[MW:3270] Re: [MW:/] Re: 3238] Shelf life of Low hydrogen electrodes

Dear Friend

 

The shelf life of electrodes is directly depended on the storage condition which are not clearly known for you. As you know basic electrodes types are so sensitive to humidity absorption. Accordingly it is recommended to visually random check of some baches and inspecting the tencity of the rod covers by bending them and also soundness of rod.( Having no corrosion)

Furthermore you could test a random batch of these electrodes by changing the welding parameters in work shop before commence of project.

Anyway consulting with manufacturer would be also useful.

 

Yours truly,

K.Alyari

 

On 9/22/09, rajagopal kannan <rajagopal.kannan@gmail.com> wrote:

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 To: materials-welding@googlegroups.com   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 "Bathula Raghuram (Mumbai - PIPING)" <R.Bathula@ticb.com> Sent by: materials-welding@googlegroups.com 2009-09-17 12:17 Please respond to materials-welding@googlegroups.com To <materials-welding@googlegroups.com> cc Subject [MW:3239] RE: 3238] Shelf life of Low hydrogen electrodes 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 This communication and any files transmitted with it contain information which is confidential and which may also be privileged. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s), please note that any disclosure, copying, printing or use whatsoever of this communication or the information contained in it is strictly prohibited. If you have received this communication in error, please notify us by e-mail or by telephone as above and then delete the e-mail together with any copies of it. ESAB does not accept liability for the integrity of this message or for any changes, which may occur in transmission due to network, machine or software failure or manufacture or operator error. Although this communication and any files transmitted with it are believed to be free of any virus or any other defect which might affect any computer or IT system into which they are received and opened, it is the responsibility of the recipient to ensure that they are virus free and no responsibility will be accepted by ESAB for any loss or damage arising in any way from receipt or use thereof.

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