Title:
METAL PLATE SHEAR PROCESSING METHOD AND PRESSED COMPONENT PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/145063
Kind Code:
A1
Abstract:
Provided is a pressed component having excellent resistance to delayed fracture even when a metal plate comprising high strength steel is used. The method is for shear-processing the metal plate (10) comprising the high strength steel plate. The shear-processing is performed twice on at least some of the edge portions of the metal plate (10) and the cutting margin (ΔC) the second time shear processing is performed is 1.2 times or more but less than 20 times the plate thickness of the metal plate (10).
Inventors:
FUJII KENTO (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
FUKUMURA MASARU (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
FUKUMURA MASARU (JP)
Application Number:
PCT/JP2019/049692
Publication Date:
July 16, 2020
Filing Date:
December 18, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/20; B21D28/00; B21D28/02
Foreign References:
| JP2006116590A | 2006-05-11 | |||
| JPH03234321A | 1991-10-18 | |||
| JP2002066649A | 2002-03-05 | |||
| JP2010100121A | 2010-05-06 | |||
| JPH07227627A | 1995-08-29 | |||
| CN108817200A | 2018-11-16 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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