Hyundai Steel Company

Hyun Yeong Jung

Jin Ho Lee

Hye Jin Kim

Seung Pill Jung

Kyu Yeon Hwang

Sung Yul Huh

Hyo Dong Shin

Disclosed is a method of manufacturing a blank for hot stamping, which includes forming a plated layer on a steel plate by immersing the steel plate in a plating bath including aluminum and silicon; and heating the steel plate on which the plated layer is formed at a first temperature for a first time period.

Blank for hot stamping, method for manufacturing the same, hot stamping component, and method for manufacturing the same

Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.

Hot stamping component and method of manufacturing the same

A method for manufacturing a high-strength cold-rolled steel sheet according to an embodiment includes the steps of: reheating a steel slab, which includes 0.10 wt % to 0.13 wt % carbon (C), 0.9 wt % to 1.1 wt % silicon (Si), 2.2 wt % to 2.3 wt % manganese (Mn), 0.35 wt % to 0.45 wt % chromium (Cr), 0.04 wt % to 0.07 wt % molybdenum (Mo), 0.02 wt % to 0.05 wt % antimony (Sb), and the remainder being iron (Fe) and inevitable impurities, at a temperature of 1150&#xb0; C. to 1250&#xb0; C.; hot-rolling the reheated slab in such a manner as to reach a finishing mill delivery temperature of 800&#xb0; C. to 900&#xb0; C.; cooling the hot-rolled slab to a temperature of 600&#xb0; C. to 700&#xb0; C. and coiling the cooled slab, thereby obtaining a hot-rolled steel sheet; pickling the hot-rolled steel sheet, followed by cold rolling; annealing the cold-rolled steel sheet in a two-phase region of &#x3b1; and &#x3b3; phases; and cooling the annealed steel sheet to the martensite temperature range, followed by overaging.

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Dangjin-si, South Korea

Hyun Yeong Jung