Posco

Posco Co., Ltd

Corning Incorporated

Steel & Convergence Technology Research Association

Posco Coated & Color Steel Co., Ltd.

Myung-Soo Kim

Hyeon-Seok Hwang

Suk-Kyu Lee

Jong-Sang Kim

Ki-Cheol Kang

Il-Jeong Park

Il-Ryoung Sohn

Tae-Chul Kim

Dae-Young Kang

Young-Jin Kwak

Jin-Tae Kim

Jung-Hwan Lee

Bong-Hwan Yoo

Young-Ha Kim

Kwang-Tai Min

Ju-Youn Lee

Kwang-Geun Chin

Sung-Kyu Kim

Heung-Yun Kim

Won-Ho Son

Sun-Ho Jeon

Chang-Hoon Choi

Jong-Gi Oh

Sung-Joo Kim

Joong-Chul Park

Ha-Na Choi

Jong-Chan Park

Seong-Ju Kim

Yong-Joo Kim

Jong-Ho Kim

Joon-Soo Kim

Bum-Gook Lee

Tae-Hyo Park

Sang-Tae Han

Kwang-Won Kim

Seul-Gi So

Yong-Kyun Cho

Kyung-Kwan Park

Moon-Hi Hong

Tae-Yeul Park

Jae-Seon Hong

Hong-Lea Cho

Young-Kwang Hong

Provided is a thin glass-laminated printed steel sheet comprising: a printed steel sheet including a metal sheet and a printed layer on which a design or a pattern having a high resolution of 300 dpi or higher is printed on a surface of the metal sheet; an adhesive layer formed by curing an ultraviolet curable adhesive solution on the printed steel sheet, having a thickness of 10 to 100 μm, and being transparent; and a flexible thin glass attached by the adhesive layer, wherein a reference value for color density (DComparison) is higher than 1.6, as measured by a spectrophotometer.

Thin glass-laminated printed steel sheet having excellent surface quality and method for manufacturing same

A hot-dipped galvanized steel sheet of the present invention includes: a base steel sheet; a Zn—Mg—Al based plating layer provided on at least one surface of the base steel sheet and including, in wt %, with respect to components other than iron (Fe) diffused from the base steel sheet, 5.1 to 25% of Al and 4.0-10% of Mg, and the remainder of Zn and other inevitable impurities; and an interfacial alloy layer having a Fe—Al—Zn composition formed between the base steel sheet and the plating layer, wherein the interfacial alloy layer has a thickness of 0.5-2 μm and has a dendritic form, the Zn—Mg—Al based plating layer has a Zn—Al—MgZnternary eutectic structure, a Zn—MgZnbinary eutectic structure, and a structure including one or more of an Al single-phase structure having solid-solubilized Zn and a Zn single-phase structure, and agglomerated Al is included in a MgZnstructure.

Hot-dipped galvanized steel sheet having excellent bending workability and corrosion resistance and manufacturing method therefor

The present invention provides a Zn—Mg—Al plated steel sheet having excellent in corrosion resistance and bendability, and a method for manufacturing same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, bendability, and plating adhesion, and a method for manufacturing the same.

Plated steel sheet having excellent corrosion resistance and bendability and method for manufacturing same

A hot-dip galvanized steel sheet according to one aspect of the present invention comprises a base steel sheet and a hot-dip galvanized layer formed on the surface of the base steel sheet, wherein the difference between the average of the Mn/Si values of surface oxides present on a surface portion, which is the region from the interface between the hot-dip galvanized layer and the base steel sheet to a depth of 15 nm, and the average of the Mn/Si values of internal oxides, which are present in the region from the interface to a depth of 50-100 nm, can be 0.5 or more. Mn and Si of each oxide mean the amounts (wt %) of Mn and Si components in the oxide, which are measured by EDS, and the average of Mn/Si values means the averaged value of the Mn/Si values measured for each oxide.

High-strength hot-dip galvanized steel sheet having excellent surface quality and electric resistance spot weldability, and manufacturing method therefor

A galvanized steel sheet including a base steel sheet, and a zinc-based plating layer on the surface of the base steel sheet. The base steel sheet may include a first surface layer region corresponding to a depth of 25 μm from an interface between the base steel sheet and the zinc-based plating layer in a thickness direction of the base steel sheet, and a second surface layer region adjacent to the first surface layer region and corresponding to a depth of 25 μm to 50 μm in the thickness direction of the base steel sheet. A fraction of ferrite contained in the first surface layer region is 55 area % or more, an average grain size of the ferrite contained in the first surface layer region is 2 to 10 μm, and a fraction of ferrite contained in the second surface layer region is 30 area % or more.

High-strength hot-dipped galvanized steel sheet having excellent surface quality and spot weldability, and manufacturing method therefor

The present invention relates to a plated steel sheet having excellent corrosion resistance, workability and surface quality, and at the same time, capable of reducing occurrence of liquid metal embrittlement (LME).

Plated steel sheet having excellent corrosion resistance, workability and surface quality and method for manufacturing same

Provided are an aluminum-zinc alloy plated steel sheet having excellent hot workability and corrosion resistance, and a method for manufacturing same. The plated steel sheet has an Al—Zn hot-dip aluminized coating layer on a base steel sheet, wherein: the coating layer is composed of a lower layer part and an upper layer part; the lower layer part comprises 40-50% of Fe, 50-60% of Al, 1% or less of Si, and other unavoidable impurities, on the basis of wt % of the lower layer part itself; the upper layer part comprises 10-30% of Zn, the balance of Al, and 0.05% or less of at least one of Cr, Mo, and Ni as an impurity, on the basis of wt % of the upper layer part itself; and the thickness of the upper layer part accounts for 30% or less of the total thickness of the coating layer.

Aluminum-zinc alloy plated steel sheet having excellent hot workability and corrosion resistance, and method for manufacturing same

Provided is an aluminum coated steel sheet having excellent anti-corrosion properties and weldability, and a manufacturing method thereof. The aluminum coated steel sheet includes: an austenitic base steel sheet including at least 70 area % of an austenite microstructure; and an aluminum coating layer formed on the base steel sheet, wherein the base steel sheet includes at least 80 area % of ferrite in a surface layer portion, which denotes a region extending from the interface with the coating layer to a depth of 100 μm into the base steel sheet, and the aluminum coating layer may have a composition comprising 2-12 wt % of Si, 5-30 wt % of Zn, and 0.1-5 wt % of Mn, with the balance being Al and inevitable impurities.

High-strength aluminum coated steel sheet having excellent anti-corrosion properties and weldability, and manufacturing method thereof

An aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and a method for manufacturing the same are disclosed. The aluminum alloy-plated steel sheet that includes a base sheet, and an alloy-plated layer formed on the base sheet. Interfacial roughness between the alloy-plated layer and the base steel sheet is 25. μm or less. Such an aluminum alloy-plated steel sheet prevents microcracks generated during hot forming and has excellent seizure resistance and corrosion resistance. A method for manufacturing such an aluminum alloy-plated steel is also disclosed.

Aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and method for manufacturing same

Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZnphase in phase fraction. In the MgZnphase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZnphase.

Plated steel sheet having excellent corrosion resistance, galling resistance, workability and surface property

The present disclosure relates to an aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and a method for manufacturing the same, and more particularly, to an aluminum alloy-plated steel sheet preventing microcracks generated during hot forming and has excellent seizure resistance and corrosion resistance, and a method for manufacturing the same.

Aluminum-based alloy-plated steel sheet having excellent workability and corrosion resistance, and manufacturing method therefor

A plating steel sheet for hot press forming includes: a base steel sheet; an Al&#x2014;Zn-based plating layer formed on at least one surface of the base steel sheet; and an Fe&#x2014;Al-based surface alloy layer formed between the base steel sheet and the Al&#x2014;Zn-based plating layer, wherein the Al&#x2014;Zn-based plating layer can include 10-30 wt % of Zn, 1 wt % or less of Fe, and the balance of Al and impurities.

Plating steel sheet for hot press forming, forming member using same, and manufacturing method therefor

Provided is a plated steel to be used for automobiles, electric home appliances, building materials and the like and, more specifically, to a zinc alloy-plated steel having excellent corrosion resistance and surface smoothness, and a method for manufacturing the same.

Zinc alloy-plated steel having excellent corrosion resistance and surface smoothness

Provided is a highly corrosion-resistant plated steel sheet having plating adhesion and resistance to liquid metal embrittlement. A highly corrosion-resistant plated steel sheet comprises a base steel sheet and a plated layer, which sequentially comprises an Fe&#x2014;Al alloy layer and an MgZnlayer from an interface with the base steel sheet.

Highly corrosion-resistant plated steel sheet having excellent plating adhesion and resistance to liquid metal embrittlement

Growing community of inventors

Gwangyang-si, South Korea

Myung-Soo Kim