Kim, Kyungsangbook-Do
Gun-Young Kim, Kyungsangbook-Do KR
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20090028478 | BEARING DEVICE FOR ROLL OF HOT DIPPING BATH IN CONTINUOUS HOT DIP COATING LINE - In a bearing device for a roll of a hot dipping bath, i.e., zinc pot, a sleeve is fastened to a shaft of the roll of the hot dipping bath in a continuous hot dip coating line, i.e., a continuous galvanizing line. A bush housing has a bush internally fixed to support the sleeve, and a curved annular outer surface. Also, bush housing fixed rings are fixed to both inner sides of a fixed ring housing which is associated with a rig of the hot dipping bath roll. Each of the bush housing fixed rings has a curved annular inner surface supporting the bush housing at both sides thereof and in abutment with the curved annular outer surface of the bush housing. The invention allows the steel sheet to be coated with molten metal stably and speedily with high efficiency. Also, the bush and sleeve of the bearing device are not locally worn away, thereby extending useful life of the roll. | 01-29-2009 |
Hyun-Tae Kim, Kyungsangbook-Do KR
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20150344702 | SURFACE TREATMENT COMPOSITION FOR GALVANIZED STEEL SHEET, SURFACE TREATMENT METHOD FOR GALVANIZED STEEL SHEET, AND GALVANISED STEEL SHEET - Provided are: a surface-treatment composition for galvanised steel sheet, the composition comprising, with respect to 100 parts by weight of solution as a whole, between 3.0 and 25.0 parts by weight of a silane compound, between 0.5 and 5.0 parts by weight of a molybdenum compound, between 0.5 and 5.0 parts by weight of a vanadium compound, between 0.1 and 3.0 parts by weight of a nickel compound, between 0.05 and 1.0 part by weight of a copper compound and a balance of solvent; a method of surface treating a galvanised steel sheet by means of the surface-treatment composition; and a surface-treated galvanized steel sheet. The present invention makes it possible to provide a galvanised steel sheet in which corrosion resistance, blackening resistance, hot-water resistance and electrical conductivity are ensured, without the risk of additional equipment installation problems, increased production cost problems and environmental pollution problems for the purpose of chrome treatment. | 12-03-2015 |
Hyun-Tai Kim, Kyungsangbook-Do KR
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20090136742 | Ag-containing solution, antibacterial resin composition comprising the solution and antibacterial resin coated steel plate - An aqueous silver-containing solution comprising nano-sized silver particles wherein silver (Ag) particles having a particle diameter of 1 to 20 nm have a concentration of 200 to 100,000 ppm, the pH of the solution is maintained in a range of 6 to 8.5, and based on the weight of the silver-containing solution, an amount of a stabilizer as an impurity is in a range of 0.5 to 1.5% by weight, an amount of anions of a silver salt as another impurity is 1.0% by weight or less and the total amount of the stabilizer and anions of the silver salt is 2.0% by weight or less; an antibacterial resin composition comprising 100 parts by weight of an acrylic, urethane, epoxy or ester resin, 0.05 to 5 parts by weight of a curing agent and a silver-containing solution in an amount such that a concentration of silver is in a range of 5 to 100 ppm, relative to the resin composition; and an antibacterial resin-coated steel plate having a dry film thickness of not more than 5 μm which is formed by coating of the aqueous antibacterial resin composition. Steel plates coated with the antibacterial resin composition exhibit superior antibacterial properties, corrosion resistance, conductivity and adhesion. | 05-28-2009 |
Jae-Kyu Kim, Kyungsangbook-Do KR
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20080296812 | Degassing Apparatus Having Duplex Vacuum Vessel - A degassing apparatus having duplex vacuum vessels for removing impurity gases from molten steel by backflow of molten steel thereby homogenizing molten steel composition. The apparatus includes duplex vacuum vessels of first and second vacuum vessels fixedly arranged at a predetermined interval to a floor which is provided horizontally at a predetermined height from a bottom; first and second ladle carriages arranged to run on first and second rails, respectively, to reciprocate between a treatment position directly under the first and second vacuum vessels and a tapping position where refined molten steel is tapped, each of the first and second ladle carriage loaded with a corresponding one of first and second ladles; and first and second lifting cylinders each for raising and lowering each of the first and second ladles in the treatment position so that a bottom end of each of the first and second vacuum vessels is immersed by molten steel in each of the first and second ladles. The apparatus can remove limiting factors of suspending a continuous vacuum degassing refining process and thus prolong lifetime of the vacuum vessel and save manufacturing cost. | 12-04-2008 |
Sang-Heon Kim, Kyungsangbook-Do KR
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20080206592 | Galvanized Stell-Sheet Without Spangle, Manufacturing Method Thereof and Device Used Therefor - A spangle-free, hot-dip galvanized steel sheet, and a method and device for manufacturing the same. The hot-dip galvanized steel sheet is characterized in that a solidified zinc crystal of hot-dip galvanized layer has an average crystalline texture particle diameter of 10 to 88 μm and there is no solidification traces of dendrites upon observing under a microscope at a magnification of 100×. The method comprises dipping a steel sheet in a bath of a zinc-coating solution containing 0.13 to 0.3% by weight of aluminum; air-wiping the steel sheet to remove an excess of the coating solution; spraying water or an aqueous solution on the air-wiped steel sheet, using a steel sheet temperature in the range of a hot-dip galvanization temperature to 419° C. as a spray initiation temperature and using a steel sheet temperature in the range of 417° C. to 415° C. as a spray completion temperature; passing sprayed liquid droplets of water or aqueous solution through a mesh-like high-voltage charged electrode which is electrically charged with a high voltage of −1 to −50 kV; and allowing the electrode-passed liquid droplets to be bound to the surface of the steel sheet and hereby being served as solidification nuclei of molten zinc. | 08-28-2008 |
Sang-Hoon Kim, Kyungsangbook-Do KR
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20140366989 | HIGH SILICON STEEL SHEET HAVING EXCELLENT PRODUCTIVITY AND MAGNETIC PROPERTIES AND METHOD FOR MANUFACTURING SAME - The purpose of the present invention is to provide a high silicon steel sheet having excellent productivity and magnetic properties and a method for manufacturing the same. | 12-18-2014 |
Sang-Joon Kim, Kyungsangbook-Do KR
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20090114149 | GAS WIPING APPARATUS - A gas wiping apparatus for use in coating a molten metal onto a steel strip. In the apparatus, a chamber, to which a high pressure gas is supplied, defines a multistage uniform pressure space. A lip support unit is associated with a front of the chamber to allow the high pressure gas to flow therethrough, the lip support unit supporting the apparatus against load. Upper and lower lips are associated with a front of the lip support unit to cooperatively define an outlet. The upper lip adjusts a gap of a gas outlet cooperatively with the lower lip, and can be easily installed in a lip support unit while adjusting the gap of the gas outlet stably. Also, edge over coating (EOC) of the steel strip can be prevented without an additional auxiliary nozzle. | 05-07-2009 |
Seong-Ju Kim, Kyungsangbook-Do KR
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20080286603 | Steel Sheet for Hot Press Forming Having Excellent Heat Treatment and Impact Property, Hot Press Parts Made of It and the Method for Manufacturing Thereof - Disclosed is a steel sheet that exhibits an ultra-high strength after hot press forming followed by rapid cooling, and an enhanced yield strength after painting. The steel sheet has a composition comprising 0.1% to 0.5% by weight of C, 0.01% to 1.0% by weight of Si, 0.5% to 4.0% by weight of Mn, 0.1% by weight or less of P, 0.03% by weight or less of S, 0.1% by weight of soluble Al, 0.01% to 0.1% by weight of N, 0.3% by weight or less of W, and the balance Fe and other inevitable impurities. Further disclosed are a hot-pressed part made of the steel sheet and a method for manufacturing the hot-pressed part. The hot-pressed part achieves a high increment in yield strength after heat treatment for painting while ensuring an ultra-high tensile strength. Furthermore, the hot-pressed part exhibits superior adhesion to a coating layer, good surface appearance and improved corrosion resistance after painting. | 11-20-2008 |
20080295928 | Method for Manufacturing High Strength Steel Strips with Superior Formability and Excellent Coatability - A method for manufacturing a steel sheet used for structural members, elements, etc. of automobiles including a front side member, pillar, and the like, and more particularly, a method for manufacturing a steel sheet having a high strength and formability as well as hot-dip galvanizing properties is disclosed. In the method, after an aluminum killed steel slab, which comprises, by weight %,: C: 0.05% to 0.25%; Si: 0.1% to 1.5%; S: 0.02% or less; N: 0.01% or less; Al: 0.02% to 2.0%; Mn: 1.0% to 2.5%; P: 0.001% to 0.1%; Sb: 0.005% to 0.10%; the balance of Fe and other unavoidable impurities, is subjected to a homogenization treatment at a temperature range of 1050° C. to 1300° C., the aluminum killed steel slab is subjected to a hot rolling under a finishing hot rolling temperature of 850° C. to 950° C. and a coiling temperature of 400° C. to 700° C., followed by a cold rolling under a cold rolling reduction ration of 30% to 80%, and annealing the cold rolled steel sheet. | 12-04-2008 |
20090053556 | HIGH MN STEEL SHEET FOR HIGH CORROSION RESISTANCE AND METHOD OF MANUFACTURING GALVANIZING THE STEEL SHEET - A high-manganese hot-dip coated steel sheet is disclosed which provides high corrosion resistance, high ductility and high strength, mainly used for inner and outer panels of automobiles, and a method of manufacturing the same. The high-manganese hot-dip coated steel sheet includes a substrate steel sheet having a composition of (in weight %) 0.1 to 1.5% of C, 5 to 35% of Mn, and the remainder includes Fe and other unavoidable impurities, and a hot-dip zinc coating layer formed on the substrate steel sheet, the hot-dip zinc coating layer having a composition of (in weight %) 0.1 to 10% of Mn, 5 to 15% of Fe, and the remainder including Zn and other unavoidable impurities. | 02-26-2009 |
20090202382 | HIGH MANGANESE STEEL STRIPS WITH EXCELLENT COATABILITY AND SUPERIOR SURFACE PROPERTY, COATED STEEL STRIPS USING STEEL STRIPS AND METHOD FOR MANUFACTURING THE STEEL STRIPS - A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics. | 08-13-2009 |
Seong-Wan Kim, Kyungsangbook-Do KR
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20080259994 | Infrared Radiation Temperature Measuring System with Error Source Radiance Optical Filtering System and Method Using the Same - Disclosed herein is a system and method for measuring radiation temperature through filtration of optical error sources, which can measure surface temperatures of a heating substance within a heating furnace. The system comprises a front lens to collect infrared rays from a measuring target and from surroundings, a pin hole plate having a pin hole formed therein to allow only the infrared rays emitting from the measuring target area to pass therethrough, a rear lens to convert the infrared rays having passed through the pin hole into horizontal infrared rays, a condenser lens to collect the infrared rays having passed through the rear lens, and a radiation pyrometer to measure a temperature of the infrared rays having passed through the filtering unit. The system possible can ensure accuracy and reliability in temperature measurement, and can provide highly precise combustion control, operation stability, and improvement in quality of products. | 10-23-2008 |
Sung-Kyu Kim, Kyungsangbook-Do KR
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20090053556 | HIGH MN STEEL SHEET FOR HIGH CORROSION RESISTANCE AND METHOD OF MANUFACTURING GALVANIZING THE STEEL SHEET - A high-manganese hot-dip coated steel sheet is disclosed which provides high corrosion resistance, high ductility and high strength, mainly used for inner and outer panels of automobiles, and a method of manufacturing the same. The high-manganese hot-dip coated steel sheet includes a substrate steel sheet having a composition of (in weight %) 0.1 to 1.5% of C, 5 to 35% of Mn, and the remainder includes Fe and other unavoidable impurities, and a hot-dip zinc coating layer formed on the substrate steel sheet, the hot-dip zinc coating layer having a composition of (in weight %) 0.1 to 10% of Mn, 5 to 15% of Fe, and the remainder including Zn and other unavoidable impurities. | 02-26-2009 |
20090202382 | HIGH MANGANESE STEEL STRIPS WITH EXCELLENT COATABILITY AND SUPERIOR SURFACE PROPERTY, COATED STEEL STRIPS USING STEEL STRIPS AND METHOD FOR MANUFACTURING THE STEEL STRIPS - A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics. | 08-13-2009 |
Won-Bong Kim, Kyungsangbook-Do KR
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20080296336 | Wire Guider of Air Guide Type - A wire guider includes a guiding unit having an inner path extending along the running direction of the wire to guide the running of the wire and an air supply unit for supplying air into the inner path to form a spiral air flow having a current rate faster than a running rate of the wire between an outer surface of the wire and an inner surface of the inner path. Wire Vibration resulting from a thrust force of mill rolls can be damped to more stably carry out one-direction running of the wire and minimize contact between the wire and a guide path. This reduces surface defects of the wire and abrasion of the guide system and protects a sensor unit from damage. | 12-04-2008 |
Yung-Up Kim, Kyungsangbook-Do KR
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20090028478 | BEARING DEVICE FOR ROLL OF HOT DIPPING BATH IN CONTINUOUS HOT DIP COATING LINE - In a bearing device for a roll of a hot dipping bath, i.e., zinc pot, a sleeve is fastened to a shaft of the roll of the hot dipping bath in a continuous hot dip coating line, i.e., a continuous galvanizing line. A bush housing has a bush internally fixed to support the sleeve, and a curved annular outer surface. Also, bush housing fixed rings are fixed to both inner sides of a fixed ring housing which is associated with a rig of the hot dipping bath roll. Each of the bush housing fixed rings has a curved annular inner surface supporting the bush housing at both sides thereof and in abutment with the curved annular outer surface of the bush housing. The invention allows the steel sheet to be coated with molten metal stably and speedily with high efficiency. Also, the bush and sleeve of the bearing device are not locally worn away, thereby extending useful life of the roll. | 01-29-2009 |