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Steel plate testing trolley

Introduction to
Ultrasonic Inspection

Al-Fin insert
diesel piston bond
inspection system

Seamless gas
cylinder inspection

Caster roll
and renovation

Steel plate
testing trolley

Systems software
and flaw detector

Spiral drive bar
and tube testing

Rotating bar
and tube testing

Scanning bar
and tube testing

Piston inspection
package for Al-Fin
insert pistons

C-scan package
for X-Y scanning

Chart recorder
package for
NDT systems

'Qualiron' ductile
iron metal
quality tester

High performance
ultrasonic flaw
detector for
systems applications

8 or 4 channel
ultrasonic flaw
detector for
systems applications

Ultrasonic Inspection

This equipment is a convenient and easily mobile trolley which is manouvered around the plate to ultrasonically inspect plate products.

Available as a 1, 4, 8 or 16 channel system

Can test up to a band 400mm wide in one pass

Excellent near and far surfaces resolution of 2mm

Able to view both flaw and time of flight information for all channels in real-time while scanning

Can generate a C-Scan of an area on the plate

Our range of plate inspection trollies have been designed specifically to have a sensitivity such that a 6mm flat bottomed hole to within 2mm of the near and far surface of the plate will be detected. The equipment consists of a wheeled trolley fitted with the following components:

  • 3-wheeled inspection unit designed for both umbilical or on-board electrical power and ultrasonic couplant supplies.
  • 1, 4, 8 or 16-Channel ultrasonic Probe Head fitted with a similar number of ultrasonic transducers each individually sprung loaded, with wear shoes.
  • Industrial grade portable computer.
  • 1, 4, 8 or 16-Channel ultrasonic flaw detector system, where the A-Scan is displayed on the computer.
  • Single channel hand transducer with couplant feed for manual defect verification.

These trollies are pushed over steel plate ensuring the surface area is completely covered, while, the ultrasonic system monitors the signal from the transducers in the probe head for detection of defective areas. A band of up to 400mm in width, for the 16-channel system is covered on each pass along the plate.

A report file including Plate serial number is set up initially to store all required test information. The plate is then tested. The software, displays each channel as a bar graph. Defective areas are alarmed within the software in the form of signal level bar graphs and alarm gates for each transducer channel. These are displayed and updated continuously during the scanning process.

Any areas of confirmed local defects can be logged into the reporting file by means of a C-Scan of the area along with X-Y co-ordinates manually entered. This C-scan facility has a limited single strip range as it is only intended for local defect reporting.

The reporting file may be downloaded and viewed, including any C-Scans that may have been performed, on any PC that conforms to the minimum required specifications and is loaded with the report viewing software supplied.

Plate Testing Software

The plate testing software is designed to show a real-time display of the amplitude of the signal within the gate, in the form of a bar graph. The display colour of this amplitude changes if the signal is above the pre-set threshold level.

The position of any flaw is indicated by the time-of-flight bar graphs which change colour based on the depth of the flaw within the plate.

The colours for both above and below the flaw threshold can be pre-set by the user. Also the colour range for the time-of-flight bar graphs and the C-Scan are user pre-set.

Two separate alarms are provided, one DEFECT alarm, which indicates that a channel has exceeded the preset threshold. The other, BACKWALL, which indicates, that there is a loss, for whatever reason, of the back wall signal.

The Main Screen of the plate testing software is shown above.

A typical C-Scan from the plate testing software is shown above.

To obtain this information as an Adobe Acrobat document Click Here.

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