Posco

Posco Co., Ltd

Research Institute of Industrial Science & Technology

Noroo Coil Coatings Co., Ltd.

Tae-Yeob Kim

Young-Jin Kwak

Woo-Sung Jung

Kyung-Hoon Nam

Yong-Hwa Jung

Dong-Yoeul Lee

Mun-Jong Eom

Seok-Jun Hong

Kyoung-Pil Ko

Sang-Hoon Park

Sang-Cheol Lee

Kyoung-Bo Kim

Yang-Woo Nam

Ji Hoon Yang

Jae In Jeong

Dong-Yun Kim

Goo-Hwa Kim

Myoung-Hee Choi

Yonghwa Jung

Hyun-Woo Kim

Jong-Sang Kim

Yon-Kyun Song

Jin-Tae Kim

Chang-Hoon Choi

Yeon-Ho Kim

Yang-Ho Choi

Young-Do Kim

Gab-Yong Kim

Gwang-Seok Kim

Hyeon-Soop Han

Young-Ra Lee

Hong-Kyun Sohn

Jae-Kyu Min

Seok-Won Cho

Yong-Jin Cho

Su-Ryong Bang

Jong-Min Byun

Sang-Joon Kim

Provided is a plated steel plate used for interior materials and exterior materials such as home appliances, construction materials, vehicles, etc., and a method for manufacturing same. The plated sheet plate includes: base steel; a Zn—Mg plating layer formed on the base steel; and a UV-curable film layer formed on the Zn—Mg plating layer, wherein a hairline pattern is formed on a surface of the Zn—Mg plating layer, and the Zn—Mg plating layer includes 8 to 27 weight % of Mg and a balance of Zn and inevitable impurities.

Plated steel plate having excellent glossiness and surface property, and method for manufacturing same

Provided is a galvanized steel sheet plated by vacuum deposition and, more specifically, to a galvanized steel sheet having excellent hardness and galling resistance, and a method for manufacturing same. The zinc coated steel sheet includes: a base steel sheet; and a zinc coated layer formed on the base steel sheet. The zinc coated layer is formed of a columnar structure, and a content of Mn included in the zinc coated layer is 0.1 to 0.4 wt %.

Galvanized steel sheet having excellent hardness and galling resistance

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&#x2014;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.

Multi-layered zinc alloy plated steel having excellent spot weldability and corrosion resistance

Provided is a multilayered zinc alloy plated steel material comprising a base iron and multilayered plated layers formed on the base iron, wherein each of the multilayered plated layers is any one of a Zn-plated layer, a Mg-plated layer, and a Zn&#x2014;Mg alloy-plated layer, and the ratio of the weight of Mg contained in the multilayered plated layers is 0.13-0.24 on the basis of the total weight of the multilayered plated layers.

Multilayered zinc alloy plated steel material having excellent spot weldability and corrosion resistance

Provided are a single layer zinc alloy plated steel material and a fabrication method therefor, the single layer zinc alloy plated steel material comprising a base iron and a zinc alloy plating layer formed on the base iron, wherein the zinc alloy plating layer contains 13-24 wt % of Mg, and the adhesion amount of the zinc alloy plating layer is at most 40 g/m(excluding 0 g/m).

Single layer zinc alloy plated steel material exhibiting excellent spot weldability and corrosion resistance, and fabrication method therefor

Provided is a Zn&#x2014;Mg alloy plated steel material comprising: a base steel material; and first to third Zn&#x2014;Mg alloy layers sequentially formed on the base steel material, wherein the first to third Zn&#x2014;Mg alloy layers have a Zn single phase, a Mg single phase, a MgZnalloy phase, and a MgZnalloy phase, an area rate of the MgZnalloy phase included in the first to third Zn&#x2014;Mg alloy layers is larger than an area rate of the MgZnalloy phase included in the first to third Zn&#x2014;Mg alloy layers, and an area rate of a MgZnalloy phase included in each of the first to third Zn&#x2014;Mg alloy layers is larger than an area rate of a MgZnalloy phase included in the second Zn&#x2014;Mg alloy layer.

Zn-Mg alloy plated steel material having excellent corrosion resistance and plating adhesion

Provided is a plated steel sheet often used as materials for vehicles, home appliances, construction and the like and, more specifically, to a plated steel sheet having a multilayer structure and a method for manufacturing the same.

Plated steel sheet having multilayer structure and manufacturing method therefor

The present invention relates to an aluminum-magnesium coated steel plate using vacuum coating, wherein an aluminum-magnesium coating layer is constituted by 1 to 45 wt % of magnesium, a balance of aluminum, and other inevitable impurities, and an AlMgalloy phase is formed in the aluminum-magnesium coating layer by performing heat treatment of the steel plate.

Steel sheet coated with aluminum-magnesium

The present invention provides a chromium-free coating composition having high blackening resistance and corrosion resistance, the composition comprising: 20 to 70 wt % of waterborne silane modified polyurethane; 0.5 to 5 wt % of a hardener; 0.5 to 5 wt % of a blackening inhibitor; 0.5 to 5 wt % of a corrosion inhibitor; and 0.5 to 5 wt % of a lubricant, with the balance being a solvent. The chromium-free coating composition has the effect of improving blackening resistance, corrosion resistance, alkali resistance, solvent resistance and fingerprint resistance of a steel sheet on which a coating layer comprising the composition is formed.

Chrome free coating composition having excellent blackening resistance and corrosion resistance, and surface-treated steel sheet

Provided are a heating apparatus configured to generate a coating vapor for coating a base metal (steel sheet) which is continuously transferred in a vacuum state, and a coating device including the heating apparatus. A coating material to be converted into a coating vapor is initially supplied in a solid phase (solid state) and then phase changed into a liquid (liquid state). Thereafter, the liquid-state coating material is supplied to a heating unit, thereby preventing problems such as equipment erosion occurring when a liquid coating material is directly supplied and preventing the decrease of the temperature of a coating material when a solid wire is supplied as a coating material. As a result, the energy efficiency of the heating apparatus may be maximized.

Heating apparatus, and coating device comprising same

The present invention relates to a Zn&#x2014;Mg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a Zn&#x2014;Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a Zn&#x2014;Fe intermetallic compound layer formed on the substrate steel sheet; a first Zn&#x2014;Mg coating layer formed on the Zn&#x2014;Fe intermetallic compound layer and comprising a Zn&#x2014;Fe intermetallic compound in which the content of Zn is 95% by weight or higher; a second Zn&#x2014;Mg coating layer formed on the first Zn&#x2014;Mg coating layer and comprising a Zn&#x2014;Mg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second Zn&#x2014;Mg coating layer and comprising a metallic oxide.

Zn&#x2014;Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion

A phosphate solution for a zinc or zinc-based alloy plated steel sheet, and a zinc or zinc-based alloy plated steel sheet using the same are provided. The phosphate solution for a zinc or zinc-based alloy plated steel sheet contains a molybdenum (Mo) ion, a calcium (Ca) ion and a phosphate ion. A zinc or zinc-based alloy plated steel sheet includes a base steel sheet, a zinc-based or zinc alloy-based plating layer formed on the base steel sheet, and a phosphate film formed on the zinc-based or zinc alloy-based plating layer. The phosphate film contains a molybdenum compound, Ca and a phosphate. A pitting phenomenon occurring at the time of treating a steel sheet with a phosphate is prevented, and excellent corrosion resistance is exhibited on a phosphate film.

Phosphate solution for zinc or zinc-based alloy plated steel sheet, and zinc or zinc-based alloy plated steel sheet using the same

Provided are a Zn&#x2014;Mg alloy plated steel sheet and a method for manufacturing same. The Zn&#x2014;Mg alloy plated steel sheet comprises a base steel sheet and a Zn&#x2014;Mg plating layer formed on the base steel sheet, wherein the content of Mg in the Zn&#x2014;Mg plating layer is 8 weight % or less (provided that 0 weight % is excluded), and the Zn&#x2014;Mg plating layer is a compound phase of Zn and Mg2Zn11. According to the present invention, provided are a Zn&#x2014;Mg alloy plated steel sheet and a method for manufacturing the same, wherein the Zn&#x2014;Mg alloy plated steel sheet has excellent corrosion resistance, high adhesion, and superior surface quality of metallic luster.

Zn&#x2014;Mg alloy plated steel sheet, and method for manufacturing same

Provided is a dry coating apparatus for coating a coating material, i.e., deposition vapor (metal vapor) on a substrate (a steel strip). The dry coating apparatus includes a coating part disposed in a vacuum to coat deposition vapor generated through heating and evaporation of a supplied coating material onto a proceeding object to be coated and a heating source disposed in an atmosphere to heat and levitate the coating material in the coating part.

Dry coating apparatus

Growing community of inventors

Gwangyang-si, South Korea

Tae-Yeob Kim