|Mikael Eriksson |
Ultrasonic equipment for testing of billets.
Is there any automatic ultrasonic equipment on the market that can detect defects in material of a billet/roller which is hardened and ground?
|Godfrey Hands |
PRI Nadcap, United Kingdom, Joined Nov 1998, 289
Re: Ultrasonic equipment for testing of billets. : Is there any automatic ultrasonic equipment on the market that can detect defects in material of a billet/roller which is hardened and ground?
Ultrasonics can certainly detect defects inside billet material and also inside rollers.
Working for SKF, I assume that you are trying to detect very small defects.
High Frequency Ultrasonics (e.g. 80 MHz) can detect Oxide inclusions that are alarger than about 40 Microns diameter, and located between about 0.8 and 2.0 mm beneath the ground surface. This is in a laboratory.
In production, and when you are talking about Rollers (I assume that you refer again to Inclusion type defects), larger defects will be detectable, probably from 0.1 mm diameter, and a few tenths of a millimetre long.
Please contact me directly for more information.
For automated applications, we can also recommend Quasar Resonant Inspection for inspecting rollers. There is a precedent for this within your own company. I will discuss this with you privately, as some of the information is Proprietory to SKF..
With my best Regards,
|Joe Buckley, Sonatest PLc |
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 519
Re: Ultrasonic equipment for testing of billets. Billets and finished rollers are normally inspected in different ways.
Many different methods are used to verify bearing quality. Material quality should always be checked as early as possible - before money is put in. As a general rule Ultrasonics (and possibly other methods) are used to verify quality of the material before it is cut up and made into rollers. Defects appearing later in the process are most commonly the result of cracking during heat treatment or grinding. Eddy current inspection is likely to more appropriate at this later stage.
: Is there any automatic ultrasonic equipment on the market that can detect defects in material of a billet/roller which is hardened and ground?
Magnetic X-Ray Pipeline Crawler
Zhong Yi brand pipeline crawler is magnetic/micro-video controlled
crawler with DC X ray unit inst
alled for checking welding of pipeline.
Move steadily inside the pipeline 6''-60''diameter with speed of up to
18m/min, Max. moving diatance 5 kilometers and provide the efficient
inspection of the pipeline.
Lyft™: Pulsed Eddy Current Reinvented
PEC Reinvented—CUI Programs Redefined
Corrosion under insulation (CUI) is possibly the greatest u
asset integrity problem in the industry. Current methods for
measuring wall thickness with liftoff, without removing insulation,
all have severe limitations. Eddyfi introduces Lyft — a reinvented,
high-performance pulsed eddy current (PEC) solution. The patent-
pending system features a state-of-the-art portable instrument, real-
time C-scan imaging, fast data acquisition with grid-mapping and
dynamic scanning modes, and flexibility with long cables. It can also
scan through thick metal and insulation, as well as aluminum,
stainless steel, and galvanized steel weather jackets. Who else but
Eddyfi to reinvent an eddy current technique and redefine CUI
programs. Got Lyft?
NDT Master Lecturer
In the program both university professors and practitioners will give lectures, which guarantees the
oretical depth and practical inside. Academic Director: Prof. Dr. Christian Boller
The following lecturers are not complete: Prof. Tadeusz Stepinski, Prof. Wieslaw Staszewski, Prof. Frank Walther, Prof. Giovanni Bruno, Prof. Gerd Dobmann, Prof. Philippe Guy