where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

NOVO DR
develops and manufactures cutting edge Portable Digital Radiography X-ray Inspection Systems.

873 views
Technical Discussions
Mikael Eriksson
Mikael Eriksson
04:11 Apr-04-2003
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
Consultant,
PRI Nadcap, United Kingdom, Joined Nov 1998, 293

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
293
06:57 Apr-04-2003
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?
.
Dear Mikael,
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.
Godfrey@hands-ndt.co.uk

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,

Godfrey Hands.


    
 
 
Joe Buckley, Sonatest PLc
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 519

Joe Buckley, Sonatest PLc

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
519
07:13 Apr-04-2003
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.

Joe

: Is there any automatic ultrasonic equipment on the market that can detect defects in material of a billet/roller which is hardened and ground?
.



    
 
 

Product Spotlight

FAAST-PA! OEM Patented phased Array for high speed UT inspection

Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m
...
any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time.
>

Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler

The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d
...
ata improvements to tank shell inspections and other structures such as vessels and offshore installations.
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

FMC/TFM

Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
...
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window