HOT FORGING DIE AND HOT FORGING METHOD

Title:

HOT FORGING DIE AND HOT FORGING METHOD

Document Type and Number:

WIPO Patent Application WO/2016/163307

Kind Code:

A1

Abstract:

Provided are a hot forging die and a hot forging method with which it is possible to perform necking 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 has a substantially semicircular convex shape that is continuous so as to surround the forging material. Each halved pressing part includes a rough machining part, and a finish machining part having a convex shape with a larger radius of curvature than said 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)

Application Number:

PCT/JP2016/060732

Publication Date:

October 13, 2016

Filing Date:

March 31, 2016

Export Citation:

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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: