TPT March 2023


Tube welding inspection by eddy current with sectorial magnetising unit

The sectorial magnetising unit can inspect diameter range tubes from 5 to 300mm ( 3 / 16 to 12"). The line speed is unlimited. The main advantages of the system are the easy integration into existing industrial lines, the high sensibility, the high inspection speed, the low maintenance of the equipment and the robust construction and the adjustable magnetic field. Electronic instruments, such as Zet@Micro or Zet@Premium, can be associated with the sectorial magnetising unit. They will allow the real-time display of the inspection results. Thanks to the production software, all results will be recorded on a complete inspection report. The sectorial magnetising unit is always along with an encoder and a marking system, which allows it to locate the defects on the product.

probe can inspect it. It also performs long defects detection (discontinuities or open weld). The welded tubes passes under a sectorial probe (differential and/or absolute mode) that matches the shape surface. When a flaw is detected, the coil’s impedance will change and trigger an alarm on the control screen. The results are either shown through a time base display (in real time) or displayed thanks

CONTROLE Mesure Systemes designs and develops a range of non-destructive testing equipment by ultrasonic and eddy current to inspect tubes, bars, wires and plates. The company offers an eddy current system to detect small flows (holes and cracks) or to identify discontinuities on welds: the sectorial magnetising unit. This system produces magnetic saturation concentrated in the weld area, so that an eddy current sectorial

to an impedance plan with a real time alarm management.

Complete non-destructive testing equipment including a sectorial magnetising unit

Controle Mesure Systemes

Ultrasonic ERW and SAW pipes and strips inspection equipment

Sofratest also offers different inspections: strip UT inspection – the strip inspection refers to

SOFRATEST designs and manufactures non-destructive testing equipment for ERW and SAW steel pipes and strips through Ultrasonic. The company is now part of the Controle Mesure Systemes Group, specialised in the manufacture of non-destructive testing systems by eddy current and ultrasonic for tubes, pipes, plates and wires. Sofratest is able to inspect different kind of pipes: electrical resistance welded (ERW) – this manufacturing process involves the use of resistance heating and high pressure in order to produce a longitudinal weld. Submerged arc welding (SAW) – this manufacturing refers to a welding process with added material. This refers to: SSAW: for a spiral welding; or LSAW: for longitudinal welding.

SSAW off-line inspection

for ERW and SAW rolled welded pipes. Both inspections allow the user to detect longitudinal, transversal defects in the weld seam and to detect lamination defects in the heat affection zone (HAZ). All of the turnkey solutions can be customised to meet the specific requirements of the customer. Sofratest can either inspect the weld – or the weld and the HAZ – or even the full body and the edges. All configurations are possible to inspect pipes and strips.

a lamination detection on the strip and strip edges. This equipment allows for either partial inspection (oscillation of the transducers) or full body. Scarfing monitoring system dedicated to ERW pipe inspection – the scarfing monitoring process (I/O profile) refers to a scrap reduction tool for the ERW pipes. This system has to be installed as close as possible to the weld pressure rolls. This system monitors the weld profile in order to be sure that the overall weld thickness is within tolerance. Online and offline weld inspections for ERW and SAW pipes – Sofratest offers offline and online welded inspections



MARCH 2023

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