Title:
METHOD OF PRESS-FORMING OF EMBOSSED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2010/084864
Kind Code:
A1
Abstract:
Proposed is a method of press-forming an embossed steel sheet which enables sufficient quenching of the embossed steel sheet. In the method, an embossed steel sheet (10) having a projected portion is press-formed by means of an upper die (3) and a die counter (4). After both dies are pressed together, a first water pump supplies water that circulates within the upper die (3) through coolant passage 5A → passage 7A → cavity S→ passage 7B → passage 5B → passage 5C → passage 7C → cavity S → passage 7D → passage 5D → passage 5E → passage 7E → cavity S → passage 7F → passage 5F → passage 5A, while a second water pump supplies water that circulates within the die counter (4) through coolant passage 6A → passage 8A → cavity S → passage 8B → passage 6B → passage 6C → passage 8C → cavity S → passage 8D → passage 6D → passage 6E → passage 8E → cavity S → passage 8F → passage 6F → passage 6A.
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Inventors:
SUNAGA Susumu (465-3, Otsuki-cho, Ashikaga-sh, Tochigi 05, 〒3260005, JP)
Application Number:
JP2010/050585
Publication Date:
July 29, 2010
Filing Date:
January 20, 2010
Export Citation:
Assignee:
FUKAI SEISAKUSHO CO., LTD. (465-3, Otsuki-cho Ashikaga-sh, Tochigi 05, 〒3260005, JP)
株式会社深井製作所 (〒05 栃木県足利市大月町４６５－３ Tochigi, 〒3260005, JP)
株式会社深井製作所 (〒05 栃木県足利市大月町４６５－３ Tochigi, 〒3260005, JP)
International Classes:
B21D24/00; B21D22/20
Attorney, Agent or Firm:
INAMURA Etsuo (1661-2, Ryumai-cho Ota-sh, Gunma 06, 〒3730806, JP)
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