Patents Examined by Michael Aboagye
  • Patent number: 11549156
    Abstract: An improved apparatus for producing steel, including a lower furnace, an annular, water-cooled, fireproof lined cylindrical upper furnace, on which an upwardly closing conically tapering hat having openings can be placed. The smelting assembly is configured for the operational mode without melt flow and the operational mode with melt flow. To this end, at least one opening is provided in the conical furnace cover, through which opening at least one top lance can be introduced into the upper furnace. A plurality of sidewall injectors radially rotate around the cylindrical upper furnace in such a way that in a working position, the top lance and the sidewall injectors are directed onto a smelt level of a molten mass located in the lower furnace for refining.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: January 10, 2023
    Assignee: SMS GROUP GMBH
    Inventors: Peter Starke, Andreas Schüring, Thomas Henkel, Hans-Jürgen Odenthal
  • Patent number: 11549755
    Abstract: Apparatus and methods for stirring a molten metal are provided. The apparatus comprising: two or more discrete units, each unit including a core being provided with two or more teeth, the core being provided with at least one electrically conducting coils; in use, mounting a first discrete unit in proximity to the container at a first location; in use, mounting a second discrete unit in proximity to the container at a second location; electrical connections between the two or more discrete units and a common control unit, thereby providing an electromagnetic stirrer. The apparatus format allows the discrete units to be position between different pairs of elements or parts of furnaces and the like to allow retrofitting of electromagnetic stirring where access is restricted.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: January 10, 2023
    Inventors: Stephen Makepeace, Alan Peel, Isaac Sewell
  • Patent number: 11548044
    Abstract: Device for cooling flat rolled material with a liquid coolant has at least one cooling bar, which is arranged above the conveying path and to which the liquid coolant is fed. A plurality of outlet tubes have, in a flow direction of the liquid coolant, an initial portion, which proceeds from the inlet opening and extends upward, a middle portion, which adjoins the initial portion, and an end portion, which adjoins the middle portion and extends downward and to the output opening. The middle portion contains a vertex at which the coolant flowing through the outlet tube in question reaches a highest point. The outlet openings are located above the cooling bar. A height distance (h1) of the inlet opening from the vertex is at least twice as large, in particular at least three times as large, as a height distance (h2) of the outlet opening from the vertex.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: January 10, 2023
    Assignee: Primetals Technologies Austria GmbH
    Inventors: Erich Opitz, Lukas Pichler, Florian Poeschl, Alois Seilinger, Klaus Weinzierl
  • Patent number: 11542568
    Abstract: An heat treatment apparatus for a vehicle body component includes, a jig base, a lower fixed die fixedly installed on the jig base and supporting the vehicle body component that is press-molded into a predetermined shape, a heating unit installed on the lower fixed die and locally heating the vehicle body component, a plurality of side movable dies that can move reciprocally disposed at both sides of the lower fixed die, installed on the jig base, and selectively combinable with the lower fixed die, a cooling unit installed on each side movable die and cooling a heating portion of the vehicle body component, and an upper movable die that can move reciprocally in the up and down direction correspondingly to the lower fixed die, and configured to clamp the vehicle body component through the lower fixed die and at least one of the side movable dies combined together.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: January 3, 2023
    Inventor: Hyeon-Cheol Choi
  • Patent number: 11534809
    Abstract: A device and a method for cooling metal strips or sheets conveyed on a conveyor line, in particular hot-rolled strips in the outlet of a rolling train. For these purposes, the device includes at least one cooling beam extending across the width of the conveyor line, and the cooling beam features a connection point to which a supply tube for cooling liquid can be connected, and a number of discharge openings arranged along a longitudinal axis of the cooling beam, such that cooling liquid can be discharged through the discharge openings in the direction of the metal strip or sheet that is to be cooled. Associated with each of the individual discharge openings is a respectively adjusted flow area, such that the flow areas of the respective discharge openings decrease in a direction leading away from the connecting point along the longitudinal axis of the cooling beam.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: December 27, 2022
    Assignee: SMS group GmbH
    Inventors: Christoph Hassel, Thomas Heimann, Heinz-Jürgen Oudehinken, Henning Berg, Johannes Alken
  • Patent number: 11535904
    Abstract: A cooling box for a metallurgical furnace including an elongated hollow body extending from a front end, to an opposite rear end, the rear end being, in use, connected to a wall of the furnace; the body includes an inner chamber having a cooling circuit configured to receive a flow of coolant fluid therein between at least one inlet and at least one outlet; the cooling box further including at least one partition plate fitted in the inner chamber through a form-fit connection to form the cooling circuit.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: December 27, 2022
    Inventors: Stefano Olivieri, Lorenzo Micheletti, Fabio Cravino
  • Patent number: 11536515
    Abstract: Provided is a roller shaft insulation member for reducing the heat which is conducted to the bearings by passing through the space between the roller insertion hole of a continuous annealing furnace and the roller, wherein the roller shaft insulation member of the continuous annealing furnace comprises an inorganic fiber blanket, which contacts or is near the outer circumferential surface of the roller and in which the content of 45 ?m or larger shot is 3% or less. A continuous annealing furnace provided with said roller shaft insulation member is also provided.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: December 27, 2022
    Assignee: MAFTEC CO., LTD.
    Inventors: Masakuni Taguchi, Mitsuo Suzuki, Akihiro Yano
  • Patent number: 11536514
    Abstract: This electric furnace includes one or more upper electrodes, one or more bottom-blowing tuyeres, a mechanical stirrer equipped with an impeller, and a charging device which injects an iron oxide-containing iron raw material.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: December 27, 2022
    Inventors: Takahiro Taguchi, Tsuyoshi Yamazaki, Shuhei Kasahara
  • Patent number: 11519043
    Abstract: A roller treatment process and a treatment device suitable for a total-amount steel slag treatment. The treatment process is: firstly, a slag tank (2) with the molten slag is tightly held by a slag tank tilting mechanism and moved to a slag inlet position, the slag tank (2) is tilted to pour the molten slag with good fluidity into a rotary roller device (5) through a feeding chute (51), so that a roller treatment is achieved; secondly, when the steel slag (3) without fluidity in the slag tank (2) cannot flow out, a slag removal machine (4) is used for pushing the high-viscosity slag or the solid slag into the roller device (5); and thirdly, the slag tank (2) is reversed by a large angle tilting to make the slag at the bottom of the tank drop into the roller device (5), so that the total-amount steel slag treatment of the same roller device (5) is achieved.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: December 6, 2022
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Yongqian Li, Yongli Xiao, Yin Liu, Youping Zhang, Mengqin Xie
  • Patent number: 11512899
    Abstract: Disclosed is a blast furnace apparatus includes: a rotating chute; a plurality of tuyeres; a profile measurement device configured to measure surface profiles of a burden charged into the blast furnace through the rotating chute; and a blowing amount controller configured to control a blowing amount of at least one of hot blast or pulverized coal in each of the plurality of tuyeres, in which the profile measurement device includes: a radio wave distance meter installed on the blast furnace top and configured to measure the distance to the surface of the burden charged; and an arithmetic unit configured to derive the surface profiles of the burden on a basis of distance data for the entire blast furnace related to distances to the surface of the burden obtained by scanning a detection wave of the radio wave distance meter in the blast furnace in a circumferential direction.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: November 29, 2022
    Inventors: Yusuke Kashihara, Yuki Okamoto, Natsuo Ishiwata
  • Patent number: 11508519
    Abstract: Disclosed are a continuous heat treatment device and method for a sintered Nd—Fe—B magnet workpiece. The device comprises a first heat treatment chamber, a first cooling chamber, a second heat treatment chamber, and a second cooling chamber continuously disposed in sequence, as well as a transfer system disposed among the chambers to transfer the alloy workpiece or the metal workpiece; both the first cooling chamber and the second cooling chamber adopt a air cooling system, wherein a cooling air temperature of the first cooling chamber is 25° C. or above and differs from a heat treatment temperature of the first heat treatment chamber by at least 450° C.; a cooling air temperature of the second cooling chamber is 25° C. or above and differs from a heat treatment temperature of the second heat treatment chamber by at least 300° C. The continuous heat treatment device and method can improve the cooling rate and production efficiency and improve the properties and consistency of the products.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: November 22, 2022
    Assignee: Fujian Changting Golden Dragon Rare-Earth Co., Ltd
    Inventors: Qingjiang Wang, Ying Luo, Jianpeng Wu
  • Patent number: 11505840
    Abstract: A cooling plate for a metallurgical furnace including a body with a front face and an opposite rear face, the body having at least one cooling channel therein having an opening in the rear face and a coolant feed pipe is connected to the rear face of the cooling panel and is in fluid communication with the cooling channel, where in use, the front face is turned towards a furnace interior, and at least one emergency cooling tube is arranged within the cooling channel, the emergency cooling tube having a cross-section smaller than a cross-section of the cooling channel, the emergency cooling tube has an end section with connection means for connecting an emergency feed pipe thereto, and in an emergency operation, the emergency cooling tube is physically connected to an emergency feed pipe via the connection means; while, in a normal operation, the connection means of the emergency cooling tube is physically disconnected from the emergency feed pipe. The invention also concerns the use of such a cooling plate.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: November 22, 2022
    Assignee: PAUL WURTH S.A.
    Inventor: Nicolas Maggioli
  • Patent number: 11499202
    Abstract: A cooling method for a workpiece includes placing entirety of the workpiece in an inner space of a recess provided on a molding surface of a lower mold, pressing or restraining the workpiece by a mold including the lower mold and an upper mold in which a protrusion corresponding to the recess of the lower mold is provided on a molding surface, supplying a liquid coolant to the inner space of the recess through a coolant supply passage provided in at least one of the lower mold and the upper mold by a pump, and discharging air in the inner space of the recess upward through an air escape passage, and cooling the workpiece by immersing the entirety of the workpiece, which has been heated, in the liquid coolant that fills the recess.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: November 15, 2022
    Inventors: Akihiro Seki, Nobuyuki Naito, Yoichi Jinza, Hiroshi Fukuchi, Kazuo Hikida, Ken Takata, Naruhiko Nomura
  • Patent number: 11473842
    Abstract: A melting work device and a melting work method by which work can be easily performed on a melting furnace without a worker approaching the melting furnace. A melting work device performs work on a melt obtained by melting a material in a melting furnace. The melting work device has a drive mechanism; and a plurality of work tools that are operated by the drive mechanism; wherein the drive mechanism is able to move the work tools in an arbitrary direction at an arbitrary location above the melting furnace.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: October 18, 2022
    Assignee: SINTOKOGIO, LTD.
    Inventors: Kenji Tamaki, Takahiro Yano, Masayuki Ishikawa
  • Patent number: 11473841
    Abstract: The present invention provides an electric furnace including: a cylindrical furnace wall; a furnace cover that is provided at an upper end of the furnace wall; and a furnace bottom that is provided at a lower end of the furnace wall and includes a deep bottom portion and a shallow bottom portion as a region having a height of 150 mm to 500 mm from a deepest point of the deep bottom portion, in which a slag pouring port into which molten slag or a solidified slag lump is capable of being poured from a slag transport container directly or through a tilting trough is provided, the slag pouring port overlaps the shallow bottom portion in a plan view, and the area ratio of the shallow bottom portion to the furnace bottom in a plan view is 5% to 40%.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: October 18, 2022
    Inventor: Toshiya Harada
  • Patent number: 11466332
    Abstract: The invention relates to a process for injecting particulate material into a liquid metal bath wherein the liquid metal bath contains species to be oxidized, wherein the particulate material is carried to the liquid bath by means of a first gas stream. The solids injection rate is controlled such that the liquid bath temperature and/or the evolution of the liquid bath temperature is maintained within a pre-defined temperature range and the penetration depth of the first gas stream into the liquid bath is controlled by adjusting the flow of the first gas stream. At least one second gas stream is injected into the liquid, wherein the first and the second gas streams are an oxidizing gas, in particular oxygen, and the sum of the gas flows of the first and the second gas streams is determined based on the mass of the species to be oxidized and on the desired time for oxidizing the mass of the species.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 11, 2022
    Assignee: Linde GmbH
    Inventor: Andrew Cameron
  • Patent number: 11454445
    Abstract: The present invention relates to delivering sand to a metal melting furnace to fill a tap hole. The swiveling sander moves into position through a horizontal arcing movement. The Swiveling Sanding Systems comprises a swiveling sander with slag plunger. The Swiveling Sander swivels from a home position into a sanding position in order to add sand to a metal melting furnace at the same time as the slag plunger moves out of the way. After delivering sand, the swiveling sander swivels back to home position while the slag plunger also moves back to home position followed by the plunger clearing any slag.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: September 27, 2022
    Assignee: Celebre 2000 Inc.
    Inventors: Claudio Celebre, Harpreet Singh
  • Patent number: 11448227
    Abstract: A tool for simultaneous local stress relief of each of a multiple of linear friction welds includes a columnar track defined along an axis, the columnar track having a helical slot; and a support structure engaged with the helical slot to translate and rotate a heat treat fixture portion along the axis.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: September 20, 2022
    Assignee: Raytheon Technologies Corporation
    Inventors: Daniel A. Bales, Andrew L. Haynes, Luke H. Rettberg
  • Patent number: 11428468
    Abstract: A rotary hearth furnace includes: a furnace body which surrounds a ring-like space; a hearth portion which forms a bottom portion of the ring-like space and is rotatable in the rotational direction; a gas exhaust portion which discharges an exhaust gas generated in the ring-like space to the outside of the furnace body; an introducing portion; and a flow rate regulating portion. The introducing portion is disposed upstream of the gas exhaust portion in the rotational direction and introduces a pressure regulating gas into a non-heating section of the ring-like space. The flow rate regulating portion is disposed between the introducing portion and the gas exhaust portion and regulates a flow rate of a gas by adjusting an opening area of the non-heating section.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 30, 2022
    Assignee: Kobe Steel, Ltd.
    Inventors: Tomoki Uemura, Sumito Hashimoto, Koji Tokuda
  • Patent number: 11421289
    Abstract: A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide Fe3C; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: August 23, 2022
    Inventors: Francesco Memoli, Cesare Giavani, Silvio Maria Reali, Kyle James Shoop