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RE: [MW:26843] regareding taper burning of electrode

By Materials & Welding

Dear Friend and Expert

 

Regarding to Radiographic Testing (RT) of weld

 

1)     Does any codes / stands mentioned how to selection of film type/class like carbon steel and stainless steel?

2)     On the heavy wall thickness plat 70 mm (Sphere Tank) welded by SMAW testing by PAUT were found a lot of defects but re-test by RT Ir-192 doesn't found any things, Any opinions to recommend

 

 

Thanks and Best Regards

 

 

 

Suchin Katavut

 

 

From: prem_nautiyal@rediffmail.com [mailto:prem_nautiyal@rediffmail.com]
Sent: Thursday, September 28, 2017 12:44 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:26838] regareding taper burning of electrode

 

Its manufacturing defect of consumable manufacturer.

Please tell your consumable manufacturer to replace the defective batch.

PREM S NAUTIYAL
CELL : 9769316004


From: Perumal Govindan <perumalgovindan@gmail.com>
Sent: Tue, 26 Sep 2017 11:32:54
To: materials-welding@googlegroups.com
Subject: Re: [MW:26836] regareding taper burning of electrode
 

Hi

I believe it's due to non concentric flux coating of electrodes. It's a manufacturing defect.

Take few electrodes from the pocket inspect visually and measure it's flux coating thickness through vernier caliper and you will find uninformed coating.

Regards
P Govindan

On Sep 26, 2017 08:10, "akshay" <akshaykulkarni.ak21@gmail.com> wrote:

when we starts welding the electrodes starts burning in taper shape please suggest improvement and reason behind it how i can overcome this problem 

 

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