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MA Li, QIU Bin, ZHAO Peng. Magnetic particle indication on magnetic particle testing for valve sleeve (Cr12MoV)[J]. Nondestructive Testing, 2021, 43(4): 68-70. DOI: 10.11973/wsjc202104016
Citation: MA Li, QIU Bin, ZHAO Peng. Magnetic particle indication on magnetic particle testing for valve sleeve (Cr12MoV)[J]. Nondestructive Testing, 2021, 43(4): 68-70. DOI: 10.11973/wsjc202104016
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Magnetic particle indication on magnetic particle testing for valve sleeve (Cr12MoV)

  • 1. Sichuan Keyuan Testing Center of Engineering Technology, Chengdu 610091, China;

  • 2. Sichuan Aerospace Changzheng Equipment Manufacturing Co., Ltd., Chengdu 610100, China;

  • 3. Sichuan Aerospace Fenghuo Servo Control Technology Co., Ltd., Chengdu 611130, China

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  • Received Date: June 23, 2020
    Graphical Abstract
    • Abstract
  • The linear magnetic particle indication was detected on the inner wall surface of valve sleeve (Cr12MoV) in magnetic particle testing process,and the reason of inducing such indication was analyzed by the reinspection of fluorescent penetrant testing and the reinspection of magnetic particle testing and metallographic examination. The results show that the linear indication was caused by carbide zonal segregation of banded structure in the microstructure.
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    • References (5)
  • [1]
    侯彩云, 宗铎, 王志忠, 等. Cr12MoV模具断裂原因分析[J].热加工工艺,2010,39(20):198-200.
    [2]
    叶代平, 苏李广.磁粉检测[M].北京:机械工业出版社,2004.
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    叶代平. 磁粉检测[M].北京:机械工业出版社,2019.
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    宋志哲. 磁粉检测[M].北京:中国劳动社会保障出版社,2007.
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    韩艳春. 440C材料零件表面特殊磁痕的原因分析[J].无损检测,2014,36(3):39-41.
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