Title:
HOT FORGING DIE AND HOT FORGING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/163308
Kind Code:
A1
Abstract:
Provided are a hot forging die and a hot forging method with which it is possible to perform swaging easily using a radial forging machine, even with materials difficult to machine that are used for turbine blades. Disclosed is a hot forging die for hot forging a rod-shaped forging material by radial forging, the hot forging die comprising a pair of halved pressing parts for sandwiching said forging material. Each halved pressing part is constituted by a surface made by forming a flat surface in a concave shape, and is formed so as to surround the forging material. Each halved pressing part includes a rough machining part and a finish machining part. The width of the finish machining part in the length direction of the forging material is wider than the width of the rough machining part.
Inventors:
MITSUNAGA HISASHI (JP)
FUKUI TSUYOSHI (JP)
TERAMAE TOSHIYA (JP)
NONOMURA TOSHIAKI (JP)
MATSUMOTO HIDEKI (JP)
SHIMOHIRA EIJI (JP)
KOHIKI SATOSHI (JP)
FUKUI TSUYOSHI (JP)
TERAMAE TOSHIYA (JP)
NONOMURA TOSHIAKI (JP)
MATSUMOTO HIDEKI (JP)
SHIMOHIRA EIJI (JP)
KOHIKI SATOSHI (JP)
Application Number:
PCT/JP2016/060733
Publication Date:
October 13, 2016
Filing Date:
March 31, 2016
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
B21J13/02; B21J5/00; B21K3/04
Foreign References:
JPS535056A | 1978-01-18 | |||
JPH07185725A | 1995-07-25 | |||
JPS561236A | 1981-01-08 | |||
JPS55136535A | 1980-10-24 |
Other References:
See also references of EP 3281720A4
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