Title:
フランシス型水車、フランシス型ポンプまたはフランシス型ポンプ水車のランナおよびその製造方法
Document Type and Number:
Japanese Patent JP4229821
Kind Code:
B2
Abstract:
To provide a Francis runner and its manufacturing method, in which a shrinkage fault is prevented from generating when molten metal cools and solidifies in a mold space, and the welding assembly is easy.
Casting 5 integrally cast with a band 2 and a plurality of blades 3, and a crown 4 separately cast from the casting are welded at the running water surface side of the crown 4 to assemble so as to be incorporated.
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Atsushi Murayama
Toshifumi Kurokawa
Teruhisa Funabashi
Toshifumi Kurokawa
Teruhisa Funabashi
Application Number:
JP2003408919A
Publication Date:
February 25, 2009
Filing Date:
December 08, 2003
Export Citation:
Assignee:
Toshiba Corporation
Ohira Special Casting Co., Ltd.
Yonago Steel Co., Ltd.
Ohira Special Casting Co., Ltd.
Yonago Steel Co., Ltd.
International Classes:
F03B3/12; F03B3/02; F03B11/00
Domestic Patent References:
| JP5280460A | ||||
| JP11324983A | ||||
| JP2003328989A | ||||
| JP54077258A |
Attorney, Agent or Firm:
Toshio Kanata
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