InspecTech® A Division of InspecTech Analygas Group Inc. 450 Midwest Road, Toronto, Ontario, Canada, M1P 3A9 Tel: 416-757-1179 Fax: 416-757-8096 Email: email@example.com Web: www.inspectech.ca
Vol.7 No.2, 2012
The InspecTech Inquirer
Dates subject to change.
Back Issues of the InspecTech Inquirer are posted on our website at www.inspectech.ca.
We generally issue two editions a year.
MOTORIZED CALIBRATION TABLES FOR TEST SYSTEMS:
A NEW (OLD) CONCEPT
In 1984 InspecTech built a pair of ultrasonic test systems that included motorized
calibration tables. After the passage of over 20 years, we are now being asked to
do the same again, this time for code compliance purposes.
Much has changed in the intervening
years, mostly in the evolution of
electronics and information technology.
Today’s motorized tables include the
capability to take data in one direction
only (the direction of mill travel), or to
take bi-directional readings. Table
speed data are recorded, displayed
and included in calibration records.
Splash guards protect the operator from
flying coupling liquid. All of this is a far
cry from those original units but the
basic design was still there when we
came to blow the dust off and use it
P.S. As a footnote to this article, let us
clarify InspecTech’s position on test
codes that require calibration speed to
match mill run speeds. We believe that
the requirement is superfluous. Any
well-designed ultrasonic test system is
essentially speed independent. (It is easy
to prove this for yourself too). We believe that code committees should concern themselves
more with the transfer characteristics between a polished, well-used test piece and
a hot scaly product on the mill. However, we do not create the codes; we just endeavour
to help our customers meet them.
Above picture shows a recently commissioned motorized calibration table for an ultrasonic
on-line test unit.
FLUX LEAKAGE WELD LINE TESTING REACHES FULL POTENTIAL
Most advances are the result of slow evolution, and so it has been with our flux
leakage weld line test systems.
It is now clear that one of the better applications for flux leakage testing is in
the realm of hollow structural steel (HSS) manufacturing, where the inside weld flash
is rarely removed, and yet where a full penetration test of the weld is desired.
We now have a number of customers making HSS product, all enthusiastic users of Flux
Leakage, many of whom are qualified to make ROPS (Roll Over Protection Systems) product,
and these customers represent our fastest-growing market segment.
As this customer demand has increased, so have their requests for bigger and better
test systems. We have just shipped a flux leakage unit for use on 12” diameter product
with up to 0.5” wall thickness, and we are now accepting orders for systems with
a capability up to 0.625” (16mm) wall and any diameter.
Photograph shows a flux leakage test unit for 12” diameter, heavy wall structural
In this case a motorized calibration table was used because of the extreme weight
of the test sample
Meet The People
Greg Brown came to InspecTech as a shop helper back in 1989.
He then apprenticed with us working in our shop and studying at night school and
on day release. In this way he qualified under the Ontario apprenticeship programme
as a machinist.
Today Greg programs our NC machinery, works with outside vendors and does the final
assembly and check-out on all of our mechanical systems. In between times, he still
manages to do some machining work.
We salute his 23 years of service to the company.
Last summer we decided to change our publication cycle for the Inquirer.
We have previously published at Christmas and mid-summer; two seasons where our readers
are either on vacation or likely too busy to read our articles. Henceforth we are
publishing in spring and fall, times when we hope you will have more time to enjoy
the Inquirer. Helps us too; rather than trying to meet deadlines for copy and pictures.
For our international customers, here is a list of Canadian holidays and observances
for our offices for the next several months. Our automated answering machine can
take messages during evenings, weekends and holidays. Our offices will be closed