equipment is for the ultrasonic inspection of seamless gas cylinders.
The ultrasonic inspection is achieved using a single fixed Water
Column Coupled Probe (WCCP) unit for both the longitudinal and
circumferential shear wave flaw detection in addition to the compression
wave thickness monitoring.
sizes 140mm to 400mm diameter with a
maximum length of 2500mm
oblique and transverse ultrasonic shear wave testing
or Manual load system
Gas Cylinder to be inspected is placed on to the rolls that rotate
the part during the inspection. This can be done automatically
or manually depending of the system specified.
loaded the cylinder starts to rotate; once it is up to speed the
single WCCP unit will scan along the parallel side of the bottle.
the end of the scan, the bottle will stop rotating and the WCCP
unit retracted. The test results, including whether the cylinder
is acceptable or not will be displayed and can be stored if required.
These results can also be printed.
Ultrasonic Probe Units
WCCP unit has been developed to replace existing water jet type
probe units and to obtain an inspection signal to noise ratio
similar to immersion systems. Units have been supplied for longitudinal
shear wave and compression wave inspection
units are very compact and permit multi-probe heads to be made
using a simple modular construction. The latest WCCP twin units
can configure ten probes in a 100mm length. The index between
probes is selected to ensure full interlacing of probe scans.
Standard multiple probe configurations have been defined such
that full interleaving of probe scans is achieved for detection
of a specific minimum flaw length or full ultrasonic coverage.
The WCCP units offer the following advantages:
Units applied to product top surface to give easy access for
signal to noise ratio with performance similar to that of immersion
adjustment when changing tube diameters
immersion tank required
within 20mm of the product ends, with instantaneous coupling
end detection facilities using small receiver probes to monitor
Cylinder Inspection Software
The gas cylinder
inspection software is designed to perform several functions critical
to the integrity of the overall inspection system.
Test information, and messages, where feedback is given to the
operator, about the state of the system together with messages.
defect areas graphics showing the defects detected by the all
of the shear wave transducers in the system. These are displayed
in different colours as per the key shown to the side of the
C-Scan graph displaying the thickness readings from the compression
wave inspection. The thickness is displayed in different colours.
The thickness range covered by each colour is user adjustable,
using a simple set-up dialog.
Main Screen of the gas cylinder inspection software is shown above.
different gas cylinder inspection systems are available;
- A Fully Automatic
System that is designed to interface to an inlet and outlet conveyor
on the cylinder production line, as shown above.
- A manual
system that requires the operator to load the cylinder onto the
system and then initiate the inspection sequence.
of these systems can be configured for varying cylinder diameters,
lengths and weights.
MORE INFORMATION PLEASE SEE:
STATISTICAL PROCESS CONTROL APPLIED TO AUTOMATIC ULTRASONIC INSPECTION
ULTRASONIC INSPECTION EQUIPMENT
FOR SEAMLESS GAS CYCLINDERS
(pdf format) from our Technical Papers Library
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