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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING IMPELLER
Document Type and Number:
Japanese Patent JP2012176417
Kind Code:
A
Abstract:

To provide a method for manufacturing an impeller that can enhance working efficiency while avoiding an increase in cost, and also can obtain a high-strength impeller.

The method for manufacturing an impeller includes a forging step of subjecting an outer circumferential region 16 that is a predetermined range from an outer circumferential side toward a radially inner side of an inclined curved surface 12 of an impeller material 11, to forge processing using molds 21, 21 corresponding to a flow path, sequentially in a circumferential direction of the material to form a groove 13 in a part to be formed into the flow path and also to form a raised part 14 in a part to be formed into a blade.


Inventors:
Ishii, Ken
Nakajima, Hiroshi
Yamashita, Akio
Application Number:
JP2011000040005
Publication Date:
September 13, 2012
Filing Date:
February 25, 2011
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B21K3/04; B23P13/00; F04D29/28
Attorney, Agent or Firm:
森 隆一郎
志賀 正武
高橋 詔男
山崎 哲男
松沼 泰史