Title:
BLANK, MOLDED ARTICLE, MOLD AND METHOD FOR PRODUCING BLANK
Document Type and Number:
WIPO Patent Application WO/2016/092657
Kind Code:
A1
Abstract:
Provided is a plate-like blank (10) for press molding, which is produced by subjecting a metal plate (30) to a shearing work. The blank (10) has a sheared surface (14b) and a broken surface (14c) in the plate thickness direction, and has a shearing processed surface (14) which is formed to be annular when viewed in plan. When viewed in plan, the edge of the shearing processed surface (14) has curved portions (20) that are curved in a concave shape. The average of the lengths of the broken surface (14c) in the plate thickness direction in the curved portions (20) is larger than the average of the lengths of the broken surface (14c) in the plate thickness direction in the whole periphery of the shearing processed surface (14).
Inventors:
MATSUNO TAKASHI (JP)
EGAMI AKIRA (JP)
EGAMI AKIRA (JP)
Application Number:
PCT/JP2014/082767
Publication Date:
June 16, 2016
Filing Date:
December 10, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D28/34; B21D28/26
Foreign References:
| JP2011073012A | 2011-04-14 | |||
| JPS63174731A | 1988-07-19 | |||
| JPH07214191A | 1995-08-15 | |||
| US4543865A | 1985-10-01 | |||
| JPH0357516A | 1991-03-12 | |||
| JPH11330339A | 1999-11-30 | |||
| JP2014231094A | 2014-12-11 |
Other References:
See also references of EP 3231527A4
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
patent business corporation Bligh -- TASS (JP)
patent business corporation Bligh -- TASS (JP)
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