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Up Topic Welding Industry / Technical Discussions / GTAW
- - By whmughal Date 09-26-2005 13:29
Is it sufficient to weld with electrode by removing its coating... i mean only using its inner bare material.While i am using GTAW welding technique.

Regards.
Parent - - By - Date 09-26-2005 13:37
Definitely not in Stainless Steel. The alloy agents are in the coating (flux). If you are welding, for example a 316, and you remove the flux from the electrode, you will have a plain ole vanilla 304 wire. It is definitely not recommended.
Parent - - By jon20013 (*****) Date 09-26-2005 14:39
I'm in complete agreement with you Chuck.

While it is possible to make a weld in such a manner, it's also possible to use the same technique with a metal coat hanger as our fore-fathers did for lack of more advanced materials.

Same holds true for the carbons, while the inner core or wire is of carbon steel composition it is the flux that gives the weld it's finished properties.

If you're just going to use that technique to weld up a leaking trash bin it would probably be okay, but for anything else you're results would be unreliable, at best.
Parent - - By - Date 09-26-2005 14:46
LOL... Good points, Jon. I loved your examples, too. Why someone would consider that anyway amazes me.
Parent - - By NDTIII (***) Date 09-26-2005 14:51
As long as you have a PQR to support it.
Parent - - By jon20013 (*****) Date 09-26-2005 15:06
NDTIII, I certainly hope you have your tongue driven straight into the side of your cheek and are giggling to yourself!
Parent - - By - Date 09-26-2005 15:15
OMG... My thoughts exactly.LOL...
Parent - - By pjseaman (**) Date 09-26-2005 23:18
He is talking about using the electrode as a rod filler for GTAW. I've used a regular stick electrode as a filler rod by knocking off the flux, why can't this work?

Educate me guys I don't see the problem as long as the flux is totally gone from the rod.
pjs
Parent - - By - Date 09-26-2005 23:28
pjs,
The chemistry, in stainess steel electrodes, is in the flux. The bare wire after the flux is knocked off is regular 304 stainless steel. If you are welding on 316 base metal, and you grab a 316 electrode and knock the flux off, you have a 304 filler metal. It ain't recommended......

Chuck
Parent - - By pjseaman (**) Date 09-26-2005 23:38
Ok I see that one but I've used Ni99 rod as a filler less the coating, and there isn't alloying agents in the flux on that one, so to say never is a bit off track.

Rather say not general practice but some cases do allow for such practice.
Parent - By - Date 09-27-2005 00:02
I disagree. The oxidizing agents in the flux effect welding characteristics and weld properties, so it is not off track. You need to check for yourself...the chemistry for the ENi-1 and the ERNi-1 are not the same, so it is still not recommended.
Parent - - By - Date 09-27-2005 00:06
pjs,
Maybe you should read these threads more carefully. I cannot see where I ever used the word "never" in any of my answers. I said "not recommended" and I stand by that.
Parent - By jon20013 (*****) Date 09-27-2005 09:38
As do I Chuck. Like I said above, it depends also on the criticality of the work. If you're mending leaking trash bins or fences, no problem. If however, you're working on something that, if failed, could cause injury, death or damage to property, then one should always use the right tool for the right job... in this case proper GTAW rod.
Parent - - By NDTIII (***) Date 09-27-2005 12:57
Of course I did. LOL
Parent - By - Date 09-27-2005 13:06
NDTIII,
Phewwww... Ya had us worried there for a minute. (joking)
Parent - By jon20013 (*****) Date 09-27-2005 13:06
~ WHEW ~ You were scaring me there for awhile buddy! ;-)
Up Topic Welding Industry / Technical Discussions / GTAW

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