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Title:
A manufacturing method of a powder-compacting fabrication object
Document Type and Number:
Japanese Patent JP6152002
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing a powder compression molding which enables production of an easy-to-handle powder compression molding with high productivity, a powder compression molding and a coil part.SOLUTION: A method of producing a powder compression molding includes a preparation step of preparing a compression body formed by compressing a raw material powder by using a die having a through hole and a punch which is inserted into the die and presses the raw material powder and a rounding step of preparing a punch having a concave part which presses at least a part of an outer peripheral edge corner part formed by the contact surface of the compression body coming in contact with the die and a pressing surface of the punch and pressing at least a part of the outer peripheral edge corner part in an external pressing region provided in a part of the concave part to carry out corner rounding.

Inventors:
Uozumi Masato
Tomoyuki Ueno
Asako Watanabe
Application Number:
JP2013157159A
Publication Date:
June 21, 2017
Filing Date:
July 29, 2013
Export Citation:
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Assignee:
Sumitomo Electric Industries, Ltd.
Sumitomo Electric Sintered Alloy Co., Ltd.
International Classes:
B22F3/02; B22F1/00; B22F1/02; B22F3/00; B30B11/00; H01F1/24; H01F27/255; H01F41/02
Domestic Patent References:
JP2013026499A
JP2005137111A
Attorney, Agent or Firm:
Hiroshi Yamano