Posco

Posco Co., Ltd

Hongduk Industrial Co., Ltd.

Kiswire Ltd.

Steel & Convergence Technology Research Association

Posco Coated & Color Steel Co., Ltd.

Tae-Chul Kim

Il-Ryoung Sohn

Jong-Sang Kim

Bong-Hwan Yoo

Min-Suk Oh

Myung-Soo Kim

Sang-Heon Kim

Jung-Kuk Kim

Dae-Young Kang

Hyun-Chu Yun

Jung-Hoon Kim

Soo-Hyoun Cho

Young-Sool Jin

Jin-Seo Park

Jong-Un Jung

Kyung-Jin An

Sung-Joo Kim

Ki-Cheol Kang

Heung-Yun Kim

Kyung-Kwan Park

Yong-Kyun Cho

Kwang-Won Kim

Sang-Tae Han

Tae-Yeul Park

Moon-Hi Hong

Jong-Sung Kim

Sung-Hoon Kang

Gwang-Weon Yu

Young-Ki Lee

Kee-Jo Jeong

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

The present invention relates to a plated steel sheet which can be used for automobiles, home appliances, building materials, etc. and a method for manufacturing same and, more particularly, to a zinc alloy plated steel sheet having excellent adhesion to an adhesive and a method for manufacturing same.

Plated steel sheet having excellent sealer adhesion and method for manufacturing same

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 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

A plated steel wire, according to one aspect of the present invention, comprises: a base steel wire; and a zinc alloy plated layer. The zinc alloy plated layer comprises, in percentage by weight: 1.0% to 3.0% of Al; 1.0% to 2.0% of Mg; 0.5% to 5.0% of Fe; and the balance being Zn and unavoidable impurities, and includes a Zn/MgZn2/Al ternary eutectic structure, a Zn single-phase structure, and an Fe&#x2014;Zn&#x2014;Al-based crystal structure, wherein the Fe&#x2014;Zn&#x2014;Al-based crystal structure is formed adjacent to the base steel wire, and can have an average thickness of &#x2155; to &#xbd; with respect to an average thickness of the zinc alloy plated layer.

Plated steel wire and manufacturing method for the same

Provided are a hot-dip zinc plated steel material and a method for preparing same, the hot-dip zinc plated steel material comprising: base iron comprising 0.01-1.6 wt % of Si and 1.2-3.1 wt % of Mn; a Zn&#x2014;Al&#x2014;Mg alloy plating layer; and an Al-rich layer formed on the interface of the base iron and Zn&#x2014;Al&#x2014;Mg alloy plating layer, wherein the rate of occupied surface area of the Al-rich layer is 70% or higher (including 100%).

High-strength hot-dip zinc plated steel material having excellent plating properties and method for preparing same

The present disclosure relates to a plated steel material that can be used in an automobile, a household appliance, a building material, and the like, and more particularly, to a zinc alloy plated steel material having excellent surface quality and corrosion resistance, and a method for manufacturing the same.

Method for manufacturing zinc alloy plated steel material having excellent surface quality and corrosion resistance

Provided is a plated steel material which can be used for an automobile, a household appliance, a building material, and the like and, more particularly, to a zinc alloy plated steel material having excellent corrosion resistance after being processed and a method for manufacturing the same.

Zinc alloy plated steel material having excellent corrosion resistance after being processed

Provided is a Zn&#x2014;Al&#x2014;Mg-based alloy-plated steel material that can be used in automobiles and home appliances and the like and, more particularly, to a Zn&#x2014;Al&#x2014;Mg-based alloy-plated steel material that can suppress the generation of cracks in a plating layer that are generated during processing.

Alloy-plated steel material having excellent crack resistance, and method for manufacturing same

Provided is an alloy-plated steel material that can be used in home appliances, automobiles, and construction materials and the like and, more particularly, to an alloy-plated steel material having excellent corrosion resistance and high surface quality.

Alloy-plated steel material having excellent corrosion resistance and high surface quality

Provided is a plated steel material which can be used for an automobile, a household appliance, a building material, and the like and, more specifically, to a zinc alloy plated steel material having excellent surface quality and corrosion resistance, and a method for manufacturing the same.

Zinc alloy plated steel material having excellent surface quality and corrosion resistance

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.

Zinc alloy plated steel material having excellent weldability and processed-part corrosion resistance

A plated steel material includes a plated layer containing, by wt %: 0.5 to 14% of Al, 0.5 to 5% of Mg, and the balance being Zn and inevitable impurities. The plated steel material satisfies the following Equation: ([Mg]&#x2212;[Mg])/[Mg]&#x2265;0.3. [Mg]means a content (wt %) of Mg in a surface of the plated layer, and [Mg]means a content (wt %) of Mg at a &#xbd;t position (t represents a thickness of the plated layer) from the surface of the plated layer in a thickness direction.

Growing community of inventors

Gwangyang-si, South Korea

Tae-Chul Kim