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  6. Defect detection of capacitor fine tube welds using the DefHi ECA probe.

Defect detection of capacitor fine tube welds using the DefHi ECA probe.

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last updated:Mar 12, 2026

Eddyfi Technologies ジャパンオフィス
Eddyfi Technologies ジャパンオフィス
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A reliable C-scan display enables rapid detection, sizing, and classification of defects in welds.

Condenser tubes made from seam-welded thin pipes are generally cheaper than conventional condensers that use seamless pipes. However, there is a significant weakness in the welding along the axis of the pipe. Currently, thin seam-welded pipes made of SUS304 and SUS316 stainless steel or titanium are commonly used in condensers. These thin pipes are prone to defects along the weld seam, such as axial cracks, blowholes, poor melting, and poor fusion. *For detailed information, please refer to the PDF materials. For more information, feel free to contact us.*

    probe
DefHi

Defect detection of capacitor fine tube welds using the DefHi ECA probe.

DefHi ECAプローブ1.png
DefHi ECAプローブ1.png DefHi ECAプローブ2.png DefHi ECAプローブ3.png
  • Related Link - https://www.eddyfi.com/
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Defect detection of condenser capillary welding joints using DefHi ECA probe [Application Note]

Defect detection of condenser capillary welding joints using DefHi ECA probe [Application Note]

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Application Note: DefHi ECA Probe for Defect Detection in Capacitor Fine Tube Welds [PDF Download Available]

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Currently, seamless welded tubes are commonly used in capacitors. These tubes are prone to defects along the weld seam, such as axial cracks, blowholes, poor fusion, and inadequate melting. These defects make it difficult to achieve accurate sizing and classification assessments with standard eddy current bobbin probes. The reason is that the bobbin coil provides an average response over 360°, and the proportion of the weld defects relative to the entire tube wall being inspected by the probe is very small. To address this issue, Eddyfi Technologies has developed the "DefHi Probe," an eddy current array probe that uses multiplexing.

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Eddyfi

Eddyfi Technologies ジャパンオフィス

Industrial Electrical Equipment

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Eddyfi Technologies contributes to improving productivity in manufacturing, various plants, and inspection service providers by offering the world's leading non-destructive testing (NDT) technologies, as well as promoting a safe society and environmental protection. The company focuses on providing advanced phased array ultrasound and eddy current array technologies, along with various ultrasonic and electromagnetic application technologies, including inspection equipment, sensors, software, and robots for key industries such as aerospace, energy, mining, power, and transportation. Eddyfi Technologies has over 650 employees across 13 centers of excellence (technology hubs) and sales offices worldwide, with NDT technology experts stationed at all locations.

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