| DANIELI & C. OFFICINE MECCANICHE SPA Patent applications |
| Patent application number | Title | Published |
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| 20120125157 | METHOD FOR PRODUCING DIRECT REDUCED IRON WITH LIMITED CO2 EMISSIONS - A method and apparatus for producing direct reduced iron (DRI), also known as sponge iron, by means of direct contact of iron oxides with a stream of recycled and regenerated hot reducing gases containing hydrogen and carbon monoxide. The invention provides a way for decreasing the uncontained emission of CO | 05-24-2012 |
| 20120018930 | TEMPERATURE MAINTENANCE AND/OR POSSIBLE HEATING APPARATUS FOR LONG METAL PRODUCTS AND RELATIVE METHOD - A temperature maintenance and/or possible heating apparatus for long products, continuously cast and sheared to size by means of shearing means so as to define segments of bloom, said apparatus being disposed between a casting machine having a first casting line and a second casting line, and a rolling line disposed downstream of the casting machine in order to make long rolled metal products. The apparatus comprises a first furnace, a second furnace and a transit tunnel. The first furnace is provided with a first introduction rollerway to introduce the bloom segments, disposed aligned with said first casting line, a removal rollerway, aligned with said rolling line and suitable to render the bloom segments available to said rolling line, and transverse transfer devices to transfer the bloom segments from the first introduction rollerway to the removal rollerway. The second furnace is disposed upstream with respect to said first furnace, provided with a second introduction rollerway to introduce the bloom segments, disposed aligned with said second casting line, an exit rollerway aligned with the removal rollerway and suitable to convey the bloom segments toward said removal rollerway and transverse transfer devices suitable to transfer the bloom segments from the second introduction rollerway toward the exit rollerway. The transit tunnel is located aligned with said first casting line, adjacent and parallel to the longitudinal extension of the second furnace and upstream of said first furnace, conformed to transport the cast bloom segments from said first casting line toward the first introduction rollerway of the first furnace. | 01-26-2012 |
| 20120018114 | CASTING AND CONTINUOUS ROLLING METHOD AND PLANT TO MAKE LONG METAL ROLLED PRODUCTS - A method to make long rolled metal products, comprising the following steps: continuous casting, made by a continuous casting machine to two casting lines, each of the two casting lines casting a product with a square, rectangular or equivalent section, with a ratio between the larger side and the shorter side of the section comprised between 1 and 4; shearing to size of the cast product by each casting line so as to define a segment comprised between 16 and 150 m in length and comprised between 10 and 100 tons in weight; direct introduction of each segment, having an average temperature of at least 1000° C.-1150° C., into a maintenance and/or possible heating furnace, comprising a first and a second movement section each disposed in axis respectively with one of the two casting lines in order to receive a respective segment; lateral transfer of each segment inside the furnace in order to dispose each segment in a third movement section disposed parallel and misaligned with respect to the first and the second movement section and aligned to a rolling axis of a rolling line parallel and offset with respect to the two casting lines; reduction of the section in a rolling mill defining said rolling axis. | 01-26-2012 |
| 20120018111 | TEMPERATURE MAINTENANCE AND/OR POSSIBLE HEATING APPARATUS FOR LONG METAL PRODUCTS AND RELATIVE METHOD - A temperature maintenance and/or possible heating apparatus for long products continuously cast and sheared to size by means of shearing means so as to define segments of bloom, said apparatus being disposed between a casting machine having a first casting line and a second casting line, and a rolling line disposed downstream of the casting machine in order to make long rolled metal products. The apparatus comprises: a mobile movement section of said bloom segments, disposed downstream of said shearing means and comprising a first mobile line and a second mobile line, said first and second mobile line being suitable to move transversely to the direction of advance of the bloom segments in order to move to a first position in which said mobile line and/or said second mobile line are aligned respectively with the first casting line and with the second casting line and to a second position in which one of either of said first mobile line or said second mobile line is aligned with a conveying axis; and a furnace, disposed downstream of said mobile movement section, comprising an entrance rollerway for the bloom segments aligned with said conveying axis, and an exit rollerway aligned with said rolling line and transverse transfer devices suitable to transfer the bloom segments from the entrance rollerway toward the exit rollerway. | 01-26-2012 |
| 20110315340 | CASTING AND CONTINUOUS ROLLING METHOD AND PLANT TO MAKE LONG METAL ROLLED PRODUCTS - A method to make long metal rolled products comprising the following steps:
| 12-29-2011 |
| 20110308757 | CASTING AND CONTINUOUS ROLLING METHOD AND PLANT FOR MAKING LONG METAL ROLLED PRODUCTS - A method and plant for making long metal rolled products, in which a continuous casting is provided made by a single casting machine, defining a casting axis, to cast a product with a quadrangular or equivalent section, a reduction of the section in a rolling mill defining a rolling axis substantially coinciding with the casting axis, and a selective accumulation and maintenance at temperature of a plurality of segments of cast product sheared to size in a misaligned position with respect to the casting axis and/or the rolling axis, inside a maintenance box furnace, for a time correlated to a condition of temporary interruption of the reduction step, so as to allow continuity of the continuous casting step. | 12-22-2011 |
| 20110272116 | METHOD AND PLANT FOR THE PRODUCTION OF FLAT ROLLED PRODUCTS - A rolling method in a rolling line, to obtain strip with a thickness varying from 0.7 mm to 20 mm, for steel which can be cast in the form of thin slabs with a thickness from 30 mm to 140 mm, the line includes a continuous casting device; a tunnel furnace for maintenance/equalization and possible heating; a rolling train having a roughing train and a finishing train; a rapid heating unit, with elements able to be selectively activated, interposed between the roughing train and the finishing train. For each lay-out of the rolling line, the position of the rapid heating unit which defines the number of stands which form the roughing train, disposed upstream of the unit, and the number of stands which form the finishing train, disposed downstream of the unit, is calculated as a function of the product of the thickness and speed of the thin slab. | 11-10-2011 |
| 20110259071 | ADJUSTMENT DEVICE FOR GUIDE ROLLERS AND RELATIVE ADJUSTMENT METHOD - An adjustment device and method to guide a metal product along a determinate nominal rolling axis. The device comprises a central body disposed astride the rolling axis, two guide units mounted movable on the central body, opposite each other with respect to the rolling axis and each provided with at least a guide roller for the metal product, and an adjustment mechanism mounted on the central body and operatively connected to both the guide units, in order to actuate the selective movement thereof with respect to the central body at least in an approach toward the rolling axis. The adjustment mechanism comprises a system of pantograph levers having two levers pivoted to each other and to the central body in correspondence to the rolling axis by means of a pin, and first constraint means disposed on each lever on opposite sides to the pin, so as to connect each lever to both the guide units. | 10-27-2011 |
| 20100326240 | CONTROL METHOD FOR MELTING A METAL CHARGE AND WEIGHING DEVICE USED IN SAID METHOD - A control method for melting a metal charge in a furnace comprising at least a hearth containing the metal charge and a roof. The method provides that the hearth is weighed by means of a plurality of weighing elements distributed along the perimeter of the base of the hearth, and that the values detected by the plurality of weighing elements are sent to a control unit in order to obtain information relating to the distribution of the metal charge inside the hearth. | 12-30-2010 |
| 20100038049 | BEARING STRUCTURE FOR CONTINUOUS CASTING MACHINE - A bearing structure for a curved continuous casting machine includes a monolithic and integrated structure, made of metal sheet, substantially closed and self-bearing, having at the upper part a seating or base suitable for the assembly of an ingot mold and accommodating along the casting curve both the rolls for containing and guiding the cast product, and also at least part of a secondary cooling system. | 02-18-2010 |
| 20090165517 | Rolling Plant - A hot-rolling plant ( | 07-02-2009 |
| 20090020258 | PLANT FOR PRODUCING METAL STRIP - Plant for the continuous casting of thick slabs, blooms or other similar steel products comprising an ingot mould and a series of containment and guiding rollers placed in the area below the ingot mould on both sides of the cast product, i.e. on the intrados and extrados, respectively. The rollers are arranged on at least three longitudinal rows and all have an axial length shorter that the width of the cast product. The rollers of a central longitudinal row are advantageously staggered with respect to the lateral longitudinal row rollers in such a way as to reduce the surface of the bulges created due to the ferrostatic pressure existing in the liquid core of the product at ingot mould outlet. Furthermore, the pitch between the adjacent rollers is advantageously always of different values so as to not cause the buckling of the bulges with a single frequency. | 01-22-2009 |
| 20090013828 | Reduction Process and Plant - Reduction process and relative plant for the production of metallic iron by means of the direct reduction of iron ore, in which a reduction shaft is connected to a source of reducing gas obtained from the gasification of coal. The process advantageously comprises a step in which a portion or all of the synthesis gas entering the plant circuit is processed to separate the methane from the rest of the components of said synthesis gas. The advantageous management of the extracted methane enables the entire reduction process to be optimized, making the efficiency of the process independent of the methane content in the original synthesis gas and making it possible to control the carbon content of the product more accurately and more easily. | 01-15-2009 |
| 20080295990 | Oscillating Table - Oscillating table in which the oscillation drive, comprising a hydraulic actuator, transmits the oscillating motion to the mould via a spring subject to bending stress, for example a fitted rod. The body of the hydraulic actuator is also anchored to the floor by means of a fitted spring subjected to bending stress. Thus thanks to the absence of any mechanical bearings in the drive mechanism, all disadvantageous movements caused as a result of bearing play, which increases at high oscillation frequencies, are eliminated. Moreover, the use of mould guide elements having a much simpler design and consisting of straightforward bars, also ensures greater guidance precision and enables a reduction in the oscillation marks on the cast product, a reduction that is even more noticeable when working at higher oscillation frequencies. Advantageously, the presence of an anti-roll device, consisting of two or more pairs of bars, for example two pairs, ensures good torsional rigidity of the table. | 12-04-2008 |
| 20080257524 | Delivery Device and Method for Using the Same - Discharge device for discharging liquid steel into a roller crystallizer for the continuous casting of thin strip capable of reducing turbulence at the meniscus to a minimum so as to eliminate the relative defects on the cast strip by passing the steel between two crystallizer rollers. A relative casting process is also described, said process providing for particular expedients for improving the steel feeding from the tundish to the crystallizer. Advantageously, the feeding of guided steel jet streams inside the nozzle, or delivery nozzle, eliminates the disturbance at the meniscus caused by the air bubbles which form when free-falling jet streams come into contact with the air, as occurs in the known devices and plants. | 10-23-2008 |
| 20080217456 | Coiling Method and Device for Rolled or Drawn Long Products - Coiling method and device (“R”) for a long product ( | 09-11-2008 |
