Restoration of Steam Turbine Last Stage Rotor Blades by Laser Surfacing

被引：0
|
作者：
Nasteka D.V. [1 ]
Grachev O.E. [2 ]
Silevich V.M. [3 ]
Lebedeva A.I. [4 ]
机构：
[1] JSC Quartz Group, Moscow
[2] PJSC Unipro, Moscow
[3] OJSC NPO TsKTI, St. Petersburg
[4] National Research University MEI (NIU MEI), Moscow
来源：
Power Technology and Engineering | 2019年 / 53卷 / 02期
关键词：
blade restoration; erosion damage; laser-powder surfacing; rotor blades; steam turbine;
D O I：
10.1007/s10749-019-01061-5
中图分类号：
学科分类号：
摘要：
Technology is provided for restoring erosion damaged rotor blades of the last stages of steam turbine low-pressure cylinders (LPC) using laser-powder surfacing and application of an erosion-resistant coating. For this method there is typically low heat input into the blade basic metal, which improves its restoration reliability. Results are obtained for comprehensive experimental studies on specimens and blades, confirming the high quality of welded joints obtained by laser surfacing of nickel alloy proposed for restoring the blade profile of blade steels ÉI961-Sh and 15Kh11MF-Sh, and application of a stellite-6 erosion-resistant coating. The possibility is concluded of using the laser-powder surfacing method during refurbishment of steam turbine LPC rotor blades. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
引用
下载
收藏
页码：208 / 212
页数：4
相关论文
共 50 条
  • [21] SEPARATION OF WATER FILM FROM LAST STAGE GUIDE BLADES OF 1000 MW STEAM TURBINE
    Hoznedl, Michal
    Tajc, Ladislav
    Bednar, Lukas
    Macalka, Ales
    Zivny, Antonin
    PROCEEDINGS OF THE ASME TURBO EXPO: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, 2019, VOL 8, 2019,
  • [22] Vibration Stress of the Last-Stage Blades of a Steam Turbine After Repair of a Single Blade
    M. G. Shulzhenko
    A. P. Zinkovskyi
    A. S. Olkhovskyi
    Strength of Materials, 2022, 54 : 565 - 575
  • [23] Erosion Process of 66 MW Steam Turbine Rotor Blades
    Stanisa, Branko
    Schauperl, Zdravko
    Snajdar, Mateja
    MATERIALS TESTING, 2012, 54 (03) : 157 - 162
  • [24] EXPERIMENTAL INVESTIGATION OF A LOW PRESSURE MODEL STEAM TURBINE WITH SUPPORTING RIB IN CLOSE VICINITY TO THE LAST STAGE ROTOR BLADES AT VARYING OPERATING CONDITIONS
    Mueller, Fabian F.
    Schatz, Markus
    Vogt, Damian M.
    Rehnsch, Andreas
    PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 8, 2016,
  • [25] Vibration Stress of the Last-Stage Blades of a Steam Turbine After Repair of a Single Blade
    Shulzhenko, M. G.
    Zinkovskyi, A. P.
    Olkhovskyi, A. S.
    STRENGTH OF MATERIALS, 2022, 54 (04) : 565 - 575
  • [26] Numerical Simulation of Suction Slot Structure on the LP Last Stage Stationary Blades of Steam Turbine
    Cai Sun
    Xie Dan-mei
    Tan Cheng-cheng
    Qian Yong
    Zhao Xian-bo
    Li Wang-fan
    2010 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC), 2010,
  • [27] Design of water erosion test-bed for a steam turbine's last stage blades
    Xu, Wanli
    Wang, Jiadao
    Chen, Darong
    Liu, Fengbin
    Qinghua Daxue Xuebao/Journal of Tsinghua University, 2010, 50 (08): : 1201 - 1204
  • [28] EROSION BEHAVIOR AND MECHANISMS FOR STEAM-TURBINE ROTOR BLADES
    STANISA, B
    IVUSIC, V
    WEAR, 1995, 186 (02) : 395 - 400
  • [29] Last- stage blades of large steam turbines
    HOHN A
    NOVACEK P
    1972, 59 (01): : 42 - 53
  • [30] LAST-STAGE BLADES OF LARGE STEAM TURBINES
    HOHN, A
    NOVACEK, P
    BROWN BOVERI REVIEW, 1972, 59 (01): : 42 - &
12345