Re: [MW:34592] Oxidation during welding of SA213 gr T22

Please continue with the back purge. GTAW and GMAW require it.

Also, welding of T22 demand the major care,  cleaning and free oxidation.

Regards,

Ramon Briceno

Metallurgical Engineer.

Obtener Outlook para Android

---

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> on behalf of hvala...@gmail.com <hvalaalpesh@gmail.com>
Sent: Tuesday, October 3, 2023 3:33:15 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:34562] Oxidation during welding of SA213 gr T22

 

Dear experts,

We are facing problems with welding of SA 213 Gr T22 superheater tubes of thickness 2.9mm.

Generally, back purging with inert gas in GTAW is not necessary for P22 as Cr is less than 3%. However, during welding without use of back purging, Oxide formation is happening. The construction of the equipment is such that, purging is very difficult to achieve.

Kindly Guide us to eliminate the oxidation of root.

Thanking you,

Alpesh

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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 view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/e2e41e16-2ea6-419a-8e20-9121f424edd5n%40googlegroups.com.