--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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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.
To post to this group, send email to materials-welding@googlegroups.com
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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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