Patents Assigned to Posco
  • Plated steel sheet for hot press forming having excellent impact property, hot press formed part, and manufacturing method thereof
    Patent number: 11274357
    Abstract: Provided is a plated steel sheet for hot press forming, having an excellent impact property, including: a base steel sheet comprising, by wt %, 0.15-0.4% of C, 0.05-1.0% of Si, 0.6-3.0% of Mn, 0.001-0.05% of P, 0.0001-0.02% of S, 0.01-0.1% of Al, 0.001-0.02% of N, 0.001-0.01% of B, 0.01-0.5% of Cr, 0.01-0.05% of Ti, and the balance of Fe and inevitable impurities; and an Al—Si plated layer formed on the surface of the base steel sheet. A thickness of a carbon-depleted layer in a surface layer part of the base steel sheet is 5 ?m or less. The surface layer part means a region from the surface of the base steel sheet to a depth of 200 ?m, and the carbon-depleted layer means a region which the carbon content is 50% or less of an average carbon amount (C0) of the base steel sheet.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: March 15, 2022
    Assignee: POSCO
    Inventors: Seong-Woo Kim, Jin-Keun Oh, Yeol-Rae Cho
  • High-strength steel having excellent fracture initiation resistance and fracture propagation arrestability at low temperature and method of manufacturing the same
    Patent number: 11268175
    Abstract: An aspect of the present invention relates to a high-strength steel, having excellent fracture initiation resistance and fracture propagation arrestability at low temperature.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 8, 2022
    Assignee: POSCO
    Inventors: Kyung-Keun Um, Woo-Gyeom Kim, Woo-Yeol Cha, Jin-Woo Chae
  • Magnesium alloy sheet and method for manufacturing same
    Patent number: 11268178
    Abstract: An exemplary embodiment of the present invention relates to a magnesium alloy sheet and a manufacturing method thereof. The exemplary embodiment of the present invention provides a magnesium alloy sheet including 0.5 to 2.1 wt % of Al, 0.5 to 1.5 wt % of Zn, 0.1 to 1.0 wt % of Ca, and a balance of Mg and inevitable impurities, with respect to a total of 100 wt % of the magnesium alloy sheet.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 8, 2022
    Assignee: POSCO
    Inventors: Jun Ho Park, Sang Hyun Kim, Jae Joong Kim, Oh-Duck Kwon, Hyun Bom Lee
  • Antimicrobial adhesive protein, antimicrobial nanoparticle, antimicrobial composition comprising same nanoparticle, and preparation method for same composition
    Patent number: 11267851
    Abstract: An antimicrobial adhesive protein, an antimicrobial nanoparticle, an antimicrobial composition comprising the same nanoparticle, and a preparation method for the same composition are described and, more particularly, an antimicrobial adhesive protein in which an antibiotic peptide is linked to a mussel adhesive protein, a mussel adhesive protein derivative of which a tyrosine residue within the antimicrobial adhesive protein is modified with a catechol derivative, an antimicrobial nanoparticle including a metal capable of forming a coordinate bond with a derivative of the mussel adhesive protein and having intrinsic antimicrobial activity, an antimicrobial composition comprising the same nanoparticle, and a preparation method for the same composition are described.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: March 8, 2022
    Assignees: POSCO, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Hyung Joon Cha, Yun Kee Jo, Yeonsu Jeong
  • Casting sliding gate
    Patent number: 11260450
    Abstract: Provided is a casting sliding gate including a plurality of plates, and at least a portion of the plates includes carbon fibers and carbide and is capable of suppressing damage due to a thermal shock.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 1, 2022
    Assignee: POSCO
    Inventor: Young Ju Lee
  • STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT COATING ADHESION AND MANUFACTURING METHOD FOR THE SAME
    Publication number: 20220055342
    Abstract: The present invention relates to a steel sheet for a hot press formed member having excellent coating adhesion, and a method for manufacturing the same. A steel sheet for hot press forming according to one aspect of the present invention is an aluminum alloy plated steel sheet, wherein an average Fe content in a plating layer may be 40 wt % or more, and a concentration gradient of a section having a Fe content of 45 wt % to 80 wt % in the plating layer may 7 wt %/?m or less of a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis.
    Type: Application
    Filed: November 2, 2021
    Publication date: February 24, 2022
    Applicant: POSCO
    Inventors: Seong-Woo KIM, Jin-Keun OH, A-Ra CHO, Hyeon-Jeong SHIN
  • Zinc-based plated steel sheet having post-treated coating formed thereon
    Patent number: 11255010
    Abstract: Provided is a zinc-based plated steel sheet having a post-treated coating filmed thereon including: a steel sheet; a zinc plated layer formed on the steel sheet; and a post-treated coating formed on the plated layer, wherein the atomic ratio (O/M) of oxygen (O) to metals (M) contained in the post-treated coating is greater than 2 and less than 20, and a method for post-treating a zinc-based plated steel sheet. According to this, the zinc-based plated steel sheet having the post-treated coating formed thereon has the effects excellent in lubricity, weldability, adhesiveness, film-removing property and paintability. As the method of post-treating a zinc-based plated steel sheet of the present invention employs a simple coating method irrespective of the kind of plating layer, the process is simple and economical and the process operation cost is low.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: February 22, 2022
    Assignee: POSCO
    Inventors: Yeon-Ho Kim, Yung-Keun Kim, Young-Jun Park, Yong-Woon Kim
  • Method for refining magnetic domain of grain-oriented electrical steel plate and device therefor
    Patent number: 11254994
    Abstract: A method for refining a magnetic domain of a grain-oriented electrical steel strip is provided, including a steel strip supporting roll position adjusting step of controlling a position of the steel strip in a vertical direction while supporting the steel strip proceeding along a production line, a laser irradiating step of forming a groove on a surface of the steel strip by irradiating a laser beam onto the surface of the steel strip to melt the steel strip, and a detecting step of detecting a defect in the groove formed on the surface of the steel strip while the steel strip proceeds, so as to be able to detect whether the groove is defective by confirming a machining state of a magnetic domain refined groove formed on the surface of the steel strip in a working process.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: February 22, 2022
    Assignee: POSCO
    Inventors: Gyoo-Taek Lee, Ju Seung Lee, Seong-Cheol Hong
  • Non-oriented electrical steel sheet and manufacturing method therefor
    Patent number: 11254997
    Abstract: An embodiment of the present invention provides a non-oriented electrical steel sheet, including Si at 2.0 to 4.0 wt %, Al at 1.5 wt % or less (excluding 0 wt %), Mn at 1.5 wt % or less (excluding 0 wt %), Cr at 0.01 to 0.5 wt %, V at 0.0080 to 0.015 wt %, C at 0.015 wt % or less (excluding 0 wt %), N at 0.015 wt % or less (excluding 0 wt %), and the remainder including Fe and other impurities unavoidably added thereto. 0.004?([C]+[N])?0.022??[Equation 1] (In Equation 1, [C] and [N] represent a content (wt %) of C and N, respectively.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: February 22, 2022
    Assignee: POSCO
    Inventors: Hunju Lee, Dong Gwan Kim, So Hyun Park, Kyunghan Kim
  • Photovoltaic power generation module
    Patent number: 11251322
    Abstract: Disclosed is a photovoltaic power generation module having a single layer structure in which a pattern glass and a solar cell module are integrated. The disclosed photovoltaic power generation module comprises: a pattern glass comprising a base member, and a pattern member provided thereon in which an optical pattern is formed; a solar cell module provided with a solar cell; a plurality of supportive adhering parts in a pillar shape adhered to the pattern member; and a filler filled between the supportive adhering part and the solar cell module, wherein the pattern glass and the solar cell module are integrated through the supportive adhering parts and the filler, and the height of the supportive adhering parts are configured to be greater than the height of the pattern member so that a gap for forming an air layer between the pattern member and the filler can be provided.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: February 15, 2022
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Sung-Ju Tark, Tae-Won Kim, A-Rong Kim, Kun-Hoon Baek, Jun-Hong Kim
  • Brake disc and manufacturing method therefor
    Patent number: 11248671
    Abstract: In order to achieve lightness and improve hardness of a brake disk, and minimize weight and improve productivity through an improvement of a coupling structure of a disk plate and a hub, provided is a method of manufacturing a brake disk including a disk plate, which provides a friction surface and is formed with a hole at a center, and a hub, which is coupled to the hole formed at the center of the disk plate, the method including: preparing a disk plate; preparing a hub in the form of a flat plate; positioning the hub in the form of the flat plate on one surface of the disk plate; and bonding the disk plate and the hub by an interference fit.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: February 15, 2022
    Assignees: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO
    Inventors: Kwang Soo Park, Sook Hwan Kim
  • Zinc alloy plated steel material having excellent weldability and processed-part corrosion resistance
    Patent number: 11248287
    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: Grant
    Filed: January 27, 2020
    Date of Patent: February 15, 2022
    Assignee: POSCO
    Inventors: Min-Suk Oh, Sang-Heon Kim, Tae-Chul Kim, Jong-Sang Kim, Hyun-Chu Yun, Bong-Hwan Yoo, Il-Ryoung Sohn
  • Non-oriented electrical steel sheet and manufacturing method therefor
    Patent number: 11230745
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the present invention comprises, by weight, 1.0% to 4.0% of Si, 0.001% to 0.01% of Al, 0.002% to 0.009% of S, 0.01% to 0.3% of Mn, 0.001% to 0.004% of N, 0.004% or less (0% exclusive) of C, 0.003% or less (0% exclusive) of Ti, 0.005% to 0.07% of Cu, 0.05% to 0.2% of either or both of Sn and P, and a balance amount of Fe and impurities.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 25, 2022
    Assignee: POSCO
    Inventor: Se Il Lee
  • MANUFACTURING METHOD OF ALUMINUM-BASED ALLOY PLATED STEEL
    Publication number: 20220016870
    Abstract: The present disclosure relates to an aluminum-based plated steel that is provided for vehicles by hot forming, an aluminum-based alloy plated steel manufactured using the same, and method of manufacturing thereof.
    Type: Application
    Filed: September 13, 2021
    Publication date: January 20, 2022
    Applicant: POSCO
    Inventors: Jin-Keun OH, Il-Ryoung SOHN, Seong-Woo KIM, Jeom-Soo SHIN
  • Dephosphorizing flux and method for preparing same
    Patent number: 11225695
    Abstract: Provided is a dephosphorizing flux configured to adjust a phosphorous component contained in molten steel, the dephosphorizing flux includes a main material including BaCO3 and a supplementary material, wherein the supplementary material includes a first material containing either of NaHCO3 or Na2CO3 and a second material containing CaF2. Thus, in accordance with a dephosphorizing flux and a method for preparing the same of the present disclosure, the plugging of a lower blowing nozzle that blows a carrier gas during dephosphorization may be prevented while improving a dephosphorization ratio. In addition, since environment polluting substances are not used as in conventional arts, environment pollution risk may be reduced, and the cost burden due to the facility for pollution prevention and harmful substance management may be alleviated.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: January 18, 2022
    Assignee: POSCO
    Inventors: Woong Hee Han, Chong Tae Ahn, Jun Jeong Beak, Min Ho Song, Soo Chang Kang
  • Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet
    Patent number: 11225700
    Abstract: Provided is an annealing separating agent composition for a grain-oriented electrical steel sheet, a grain-oriented electrical steel sheet and a method for manufacturing a grain-oriented electrical steel sheet. The annealing separating agent composition for a grain-oriented electrical steel sheet according to an embodiment of the present invention contains 30 to 70% by weight of a calcium compound, and the remainder of magnesium oxide or magnesium hydroxide on a solid basis.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: January 18, 2022
    Assignee: POSCO
    Inventors: Min Serk Kwon, Tae Young No, Chang Soo Park, Heon-Jo Choi
  • Hot-rolled coated steel sheet with excellent workability and manufacturing method therefor
    Patent number: 11220731
    Abstract: Provided is a hot-rolled coated steel sheet having a yield point elongation of less than 4% and a manufacturing method for the same. The hot-rolled steel sheet comprises, by weight, 0.03 to 0.06% of carbon (C), 0.5 to 1.5% of manganese (Mn), 0.01 to 0.25% of silicon (Si), 0.01 to 0.05% of aluminum (Al), 0.001 to 0.02% of phosphorus (P), 0.006% or less of sulfur (S), 0.0001 to 0.02% of titanium (Ti), 0.0001 to 0.03% of niobium (Nb), 0.001 to 0.005% of nitrogen (N), and a balance of iron (Fe) and inevitable impurities, wherein the Ti, Al and N satisfy the following relationship 1, and the Nb, C and N satisfy the following relationship 2: 0.03?(wt % Ti)×(wt % Al)×(wt % N)×106?0.20 (1), and 22?(mol % Nb)/{(mol % C)×(mol % N)}?1826 (2).
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 11, 2022
    Assignee: POSCO
    Inventors: Hwan-Goo Seong, Seong-Beom Bae
  • Steel sheet for tool and manufacturing method therefor
    Patent number: 11214845
    Abstract: The invention relates to a steel sheet for tool, and method for manufacturing thereof. An embodiment of the present invention is a steel sheet for a tool comprising 0.4 to 0.6 wt % of C, 0.05 to 0.5 wt % of Si, 0.1 to 1.5 wt % of Mn, 0.05 to 0.5 wt % of V, 0.1 to 2.0 wt % of at least of one or two components selected from the group comprising Ni, Cr, Mo, and combinations thereof, and the balance of Fe and inevitable impurities, with respect to 100 wt % of the total steel sheet, and provides a steel sheet for a tool of which the deviation of Rockwell hardness by the position in the width direction is within 5 HRC, and the ratio of those having a wave height in the longitudinal direction within 20 cm is 90% or more with respect to the wave height per 1 m of the steel sheet comprising the central portion in the longitudinal direction of the steel sheet for a tool.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: January 4, 2022
    Assignee: POSCO
    Inventors: Kyong Su Park, Jae Hoon Jang
  • Multi-layered zinc alloy plated steel having excellent spot weldability and corrosion resistance
    Patent number: 11208716
    Abstract: Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 28, 2021
    Assignee: POSCO
    Inventors: Young-Jin Kwak, Goo-Hwa Kim, Mun-Jong Eom, Seok-Jun Hong, Kyoung-Pil Ko, Yong-Hwa Jung, Dong-Yoeul Lee, Tae-Yeob Kim, Kyung-Hoon Nam
  • Ultra high strength hot-rolled steel sheet having excellent ductility and method for manufacturing same
    Patent number: 11203796
    Abstract: Provided is an ultra high strength hot-rolled steel sheet including, in percentage by weight: 0.15-0.25% of C, 0.6-2.0% of Si, 1.5-3.0% of Mn, 0.01-0.1% of Al, 0.01-0.5% of Cr, 0.005-0.2% of Mo, 0.001-0.05% of P, 0.001-0.05% of S, 0.001-0.01% of N, 0.003-0.1% of Nb, 0.003-0.1% of Ti, 0.003-0.1% of V, and the remainder being Fe and other unavoidable impurities, and satisfying following relational expressions (1) and (2). [Relational Expression 1] 4.5?[Mn]+12[sol.C]+2.5[Mo]+2[Cr]+300[B]+[V]?5.3. [Relational Expression 2] [sol.C]=[C]?(0.25[Ti]+0.13[Nb]+0.125[Mo]), 0.17?[sol.C]?0.22. (In relational expressions 1 and 2, each element symbol represents the content of each element in wt %).
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: December 21, 2021
    Assignee: POSCO
    Inventors: Sung-Il Kim, Seok-Jong Seo