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Title:
TURBINE BLADE DESIGNING METHOD, TURBINE BLADE MANUFACTURING METHOD, AND TURBINE BLADE
Document Type and Number:
WIPO Patent Application WO/2017/168777
Kind Code:
A1
Abstract:
Provided is a turbine blade designing method for designing a turbine blade, wherein: correlation data associating heating temperature range, creep strength, and crystal grain size is prepared in advance; and the method is provided with a temperature distribution acquisition step S11 in which temperature distribution data relating to temperature distribution in a heated turbine blade is acquired, a creep strength acquisition step S12 in which creep strength distribution data relating to the distribution of creep strength required of the heated turbine blade is acquired, and a crystal grain size setting step S13 in which, on the basis of the temperature distribution data and the creep strength distribution data, the crystal grain size in a high-temperature site that is in the diffusion creep temperature range for the turbine blade is set to be coarser than a reference crystal grain size used as a reference, and the crystal grain size in a low-temperature site that is in the dislocation creep temperature range for the turbine blade is set to be finer than the reference crystal grain size.

Inventors:
KANEKO, Hideaki (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
YAMAMOTO, Kenji (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
KARATO, Takanori (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
HIRATA, Norifumi (3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
FUJITA, Naoya (3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
Application Number:
JP2016/074367
Publication Date:
October 05, 2017
Filing Date:
August 22, 2016
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
F01D5/28; B22D27/04; C21D9/00; C22F1/10; F01D25/00
Foreign References:
JPH034301B21991-01-22
JPH08200001A1996-08-06
US3790303A1974-02-05
JPH10317105A1998-12-02
JPS5557369A1980-04-28
JP2002331353A2002-11-19
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (Toranomon Mitsui Building, 8-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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