Title:
HOT-PRESS STAMPING COOLING METHOD AND HOT-PRESS STAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/037657
Kind Code:
A1
Abstract:
When hot-press stamping a thin steel sheet K, when cooling the thin steel sheet K by supplying a refrigerant to an ejection hole (27) that is communicated with a supply path (28) inside a lower mold (12), carried out is precooling in which the ejection amount per unit time of refrigerant from the ejection hole (27) is suppressed , and then carried out is main cooling in which the ejection amount per unit time is increased.
Inventors:
FUKUCHI HIROSHI (JP)
NOMURA NARUHIKO (JP)
SETO ATSUSHI (JP)
NOMURA NARUHIKO (JP)
SETO ATSUSHI (JP)
Application Number:
PCT/JP2014/074056
Publication Date:
March 19, 2015
Filing Date:
September 11, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D22/20; B21D24/00
Foreign References:
| JP2012218067A | 2012-11-12 | |||
| JP2011161481A | 2011-08-25 | |||
| JP2002102979A | 2002-04-09 | |||
| US20110232354A1 | 2011-09-29 | |||
| JP2011143437A | 2011-07-28 |
Other References:
See also references of EP 3045236A4
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)
Takayoshi Kokubu (JP)
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