FLOW PASSAGE FORMING METHOD - MITSUBISHI HEAVY IND LTD

Title:

FLOW PASSAGE FORMING METHOD

Document Type and Number:

Japanese Patent JPH1018911

Kind Code:

A

Abstract:

To form a flow passage for flowing fluid, on a base material in a short time.

Recessed-state grooves 11a are machined on the surface of a base material 11, to fill the grooves 11a with water soluble cores 12, and then brazing filler material is flame-sprayed by HP/HVOF on the surface of the base material 11, to form a brazing filler material layer 13. Next, Hastelloy (R) powder is sprayed by HP/HVOF to form an outer layer 14, and successively the base material 11 is heat-treated to sinter and densify the outer layer 14, and also the base material 11 and the outer layer 14 are brazed by the brazing filler material layer 13. After that, a flow passage 11b wherein a cross section shape (in a direction orthogonal to the flow direction of cooling liquid) forms neary a mouth shape is formed on the base material 11 by dipping the base material 11 into water to dissolve and remove the cores 12.

Inventors:

ENOMOTO KIYOSHI
FUJIWARA TSUTOMU
ONDA TAKASHI
SENDA MAKOTO

Application Number:

JP17195396A

Publication Date:

January 20, 1998

Filing Date:

July 02, 1996

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD

International Classes:

F02K9/97; C23C4/02; C23C4/12; C23C4/18; F02K9/64; (IPC1-7): F02K9/97; C23C4/02; C23C4/12; C23C4/18

Attorney, Agent or Firm:

Toshiro Mitsuishi (2 outside)

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