Abstract: A sensor system for monitoring and controlling the performance of the bottom electrode and the deflection of an electric arc in an electric steel making furnace includes an organized matrix of anode pins interspersed with refractory material and extending toward an electrically conductive plate secured to distal ends of the anode pins. A sensing device includes two temperature sensors at spaced apart locations along each of a distributed select group of anode pins for providing corresponding electrical signals and a current sensor responsive to electrical current flowing through the anode pins of the distributed select group of anode pins for providing a corresponding electrical signal. A controller responsive to the electrical signals derived at the anode pins of the select group operates the power supply and a display for monitoring the electrical performance of the elongated anode pins for heating by the electric arc in the furnace.

Abstract: A sensor system for monitoring and controlling the performance of the bottom electrode and the deflection of an electric arc in an electric steel making furnace includes an organized matrix of anode pins interspersed with refractory material and extending toward an electrically conductive plate secured to distal ends of the anode pins. A sensing device includes two temperature sensors at spaced apart locations along each of a distributed select group of anode pins for providing corresponding electrical signals and a current sensor responsive to electrical current flowing through the anode pins of the distributed select group of anode pins for providing a corresponding electrical signal. A controller responsive to the electrical signals derived at the anode pins of the select group operates the power supply and a display for monitoring the electrical performance of the elongated anode pins for heating by the electric arc in the furnace.

Abstract: A sensor system for monitoring and controlling the performance of the bottom electrode and the deflection of an electric arc in an electric steel making furnace includes an organized matrix of anode pins interspersed with refractory material and extending toward an electrically conductive plate secured to distal ends of the anode pins. A sensing device includes two temperature sensors at spaced apart locations along each of a distributed select group of anode pins for providing corresponding electrical signals and a current sensor responsive to electrical current flowing through the anode pins of the distributed select group of anode pins for providing a corresponding electrical signal. A controller responsive to the electrical signals derived at the anode pins of the select group operates the power supply and a display for monitoring the electrical performance of the elongated anode pins for heating by the electric arc in the furnace.

Abstract: The invention relates to a safety device (1) for detecting electrode breakage in an electric arc furnace, wherein an electrode (6) is secured on an electrode support arm (4), and wherein a conduit is filled with a medium under a constant pressure and a pressure drop is produced at an electrode breakage, which is detected as an alarm signal. Here, the conduit (7a-d,3) is integrated in a protective component that is arranged beneath the electrode support arm (4) thereon, wherein in case of an electrode breakage, the conduit (7a-d,3) is damaged by a produce electric arc and the pressure drop takes place.

Abstract: The invention relates to a method for the continuous casting of a metal strand (1), in which the cast strand (1) leaves a die (2) vertically or arcuately downwards and is subsequently guided in a strand guide (3), wherein the strand guide (3) has a number of pairs of rollers (4), which define between them an adjustable roller nip (5), and wherein, at the start of casting, to close the die (2) in the downward direction, a piece of strand (6) is introduced into the die (2) and is followed by the cast strand (1). In order to improve the adjustment of the roller nip, the invention provides that the piece of strand (6), which is produced with a defined or calibrated thickness (d), is inserted between the respective pairs of rollers to calibrate and/or measure the roller nip (5).

Abstract: A strand guide for a cast strand has a first roller bridge to one wide side of the cast strand and having ends defining two first section corners, a first fixed support adjacent the first roller bridge, a second roller bridge to the opposite wide side of the cast strand and having ends defining two second section corners, and a second fixed support adjacent the second roller bridge. Respective rows of rollers are rotatably mounted on each of the first and second roller bridges for engaging the respective wide sides and thereby supporting and guiding the cast strand. Respective first and second hydraulic positioners connect the first and second corners of the first and second roller bridges to the first and second fixed supports for individual positioning the rollers of the first and second roller bridges symmetrically or asymmetrically relative to the neutral phase of the cast strand.

Abstract: In a shaping process a metal strip is passed in a rolling direction through shaping rolls and a layer of treatment liquid is applied to a surface of the strip upstream of the shaping rolls. Measurement variables of the liquid on the surface are analyzed by laser-induced, time resolved fluorescent spectroscopic analysis or spectroscopic analysis in the infrared band.

Abstract: A mandrel for winding sheet metal has a generally tubular mandrel body extending along and centered on an axis and formed at one end with a plurality of radially throughgoing and angularly spaced apertures each having a pair of closed and axially confronting end faces, a spreading bar extending axially inside the body and having a respective pivot adjacent each of the apertures, respective rigid links extending through the apertures and having inner ends carried on the respective pivots and outer ends projecting outside the body, and respective segments outside the body and each pivoted on the outer end of a respective one of the links. Respective pressure plates are operatively connected at the one end between the segments and the mandrel body.

Abstract: The invention relates to a method for rolling up a metallic strip (1), in particular a steel strip, to a coil (2), the strip (1) being kept under longitudinal tension between a driver (3), consisting of at least one driver top roll (4) and at least one driver bottom roll (5), and a winding pin (6). The strip (1) is rolled up on the winding pin (6) to form the coil (2). In order to prevent the undesired opening of the wound coil in a simple manner, a bending moment (MB) is initiated in the strip, said bending moment acting perpendicular to the longitudinal direction of the strip (1) and causing a plastic deformation when a defined remaining length of the strip (1) is reached. The invention also relates to a device for rolling up a metallic strip.

Abstract: The invention relates to a method for manufacturing a metal strip (1), in which the metal strip (1) is guided over a number of rolls (2, 3, 4, 5) under such a strip stress (S), and is moved in a conveying direction (F), that it is largely flat at least between two rolls (2, 3). In order for it to be possible to inspect the strip in a simple and space-saving way, the invention provides for the inner tensile stresses which act in the metal strip (1) which is largely flat under tensile stress between the at least two rolls (2, 3), to be made optically visible and for the tensile stresses or tensile stress differences which are determined in this way to be utilized during the manufacture of the metal strip (1). Furthermore, the invention relates to an apparatus for manufacturing a metal strip.

Abstract: A carousel coiler with two coilers, which are mounted in a rotatable rotor, are rotatably driven independently of each other, are intended for the successive, continuous winding of metal strip and each have spray heads, which comprise a number of segments that can be moved in a spreading manner, are supported on axially displaceable wedge-shaped directing surfaces and on which the coilers can be cyclically moved in each case from a starting position into a strip-coil transfer position by turning of the rotor, is to be developed in such a way that a pivot-into-place outside bearing becomes superfluous, that the coil or the coil to be wound is always supported on both sides in every position, and that the carousel coiler can be used both for winding up and unwinding coils.

Abstract: The invention relates to a strip sealing gate (1) for sealing a first chamber (2) with a first pressure level (p1) in relation to a second chamber (3) with a second pressure level (p2) that differs from the first, a strip (4), in particular a metal strip, passing through both chambers (2, 3). According to the invention, at least two rollers (5, 6) are provided for sealing the chambers (2, 3), said rollers resting in a sealing manner on either side of the strip (4). The aim of the invention is to improve the sealing action. To achieve this, at least some sections of the circumference of at least one of the rollers (5, 6) are covered with a flexible elastic material (7) and said roller or rollers (5, 6) have an inner core (8) that is covered with a jacket consisting of the flexible elastic material (7). A central region (9) of the inner core (8) has a cylindrical contour (10) and the edge regions (11, 12) of the core (8) are flared.

Abstract: The aim of the invention is to create an inspection system (1) for rolled products (2) of a milling station, which is to reliably prevent the texture of the substrate from being impressed and/or pressing through during processing of the rolled product (2), especially during grinding. Said aim is achieved by disposing a number of vertically adjustable rolled product clamps (6, 8) on a conveyor belt (4) for rolled products (2) in the inspection system (1).

Abstract: The invention relates to a casting device (1) having a casting ladle (2), a distribution device (4), and a horizontally moveable transport belt (5) having side boundaries (13, 14), wherein liquid metal, preferably steel, can flow out of the casting ladle (2) onto the distribution device (4), and from there can be applied to the horizontal transport belt (5), the side boundaries (13, 14) of the horizontal transport belt (5) being adjustable across the width of the horizontal transport belt. The invention further relates to a corresponding method.

Abstract: The invention is directed to an arrangement for maintaining the warmth of slabs (3) which exit from a continuous casting installation and which can be transported on a roller table (1) for further processing. In order to optimize the thermal balance between the continuous casting installation and the hot rolling mill, it is proposed to provide a supporting part (2) for receiving a slab (3), which supporting part (2) can be placed on the roller table (1) and transported thereon, and an insulating box (4) which can be placed upon the supporting part (2) and which substantially encloses the latter.

Abstract: A method for the treatment of sheets which are rolled to final dimensions in a roll stand, subsequently undergoing on-line cooling, straightening and heat treatment for homogenization and influencing of microstructure. To improve the heat treatment, the heat treatment is carried out online such that it is decoupled from the preceding cooling and straightening, while taking into account the speed at which the sheet exits from the final workstation upstream, the time at which the heat treatment begins is selected in such a way that the sheet has completely left this final workstation before the sheet is subjected to the heat treatment.

Abstract: In a method of cooling and/or lubricating of rolls and/or rolling stock according to which a cooling medium is applied to the rolls from a plurality of nozzles/nozzle rows, on one hand, and for lubrication, on the other hand, base oil is applied to the rolling stock in front of a roll gap, wherein the nozzles/nozzle rows are adjusted separately and independent from each other the cooling medium is applied to the rolls separately from the base oil, and finally, the base oil without water as a base medium is applied directly to the rolling stock over an entire width thereof in a very small amount in comparison with a conventional amount. To this end, media separating means is arranged between the nozzles/nozzle rows for applying cooling medium to the rolls and the nozzles/nozzle rows for applying base oil to the rolling stock.

Abstract: The aim of the invention is to damp or suppress oscillations (?back-attack? effect) in sidewall or base blowing converters, used in particular to produce carbon steel or stainless steel. To achieve this, the gas supply system (3) for the converter comprises an inflow restrictor device (7), which is positioned upstream of or associated with the jets (5) and which periodically reduces or interrupts the gas supply to the interior of the furnace.

Abstract: The invention relates to a vessel (1) for the metallurgical treatment of pig iron, steel melts and similar, in particular a converter vessel, mounted on a support ring (3), arranged at a separation by means of pivot pins, whereby the vessel (1) rests on the top flange (3a) of the support ring (3) by means of claws (6) on the vessel wall (1b) and a support (4) is detachably embodied with additional fixing elements on the top flange (3a) of the support ring (3). According to the invention, the disadvantage of having to work in hot, restricted regions which are difficult for the personnel to access can be avoided, whereby the support on the top flange (3a) of the support ring (3) comprises opposing vessel brackets (7) and support ring brackets (8) which can be tensioned together in a closing direction (10) by means of a hinged closure (9) until a secure closed position is achieved and which may be easily opened in the opposing operating direction (12).

Abstract: The invention relates to a device and a method for supporting and guiding a cast strand in a strand guiding device (100) after leaving a continuous casting mould. The strand guiding device (100) comprises at least one segment, which has a first roller bridge (114-1) on one wide side of the cast strand and a second roller bridge (114-2) on the opposite wide side of the cast strand, wherein at least one roller is rotatably mounted respectively on the first and second roller bridges to support and guide the cast strand.