Abstract: Method for managing the metal charge in a melting furnace includes at least a step of depositing metal materials to be melted in a storage zone, a step of picking up and loading the metal materials from the storage zone onto feeding device by loading device, and a feed step in which the feeding device feeds the materials toward the melting furnace. The deposit step provides to divide the storage zone into a plurality of specialized areas in each of which a differentiated type of the metal materials is deposited, and during the pick-up and loading step, a processing device controls and commands the actuation of the feeding device which picks up the types of materials from the specialized areas and load them onto the feeding device according to a desired modality and quantity.

Abstract: A method controls the section sizes of a rolled product in a segment of a rolling line between at least two rolling stands, wherein each is provided with its own drive members, in which at least a detector located between the two rolling stands detects a characteristic size of the rolled product. A control unit compares the characteristic size of the rolled product with a reference size and acts on said drive members in order to hold the rolled product in an optimal drawing condition. The method includes setting a predefined value of an electric quantity of at least one of the drive members, measuring the reference size, and verifying the characteristic size of the rolled product in transit. If a deviation is detected between the characteristic size and the reference size, returning the characteristic size of the rolled product to the reference size.

Abstract: Apparatus to detect a deformity in thickness of a tubular element. The apparatus comprises a plurality of sensors and is installed in at least a rolling stand, having at least three rolling rings, of a rolling train able to obtain said tubular element.

Abstract: Device for measuring speed of oblong products moving along feed direction and emitting radiations, in particular rolled metal products in rolling line, including two radiation sensors, disposed reciprocally at close distance respectively defining an optical observation window, at pre-arranged distance from each other. Each window covers the image of an advancing product determinate portion equal to relative window width, irrespective of portion's movements transverse to feed direction. Sensors observe the presented product portion, on each occasion, in correspondence with associated windows consecutively along feed direction, and measure continuously intensity of radiation from the product portion in correspondence with the windows.

Abstract: Apparatus to detect a deformity in thickness of a tubular element. The apparatus comprises a plurality of sensors and is installed in at least a rolling stand, having at least three rolling rings, of a rolling train able to obtain said tubular element.

Abstract: Device to control the feed of the metal charge in an electric arc furnace, comprising a conveyor associated at the end to a feed mouth provided in said electric arc furnace and, in cooperation with the conveyor, at least a system to detect the point-by-point profile of the metal charge present on the conveyor.

Abstract: Method for managing the metal charge in a melting furnace comprising at least a step of depositing metal materials to be melted in a storage zone, a step of picking up and loading the metal materials from the storage zone onto feed means by means of loading means, and a feed step in which the feed means feed the materials toward the melting furnace. The deposit step provides to divide the storage zone into a plurality of specialized areas in each of which a differentiated type of the metal materials is deposited, and during the pick-up and loading step, a processing device controls and commands the actuation of the loading means which pick up the types of materials from the specialized areas and load them onto the feed means according to a desired modality and quantity.

Abstract: A plant to control the section of a rolled product passing through a rolling train comprises at least two rolling stands, at least a section area measurer disposed immediately at exit from at least one of the stands located downstream of the first stand, a control unit comprising a database, in which at least the parameters relating to the expected value of the section of the rolled product at exit from each stand are memorized, means to compare the values detected by the section area measurer with the values memorized in the database and means to act on the rolling parameters according to said values detected.

Abstract: A method is provided to control the feed of a metal charge into an electric arc furnace having at least one electrode to generate an electric arc to melt metals. The method includes: a step of defining a “cover index CI” of the electric arc by the slag present above the liquid metal bath, in order to calculate which of the harmonics present in an electric feed quantity of the furnace are taken into consideration; a step of measuring the actual cover index CI value during a functioning cycle of the furnace; and a step of adjusting the speed of feed of the metal charge into the furnace based on the measured value of the cover index CI.

Abstract: A device to analyze and determine the movement characteristics of products moving in a determinate direction of feed (F) and emitting radiations, in particular products exiting from a casting line, comprises a camera to continuously acquire images of the product moving in the direction of feed (F) in at least two successive instants of time, and an electronic processing unit by means of which the comparison between at least two successive images acquired is carried out, using mathematical algorithms based on the image correlation principle, in order to determine the spatial displacement of the images and then the movement characteristics of the product moving in the direction of feed (F) are analyzed and determined.

Abstract: A method to cover the exposures of a bath of molten steel by elements of casting powder in an ingot mold of a plant for the continuous casting of steel, including a step of subdividing the ingot mold into a desired number of zones, with each of which a covering movement is associated, the zones being determined and identified in a manner coordinated with the position of the snorkel and of the edge of the ingot mold, and a step of automated execution of one or more covering movements by elements of which the casting powder is distributed in a selected one of the zones, which movements, repeated in sequence according to a desired program, are selected from a group including pouring movements and throwing movements, at least on the basis of the reciprocal position of each of the zones and the snorkel.

Abstract: A method controls the section sizes of a rolled product in a segment of a rolling line between at least two rolling stands, wherein each is provided with its own drive members, in which at least a detector located between the two rolling stands detects a characteristic size of the rolled product. A control unit compares the characteristic size of the rolled product with a reference size and acts on said drive members in order to hold the rolled product in an optimal drawing condition. The method comprises setting a predefined value of an electric quantity of at least one of the drive members, measuring the reference size, and verifying the characteristic size of the rolled product in transit. If a deviation is detected between the characteristic size and the reference size, returning the characteristic size of the rolled product to the reference size.

Abstract: Device for measuring speed of oblong products moving along feed direction and emitting radiations, in particular rolled metal products in rolling line, including two radiation sensors, disposed reciprocally at close distance respectively defining an optical observation window, at pre-arranged distance from each other. Each window covers the image of an advancing product determinate portion equal to relative window width, irrespective of portion's movements transverse to feed direction. Sensors observe the presented product portion, on each occasion, in correspondence with associated windows consecutively along feed direction, and measure continuously intensity of radiation from the product portion in correspondence with the windows.

Abstract: A method to cover the exposures of a bath of molten steel by elements of casting powder in an ingot mold of a plant for the continuous casting of steel, including a step of subdividing the ingot mold into a desired number of zones, with each of which a covering movement is associated, the zones being determined and identified in a manner coordinated with the position of the snorkel and of the edge of the ingot mold, and a step of automated execution of one or more covering movements by elements of which the casting powder is distributed in a selected one of the zones, which movements, repeated in sequence according to a desired program, are selected from a group including pouring movements and throwing movements, at least on the basis of the reciprocal position of each of the zones and the snorkel.

Abstract: A device to analyze and determine the movement characteristics of products moving in a determinate direction of feed (F) and emitting radiations, in particular products exiting from a casting line, comprises a camera to continuously acquire images of the product moving in the direction of feed (F) in at least two successive instants of time, and an electronic processing unit by means of which the comparison between at least two successive images acquired is carried out, using mathematical algorithms based on the image correlation principle, in order to determine the spatial displacement of the images and then the movement characteristics of the product moving in the direction of feed (F) are analyzed and determined.

Abstract: A method is provided to control the feed of a metal charge into an electric arc furnace having at least one electrode to generate an electric arc to melt metals. The method includes: a step of defining a “cover index CI” of the electric arc by the slag present above the liquid metal bath, in order to calculate which of the harmonics present in an electric feed quantity of the furnace are taken into consideration; a step of measuring the actual cover index CI value during a functioning cycle of the furnace; and a step of adjusting the speed of feed of the metal charge into the furnace based on the measured value of the cover index CI.

Abstract: Device and method to measure the gap between substantially static elements with a variable reciprocal position, used to adjust the reciprocal position of said elements to obtain a desired transit gap, comprising visual recording means connected to a processor equipped with at least display means, said processor being suitable to receive the images filmed by said visual recording means and to automatically compare said images with at least a pre-selected sample mask substantially reproducing the desired gap to be obtained, said processor being suitable to display, in numerical form on appropriate interface windows, the dimensional discrepancies between the image relating to the actual transit gap defined by said elements as filmed by said means, and said pre-selected sample mask.

Abstract: Method to measure the variations in section of a hot rolled bar (12) as it is fed, the method including the generation of a variable frequency magnetic field by at least a generator device (14) defining an inner space (214) for the transit of the bar (12), the variations in section of the bar (12) in transit being measured by a receiver device (15) suitable to monitor the perturbations induced on the magnetic field by the variations in the area of section of the bar (12) in transit. The receiver device (15) is arranged coaxial and inside the generator device (14) and defines inside the same a surface for the transit of the bar. The (12) has a transverse section of (A.sub.S "), and the value ("f.sub.0 ") of the frequency of the magnetic field generated by the generator device (14) is suitable to minimize the influence of the real temperature of the bar (12) on the measurement.

Abstract: Controlled current feed device for electric arc furnace employed to melt metals, wherein the feed line comprises at least a medium tension bar (13), a feed control device and a transformer (17) serving the furnace, the feed control device (16) being arranged between the medium tension bar (13) and the transformer of the furnace (17) and comprising a mutual inductor (19) consisting of a primary coil (19a) and a secondary (19b) coil, the primary coil (19a) being arranged in serial connection on the feed line (10) and the secondary coil (19b) being connected to at least a re-phasing filter (20) comprising at least a condenser (22).

Abstract: A method to control the drawing of rolled stock in a segment of the rolling line includes measuring the section of the rolled stock passing through is made by a first detector located at the outlet of the semi-finishing block and by a second detector located at the inlet to the finishing block. The method also carries out at least a measurement of the section of the rolled stock with a third detector located at the outlet of the finishing block, the drawing action being controlled and regulated by a control unit by comparing the measurements of the section at the outlet of the semi-finishing block, at the inlet to the finishing block and at the outlet thereof with the corresponding values memorized in tables in the control unit.