Gents,
I have interesting event. One of the client is expecting and interpreting the temperature 60 degree C must be on Electrodes. So now we are increasing the Quiver temperature nearly 100 degree C to reach the Electrodes temperature to 60 degree. But we are not sure about this concept. We are trying to satisfy my Client.
But apart from the above, All the Electrodes manufacturer confirmed that the Quiver must be heated condition at least 80 Deg C to ensure the electrodes will not pickup any moisture.
So you need follow the Manufacture recommendation unless you do not have client spec which is asking something stringent.
With Kind Regards,
Malai
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of I.K.Inspection Services
Sent: Sunday, February 26, 2012 10:07 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:13784] RE: 13168] Low Hydrogen Electrode in Steel Structure Application
Dear all,
I would like to add small comments addition to Mr Kaja, Baking and holding is not required if the electodes used directly from vacuum packed carton which is manufacturer package.
regards
IK
On 8 December 2011 14:03, Kaja Mohideen <kaja@asw.sa> wrote:
Dear Mr. Endri,
All kinds of basic coated Electrode (Low Hydrogen) must be baked for (E7018) at 230 degrees for 2hours then it transferred to Holding oven at 120 degrees for continuous use, After that you can issue the electrode from holding oven to portable oven at Minimum 60 degrees maintain for shop and Site welding, Electrode return to holding oven at the end of the shift which electrode not exposed to atmospheric for the Maximum hours, So when the electrode exposed above the maximum hours, it shall be rebaked once, the rebaked electrode shall not be rebaked again, should scrap.
It’s all about to prevent the electrode to control Moisture Pickup
Refer AWS A5.1: Specification for Carbon steel Electrode
Best Regards,
Kaja Mohideen
QA/QC Manager
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Endri Prasetyo
Sent: Thursday, December 08, 2011 11:55 AM
To: materials-welding@googlegroups.com
Subject: [MW:13168] Low Hydrogen Electrode in Steel Structure Application
Dear Experts,
Anybody can advice please, when we use low hydrogen type electrode for steel structure welding erection (SMAW process) does it require to be baked all the time @70 C deg on work station?
Is it acceptable when the welder only keep the electrode into the portable oven without baking (after issued from holding oven) although it is a not best practice?
For information, the material of the steel structure is carbon steel Q235.
Appreciate your sharing. Thanks.
Regards,
Endri
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