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 -

GB Inspection Systems Ltd.
A leading UK manufacturer of Ultrasonic Probes, Accessories, Supplier of NDT Equipment and more.

1487 views
Technical Discussions
Kåre Johansson
Kåre Johansson
00:08 Dec-13-2000
Ferrite meassurement of tube/tubesheet welds

One of our contractors wants to verify the ferrite meassurements of duplex stainless steel tube to tubesheet welds using magnetic ferrite meassurements. Does anyone have experience with this type of meassurements or have an opinion on what correction factors will have to be applied to the meassured value? The material is 1.4462, UNS S31803. We are agreeing on hte metallographic tests to be done on the welding procedure and that we will be taking magnetic meassurements on the welding procedure, but this does not give us enough data to be able to set limits we can confidently work with in the shop.


    
 
 
Danny Wang
Engineering
Spectrum Inspection Engineering, PE, USA, Joined May 2000, 2

Danny Wang

Engineering
Spectrum Inspection Engineering, PE,
USA,
Joined May 2000
2
06:29 Dec-13-2000
Re: Ferrite meassurement of tube/tubesheet welds



    
 
 
rajeev chaudhari
NDT Inspector
offshore testing & inspection services (I) pvt ltd, India, Joined Dec 2000, 17

rajeev chaudhari

NDT Inspector
offshore testing & inspection services (I) pvt ltd,
India,
Joined Dec 2000
17
09:29 Dec-15-2000
Re: Ferrite meassurement of tube/tubesheet welds
Regarding your requirement. we have the instrument which can measure ferrite of duplex stainless steel material. The instrument is handy. Calibration blocks available for 3.2, 8, 36, 100 % ferrite content.
The job can be performed within short period.
should you require any clarrification, please revert back.
please contact:
Offshore Testing & Inspection services (I) pvt. Ltd.
W-147, MIDC Pawane, Thane Belapur Road,
Navi Mumbai 400 703 INDIA
Tel: +91 22 7670874
+91 22 7681946
Fax: +91 22 7633982
+91 22 5561249
email: otislab@vsnl.net
ohcs@giasbm01.vsnl.net.in

: One of our contractors wants to verify the ferrite meassurements of duplex stainless steel tube to tubesheet welds using magnetic ferrite meassurements. Does anyone have experience with this type of meassurements or have an opinion on what correction factors will have to be applied to the meassured value? The material is 1.4462, UNS S31803. We are agreeing on hte metallographic tests to be done on the welding procedure and that we will be taking magnetic meassurements on the welding procedure, but this does not give us enough data to be able to set limits we can confidently work with in the shop.




    
 
 
Rainer Meier
R & D
retired from intelligeNDT Systems & Services, Germany, Joined Nov 1998, 15

Rainer Meier

R & D
retired from intelligeNDT Systems & Services,
Germany,
Joined Nov 1998
15
09:35 Dec-15-2000
Re: Ferrite meassurement of tube/tubesheet welds
: One of our contractors wants to verify the ferrite meassurements of duplex stainless steel tube to tubesheet welds using magnetic ferrite meassurements. Does anyone have experience with this type of meassurements or have an opinion on what correction factors will have to be applied to the meassured value? The material is 1.4462, UNS S31803. We are agreeing on hte metallographic tests to be done on the welding procedure and that we will be taking magnetic meassurements on the welding procedure, but this does not give us enough data to be able to set limits we can confidently work with in the shop.

The most reliable measurement of the ferrite content in ss duplex steels for our opinion
is done by metallography.The evaluation of the ferrite content by magnetic measurements
is affected by

-The poor sensitivity of comercial available ferrite gauges (e.g. Förster probe)at high
ferrite contents (approx.>30%)

-The ferromagnetic properties of the ferrite phase, which will vary depending on the
chemical composition of the material, the heat treatment, and the welding heat affection.

Nevertheless, a special eddy current sensor, adjusted for high ferrite contents, and
individually calibrated with the procedure/work test piece, should allow for a satisfiing
measurement of the ferrite content of the component.

Rainer


    
 
 

Product Spotlight

Mentor UT – Ultrasonic Phased Array Flaw Detector

With Mentor UT, you get an accessible and efficient inspection experience. Create user-defined menus
...
and workflows (“apps”) with GE’s desktop software Mentor Create to ensure consistency, even for the most complex inspections, every time. Mentor UT is the first UT device to easily allow wireless connectivity and live streaming, so you get second opinions when you need them most—in real-time.
>

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
>

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.
>

SONOAIR - air-coupled Phased Array Ultrasonic Inspection System

For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors,
...
the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers.
>

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
s