The micro-crack for sucker rod is inspected by magnetic flux leakage inspection by now, but it is not good for accuracy and sensitivity.

 
  • 針對目前漏磁檢測抽油桿微裂紋的精度和靈敏度不高的現狀,提出一種通過(guò)拉伸抽油桿使微裂紋張開(kāi)后的漏磁檢測法。
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