Re: [MW:23179] Impurities on weld-GTAW

PT,

Please check whether you are using any Oil during expansion prior to welding. Proper drying and cleaning is required.

 

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

---

From: Anup N K E <nkeanup@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, July 18, 2015 11:46 AM
Subject: Re: [MW:23178] Impurities on weld-GTAW

While using ER 70 S-2, first clean the filler wire with Emery paper and then do the welding. Good interpass cleaning is required . If backside accessible then that also needs cleaning.

The impurities / slag may be due to the chemical composition of filler wire and might show as defect in RT film if not cleaned

Other alternative is to change to    ER 70S- 6  filler wire.

Regards,

Anup N K E

On 17 Jul 2015 13:37, "Pawan Tiwari" <pawan.tiwari@dwekam.org> wrote:

Dear Experts,

 

Kindly refer the attached job of eco coil of Boiler in tube to tube joint welding application.

During GTAW welding with ER70S-2 grade filler wire we have noticed liquid type impurities on weld bead.

Why such type of defects are coming?

Is it product defect or welding process defect?

Please support & share your views to move in right direction.

 

Thanks & Best regards

PT

 

 

 

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/55a8adfd.eabb420a.30ad2.ffff9552SMTPIN_ADDED_BROKEN%40gmr-mx.google.com.
For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJsQutaqhuHG7UMbf5RZGM5kob0L%2B_cVGyT8m_An97sKorqbyA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.