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Document Type and Number:
Japanese Patent JP6761576
Kind Code:
PROBLEM TO BE SOLVED: To provide a die for bending correction, a bending correction method, and a manufacturing method of turbine blade rough-forging which can correct a shape easily by using a radial forging machine even in a case of a hardly-processable material used for a turbine blade.SOLUTION: A die for bending correction corrects a shape of a hot forging material for a turbine blade formed in a rod shape by radial forging. The die for bending correction includes a pressing part for correcting bending of the hot forging material for a turbine blade. The pressing part includes a first pressing part and a second pressing part simultaneously press a large-diameter part and a small-diameter part of the hot forging material for a turbine blade. The first pressing part and the second pressing part are formed so as to surround an outer peripheral surface of the hot forging material for a turbine blade along a circumferential direction.SELECTED DRAWING: Figure 1

Naofumi Mitsunaga
Satoshi Kobiki
Takeshi Fukui
Application Number:
Publication Date:
September 30, 2020
Filing Date:
September 29, 2016
Export Citation:
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Hitachi Metals Co., Ltd.
International Classes:
B21K3/04; B21D3/10; B21J5/00
Domestic Patent References:
Foreign References:

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