Patents Assigned to Posco
  • High-manganese wear resistant steel having excellent weldability and method for manufacturing same
    Patent number: 9945014
    Abstract: A high-manganese wear-resistant steel having excellent weldability comprises 5 to 15 wt % of Mn, 16?33.5C+Mn?30 of C, 0.05 to 1.0 wt % of Si, and a balance of Fe and other inevitable impurities. The microstructure thereof includes martensite as a major component, and 5% to 40% of residual austenite by area fraction.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: April 17, 2018
    Assignee: POSCO
    Inventors: Soon-Gi Lee, In-Shik Suh, In-Gyu Park, Hong-Ju Lee
  • Zinc-plated steel sheet for hot pressing having outstanding surface characteristics, hot-pressed moulded parts obtained using the same, and a production method for the same
    Patent number: 9945020
    Abstract: Provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, an aluminum-rich layer containing at least 30 wt. % of aluminum formed on the surface diffusion layer, and a zinc plating layer formed on the aluminum-rich layer. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment. Cracking in the steel foundation plate during hot press molding is prevented.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: April 17, 2018
    Assignee: POSCO
    Inventors: Il-Ryoung Sohn, Jong-Sang Kim, Joong-Chul Park, Yeol-Rae Cho, Jin-Keun Oh, Han-Gu Cho, Bong-Hoon Chung, Jong-Seog Lee
  • COIL ASSEMBLY FOR INDUCTION HEATING DEVICE AND INDUCTION HEATING DEVICE COMPRISING SAME
    Publication number: 20180098388
    Abstract: A coil assembly for an induction heating device comprises: a first coil part which has, on one surface thereof, a first cooling-pipe insertion groove indented to the inside thereof; a first cooling pipe coupled to the first cooling-pipe insertion groove so that a part of the outer surface can be exposed; a second coil part which is disposed to be opposite to one surface of the first coil part provided with the first cooling-pipe insertion groove and has, on one surface opposite to the one surface of the first coil part, a second cooling-pipe insertion groove indented to the inside thereof; and a second cooling pipe coupled to the second cooling-pipe insertion groove so that a part of the outer surface can be exposed.
    Type: Application
    Filed: December 4, 2015
    Publication date: April 5, 2018
    Applicants: POSCO, PSTEK CO., LTD.
    Inventors: Hee-Tae JEONG, Byoung-Gee SUNG, Sang-Hyeon LEE, Hwan-Jin SUNG, Hwan-Ho SEONG
  • Fixed-type electric furnace and molten steel production method
    Patent number: 9932649
    Abstract: Provided are a fixed-type electric furnace enabling continuous operation which allows melting without the interruption of power supply and tapping in a fixed state, and a fixed-type electric furnace and a molten steel production method using same. The fixed-type electric furnace comprises: a preheating furnace which is disposed on the side of a melting furnace and preheats an iron source (scrap) using exhaust gas from the melting furnace; a supply means for supplying the iron source, which has been preheated in the preheating furnace, to the melting furnace; the melting furnace comprising electrodes for melting the preheated iron source; and a fixed-type discharge means for discharging molten steel which has been melted in the melting furnace, wherein the preheating furnace is integrally connected to the melting furnace.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: April 3, 2018
    Assignee: POSCO
    Inventors: Baek Lee, Geon Shin, Ji-Un Oh
  • Molten steel treatment apparatus and molten steel treatment method
    Patent number: 9927177
    Abstract: Provided are a molten steel treatment apparatus and a molten steel treatment method capable of quickly measuring an inclusion adhesion state inside a nozzle during an operation. The molten steel treatment apparatus includes a container, a nozzle equipped in a molten steel tap hole of the container, a liner disposed on a portion of an inner circumferential surface of the nozzle and formed of an ion-conductive material, a power supply for applying electric power to the molten steel and the liner, and a measuring unit for measuring a voltage value or a current value between the molten steel and the liner. The molten steel treatment method includes measuring a voltage value or current value between the molten steel and the liner; and determining a thickness of an inclusion adhering to an interface between the molten steel and the liner by using the voltage value or the current value.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: March 27, 2018
    Assignee: POSCO
    Inventor: Wook Kim
  • Smart Factory Platform For Processing Data Obtained In Continuous Process
    Publication number: 20180059630
    Abstract: Disclosed is a smart factory platform for processing data obtained in a continuous process including a first process and a second process following the first process. The smart factory platform includes a distributed parallel processing system including at least one processing unit that generates mapping data by mapping a process identification (ID) to collection data collected from the continuous process and sorts the mapping data to generate sorting data, the process ID defining a process where the collection data occurs and the sorting data being generated for association processing between pieces of collection data collected from different processes; and a big data analysis system storing the sorting data with respect to the process ID.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 1, 2018
    Applicant: POSCO ICT CO., LTD.
    Inventors: Won Mo YANG, Hyun Woo YU, Eun Kgu KIM, Man Jin PARK, Jang Soo JUNG, Tong Ki KIM, Young Lea LEE, Seong Cheol PARK, Sung Yong LEE, Kyung Ho KU, Seung Hyun SEO, Nam Geon YANG, Woo Kyum KIM, Jin Woong KANG, Seo Yeon HWANG, In LEE
  • Steel wire rod having high strength and ductility and method for producing same
    Patent number: 9896750
    Abstract: There are provided a steel wire rod for ultra-high-strength parts such as automobile engine bolts or structural mechanical parts, and a method for producing the steel wire rod. The steel wire rod having high strength and ductility includes, by wt %, carbon (C): 0.7% to 0.9%, manganese (Mn): 13% to 17%, copper (Cu): 1% to 3%, and the balance of iron (Fe) and inevitable impurities.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: February 20, 2018
    Assignee: POSCO
    Inventors: You-Hwan Lee, Chul-Min Bae, Geun-Soo Ryu
  • Nickel-M-alumina xerogel catalyst, method for preparing the same, and method for preparing methane using the catalyst
    Patent number: 9878961
    Abstract: A nickel-M-alumina hybrid xerogel catalyst for preparing methane, wherein the metal M is at least one element selected from the group consisting of Fe, Co, Ni, Ce, La, Mo, Cs, Y, and Mg, a method for preparing the catalyst and a method for preparing methane using the catalyst are provided. The catalyst has strong resistance against a high-temperature sintering reaction and deposition of carbon species, and can effectively improve a conversion ratio of carbon monoxide and selectivity to methane.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: January 30, 2018
    Assignee: POSCO
    Inventors: Hyo Jun Lim, Chang Dae Byun, In Kyu Song, Dong Jun Koh, Sun Hwan Hwang, Jeong Gil Seo
  • Method for preparing continuous carbon fiber-reinforced thermoplastic prepreg
    Patent number: 9873242
    Abstract: The present invention relates to a method for preparing a continuous carbon fiber-reinforced thermoplastic prepreg, and more specifically, to a method for preparing a continuous carbon fiber-reinforced thermoplastic semi-prepreg or prepreg, comprising the steps of: providing a plurality of carbon fibers having an increased width; preparing a layered product by arranging a thermoplastic film on at least a part of the upper and lower portions of the carbon fibers having an increased width; and preparing a joined product by joining the thermoplastic film and the carbon fibers comprising the layered body.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: January 23, 2018
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Il-Joon Bae, Ik-Pyo Hong, Sei-Min Park, Sung-Young Lee
  • Method for manufacturing composite ceramic material
    Patent number: 9871259
    Abstract: Provided is a method of making a composite ceramic material for a fuel cell. The composite ceramic material for the fuel cell forms a cored structure where perovskite ceramic particles having a small particle diameter surround lanthanum cobaltite particles having a large particle diameter. Lanthanum cobaltite is added as a starting material in a process of synthesizing the perovskite ceramic particles. The composite ceramic material for the fuel cell made according to this method improves an electric connection characteristic between a separation plate and a polar plate of the fuel cell, and is chemically and mechanically stable.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: January 16, 2018
    Assignee: POSCO
    Inventors: Sang-Moo Han, Do-Hyeong Kim, Joong-Hwan Jun
  • Method for manufacturing duplex stainless steel sheet having reduced inclusions
    Patent number: 9869002
    Abstract: There is provided a method for manufacturing a duplex stainless steel sheet having reduced inclusions through argon oxygen decarburization (AOD), ladle treatment (LT), and twin roll strip casting. The method includes deoxidizing molten steel using silicon (Si) during the AOD, wherein the molten steel has a silicon (Si) content of 0.55 wt % to 0.75 wt % at the end of the AOD.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 16, 2018
    Assignee: POSCO
    Inventors: Sung Jin Park, Man Jin Ha, Dae Sung Lee
  • Steel pipe socket and method of connecting steel pipe pile and steel pipe column using the same
    Patent number: 9863113
    Abstract: A steel pipe pile and a steel pipe column is connected using a steel pipe socket. The connection method may include preparing the steel pipe socket including a socket supporting portion that covers an upper end surface of the steel pipe pile, and inserting a plurality of socket insertion portions extended downward from the socket supporting portion and having a plurality of socket grooves at a lower end portion thereof and a plurality of fastening members installed on the socket supporting portion. The method may also include inserting the socket grooves of the steel pipe socket into an upper end portion of the steel pipe pile and mounting the steel pipe column on the socket supporting portion. The method may further include fastening the steel pipe column and the steel pipe pile using the plurality of fastening members of the socket supporting portion.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: January 9, 2018
    Assignees: POSCO, Research Institute of Industrial Science & Technology
    Inventor: Dae Yong Lee
  • Lance and operation method using the same
    Patent number: 9863014
    Abstract: Provided is a lance and an operation method using the same, in which a suction hole allowing source gas to be injected into a container, in which a reaction gas is generated, is included. The suction hole is formed in a source gas passage where the reaction gas is introduced into the passage. Thus the temperature of the gas injected into the container may be easily increased without using any separate heating device, and secondary combustion efficiency may be increased. In addition, the gas sprayed at a high temperature is provided, and thus additional heat may be supplied into the container. Thus, excessive use of fuel used to increase the temperature of the container may be avoided, and thus operation costs may be reduced and operation efficiency and productivity may be increased.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: January 9, 2018
    Assignee: POSCO
    Inventors: Chang Su Ha, Hyeon Soo Choi
  • ZINC ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT WELDABILITY AND PROCESSED-PART CORROSION RESISTANCE AND METHOD OF MANUFACTURING SAME
    Publication number: 20180002797
    Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.
    Type: Application
    Filed: December 24, 2015
    Publication date: January 4, 2018
    Applicants: POSCO, POSCO
    Inventors: Min-Suk OH, Sang-Heon KIM, Tae-Chul KIM, Jong-Sang KIM, Hyun-Chu YUN, Bong-Hwan YOO, Il-Ryoung SOHN
  • HIGH STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT SURFACE QUALITIES, PLATING ADHESION, AND FORMABILITY, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20180002790
    Abstract: A high strength galvanized steel sheet having excellent surface qualities, plating adhesion, and formability is provided, wherein a galvanized layer is formed on a cold-rolled steel sheet comprising 0.1-0.3 wt % of C, 1-2.5 wt % of Si, 2.5-8 wt % of Mn, 0.001-0.5 wt % of sol. Al, at most 0.04 wt % of P, at most 0.015 wt % of S, at most 0.02 wt % of N (excluding 0 wt %), 0.1-0.7 wt % of Cr, at most 0.1 wt % of Mo, (48/14)*[N] to 0.1 wt % of Ti, 0.005-0.5 wt % of Ni, 0.01-0.07 wt % of Sb, at most 0.1 wt % of Nb, and at most 0.005 wt % of B, with the remainder being Fe and other inevitable impurities.
    Type: Application
    Filed: December 23, 2015
    Publication date: January 4, 2018
    Applicant: POSCO
    Inventors: Myung-Soo KIM, Ki-Cheol KANG, Jong-Ho KIM
  • High carbon hot rolled steel sheet having excellent material uniformity and method for manufacturing the same
    Patent number: 9856550
    Abstract: The present invention relates to a high carbon hot rolled steel sheet having excellent material uniformity and a method for manufacturing the same, in which components and structure of the steel are precisely controlled and manufacturing conditions are adjusted to achieve excellence in material uniformity among hot rolled structures, thereby improving the dimensional precision of parts after formation, preventing defects during processing, and obtaining uniform structures and hardness distribution even after a final heat treatment process.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 2, 2018
    Assignee: POSCO
    Inventors: Young-Roc Im, Jea-Chun Jeon, Byoung-Ho Lee
  • Surface treatment composition for galvanized steel sheet, surface treatment method for galvanized steel sheet, and galvanised steel sheet
    Patent number: 9856380
    Abstract: A surface treatment composition for a galvanized steel sheet containing, based on 100 parts by weight of the total solution, 3.0 to 25.0 parts by weight of a silane compound, 0.5 to 5.0 parts by weight of a molybdenum compound, 0.5 to 5.0 parts by weight of a vanadium compound, 0.1 to 3.0 parts by weight of a nickel compound, 0.05 to 1.0 parts by weight of a copper compound, and a remainder of solvent, a surface treatment method for a galvanized steel sheet using the surface treatment composition, and a surface-treated galvanized steel sheet, are provided. Corrosion resistance, blackening resistance, warm water resistance, and conductivity are secured free from concerns regarding the installation of additional equipment for treating chromium, increased manufacturing costs, and environmental pollution.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: January 2, 2018
    Assignee: POSCO
    Inventors: Hyun-Tae Kim, Young-Sool Jin
  • Ferritic lightweight high-strength steel sheet having excellent stiffness and ductility, and method of manufacturing the same
    Patent number: 9856542
    Abstract: Provided is a ferritic lightweight high-strength steel sheet having excellent stiffness and ductility and a method of manufacturing the same. The steel sheet including 0.02 wt % to 0.1 wt % of carbon (C), 4 wt % to 15 wt % of manganese (Mn), 4 wt % to 10 wt % of aluminum (Al), 2.0 wt % or less (excluding 0) of silicon (Si), 0.01 wt % to 0.3 wt % of titanium (Ti), 0.005 wt % to 0.2 wt % of antimony (Sb), and iron (Fe) as well as unavoidable impurities as a remainder, and having a value of 0.25×Ti/C ranging from 0.17 to 1.0 and a value of Mn/Al×Log(C×Ti×10000) ranging from 1.0 to 10.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: January 2, 2018
    Assignee: POSCO
    Inventors: Jai-Hyun Kwak, Kyoo-Young Lee, Kwang-Geun Chin
  • Transportation device and transportation system using same
    Patent number: 9856120
    Abstract: Provided are a transportation device for transporting heavy plate-shaped cargoes such as thick plate products, and a transportation system using the transportation device. The transportation device may include: a device body unit; a device moving unit provided on the device body unit to move the transportation device; and a cargo loading unit provided on the device body unit for self-loading cargo. The transportation device is capable of rapidly loading and transporting plate-shaped heavy objects such as thick plate products of an iron mill without using additional lifting/unloading apparatuses and heavy pallets (cassettes) for markedly decreasing the total transportation (distribution) time necessary for lifting, transportation, and unloading of cargo, providing efficient transportation environments, improving productivity, and decreasing costs.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 2, 2018
    Assignees: POSCO, KWANGYANG MARINE CO., LTD., KILWOO CORPORATION
    Inventors: Tae-Han Kim, Kyoung-Hee Lee, Jong-Won Yoon
  • Separator for fuel cell and fuel cell including the same
    Patent number: 9847546
    Abstract: There are provided a separator for a fuel cell and a fuel cell including the same able to enhance the horizontal distribution of fuel or an oxidizing agent and secure an effective flow area, the separator including: a separator body; a first intake manifold provided at one end portion of the separator body; a second intake manifold provided at the other end portion of the separator body to be partitioned from the first intake manifold; a first exhaust manifold provided outwardly of the second intake manifold at the other end portion of the separator body; and a second exhaust manifold provided outwardly of the first intake manifold at one end portion of the separator body to be partitioned from the first exhaust manifold.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: December 19, 2017
    Assignee: POSCO
    Inventors: Choong-Mo Yang, Seung-Goo Kim