Title:
複数の管状部品を組み立てることによるターボ機械羽根車の製造
Document Type and Number:
Japanese Patent JP6726627
Kind Code:
B2
Abstract:
A method for manufacturing impellers is described. The method provides for manufacturing a plurality of tubular components, each tubular component forming an inner passage, which is shaped as one of the flow passages of the final impeller. The tubular components are assembled together forming a semi-finished impeller. The semi-finished impeller is provided with annular cavities extending around the rotation axis of the impeller and gaps between adjacent tubular components. The gaps and cavities are filled with metal powder and the semi-finished impeller is subject to hot isostatic pressing, to densify the metal powder and form a monolithic final impeller.
Inventors:
Mora, Paolo
Marge, Gabriele
Patel, Mihilkmal Pravinby
Tonarelli, Leonardo
Iozelli, Federico
Marge, Gabriele
Patel, Mihilkmal Pravinby
Tonarelli, Leonardo
Iozelli, Federico
Application Number:
JP2016575515A
Publication Date:
July 22, 2020
Filing Date:
July 02, 2015
Export Citation:
Assignee:
NUOVO PIGNONE S.R.L.
International Classes:
F04D29/22; B22F3/15; B22F3/16; B22F5/04; B22F7/08; F01D5/04; F01D9/02; F01D25/00; F04D29/28
Domestic Patent References:
| JP2011241831A | ||||
| JP2013527358A |
Foreign References:
| WO2012131617A1 |
Attorney, Agent or Firm:
Sakamoto & Partners, Inc.
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka