Tenova S.p.a.

Other

Techint Compagnia Tecnica Internazionale S.p.a.

Claudio Trevisan

Giovanni Boselli

Barbara Previtali

Paolo Gaboardi

Flavio Stefano Bianchessi

Giovanni Guido Maria Bavestrelli

Massimo Perassolo

Fausto Candiani

William Hill

Andrea Tognoni

Erasmo Trenti

Paul Schumacher

Thomas Andersson

Rick McWhirter

Massimo Cavallari

Andrea Gariano

Ali Gokhan Demir

Matteo Anzini

Paolo Pallotti

Rick Mcwhirter

A lamination cylinder includes a surface structure, on which a plurality of craters is defined having a different geometry and a random distribution. Some of the craters are partially superimposed with respect to each other.

Lamination cylinder

A machine for the surface treatment of a cylinder includes a first operative station for supporting the cylinder and for bringing it into rotation around its longitudinal axis, and at least a second operative station cooperating with the first station for generating and emitting, by means of an optical fiber apparatus, pulsed laser radiations randomly striking the surface of the cylinder and defining a desired roughness on the same surface; the second station being adjustably coupled with the first station in a first direction parallel with respect to the axis of the cylinder and carrying one or more pulsed laser radiation emitting heads, and slidingly assembled with respect to the cylinder in a second direction perpendicular to the axis of the cylinder.

Operating machine and relative method for the surface treatment of cylinders

A calibration device for gauges for the measurement of the geometrical characteristics of cylinders, such as the diameter, profile, rotundity and eccentricity errors, wherein such gauges include a pair of movable opposing arms equipped with feelers or sensors at their free ends, includes a pair of abutments reciprocally approachable and/or withdrawable by means of motors until a sample measure is obtained, as desired, within the measuring range of the gauge, on which the calibration device is assembled, revealed by means of measuring means cooperating with the abutments, such that consequently the feelers or sensors are respectively abutted or approached to the abutments to reveal the sample measure.

Calibration device for measurement gauges of the diameter and other geometrical characteristics of cylinders

A method for classification of defects and running of grinding of lamination cylinders includes identifying defect areas in a map illustrating a plurality of surface measurements of a cylinder. The method includes calculating, for each area identified, a plurality of parameters. The method includes identifying a type of defect associated with the areas identified, on the basis of the parameters calculated. The method includes determining an acceptability threshold of a specific defect for each type of defect identified. The method includes defining a corrective action for each area on the basis of a comparison between the acceptability threshold associated with the type of defect of the area, and a measurement of the surface measurements of the cylinder associated with the area. The method includes determining grinding parameters on the basis of the surface measurements of the cylinder, if the corrective action is a grinding operation to remove the defects.

Method for the classification of defects and running of lamination cylinder grinding

Measuring apparatus () of geometrical parameters of cylinders, rolls and similar elements (), used for the rolling of flat products operating on a machine for the grinding of said cylinders with an autonomous movement, i.e. with a movement independent of the translation movement of the grinding wheel or other parts, characterized in that it comprises at least four sensors (), situated on a surface orthogonal to the cylinder () or roll and in that at least two of said sensors are situated in opposite positions.

Independent measuring apparatus for grinding machines

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Cardano al Campo-Varese, Italy

Claudio Trevisan