IMPELLER PRODUCTION METHOD BY FUSED DEPOSITION MODELING USING DISSIMILAR MATERIALS, AND IMPELLER

Title:

IMPELLER PRODUCTION METHOD BY FUSED DEPOSITION MODELING USING DISSIMILAR MATERIALS, AND IMPELLER

Document Type and Number:

WIPO Patent Application WO/2017/170729

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide: an impeller production method that limits costs while making it possible to impart erosion resistance without increasing the number of production steps; and an impeller. In this method for producing an impeller 10 by fused deposition modeling, an impeller 10 endowed with erosion resistance and comprising a material that is a second type of powder 201 on the surface 15A of a wall 15 defining a flow path 14 in the impeller 10 is formed by the layering of layers Ly resulting from repetition of the following steps: a first step S1 in which at least a first type of powder 201 comprising a metal material from among said first type of powder 201 and a second type of powder 202 capable of imparting erosion resistance is supplied to a predetermined target surface Tg; a second step in which an electron beam EB is used to irradiate a specified range within the target surface Tg on the basis of cross-sectional data; and a third step Se in which a layer Ly formed via melting and solidification is displaced by the thickness of said layer Ly with respect to the target surface Tg.

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Inventors:

KAWASUMI SOSUKE (JP)
KONNO YUYA (JP)
NAKANIWA AKIHIRO (JP)

Application Number:

PCT/JP2017/012987

Publication Date:

October 05, 2017

Filing Date:

March 29, 2017

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
MITSUBISHI HEAVY IND LTD (JP)

International Classes:

B22F3/105; F04D29/28; B22F3/16; B33Y10/00; B33Y80/00; F01D25/00; F04D29/02; F04D29/30; F04D29/62

Foreign References:

JP2015510979A	2015-04-13
JP2008169799A	2008-07-24
JP2016502589A	2016-01-28
JP2002249804A	2002-09-06
JP2015193866A	2015-11-05
JP2017036484A	2017-02-16

Attorney, Agent or Firm:

OBA, Mitsuru et al. (JP)

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