With Analyzer Or Computation Means Patents (Class 266/80)
  • Patent number: 10114389
    Abstract: A processing device determines a plurality of initial flow setpoint commands, each of the plurality of setpoint commands corresponding to one of a plurality of valves. The processing device sends each of the plurality of initial setpoint commands to a corresponding one of the plurality of valves. The processing device receives feedback from each of the plurality of valves and determines a plurality of updated flow setpoint commands, each of which corresponds to one of the plurality of valves based on the corresponding feedback from each of the plurality of valves.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: October 30, 2018
    Assignee: Applied Materials, Inc.
    Inventor: Mariusch Gregor
  • Patent number: 9982321
    Abstract: Various embodiments provide a leaching solution monitoring module comprising a first leaching solution distribution system interface, a flow meter in fluid communication with the first leaching solution distribution system interface, the flow meter in fluid communication a 3-way pressure regulator, and a second leaching solution distribution system interface in fluid communication with the 3-way pressure regulator.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: May 29, 2018
    Assignee: FREEPORT MINERALS CORPORATION
    Inventors: John Warren Dean, Jr., Christopher Wooten, Chase Zenner
  • Patent number: 9689076
    Abstract: In a process for cleaning contaminating silicon dioxide SiO2 off of turbine blades, silicon dioxide that is on the turbine blades is reduced selectively in a vacuum process that takes place in dry conditions and at elevated temperature inside a high vacuum furnace, by feeding gas having a reducing action, consisting of hydrogen gas or carbon monoxide, is introduced into the high vacuum furnace. The temperature inside the high vacuum furnace is at least about 1000 degrees Celsius, and the residence time of the turbine blades in the high vacuum furnace is determined with reference to the diminishment of the SiO concentration, as analyzed with a mass spectrometer. The electrically heatable high vacuum furnace is evacuable by means of a vacuum system that consists of a backing pump and a turbomolecular pump with an adjustable throttle valve and a water-cooled baffle.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: June 27, 2017
    Assignee: Airbus DS GmbH
    Inventor: Walter Schwarting
  • Publication number: 20150108698
    Abstract: A method operates a vacuum melting system for metallurgically treating molten steel. A vacuum melting system is operated according to the method. The acoustic signals generated in a ladle which receives the molten steel are detected by at least one structure-borne noise detector which is directly or indirectly acoustically coupled to the ladle, and the acoustic signals are used to ascertain the height or the thickness of the foamed slag which can be found in the ladle over the molten bath of the molten steel.
    Type: Application
    Filed: March 21, 2013
    Publication date: April 23, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Matschullat, Detlef Rieger
  • Publication number: 20150091223
    Abstract: Metallurgical treatment of a steel melt is provided in a vacuum melting system in which acoustic signals generated in a pan receiving the steel melt are recorded with at least one structure-borne sound pick-up acoustically coupled directly or indirectly to the pan. The acoustic signals are used to determine a variable characterizing the operating state of the vacuum melting system.
    Type: Application
    Filed: March 21, 2013
    Publication date: April 2, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Matschullat, Detlef Rieger
  • Publication number: 20140361472
    Abstract: In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO2 separation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the CO2 separation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use.
    Type: Application
    Filed: August 21, 2014
    Publication date: December 11, 2014
    Inventors: Robert MILLNER, Johannes Leopold SCHENK, Kurt WIEDER
  • Patent number: 8865057
    Abstract: Apparatus and methods for industrial-scale production of metal matrix nanocomposites (MMNCs) are provided. The apparatus and methods can be used for the batch production of an MMNC in a volume of molten metal housed within the cavity of a production chamber. Within the volume of molten metal, a flow is created which continuously carries agglomerates of nanoparticles, which have been introduced into the molten metal, through a cavitation zone formed in a cavitation cell housed within the production chamber.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Xiaochun Li, Noe Gaudencio Alba-Baena, Daniel Earl Hoefert, David Weiss, Woo-hyun Cho, Ben Peter Slater, Hongseok Choi
  • Patent number: 8771586
    Abstract: An apparatus for processing material such as organically coated waste and organic materials including biomass, industrial waste, municipal solid waste and sludge, is provided. The apparatus comprises a rotatable and tiltable furnace (1) having a body portion (15), a single material entry point (11) and a tapered portion (13) between the entry point and the body. The furnace has a closure through which material can be introduced to the furnace (1) when open and in which the interior of the furnace is isolated from the external environment when closed. A director at or adjacent the entry point (11) directs gases inwardly of the furnace so as to provide a barrier of gas adjacent the opening to inhibit the entrance of oxygen containing atmospheric gas when the closure is in its open position.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: July 8, 2014
    Inventor: Fanli Meng
  • Patent number: 8764915
    Abstract: In order to provide a further uniform carburizing treatment to an article to be treated, a carburizing treatment apparatus which performs carburizing treatment by heating the article to be treated in a treatment chamber, the inside of which is under reduced pressure and in a carburizing gas atmosphere, includes a temperature measurement means for measuring temperatures in a plurality of regions inside the treatment chamber and a temperature adjustment means for individually adjusting temperatures in the plurality of regions on the basis of measurement results of the temperature measurement means so that the article to be treated is given a uniform carburizing treatment.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: July 1, 2014
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventor: Kazuhiko Katsumata
  • Patent number: 8617457
    Abstract: An apparatus for condensing metal vapors has at least one inlet conduit that is cooled to cause a portion of the metal vapor to condense to liquid. The apparatus also has a holding tank that is connected to the inlet conduit that collects condensed liquid metal. The apparatus also has at least one outlet conduit connected to the holding tank that is cooled to cause a portion of the remaining metal vapor to condense to solid metal. The apparatus also has at least one heater that heats the at least one outlet conduit to cause the solid metal to melt to liquid metal and subsequently flow in to the holding tank. The apparatus also has at least one sealing mechanism located at a distal end of the at least one outlet conduit for preventing metal vapor and carrier gas from exiting the outlet conduit during heating of the outlet conduit.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 31, 2013
    Assignee: Infinium, Inc.
    Inventors: Adam Clayton Powell, Soobhankar Pati, Jason Douglas, Stephen J. Derezinski, III, Luciano Spiridigliozzi, Michael Buchman, Thomas Eagar
  • Publication number: 20130000445
    Abstract: In a method and an apparatus for setting a slag consistency in an electric arc furnace, structure-borne sound measurements are carried out on the electric arc furnace during the melting
    Type: Application
    Filed: February 7, 2011
    Publication date: January 3, 2013
    Inventor: Thomas Matschullat
  • Patent number: 8313586
    Abstract: A method and a device for the heat treatment of metal materials in an industrial furnace involves a heating chamber having a treatment chamber and a quenching chamber utilizing protective gas and reaction gas.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: November 20, 2012
    Assignee: Ipsen International, GmbH
    Inventors: Bernd Edenhofer, Hendrik Grobler, Peter Haase
  • Patent number: 8313552
    Abstract: A method and an apparatus for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier, with the introduction of oxygen-containing gas streams through oxygen nozzles into the solid bed. At least one oxygen nozzle has a single gas supply and introduces at least two gas streams. Using plural gas streams from a nozzle reduces the risk of fluidization of the solid bed because the number of gas raceways in materials in the gasifier is increased.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: November 20, 2012
    Assignees: Siemens Vai Metals Technologies GmbH, Posco
    Inventor: Leopold Werner Kepplinger
  • Publication number: 20120118106
    Abstract: An apparatus for processing material such as organically coated waste and organic materials including biomass, industrial waste, municipal solid waste and sludge, is provided. The apparatus comprises a rotatable and tillable furnace (1) having a body portion (15), a single material entry point (11) and a tapered portion (13) between said entry point and said body portion of the furnace. The furnace further includes means (25) for rotating the furnace (1) about its longitudinal axis and means (32, 102) for tilting the furnace. The furnace has a closure movable between an open position in which material can be introduced to the furnace (1) and a closed position in which the interior of the furnace is isolated from the external environment. A means at or adjacent said entry point (11) for directs gases in a direction inwardly of said furnace so as to provide a barrier of gas adjacent said opening to inhibit the entrance of oxygen containing atmospheric gas when said closure is in its open position.
    Type: Application
    Filed: July 9, 2010
    Publication date: May 17, 2012
    Inventor: Fanli Meng
  • Patent number: 8175744
    Abstract: In order to plan the performance of heat treatment of metal workpieces before the beginning of the heat treatment in the particular industrial furnace and perform it autonomously thereafter, the invention proposes a method and computer program and an apparatus having a computer (1) for the automatic preparation of technological formulas for the heat treatment, firstly loading parameters of a selected material of the metal workpiece and a formula structure template of a selected treatment method from a material databank (10) and providing data from a user interface and compiling a formula structure, then establishing the parameters of the metal workpiece, the compiled formula structure, and the data from the user interface as values of formula segments, from which the technological formula for heat treatment is finally generated, this technological formula being able to be readjusted, stored in a program databank (12), and retrieved for the heat treatment of metal workpieces in industrial furnaces (5)(FIG. 1).
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: May 8, 2012
    Assignee: Ipsen, Inc.
    Inventors: Frank Biester, Thomas Eversmann, Werner Schulte, Jörg Willeke, Regina Wolff
  • Publication number: 20120000315
    Abstract: In a method and a device for controlling vibrations of a metallurgical vessel that occur while gas is being injected into liquid molten metal located in the metallurgical vessel, a certain total amount of gas per unit of time is injected into the liquid molten metal, and the total amount of gas being is injected into the liquid molten metal through a number of individual nozzles in the metallurgical vessel, measured values correlating with the vibrations of the metallurgical vessel occurring are being measured during the injection, wherein while keeping the total amount of gas injected per unit of time largely constant, the amount of gas injected from individual nozzles per unit of time is changed in dependence on the measured values that are measured and correlate with the vibrations of the metallurgical vessel occurring.
    Type: Application
    Filed: November 6, 2009
    Publication date: January 5, 2012
    Inventors: Alexander Fleischanderl, Martin Hiebler, Guenther Staudinger, Peter Wimmer
  • Publication number: 20110283837
    Abstract: In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO2 separation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the CO2 separation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use.
    Type: Application
    Filed: September 29, 2009
    Publication date: November 24, 2011
    Inventors: Robert Millner, Johannes Leopold Schenk, Kurt Wieder
  • Patent number: 7998399
    Abstract: An apparatus is provided for the determination of at least one parameter of a molten metal or a slag layer lying on top of the molten metal. The apparatus has a carrier tube, a measuring head arranged on one end of the carrier tube with a body fixed in the carrier tube. An A/D converter is arranged within the measuring head or the carrier tube, and the A/D converter is connected to at least one sensor arranged in or on the measuring head. The measuring head has a contact piece, which is electrically connected via its contact terminals to the signal output of the A/D converter, and the contact piece is connected to a lance inserted into the carrier tube. No more than two signal lines are arranged within the lance, the signal lines each being connected at one end via a contact terminal of the contact piece to the A/D converter and at an opposite end to a computer or an analysis device.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: August 16, 2011
    Assignee: Heraeus Electro-Nite International N.V.
    Inventors: Francis Dams, Guido Jacobus Neyens
  • Publication number: 20110146447
    Abstract: A method for controlling foamed slag in a stainless melt in an electric arc furnace. Slag level in the electric arc furnace is continuously detected thermographically as a function of time and slag level, and an addition of foaming material is controlled depending on the temperature and temperature gradient.
    Type: Application
    Filed: August 7, 2009
    Publication date: June 23, 2011
    Applicant: SMS Siemag AG
    Inventor: Johann Reichel
  • Publication number: 20110042866
    Abstract: In a method and with a device for preparing process gases (3) for heat treatments of metallic materials/workpieces, the respective process gas (3) is to be fed into at least one treatment chamber (1.1) in an industrial furnace (1) having been practically fully prepared, homogenised and heated, and the method is to be carried out both with newly built and particularly with already existing installations of industrial furnaces (1) with the aid of the device, wherein the process gas (3) is prepared with compression at temperatures uncoupled from the temperature in the treatment chamber (1.1), in a process separate from the heat treatment process in the treatment chamber (1.1), and in a temperature range up to about 1250° C., and is rendered usable for economical and low-emission heat treatment (FIG. 3).
    Type: Application
    Filed: August 25, 2010
    Publication date: February 24, 2011
    Applicant: Ipsen, Inc.
    Inventors: Werner Hendrik Grobler, Peter Haase, Bernd Edenhofer, Jens Bechthold, Thorsten Requardt, Thomas Eversmann
  • Patent number: 7887617
    Abstract: Method and apparatus for determining the ore content and for further treatment of the ore, the ore content of the crushed ore being monitored in the method on-line and the information on the ore content being utilized in the further treatment of the ore.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: February 15, 2011
    Assignee: Mine On-Line Service Oy
    Inventor: Iipo Auranen
  • Patent number: 7790098
    Abstract: A molten metal holding furnace for supplying a constant quantity of the molten metal to a casting machine is composed of a holding chamber having a melt supply port, and a pressurization chamber having an upward melt outlet port. The holding chamber and the pressurization chamber are communicated with each other via an openable/closable first melt flow passage. The pressurization chamber is composed of a outlet section at which the melt outlet port is positioned and a pressurization section positioned on one side closer to the holding chamber. The holding chamber and the outlet section are juxtaposed with the pressurization section interposed therebetween, where the first melt flow passage is formed at a hearth of the pressurization section, and an openable/closable second melt flow passage communicating with the outlet section is formed at a hearth of the pressurization section.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: September 7, 2010
    Assignee: Tounetsu Corporation
    Inventor: Syunji Mochizuki
  • Patent number: 7767136
    Abstract: Apparatus for the combustion of gas exiting from an electric arc furnace where the heat of combustion is used for the preheating of scraps entering the furnace wherein the apparatus has an insertion device for introducing comburent substance into a preheating chamber or loading tunnel for scrap metal where the loding tunnel has an inlet section for scrap metal, a seal section to prevent an uncontrolled entrance of air in the tunnel, a heating section and an unloading section for delivering scrap metal to the furnace. The insertion device for the comburent substance has one or more adjustable openings placed in the loading tunnel, and said apparatus comprises a device or a series of devices.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: August 3, 2010
    Assignee: Techint Compagnia Tecnica Internazionale S.p.A
    Inventors: Paolo Argenta, Silvio Reali, Claudio Lodati, Mauro Bianchi Ferri
  • Publication number: 20100071508
    Abstract: In a method of regulating the output of CO in steel production, oxygen is introduced into a melt to remove carbon present, the actual value of the carbon stream evolved from the melt is determined, the intended value of the evolved carbon stream derived from the amount of oxygen introduced and the carbon content of the melt is calculated, intended and actual values are compared with one another and if the actual value is below the intended value, measures for preventing boiling are undertaken.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 25, 2010
    Inventor: Thomas Matschullat
  • Patent number: 7648558
    Abstract: Methods for treating aluminum in a furnace. An aluminum charge is introduced into a furnace and melted with heat from at least one burner. The burner is supplied with at least one oxidizer and at least one fuel. The oxidizer is made up of at least 10% oxygen by volume. The concentration of a first gas is measured in the furnace atmosphere or in a flue gas exiting the furnace. The oxidation of the molten aluminum is then reduced by holding the flow rate of the oxidizer steady while varying the flow rate of the fuel, according to the concentration of a second gas in the furnace or in the flue gas exiting the furnace. The concentration of the second gas is determined by comparing the measured species concentration and the intrinsic concentration which would be present absent the aluminum charge.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: January 19, 2010
    Assignee: L'Air Liquide Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Bruno Allemand, Jean-Claude Vuillermoz
  • Publication number: 20090320962
    Abstract: A carburizing apparatus that performs a vacuum carburizing treatment with respect to an object includes: a carburizing furnace that contains the object; a gas supply apparatus that supplies a carburizing gas to the carburizing furnace; a light emitting device that emits light by using an in-furnace gas inside of the carburizing furnace which is supplied with the carburizing gas; a light receiving device that receives light emitted from the light emitting device; and a processing device that calculates the composition of the in-furnace gas based on the light receiving result of the light receiving device.
    Type: Application
    Filed: February 14, 2008
    Publication date: December 31, 2009
    Inventors: Hiroshi Nakai, Takashi Nakabayashi
  • Publication number: 20090314388
    Abstract: A method and a device for the heat treatment of metal materials in an industrial furnace involves a heating chamber having a treatment chamber and a quenching chamber utilizing inert gas and reaction gas.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 24, 2009
    Inventors: Bernd Edenhofer, Hendrik Grobler, Peter Haase
  • Publication number: 20090289398
    Abstract: Equipment for thermochemical treatment of steels and alloys in gaseous mediums with automatic control includes a heating furnace with/without a muffle, a process gas catalyst impact block located in the furnace, a mechanism for supply, mixing, proportioning and extraction of process gases and a device of indirect monitoring and control of the nitrogen potential in the furnace atmosphere. The device of indirect monitoring and control of the nitrogen potential in the furnace atmosphere is an oxygen sensor, a secondary transducer with indication of the nitrogen potential in weight units of nitrogen content in iron and an actuator, while the process gas catalyst impact block is located in the furnace on the process gas supply line. The technical result achieved is that reliability and stability of processes are significantly increased, as well as the period of nitriding is reduced due to integrated process automation that is available.
    Type: Application
    Filed: August 4, 2009
    Publication date: November 26, 2009
    Applicants: 'Solnechnogorsky Zavod Termicheskogo Oborudovania ' Nakal '
    Inventor: VLADIMIR YAKOVLEVICH SYROPYATOV
  • Patent number: 7560669
    Abstract: A method of thermal treatment of components. The optimum thermal amplitude of the components at which the phase transformation kinetics of the components is maximum is determined by subjecting samples of the components to cyclic thermal processing at various thermal amplitudes by maintaining the upper temperature constant and varying the lower temperature. A thermal amplitude which is higher than the optimum thermal amplitude is selected. The components are subjected to cyclic thermal processing at the thermal amplitude selected above to achieve near uniform phase transformation kinetics of the components across their crosssection. The components are cooled down to room temperature to obtain components with near uniform microstructure and properties.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: July 14, 2009
    Assignee: Tata Consulting Services Ltd.
    Inventors: Satyam Suraj Sahay, Karthik Krishnan
  • Patent number: 7534313
    Abstract: Systems and methods for determining an ammonia content of an ammonia-based atmosphere. The systems and methods provide a measurement vessel (70). The systems and methods provide an ammonia-based atmosphere conveyed into the measurement vessel (70). The systems and methods provide water conveyed into the measurement vessel (70), with the water causing dissociation of the ammonia from the atmosphere within the measurement vessel (70). The systems and methods measure a flow rate of water into the measurement vessel (70) during the dissociation. The systems and methods determine the ammonia content in the atmosphere based, at least in part, upon the flow rate of water.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: May 19, 2009
    Inventor: Vytas Braziunas
  • Patent number: 7468090
    Abstract: A method for tapping of steel from a steelmaking furnace to a receiving vessel comprising the steps of providing a steelmaking furnace comprising a tapping hole, and means for angular positioning of the furnace to vary the depth of molten steel and slag contained in the furnace above the tapping hole; determining a guidance profile for the tapping of the furnace, the guidance profile including the parameters of minimum tapping angle, maximum tapping angle, and time of rotation from the minimum tapping angle to the maximum tapping angle; performing an initial angular rotation of the furnace from an initial position to the minimum tapping angle; beginning the transfer of molten steel from the furnace through the tapping hole to a receiving vessel; rotating the furnace to the maximum tapping angle in accordance with the guidance profile; and ceasing the flow of molten steel through the tapping hole.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: December 23, 2008
    Assignee: Nupro Corporation
    Inventors: Frank L. Kemeny, David I. Walker, Jeremy A. T. Jones
  • Publication number: 20080303195
    Abstract: A molten metal holding furnace for supplying a constant quantity of the molten metal to a casting machine is composed of a holding chamber having a melt supply port, and a pressurization chamber having an upward melt outlet port. The holding chamber and the pressurization chamber are communicated with each other via an openable/closable first melt flow passage. The pressurization chamber is composed of a outlet section at which the melt outlet port is positioned and a pressurization section positioned on one side closer to the holding chamber. The holding chamber and the outlet section are juxtaposed with the pressurization section interposed therebetween, where the first melt flow passage is formed at a hearth of the pressurization section, and an openable/closable second melt flow passage communicating with the outlet section is formed at a hearth of the pressurization section.
    Type: Application
    Filed: November 14, 2005
    Publication date: December 11, 2008
    Applicant: TOUNETSU CO., LTD.
    Inventors: Syunji Mochizuki, Kouichi Murakami
  • Patent number: 7354491
    Abstract: A method and apparatus (5) for simulating and analyzing industrial thermal processes, including industrial heat-treatment, processes, melting, solidification, quenching and the like, used in the manufacture of metals, alloys and metal matrix composite components. The apparatus (5) includes an optional environmental chamber (10) used for situations where testing room conditions are too hot or too cold and would thus interfere with operation of the apparatus (5) without such chamber (10). The apparatus (5) includes a multifunctional excitation coil (40) that serves the function of the omitted environmental chamber (10). The apparatus (5) also includes one or more high frequency resonant inverters (15) and a cooling means (20). The apparatus (5) integrates melting and thermal processing capabilities with a thermal analyzer and a control system.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: April 8, 2008
    Inventors: Jerzy H. Sokolowski, Witold T. Kierkus, Marcin Stanislaw Kasprzak, Wojciech Jan Kasprzak
  • Patent number: 7255828
    Abstract: A method and apparatus for performing electromagnetic treatment on engineering materials and products and for improving processing technologies and service characteristics of the materials. The apparatus integrates electromagnetic treatment with a thermal analyzer and a control system. The apparatus allows for precise control of the operating parameters of an electromagnetic treatment process in order to render significant improvement in the materials and products metallurgical characteristics.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 14, 2007
    Inventors: Marcin Stanislaw Kasprzak, Wojciech Kasprzak, Jerzy H. Sokolowski
  • Patent number: 6969416
    Abstract: A method of controlling slag characteristics in an electric arc furnace control is disclosed. The furnace has inputs including oxygen supply and carbon supply. The method of controlling slag characteristics includes introducing a charge to be melted into the furnace, melting at least a portion of the charge to produce a melt, and introducing oxygen and carbon into the melt to enhance formation of a slag having slag conditions including a slag height and a slag coverage. To better control the slag characteristics, the slag is modeled and the inputs are controlled to maximize the energy transferred from the electrode to the slag.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: November 29, 2005
    Assignee: American Air Liquide, Inc.
    Inventor: Victor Saucedo
  • Patent number: 6846366
    Abstract: There is provided an economical carburizing method and carburization apparatus capable of carrying out carburizing treatment with a quality as high as that in a normal case and a high reproducibility even if carburizing conditions differ from those in a normal case. A carburization apparatus for carrying out carburization in an atmosphere gas containing not more than 30% by volume of carbon monoxide under a pressure of 13 to 4,000 Pa has a carburizing chamber 3 for housing an object 4 to be treated; an oxygen sensor 20 for measuring an oxygen concentration in the atmosphere gas in the carburizing chamber 3 during carburization; and a mass flow controller 5 for adjusting a composition of the atmosphere gas in the carburizing chamber 3 according to a measurement result by the oxygen sensor 20.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: January 25, 2005
    Assignee: Oriental Engineering Co., Ltd.
    Inventors: Kazuki Kawata, Hatsuo Sato, Shigeta Asai, Yoshiyuki Sekiya
  • Patent number: 6843957
    Abstract: This invention provides methods of treatment for work products of materials such as steel, bronze, plastic, etc. and particularly welded steel bodies by pulse impact energy, preferably ultrasonic, to relax fatigue and aging and extend expectant life. The treatment may occur (a) at original production, (b) during the active life period for maintenance or (c) after failure in a repair stage. The ultrasonic treatment improves the work product strength. In welded products residual stress patterns near the weld sites are relaxed and micro-stress defects such as voids and unusual grain boundaries are reduced. The basic method steps are non-destructive in nature, inducing interior pulse compression waves with ultrasonic transducers and accessory tools impacting an external product surface with enough impulse energy to heat and temporarily plasticize the metal interior and relax stresses.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 18, 2005
    Assignee: U.I.T., L.L.C.
    Inventor: Efim S. Statnikov
  • Publication number: 20040195737
    Abstract: Method and device for the heat treatment of substrates, wherein the substrates are positioned in the vicinity of a heated, essentially flat furnace body extending over the surface of the substrate. In order to provide a reproducible treatment when treating a number of substrates successively, the temperature of the furnace body is measured so close to the surface adjacent to the substrate that the withdrawal of heat from the furnace body by the substrate can be detected. The introduction of each substrate takes place at a point in time when the temperature measured in this way is, within certain limits, equal to a desired initial treatment temperature Ttrig.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 7, 2004
    Inventors: Arjen Storm, Ronald Bast, Vladimir Ivanovich Kuznetsov, Jan Zinger
  • Patent number: 6783570
    Abstract: The present invention provides a possibility to evaluate cooling curves recorded in near-eutectic cast iron melts. The curves are evaluated by generated in the melt in the center of the sample to the melt as a function of time. This information is then used to identify the part of the centrally recorded cooling curve that can be used as a basis for determining the amount of structure-modifying agent that must be added to produce compacted graphite cast iron, and/or spheroidal graphite cast iron, and to identify the part of said curve that is associated with formation of primary austenite.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: August 31, 2004
    Assignee: SinterCast AB
    Inventors: Conny Andersson, Patrik Popelar, Tom Schroeder
  • Patent number: 6767382
    Abstract: An apparatus for separating molten aluminium from a mixture of molten aluminium and aluminium dross includes a table for supporting an insulated crucible containing the mixture of molten aluminium and aluminium dross. A rotatable frame supports a plurality of tines which can be lowered into the mixture in the crucible for stirring the mixture. Vibration means are provided enabling simultaneous vibration of the crucible and stirring of the mixture. The tines cuts through the dross in a shearing action gently rolling the dross, mixing and tumbling it and causing the droplets of aluminium to coalesce. The aluminium droplets and particles in the dross coalesce to form larger droplets and gradually sink to the base of the crucible. A screening means is disposed to substantially surround the crucible when it is supported by the table, which includes a door to both allow and prevent access to the crucible.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: July 27, 2004
    Assignee: Mawar Malaysian Limited
    Inventors: Andreas Stratigos, Brendan O'Neill
  • Publication number: 20040108630
    Abstract: A method and apparatus for performing electromagnetic treatment on engineering materials and products and for improving processing technologies and service characteristics of the materials. The apparatus integrates electromagnetic treatment with a thermal analyzer and a control system. The apparatus allows for precise control of the operating parameters of an electromagnetic treatment process in order to render significant improvement in the materials and products metallurgical characteristics.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 10, 2004
    Inventors: Marcin Stanislaw Kasprzak, Wojciech Kasprzak, Jerzy H. Sokolowski
  • Patent number: 6736876
    Abstract: A fluidized bed reduction reactor (100) for supplying a reduced iron to a melter-gasifier (1) of a smelting reduction system includes an exhaust gas supply unit (3) for supplying an exhaust gas to a reduction gas supply tube (4) interconnecting the melter-gasifier (1) and fluidized bed reduction furnaces (20, 30, 40) when the pressure of the reduction gas in each fluidized bed reduction furnace radically decreases with the occurrence of pressure peak in the melter-gasifier (1). The fluidized bed reduction reactors further include iron ore flow blockage prevention units for directly bypassing some of the reduction gas from each iron ore discharge tube (33, 43) disposed between the neighboring furnaces to the scrubber (50) when the inner pressure of the melter-gasifier (1) radically increases with the occurrence of pressure peak, and a backup gas supply unit supplying a backup nitrogen gas to the bottom of each fluidized bed reduction furnace when a nozzle of a distribution plate (24, 34, 44) is clogged.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 18, 2004
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Myoung-Kyun Shin, Jun-Hyuk Lee, Sun-Kwang Jeong, Nag-Joon Choi, Hang-Goo Kim, Heung-Won Kang
  • Publication number: 20040089381
    Abstract: A method of artificially aging an aluminum alloy product to achieve a property in the product having the steps of aging the product to achieve the property by heating the product over an aging period, the aging period including a time period where the product is in an underaged state, and terminating the heating when the property is achieved according to a mathematical formula. The property is calculated as a function of time and product temperature measured over the aging period. Calculation of the property includes integration of the thermal effects on the product over the entire aging period including during the time period of underaged product state.
    Type: Application
    Filed: November 13, 2002
    Publication date: May 13, 2004
    Inventors: William D. Bennon, Vivek M. Sample, Dhruba J. Chakrabarti
  • Patent number: 6669754
    Abstract: A description is given of a method of optimizing the design and operation of a reduction process for iron-containing charge materials (3), preferably in lump form, in a reduction shaft (1) to which reduction gas (9) is fed, for example from a fusion gasifier (6), with a reduced product (13), for example iron sponge, being taken from the reduction shaft (1) for the production of liquid pig iron or liquid primary steel products, in which method the reduction process is described by means of a mathematical-physical-chemical process model, the reduction shaft (1) is modelled multi-dimensionally, in particular three-dimensionally, and the process model is numerically evaluated and the results of the evaluation, obtained as multi-dimensional, in particular spatial, distributions of physical or chemical variables, are taken into account for the reduction process. This allows the reduction process to be quantitatively assessed in the entire reduction shaft and, as a result, the reduction process can be optimized.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: December 30, 2003
    Assignee: Deutsche Voest-Alpine Industrieanlagenbau GmbH
    Inventors: Helmut Zeisel, Georg Aichinger, Johann Wurm, Hermann Druckenthaner, Heinz Engl, Andrea Schatz, Gerald Gökler
  • Patent number: 6660220
    Abstract: The invention is directed to a dynamic control system that maintains an inert gas feed at a constant target gas flow rate sufficient to prevent or reduce alumina or alloy plugging within a slide gate discharge opening. The dynamic control system includes a gas feed line extending between an inert gas supply and the slide gate discharge passageway, a gas flow regulator, a pressure gauge; and a gas feed flow control that detects an amount of incoming inert gas lost through leaks in the system and adjusts the gas flow regulator in response to the detected amount of incoming gas flow loss so that the adjusted incoming gas feed continues to deliver the target inert gas flow rate to the discharge passageway.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 9, 2003
    Assignee: ISG Technologies Inc.
    Inventor: Bruce R. Forman
  • Patent number: 6656414
    Abstract: A device for continuously measuring the temperature in pelletizing furnaces basically comprised of a plurality of temperature detectors (1, 2) disposed at fixed sites on the grate car (10) that follow the latter along the furnace and inform continuously and instantaneously the actual burning temperature of the product at the detected site through data collectors and measuring units; said data collectors being enclosed in housings (20) which also are attached to the grate car (10) in order to follow the latter while it moves through the interior of the furnace.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: December 2, 2003
    Assignee: Companhia Vale Do Rion Doce
    Inventors: Claudemir Chateaubriand De Souza, Noboru Yamane
  • Patent number: 6607577
    Abstract: A method and computer program for determining the amounts of desulphurizing reagents required to reduce the sulphur content in hot metal to meet a specified aim concentration. The determination of the amounts of reagents is based on a multivariate statistical model of the process. This model is initially based on a set of representative data from the process including all process parameters for which data are available. These parameters include chemistry-type variables and variables representing the state of operation of the desulphurization process. The use of a plurality of process and chemistry variables provides a more advantageous determination of the reagent quantities. Also, the method includes an adaptation scheme whereby new data are used to automatically update the predictive model so that the optimality of the model is maintained. Other features of the system include optimal handling of missing data, and data and model validation schemes.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: August 19, 2003
    Assignee: Dofasco Inc.
    Inventors: Vit Vaculik, Shannon L. Quinn, Michael S. Dudzic
  • Publication number: 20030131912
    Abstract: The invention relates to a method and apparatus for controlling the decarburization of steel components in a furnace during heat treating processes. The concentration of CO2 and/or CO in the furnace is monitored by an analyzer. Responsive to a signal from the analyzer indicating an elevated concentration of CO2 and/or CO, a gas injector injects inert gas into the furnace at a flow rate of at least about 2 renewals per hour.
    Type: Application
    Filed: February 4, 2000
    Publication date: July 17, 2003
    Inventors: Yannick Rancon, Hunter Spoon
  • Patent number: 6591215
    Abstract: Systems and methods monitor the activity of carbon in a heat treating atmosphere, e.g., where a two phase region is desired for spherodize annealing. The systems and methods generate a computed activity of carbon value for the gas atmosphere as a function of temperature, partial pressure of oxygen, and carbon monoxide content of the gas atmosphere, and without determining a carbon dioxide content of the gas atmosphere. The systems and methods can make use of the computed activity of carbon value, e.g., to control the gas atmosphere.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: July 8, 2003
    Assignee: Furnace Control Corp.
    Inventors: Robert N Blumenthal, Andreas T Melville
  • Patent number: 6576039
    Abstract: A method and apparatus is disclosed to improve the metal yield by adjusting the tilt angle of a tilting vessel having a submerged tap hole. The tilt angle is adjusted in response to parameters inherent in the pouring process, i.e. the proximity of the vessel contents to the vessel lip, the age of the tap hole, the liquid head over the tap hole, etc. Additionally, methods are disclosed to enhance the metal yield by advancing or moving back the furnace without knowledge of the tilt angle. Moreover, such methods and apparatus can be implemented through the use of computer based algorithms. The methods can also be used to archive pouring parameter information for future uses such as training and reviewing.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 10, 2003
    Assignee: Tetron, Inc.
    Inventors: Robert J. Koffron, Jeffrey Jacobs