Eddy Current Testing of Rods by Means of a Rotor System

The inspection system is based on a basic frame, which integrates drive rollers for rod transport by default. It is designed for hosting several test stations, so the eddy current rotor system EC-130, a ULAS test system for material sorting, a ULAD test tsystem with differental probe and magnetising yoke, but also an ultrasonic system (optional). The test stations are mounted on motorized support tables (moveable horizontally and vertically). The rotor EC-130 is adjustable to the rod geometry (diameter range: 30 ... 130 mm). The high rotor speed of up to 3000 rpm allows correspondingly high transport speeds while ensuring gapless scanning.

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Features

  • rotor head equipped with 2 differential probes (180° apart)
  • overlapping scan line (covering 110 %), non-contact
  • electronic distance compensation (DCOMP) counteracting variations of probe distance
  • adjustable to rod diameter (30 … 130 mm)
  • rotational speed: max. 3000 rpm
  • probe protection nozzle at the inlet and outlet area
  • robust basic frame
  • driven double-pinch roller (V-shaped) for rod transport
  • controllable transport speed  (0.2 … 2 m/s / 0.65 … 6.5 ft/s)
  • support tables for test stations: moveable horizontally by means of pneumatics (maintenance position) and adjustable vertically (adaption to rod diameter)
  • automatic adaption to the rod diameter by lifting the rotor system
  • automatic setting of rotational speed depending on rod diameter
  • control of transport speed
  • EloLine analysis software for automated evaluation and documentation
  • dual-channel colour marking unit (labeling of “bad” parts)

System Data

  • multi-channel eddy current instrument PL500, equipped with universal I/O interface (16 digital inputs and 16 digital outputs) to connect with the master PLC
  • rotor system EC130
  • control cabinet with industrial PC (Windows, network-compatible)
  • EloLine software
  • operating console with PLC and and touch screen
  • test mechanics (frame, support tables for test stations, driven V-rollers)
  • colour marking unit
  • sorting station with ULAS test coil, option
  • ULAD coil test unit with magnetising yoke (option)
  • ultrasonics test system (option)

Products in use

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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