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Technical Discussions
jagan
Engineering,
Saudi Arabia, Joined Dec 2011, 23

jagan

Engineering,
Saudi Arabia,
Joined Dec 2011
23
14:18 Apr-04-2015
Inconnel625 2" 8.74mm best technique for meterial defects???

Gents,

Suggest a best technique to find materiel defect for 2inch 8.74mm inconnel625 meterial
To cover overall pipe from id to od, need to inspect entire length.

As of me IRIS is suitable
need other opinions in dis regards.

Thanks.

    
 
 Reply 
 
Johann Hinken
FI Test- und Messtechnik GmbH, Germany, Joined May 2014, 18

Johann Hinken

FI Test- und Messtechnik GmbH,
Germany,
Joined May 2014
18
15:05 Apr-08-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to jagan at 14:18 Apr-04-2015 (Opening).

Hello,
in case you are interested in defects being ferromagnetic inclusions, I suggest magnetometry. That is a sensitive magnetic measurement after magnetisation. If you are interested I can give you more details.
Regards, Johann

    
 
 Reply 
 
R Dhanasekaran
Other, TEAM LEADER NDT
VESTAS WIND TECHNOLOGY INDIA PVT LTD, India, Joined Apr 2012, 15

R Dhanasekaran

Other, TEAM LEADER NDT
VESTAS WIND TECHNOLOGY INDIA PVT LTD,
India,
Joined Apr 2012
15
11:25 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to jagan at 14:18 Apr-04-2015 (Opening).

Dear Jagan,

what kind of defects are you looking for?

i would not suggest IRIS for detecting Cracks.

Regards
R.Dhanasekaran

    
 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
12:13 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to R Dhanasekaran at 11:25 Apr-09-2015 .

What length of pipe (tube) and how many pipes? Is that 8,74mm wall thickness?

I would recommend immersion UT with one probe sending sound in at 0 degrees looking for longitudinal defects and another compression wave offset from TDC to introduce shear wave looking for radial (through thickness) defects. Pipe (tube) will be rotated. There is a simple calculation based on ID/OD to determine optimum offset.

    
 
 Reply 
 
jagan
Engineering,
Saudi Arabia, Joined Dec 2011, 23

jagan

Engineering,
Saudi Arabia,
Joined Dec 2011
23
14:20 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to Johann Hinken at 15:05 Apr-08-2015 .

Dear Johann Hinken,

Thanks forthe suggession.
can explain how it can be done
Magnetometry???

    
 
 Reply 
 
jagan
Engineering,
Saudi Arabia, Joined Dec 2011, 23

jagan

Engineering,
Saudi Arabia,
Joined Dec 2011
23
14:27 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to Nigel Armstrong at 12:13 Apr-09-2015 .

Dear Nigel Armstrong,

Yse 8.74mm wall thickness 2inch dia and its 60 meter long spool with more than ten welds.
length is also an issue if we go for immersion.

thanks.

    
 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
14:42 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to jagan at 14:27 Apr-09-2015 .

im amazed that you didnt consider giving this info origimally!

    
 
 Reply 
 
Johann Hinken
FI Test- und Messtechnik GmbH, Germany, Joined May 2014, 18

Johann Hinken

FI Test- und Messtechnik GmbH,
Germany,
Joined May 2014
18
16:30 Apr-09-2015
Re: Inconnel625 2" 8.74mm best technique for meterial defects???
In Reply to jagan at 14:20 Apr-09-2015 .

Hello Jagan,

the "magnetometry" consists of two steps: 1.) magnetizing the part in a strong dc magnetic field and 2.) scanning the surface of the part by a sensitive magnetometer which excludes the influence of background fields. The method is good for the detection of very small ferromagnetic inclusions in non-magnetic alloys like Inconel. We use it routinely in the inspection of aero engine turbine discs.

Regards, Johann

    
 
 Reply 
 

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