Weld Inspection of High-Voltage Cable Jackets

High-voltage cable jackets are manufactured of cold-formed plates (axial-welded continuous material). The multi-channel test system is placed closely behind the welding machine. The system allows to detect tiny dot-like defects as well as elongated axial defects, located in the weld. The eddy current raw data are recorded continuously and sent to the master control, together with the inspection results. Detected welding defects will be colour-coded in process by means of a colour marking device.

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  • integrated in the drawing line
  • high noise immunity (disturbing effects of the welding process)
  • fast and easy probe replacement in case of product changes
  • high sensitivity due to deploying segmented probes
  • detecting several types of welding defects
  • reliable detection of tiny dot-like welding defects as well elongated axial welding defects due to applying absolute and differential probes
  • use of circular thresholds
  • continuous data aquistion
  • generation of “bad”-part identifier for customer documentation
  • actuating of colour marking device
  • statistic report

System Data

  • 2-channel eddy current instrument Elotest IS500-Box
  • carriage for probe guidance
  • segmented probes (size depending on tube diameter: from ~ 50 mm / ~ 2″ up to ~ 150 mm / ~ 6″)
  • colour marking device
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Dillinger manufactures technologically outstanding and versatile heavy plates at the traditional Saar location. References in a wide variety of application areas are available worldwide. Especially for pipeline applications, the HST test procedure developed by ROHMANN supports the precision and consistently high quality of Dillinger products. Dillinger Hütte

Eisenwerk Brühl GmbH specializes in the development and mass production of cast iron engine blocks for the automotive industry. The company is one of the most important suppliers of cast iron ZKG for the passenger car sector. To secure the production process, i.e. for the detection of material defects, hand and line testing devices from ROHMANN are used. Eisenwerk Brühl GmbH

As a subsidiary of the Etihad Aviation Group, the company offers services in the areas of line, light and heavy maintenance. The largest service provider for commercial aircraft in the field of maintenance, repair and operation in the Middle East, uses both the ELOTEST M2 handheld tester and the ELOWHEEL 1000 rim tester (RPT16) for inspecting their aircrafts. Etihad Airways Engineering

Stüken is the world market leader for deep-drawn components, punch and deflection parts of maximum precision and reliably high quality. For automated quality assurance, i.e. for the detection of material and structure defects, Stüken uses line testing equipment, e.g. the ELOTEST PL600 from ROHMANN. Hubert Stüken GmbH & Co. KG

Lufthansa Technik offers a complete service for aircraft technical services, such as maintenance, overhaul and testing of engines and chassis. In addition to the robot-based ELOSCAN test systems, Lufthansa Technik AG also uses sensors and portable test equipment from ROHMANN at several locations in Germany. Lufthansa Technik AG

NKT is a well-established and global supplier of turnkey DC and AC cable systems, providing world-class energy transport with innovative cable solutions. To ensure the quality of its own products, NKT uses the line tester ELOTEST IS500 from ROHMANN. NKT Group GmbH

Siemens Power Generation Services provides worldwide service solutions for gas or steam turbines, generators or wind turbines to increase the efficiency, reliability and operational flexibility of plants. In its global maintenance services, the company uses a.o. the ROHMANN handheld tester ELOTEST M3. Siemens

As a traditional aviation manufacturing and maintenance company, Zeppelin offers professional QM services to the global aviation industry, the automotive industry and mechanical and plant engineering. For the aerospace sector, Zeppelin carries out ZFP training courses using ROHMANN handheld testers Elotest M3, test probes and calibration standards. Zeppelin Systems GmbH

ZF is a leading global technology group in driveline and chassis technology as well as active and passive safety technology. ZF uses a wide range of innovative solutions from ROHMANN for various testing tasks in the field of crack and structural testing. ZF Friedrichshafen AG