Pohang, South Korea
Pohang, South Korea

POSCO is a multinational steel-making company headquartered in Pohang, South Korea. It had an output of 39.1 million tonnes of crude steel in 2011, making it the world's fourth-largest steelmaker by this measure. In 2010, it was the world's largest steel manufacturing company by market value. Also, in 2012, it was named as the 146th world's largest corporations by the Fortune global 500.POSCO currently operates two integrated steel mills in South Korea, in Pohang and Gwangyang. In addition, POSCO operates a joint venture with U.S. Steel, USS-POSCO, which is located in Pittsburg, California, United States. Wikipedia.

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Disclosed is a magnetic domain refining method for radiating a laser beam to a surface of a directional electrical steel plate at intervals, which is capable of further reducing noise along with an iron loss reduction effect and further improving iron loss and noise reduction effects in an area where the directional electrical steel plate are bonded together, such as the joint part of the iron core of a transformer. Irradiated radiations formed by a laser beam in at least any one area of the directional electrical steel plate are unfolded in a fan rib form using one point of the directional electrical steel plate as a central point.


The present invention provides a form structure employed for a precast segment structure that is formed by stacking segment units upward, each of which is formed by circumferentially connecting a plurality of precast segments. The form structure comprises: an inner form disposed inside a circumferential connection part between adjacent precast segments; an inner frame provided to support the inner surface of the inner form; a frame support part provided to support the inner frame formed upwardly; an outer form disposed outside the circumferential connection part between the adjacent precast segments; and a fastening member provided to support the outer surface of the outer form.


Patent
Posco | Date: 2017-05-31

The present invention relates to a metal fiber manufacturing system. The system casts molten metal as a metal fiber; collects the metal fiber in real time; transfers the metal fiber; separates normal products from defective products; and packages a predetermined amount of the normal product metal fiber. The system processes the cast metal fiber continuously or in batches, and manufactures the same, thereby having effects of improving the efficiency of the production process and obtaining significant economic benefits.


Patent
Posco and Postech Academy Industry Foundation | Date: 2017-02-22

The present invention relates to carbon nanotube fiber and a producing method thereof. The carbon nanotube fiber has a tensile strength which exceeds 5 GPa, and the producing method includes: producing a carbon nanotube fiber precursor consisting of carbon nanotubes; evenly dispersing a cross-linking agent on the carbon nanotube fiber precursor; and acquiring carbon nanotube fiber by thermally treating the carbon nanotube fiber precursor wherein the cross-linking agent is evenly dispersed, wherein the acquired carbon nanotube fiber has cross-linking between wall surfaces of the carbon nanotubes each other.


The present invention relates to: a high-strength steel sheet used for construction materials and transportation means such as vehicles and trains and, more specifically, to a high-strength cold rolled steel sheet having excellent ductility, a hot-dip galvanized steel sheet, and a method for manufacturing the same.


Provided are a heat recovery apparatus based on a fuel cell and an operating method thereof. In the fuel cell-based heat recovery apparatus and the operating method thereof, hot water and steam may be generated by using heat generated while a molten carbonate fuel cell (MCFC) operates to supply the generated hot water or steam to buildings, thereby reducing a rate of operation in cooling/heating equipment using electricity so as to reduce air-conditioning costs.


Patent
Volkswagen AG and Posco | Date: 2017-08-16

The invention refers to a method of manufacturing a sheet metal product (28) including the steps of:a) providing a molten magnesium alloy (10, 10) consisting of- 0.4 wt% to 2 wt% Zn,- 0.4 wt% to 1 wt% Ca,- 0.00 wt% to 1.0 wt% rare earth elements and/or Sr,- unavoidable impurities and- the balance being Mgb) forming a strip (10, 10) in a twin roll casting process,c) performing a warm rolling process on the strip (10, 10) andd) performing a subsequent heat treatment on the strip (10, 10) at 300C to 450C for 0,5 min to 60 min. The invention further refers to a sheet metal product (28), obtained or obtainable by the method of the invention.


Patent
Posco and Sinjin SM Co. | Date: 2017-05-24

The present invention provides a cutting apparatus comprising: a supply part for supplying an object to be cut; a first cutting part for cutting the object to be cut, provided from the supply part; a carrying part arranged to be consecutive to the first cutting part to carry an intermediate cut object, cut by the first cutting part; and a second cutting part arranged to be consecutive to the carrying part to receive and cut the intermediate cut object from the carrying part, wherein the first and second cutting parts comprise saw blade parts movably and rotatably configured to cut the object to be cut or the intermediate cut object, and the saw blade part has a rotary shaft formed on the upper side of the object to be cut or the intermediate cut object.


A pre-coating agent composition for a grain-oriednted electrical steel sheet, a grain-oriednted electrical steel sheet including the same, and a manufacturing method thereof are provided. Particularly, a pre-coating agent composition for a grain-oriednted electrical steel sheet including an acid containing boron (B); and a solvent, a grain-oriednted electrical steel sheet including the same, and a manufacturing method thereof are provided.


There are provided an expandable high-strength steel material and an expanded high-strength steel pipe having excellent expandability and collapse resistance, and methods for manufacturing the expandable high-strength steel material and the expanded high-strength steel pipe. The expandable high-strength steel material including, by weight, manganese (Mn): 12% to 18%, carbon (C): 0.3% to 0.6%, and a balance of iron (Fe) and inevitable impurities, wherein the carbon (C) and the manganese (Mn) satisfy the following condition: 23 35.5C + Mn 38. Before being expanded, the expandable high-strength steel material has an austenite single phase microstructure, and after being expanded, the expandable high-strength steel material has a microstructure including 5 area% to 50 area% martensite and 50 area% to 95 area% austenite.

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