Title:
PARTITION WALL STRUCTURE HAVING PASSAGE HOLE, AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP3833505
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a partition wall part having a passage hole and a recessed part which can be manufactured at a high productivity, with a high precision, and at a low cost by inexpensive facilities without producing burrs in inner diameter parts, and also to provide a method for manufacturing the same.
SOLUTION: In a partition wall having the passage hole and the recessed part to form a fluid passage, the passage hole 4 and the recessed part 60 are disposed to be overlapped with each other. The recessed part 60 is formed by an extruding means by plastic work. The passage hole 4 is formed by free forging with plastic fluidity without being restrained by a die.
Inventors:
Koji Harada
Masayuki Kobayashi
Masaru Kawai
Junji Saito
Masayuki Kobayashi
Masaru Kawai
Junji Saito
Application Number:
JP2001241076A
Publication Date:
October 11, 2006
Filing Date:
August 08, 2001
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F02M59/44; B21J5/00; B21J5/10; B21J13/02; F02M59/46; (IPC1-7): F02M59/44; B21J5/00; B21J5/10; B21J13/02; F02M59/46
Domestic Patent References:
| JP9303645A | ||||
| JP2000071048A |
Foreign References:
| WO2000047888A1 |
Attorney, Agent or Firm:
Yukihiko Takada
Masaru Takenouchi
Masaru Takenouchi