Flash trimming monitoring on ERW0 pages
GE Inspection Technologies Ultrasonics
Krautkramer Testing Machines
Flash trimming monitoring
on ERWðmpipes
Monitoring the flash trimming
on longitudinal weld seams of
ERW-pipes
For a user of welding lines for the
production of ERW-pipes it is important
to see whether the trimming tool,
responsible for removal of the inside
flash, is working correctly. Using the
testing machine which we developed,
this monitoring is made directly after
welding and not after the tubes have
been cut. Therefore this testing machine
is primarily a system for monitoring and
control of the production process.
For flash trimming monitoring: OSK
The system operates with an oscillating
immersion probe which measures the
wall thickness in the area of the weld.
As an alternative a phased array system
can be used. The advantage of the flash
trimming monitoring with phased array
is that there is no mechanical movement.
Probe switching is done electronically
via a time delay.
The result is displayed on a monitor as a
topographical presentation of the inside
tube surface. Irregularities are immediately
recognized thus enabling direct
process control.
Oscillation
Probe
Water delay
Wall
Flash trimming monitoring
in the production line
Test
mechanism
lowered