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Technical Discussions
Rakesh Parmar
NDT Inspector,
India, Joined Dec 2014, 58

Rakesh Parmar

NDT Inspector,
India,
Joined Dec 2014
58
03:44 Sep-19-2017
MT indications in Side face of welding

Hi,

Have a issue regarding MT of welds of carbon steel , welding process is MAG,
and MT done from side face of the weld after grinding,
MT performed as per ISO 17638, Acc std : ISO 23278 Level 2X

Weld had a strong indication at side face and it was repaired with TIG weld and afer that MT performed and got indication where the TIG has been done , Indication was so blur at the whole area where the tig weld was carried out,


This might be a due to Hardness change issue , I am thinking that...

Can anyone clear this issue.

 
 Reply 
 
Rakesh Parmar
NDT Inspector,
India, Joined Dec 2014, 58

Rakesh Parmar

NDT Inspector,
India,
Joined Dec 2014
58
16:39 Sep-27-2017
Re: MT indications in Side face of welding
In Reply to Rakesh Parmar at 03:44 Sep-19-2017 (Opening).

Hi experts.

Anybody can help regarding this issue.

Would be great help.

 
 Reply 
 
P V SASTRY
R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D, India, Joined Jan 2003, 195

P V SASTRY

R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D,
India,
Joined Jan 2003
195
12:19 Sep-28-2017
Re: MT indications in Side face of welding
In Reply to Rakesh Parmar at 03:44 Sep-19-2017 (Opening).


Most of the time welded areas always give spurious indications due to permeability changes.
From the description it looks that the indications that you observed may also be due to permeability changes.

If you give the photographs it will be possible to confirm.

One way of verifying is to conduct a proper PT.

Best wishes

P V SASTRY

 
 Reply 
 

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