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Title:
HIGH-STRENGTH MEDIUM MANGANESE STEEL FOR WARM STAMPING AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/124654
Kind Code:
A1
Abstract:
The present invention relates to high-strength medium manganese steel, for warm stamping, containing 3-10 wt % of manganese (Mn), 0.05-0.3 wt % of carbon (C) and 0.1-1.0 wt % of silicon (Si), and comprising a balance of iron (Fe) and inevitably contained impurities. The present invention enables reduction of high thermal energy consumption of an existing hot stamping procedure by means of heat treatment at a low austenitizing temperature of medium manganese steel. Moreover, since the present invention does not require an additional tempering procedure and enables acquisition of high strength simply by means of slow cooling such as air cooling outside a mold without rapid cooling in the mold, the procedure is simplified and productivity is enhanced.

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Inventors:
LEE YOUNG KOOK (KR)
HAN JEONG-HO (KR)
NAM JAE HOON (KR)
Application Number:
PCT/KR2017/015341
Publication Date:
July 05, 2018
Filing Date:
December 22, 2017
Export Citation:
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Assignee:
UNIV YONSEI IACF (KR)
International Classes:
C22C38/04; C22C38/02
Foreign References:
CN106086653A2016-11-09
KR20130050138A2013-05-15
CN104498821A2015-04-08
US20140205488A12014-07-24
KR101677398B12016-11-18
JPS60238419A1985-11-27
KR20140085225A2014-07-07
Attorney, Agent or Firm:
KIM, In Cheol (KR)
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