having been generated based on condition data corresponding to array data related to the material to be rolled, and the prediction model having been trained with an explanatory variable and an objective variable, the explanatory variable being first multidimensional data generated based on one-dimensional array data representing a past rolling record of rolling of rolled materials by means of a cold rolling mill, and the objective variable being a past record of occurrence of chattering corresponding to the past rolling record.

A method of detecting chattering in a cold rolling mill, the method includes: a step of predicting occurrence of chattering during rolling of a material to be rolled, by inputting second multidimensional data to a prediction model, the second multidimensional data having been generated based on condition data corresponding to array data related to the material to be rolled, and the prediction model having been trained with an explanatory variable and an objective variable, the explanatory variable being first multidimensional data generated based on one-dimensional array data representing a past rolling record of rolling of rolled materials by means of a cold rolling mill, and the objective variable being a past record of occurrence of chattering corresponding to the past rolling record.

Provided is an induction heating device for a metal plate including: a first conductor member that faces at least one of a front surface or a back surface of the metal plate and that is disposed across the metal plate in a width direction; a second conductor member that is separated from the first conductor member by a first distance in a plate passing direction of the metal plate, that faces at least one of the front surface or the back surface of the metal plate, and that is disposed across the metal plate in the width direction; connecting members that connect the first conductor member and the second conductor member to each other at positions separated from width-directional end portions of the metal plate to form a primary closed circuit; and an AC power supply connected to the primary closed circuit, in which the first distance is larger than a sum of dimensions of the first conductor member and the second conductor member in the plate passing direction of the metal plate.

Provided is an induction heating device for a metal plate including: a first conductor member that faces at least one of a front surface or a back surface of the metal plate and that is disposed across the metal plate in a width direction; a second conductor member that is separated from the first conductor member by a first distance in a plate passing direction of the metal plate, that faces at least one of the front surface or the back surface of the metal plate, and that is disposed across the metal plate in the width direction; connecting members that connect the first conductor member and the second conductor member to each other at positions separated from width-directional end portions of the metal plate to form a primary closed circuit; and an AC power supply connected to the primary closed circuit, in which the first distance is larger than a sum of dimensions of the first conductor member and the second conductor member in the plate passing direction of the metal plate.