Mr.Samir Mehta,
Have seen the details and comments as follows:
1. The welds shown in the middle pic. (think it should be with E 347-15) are no doubt good.
2. Coating on L H type electrodes are bit medium heavy. Stringer runs always gives very good bead finish and ripple factors.
3. On the other hand the bead done with E 347-16 (3rd pic.) was more wide i.e., it is a weave bead and produces
more heat in put and poor ripples - that is what you have got.
4. Stringer run produces less heat in put competitively and is good for SS welding. Weaving if done should be restricted to
max. 2 times dia. of core wire to get best results.
5. Blue colour seen on the weld bead is due to formation of Chromium-oxides and may result in corrosion while in service..
It is not desirable.
6. Use stringer runs with E347-16 also throughout like in basic coated electrodes and you will get same results.
Sridhar.
From: Samir Mehta <samirmehta.jnd@gmail.com>
To: materials-welding@googleg
roups.com
Sent: Sunday, 23 December 2012 4:16 PM
Subject: Re: [MW:16318] AWS E347-15 E347-16 Stainless Steel Welding Rod
Dear Sir,
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Thks for the advice, also u r requested to go through the attachment and do the needful pls
On Sat, Dec 22, 2012 at 9:09 PM, c sridhar <sridhar305@yahoo.com> wrote:
difference between E347-15 and E347-16. as initially we were using E347-15 and it working good but now we hv changed to
E347-16E 347-15 is a basic version of 19/10/Nb and welded using DC EP (+) Polarity, while E347-16 is a rutile version of same 19/10/Nband welded using AC (or) DC EP.In fact it should be easier to weld with rutile type ( E347-16) and it gives good finish compared to basic type. Current for both aresame and pl. check.Sridhar.
From: Nandesh Kumar <nandeshkumar@rocketmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, 22 December 2012 2:45 PM
Subject: Re: [MW:16304] AWS E347-15 E347-16 Stainless Steel Welding Rod
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What is your application of the said electrodes?
What complaint that the welders are complaining? What do you mean by "Quality of the electrodes"?
Also, what is the brand and trade name of both. Or else contact manufacturer, who is the best advisor.
ವಂದನೆಗಳೊಂದಿಗೆ / Best regards,
Nandesh Kumar A
Abu Dhabi, UAE
P.S. : Please don't print this e-mail unless you really need to.
--- On Sat, 22/12/12, welding <samirmehta.jnd@gmail.com> wrote:
From: welding <samirmehta.jnd@gmail.com>
Subject: [MW:16297] AWS E347-15 E347-16 Stainless Steel Welding Rod
To: materials-welding@googlegroups.com
Date: Saturday, 22 December, 2012, 6:54 AMDear Expert,Wt reference to the subjected matter, kindly provide the difference between E347-15 and E347-16. as initially we were using E347-15 and it working good but now we hv changed to E347-16 and our welders are starts complaining ab the quality of electrode. pls advice if it need some other Technic to weld or parameter variation.--
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To post to this group, send email to materials-welding@googlegroups.com
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
Samir Mehta
Engineer - Welding & Projects
JPIOS
Abu Dhabi - UAE
+971 55 94 25 327
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