Device and method for the hot measuring, during rolling, of a size of metal profiles
AssigneeDanieli Automation S.P.A.
InventorsAlessandro Ardesi, Antonello Mordeglia
Life of this patent
Estimating the term…
Abstract
A device for the hot measuring, during rolling, of a transverse size of a metal profile (12) includes a transmission element with at least two sections distinct and spatially separated from each other and disposed along a nominal axis of feed of the metal profile, configured to generate an electromagnetic field with a desired profile of force lines, and a reception element disposed along the nominal axis in a position comprised in the overall longitudinal bulk of the transmission element (14) and configured to detect a signal relating to the variations of the electromagnetic field due to the passage of the metal profile.
Claims13
A device for the hot measuring, during rolling, of a transverse size of a metal profile, comprising:
- a transmission element with at least two sections distinct and spatially separated from each other, disposed along a nominal axis of feed of the metal profile, and operating on a same nominal measurement of transverse size of the metal profile, said transmission element being configured to generate an electromagnetic field with a desired profile of force lines, and a reception element disposed along said nominal axis in a position comprised in an overall longitudinal measurement of said transmission element along said nominal axis and configured to detect a signal relating to variations of said electromagnetic field due to passage of said metal profile, wherein the two sections of the transmission element and also the reception element have a section shape defining a transit hole of a larger size than a diameter of the metal profile on which the hot measuring measurement is performed, and inside which the metal profile is made to transit, and wherein said transmission element and said reception element each include a coil with an extension along the nominal axis, said coils being of a cylindrical shape, and defining said transit hole.
A method for the hot measuring, during rolling, of a transverse size of a metal profile comprising:
- generating an electromagnetic field with a desired profile of force lines using a transmission element with at least two sections distinct and spatially separated from each other and disposed along a nominal axis of feed of the metal profile, and operating on a same nominal measurement of transverse size of the metal profile;
- detecting a signal relating to the variations of said electromagnetic field due to the passage of said metal profile by means of a reception element disposed along said nominal axis in a position comprised in an overall longitudinal measurement of said transmission element along said nominal axis, wherein both of the two sections of the transmission element and also the reception element have a section shape defining a transit hole of a larger size than a diameter of the metal profile on which the measurement is performed, and inside which the metal profile is made to transit, and wherein said transmission element and said reception element each include consist of a coil with an extension along the nominal axis, said coils being of a cylindrical shape and defining said transit hole;
- sending said signal to a control and command unit;
- implementing using the control and command unit a calculus algorithm to obtain a measurement of at least one of an external diameter or an average thickness of said metal profile subjected to measurement on the basis of a power current of said transmission element and of the signal received.
Dependencies are inferred from the claim text.