阀套Cr12MoV磁粉检测的磁痕显示

详细信息

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

摘要: 某阀套（材料Cr12MoV）的磁粉检测过程中，内壁出现线性磁痕显示。经过荧光渗透检测复验与磁粉检测复验，结合金相检验结果，对形成内壁线性磁痕的原因进行了分析。结果表明，组织中存在的碳化物带状偏析条带是磁粉检测时出现线性磁痕显示的原因。
- 阀套 /
- 偏析 /
- 磁粉检测 /
- 磁痕
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.
- valve sleeve /
- segregation /
- magnetic particle testing /
- magnetic particle indication

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