Title:
冷却通路を有するノズル製造方法
Document Type and Number:
Japanese Patent JP3564219
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture a nozzle having a predetermined quality at a low manufacturing cost. SOLUTION: After a two-layer stainless outer cylinder 1 and a normal stainless inner cylinder 2 are formed, overlapped and connected to each other by a plurality of linear seam weld lines 3, they are set in forming metal molds 4, 5, 6, and while they are heated in a vacuum furnace, pressurized gas is supplied between the inner cylinder 2 and the outer cylinder 1 so that a cooling passage 11 is formed. Hereby, the outer cylinder 1 and the inner cylinder 2 are easily formed and the operation of the linear seam weld lines 3 can be simply executed, and also the cooling passage 11 can be formed at once by utilizing superplastic deformative two-layer stainless for the outer cylinder 1 and gas pressurizing between the outer cylinder 1 and the inner cylinder 2, therefore, a high quality nozzle can be manufactured at a low cost and within short term of works.
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Inventors:
Masaaki Yasui
Takayuki Tsuzuki
Takayuki Tsuzuki
Application Number:
JP33325795A
Publication Date:
September 08, 2004
Filing Date:
December 21, 1995
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F02K9/64; B21D26/033; B21D26/041; B21D26/045; B21D26/051; B23K11/06; F02K9/97; (IPC1-7): F02K9/97; B21D26/02; B23K11/06; F02K9/64
Domestic Patent References:
| JP4301168A | ||||
| JP6010766A |
Attorney, Agent or Firm:
Shin Ishikawa