Dear Shasank,
As stated in this tread earlier, ASME Sec. IX code does not state anything about this. we have to go by tthe manufacturer's instruction only.
But, I have come across a practice to test its usability. But I can't provide you any type of written reference. It was found in one of the vendor's system procedures.
Electrodes considered as old, which doesn't loose flux when dropped vertically from 1 meter height from ground is suitable for welding.
You can try this.
Thanks and Best Regards,
K.Rajagopal
On Fri, Sep 18, 2009 at 7:16 AM, Shashank Vagal
<nach_sam@yahoo.com> wrote:
Hi,
All Ok and accordingly noted. How about the shelf life, if the packing is not damaged, do we follow manufacturer's instructions or is there any expiry date for it? What is the general approach here, in absence of anything else?
Regards,
Shashank Vagal
--- On Thu, 17/9/09, claes.gillenius@esab.se <claes.gillenius@esab.se> wrote:
From: claes.gillenius@esab.se <claes.gillenius@esab.se>
Subject: [MW:3240] Re: 3238] Shelf life of Low hydrogen electrodes Date: Thursday, 17 September, 2009, 4:11 PM If the electrodes are packed in air tight packages they can be used right away. If not, redry the electrodes in the way the manufacturer recommends, normally at a temperature around 300 - 350 °C. Air tight packages are for example vacuum packages. If such a package is damaged and the vacuum lost, redy the electrodes. Redrying returns the electrodes to it´s original state. Best regards, Claes Gillenius
Development Engineer, MMA. (Spec. stainless and non Fe-alloys)
Direct tel: +46 (0)31 509315
Mobile +46 (0)707532012
Company ESAB AB
Address Box 8004, 402 77 Gothenburg, Sweden
Lindholmsallén 9
Company reg number 556005-7738
Consult the consumable manufacturer, may be shelf life revalidated with additional testing. Code does not specify the shelf life, but the manufacturer does.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ravindra T
Sent: Thursday, September 17, 2009 3:28 PM
To: materials-welding@googlegroups.com
Subject: [MW:3238] Shelf life of Low hydrogen electrodes Dear All Our contractor has brought low hydrogen electrodes (E 7018 & 8018) which are manufactured in 2007 for welding station piping in one of our intermediate pump station of our cross country pipeline project. I would like to know whether these electrodes can be used now?. Is there any reference in ASME code regarding the expiry/ shelf life of Electrodes? Please advise me in this regard. Thanking you all in advance Ravindra Senior Project Engineer
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