Title:
MOLDED MATERIAL PRODUCTION METHOD AND MOLDED MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/146045
Kind Code:
A1
Abstract:
Provided are: a molded material production method in which a molded material is produced from a starting material metal plate, said molded material comprising a cylindrical body section and a flange formed on an end of the body section; and a molded material produced thereby. The molded material production method prevents the flange section of the molded material from becoming unnecessarily thick, prevents the occurrence of wrinkles and buckling, and makes it possible to reduce the weight of the molded material and the size of the starting material metal plate. When producing a molded material by a molding process including at least one instance of drawing/extraction processing and at least one instance of drawing processing performed after the drawing/extraction processing, a die and a drawing sleeve are opened and initial drawing processing is performed on an area corresponding to the body section, and ironing processing is carried out on an area corresponding to the flange while keeping the mold gap between the die and the drawing sleeve constant.
Inventors:
NAKAMURA NAOFUMI (JP)
YAMAMOTO YUDAI (JP)
YAMAMOTO YUDAI (JP)
Application Number:
PCT/JP2017/006364
Publication Date:
August 31, 2017
Filing Date:
February 21, 2017
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
B21D22/28
Domestic Patent References:
| WO2014109263A1 | 2014-07-17 |
Foreign References:
| JP2016002552A | 2016-01-12 | |||
| JPS57159224A | 1982-10-01 | |||
| JP2013051765A | 2013-03-14 |
Other References:
See also references of EP 3401034A4
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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