HOT-STAMPED PART AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2019/004540

A1

A method for manufacturing a hot-stamped steel according to an embodiment comprises the steps of: reheating a steel slab at a temperature of 1200 to 1250°C, the steel slab including, by wt%, 0.20 to 0.50% of carbon (C), 0.05 to 1.00% of silicon (Si), 0.10 to 2.50% of manganese (Mn), 0 to 0.015% (0 exclusive)of phosphorus (P), 0 to 0.005% (0 exclusive) of sulfur (S), 0.05 to 1.00% of chromium (Cr), 0.001 to 0.009% of boron (B), 0.01 to 0.09% of titanium (Ti), and the balance of iron (Fe) and inevitable impurities; finish-rolling the reheated steel slab at a temperature of 880-950°C; subjecting the hot-rolled steel sheet to waterless cooling, followed by winding thereof at 680-800°C to form a hot-rolled decarburized layer on a surface thereof; subjecting the wound steel sheet to pickling, followed by cold-rolling; annealing the cold-rolled sheet material in a reducing atmosphere; plating the annealed sheet material; and hot-stamping the plated sheet material.

WO/2007/051789	PLANT FOR PRODUCING METAL PALLETS
JP2006007253	PRESSED PRODUCT AND ITS MANUFACTURING METHOD
WO/2019/033711	INTEGRATED PROCESS OF HOT STAMPING AND DIE TRIMMING

YOO BYUNG GIL (KR)
DO HYEONG HYEOP (KR)
SONG CHEE WOONG (KR)
LIM HEE JOONG (KR)
HUH SUNG YUL (KR)

PCT/KR2017/015715

January 03, 2019

December 29, 2017

Click for automatic bibliography generation  

HYUNDAI STEEL CO (KR)

B21D35/00; B21B3/02; B21B37/74; B21D22/02; C21D8/02; C21D9/46; C22C38/04; C22C38/28; C22C38/32

KR20160032194A	2016-03-23
KR20150038959A	2015-04-09
KR20110118621A	2011-10-31
KR101568549B1	2015-11-11
EP2631308A1	2013-08-28

AJU INTERNATIONAL LAW & PATENT GROUP (KR)

View/Download PDF      PDF Help

Previous Patent: LED PANEL

Next Patent: STEEL MATERIAL FOR TAYLOR WELDED BLANK AND METHOD FOR MANUFACTURING HOT-STAMPED PART USING SAME STEE...