Abstract: Selection and control device to count bars being fed separated orthogonally to their axis on a plane and cooperating with a translating device such as a screw-type translator, the device including two optical monitors and a processing unit, the optical monitors being arranged at an angle with their apex substantially on the plane on which the bars are fed and whose respective monitoring axes cooperates with a portion of the plane on which the bar being fed passes. The respective monitoring axes have an angle of incidence with respect to the plane on which the bars are fed in the proximity of a common point cooperating substantially with the positioning seating of the bars on the translating device, each of the monitors lying on a plane substantially orthogonal to the plane on which the bars are fed, and to the axis of the bars, and including respective angles (".alpha.",".beta.") with respect to a line vertical to the plane of feed, the angles (".alpha.", ".beta.") defining an angle (".gamma.

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.

Abstract: Method and device to control between rolling stands the drawing of the rolled stock (14) in a segment (10) of a rolling line, the segment (10) possibly comprising two conventional rolling stands with or without an interposed drawing unit (19), a conventional rolling stand and a drawing unit (19), a rolling stand and a fast rolling block (11a), two fast rolling blocks (11a, 11b) with an intermediate thermomechanical treatment or another type of combination of rolling units, there being included a possible intake drawing unit (12) and a possible discharge drawing unit (13) associated with a shears (20), the method including the measuring of the drawing action applied to the rolled stock (14) in the segment between stands comprised between two rolling units, one upstream (11a) and the other downstream (11b) and/or between a rolling unit and the relative drawing unit (19).

Abstract: A method of controlling and maintaining a drawing force applied to a length of rolled stock between two-spaced apart rolling units includes the steps of determining the value of at least one of a frequency and an amplitude of a transversed vibration of the rolled stock between the drawing units, correlation of the determined value to a corresponding value of drawing force, comparison of the correlated value of the drawing force to a reference value, and adjustment of the drawing force to maintain it at a substantially constant selected value. In another aspect of the invention an apparatus is provided which includes elements for measuring at least one of a frequency and an amplitude of a traversed vibration experienced by a length of rolled stock between two drawing units, a unit for correlating the measured value to a corresponding value of applied drawing force, and a control unit for adjusting the applied drawing force as necessary to maintain it substantially at a selected constant value.

Abstract: Device to detect surface faults in a hot metallic bar or wire rod (11) travelling at speeds up to 130 meters per second, the device comprising upstream and/or downstream rough alignment lead-in means (38), in which device are included first coils (29) and at least one pair of second coils (13) coaxial with the first coils (29), the first coils (29) generating an alternating magnetic flow which causes on the surface of the bar (11) parasitic currents that generate in the second coils (13) a magnetic feedback flow, the first (29) and second (13) coils defining a measurement assembly (12), at least two measurement assemblies (12) being included and having their lengthwise axis able to move from an open position defining an intake hole (15), in which the various lengthwise axes coincide substantially with the nominal axis of the feed of the bar (11), to an inspection position defining a resulting inspection hole (15R), in which inspection position the lengthwise axes are substantially parallel to the nominal axis

Abstract: Device to intensify the magnetic field in an ingot mould, the device cooperating with an ingot mould body (10) and with a means (11) which is positioned outside an outer jacket (14) of the ingot mould body (10) and generates a magnetic field, whereby independent, replaceable auxiliary extension pole pieces (18) stretching substantially towards a crystallizer (12) are comprised within outer jacket (14) of the mould body (10) in correlation with pole pieces (16).

Abstract: Device to measure the level of liquid metal in a crystallizer of a continuous casting ignot mould, the device employing a source of an electromagnetic field and providing for an emitter coil (17) and at least one receiver coil (18) and including the supply of the emitter coil (17) with at least one high frequency. The emitter coil (17) and receiver coil (18) being located inside a container (15) within the body of the ingot mould in cooperation with a cooling fluid conveyor (11) and being coupled electromagnetically to one single wall of the crystallizer (12) and to the volume within the crystallizer (12).