| 汽轮机末级叶片表面防水蚀处理工艺及发展 |
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| 引用本文： | 胡平.汽轮机末级叶片表面防水蚀处理工艺及发展[J].表面技术,2008,37(6):78-80. |
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| 作者姓名： | 胡平 |
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| 作者单位： | 广东电网公司电力科学研究院,广东,广州,510600 |
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| 摘 要： | 针对国内桌汽轮机厂生产的135MW机组汽轮机频频在投运后第1次检修时,即发现低压转子末级叶片进汽边侧存在多条裂纹的情况,介绍了汽轮机末级叶片的防水蚀表面处理工艺的种类及发展,总结了末级叶片的表面防护措施可分为局部加覆盖层和表面淬硬两大类.对各种处理工艺的特点、可靠性、防护层的性能要求、质量检查及测试方法进行了探讨,并根据今后大容量机组的特点,提出了叶片表面防护工艺的发展方向.
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| 关 键 词： | 汽轮机 末级叶片 水蚀 表面处理 |
| 收稿时间： | 7/4/2008 12:00:00 AM |
| 修稿时间： | 2008/12/10 0:00:00 |
Development of Anti-erosion Surface Treatments Used in Last Blades of Steam Turbine |
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| HU Ping.Development of Anti-erosion Surface Treatments Used in Last Blades of Steam Turbine[J].Surface Technology,2008,37(6):78-80. |
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| Authors: | HU Ping |
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| Affiliation: | Guangdong Power Testing and Research Institute, Guangzhou 510600, China |
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| Abstract: | Based on cracks occurred on last blades of 135MW steam turbines in one-year operation time, anti-erosion surface treatments used in last blades of steam turbine were introduced. Protecting treatments in last blades of steam turbine included partial overlay and surface quenchhardening. The characteristic, reliability, performance requirements and testing methods of protecting coatings were discussed. The development trend of protecting treatments was put forward as well. |
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| Keywords: | Steam turbine Last blade Erosion Surface treatment |
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