JPS5798658A - Runner of water turbine with superior cavitation erosion resistance - Google Patents
Runner of water turbine with superior cavitation erosion resistanceInfo
- Publication number
- JPS5798658A JPS5798658A JP55173822A JP17382280A JPS5798658A JP S5798658 A JPS5798658 A JP S5798658A JP 55173822 A JP55173822 A JP 55173822A JP 17382280 A JP17382280 A JP 17382280A JP S5798658 A JPS5798658 A JP S5798658A
- Authority
- JP
- Japan
- Prior art keywords
- runner
- water turbine
- phase
- erosion resistance
- cavitation erosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
PURPOSE: To provide superior mechanical strength and toughness to the runner of a water turbine made of martensite stainless cast steel consisting of a specified percentage each of Fe, Cr and Mn by forming a carburized layer of ε phase or the like on the surface part of each vane of the runner.
CONSTITUTION: A carburized layer having a structure contg. ε phase or austenite phase and not contg. ferrite phase is formed on the surface part of at least each vane of the runner of a water turbine made of martensite stainless cast steel consisting of, by wt., 11.0W14.0% Cr, 2.0W9.0% Mn and the balance Fe. Especially by regulating the stainless cast steel to a composition consisting of, by wt., ≤0.1% C, ≤1.0% Si, 2.0W9.0% Mn, 0.5W8.0% Ni, 11.0W14.0% Cr and the balance essentially Fe or further contg. ≤2.0% Mo, the runner has high mechanical strength and toughness. The carburized layer contains 0.1W0.9% C. Thus, a runner with superior cavitation erosion resistance is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55173822A JPS5798658A (en) | 1980-12-11 | 1980-12-11 | Runner of water turbine with superior cavitation erosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55173822A JPS5798658A (en) | 1980-12-11 | 1980-12-11 | Runner of water turbine with superior cavitation erosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5798658A true JPS5798658A (en) | 1982-06-18 |
Family
ID=15967786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55173822A Pending JPS5798658A (en) | 1980-12-11 | 1980-12-11 | Runner of water turbine with superior cavitation erosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5798658A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187577A (en) * | 1985-02-14 | 1986-08-21 | Meidensha Electric Mfg Co Ltd | Runner of water turbine |
| JPS61138872U (en) * | 1985-02-20 | 1986-08-28 | ||
| JPH02140465A (en) * | 1988-11-22 | 1990-05-30 | Hitachi Ltd | Water wheel runner and its manufacture |
-
1980
- 1980-12-11 JP JP55173822A patent/JPS5798658A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187577A (en) * | 1985-02-14 | 1986-08-21 | Meidensha Electric Mfg Co Ltd | Runner of water turbine |
| JPS61138872U (en) * | 1985-02-20 | 1986-08-28 | ||
| JPH02140465A (en) * | 1988-11-22 | 1990-05-30 | Hitachi Ltd | Water wheel runner and its manufacture |
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