TEST STUDY ON REPAIR AND PROTECTION FOR WATER EROSION DAMAGE OF FINAL-STAGE BLADES IN STEAM TURBINES

LI Wei1; LI Taijiang1; WANG Shaodong2; LIU Qingfu3; WANG Bo11.Xi'an Thermal Power Research Institute Co Ltd

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

TEST STUDY ON REPAIR AND PROTECTION FOR WATER EROSION DAMAGE OF FINAL-STAGE BLADES IN STEAM TURBINES

更新时间：2025-09-28

- TEST STUDY ON REPAIR AND PROTECTION FOR WATER EROSION DAMAGE OF FINAL-STAGE BLADES IN STEAM TURBINES
- Thermal Power Generation Vol. 40, Issue 1, Pages: 40-44(2011)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能丹东电厂
  3. 华能上安电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK263.3
- Published：2011
- 稿件说明：
移动端阅览
LI Wei1, LI Taijiang1, WANG Shaodong2, et al. TEST STUDY ON REPAIR AND PROTECTION FOR WATER EROSION DAMAGE OF FINAL-STAGE BLADES IN STEAM TURBINES[J]. Thermal power generation, 2011, 40(1): 40-44.
DOI：

LI Wei1, LI Taijiang1, WANG Shaodong2, et al. TEST STUDY ON REPAIR AND PROTECTION FOR WATER EROSION DAMAGE OF FINAL-STAGE BLADES IN STEAM TURBINES[J]. Thermal power generation, 2011, 40(1): 40-44. DOI：

摘要

基于电厂汽轮机末级动叶片水蚀损伤机理

对受损叶片进行手工钨极氩弧焊(GTAW)修复

并对焊接接头的组织性能进行试验。结果表明

焊缝硬度满足使用要求

焊接接头力学性能优良

焊接接头抗高周疲劳性能满足叶片工况要求。为了提高叶片抗水蚀性能

延长叶片使用寿命

对比分析了叶片超音速火焰喷涂NiCr和WC-Co金属陶瓷2种不同涂层的组织结构、机械性能、热震性能、磨粒磨损及冲蚀磨损性能。与WC-Co涂层相比

NiCr涂层具有优异的耐磨性能及抗冲蚀性能

可作为耐水蚀涂层应用在汽轮机末级动叶片上。

Abstract

Based on the mechanism of water erosion damage occurred on the final-stage blades in steam turbines

the damaged blades have been repaired by using gas tungesten arc welding(GTAW)

and the microstructure performance of welded joints being tested.Results show that the hardness of weld joints satisfies the requirements in application

the mechanical properties of weld joints is good

the high-cycle fatigue resistant behavior of the weld joints can meet the requirement of blades in service.In order to enhance the water erosion resisting performance of said blades to lengthen their service life

the microstructure

the mechanical properties

the thermal shocking behavior

the abrasive wear and erosion damage properties of two different coatings NiCr and WC-Co ceramet sprayyed using high speed oxygen fuel have been compared and analysed.Compared with WC-Co coatings

the NiCrceramet coating has excellent resistance to abrasion and erosion

it can be used on final-stage blades in steam turbines as water-resistant coatings.

关键词

Keywords

references

Views

358

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Optimization calculation for sliding pressure of steam turbine with extraction for heating

LVDT faults auto-monitoring technology for turbine governing valve based on video processing

Economy analysis for an ultra supercritical 1 000 MW unit with EC-BEST thermal dynamic system

Load control of small steam turbine based on double fuzzy decoupling control

Related Author

WEN Le

YANG Xinmin

WANG Weifeng

XUE Zhiheng

ZHANG Jiangfeng

YIN Feng

SU Ye

WANG Zixiang

Related Institution

Xi’an Thermal Power Research Institute Co., Ltd.

State Gird Zhejiang Electric Power Research Institute

State Gird Zhejiang Electric Power Corporation

西安热工研究院有限公司

哈尔滨汽轮机厂有限责任公司

AI问答

⁰