power outage with my rod oven
power outage with my rod oven
(OP)
I know this is probably a stupid question but I'm going to ask anyhow....... the 7018 rod that we use is heated at 120 degrees C in our huge shop rod oven, our power was down and I became worried about the rod. The power was down for about 4 hrs, and after 4 hrs I checked the temp in the oven and it said 82 degrees C. At this point should I be re conditioning it? Or is the min actually lower than the 120 degrees C that is recommended? Essentially I would like to know if I have a window with a min max or just a target heat with no play on either side. (Many people had said that it would probably stay warm for a long time and that it should be fine) Thank you for your time, knowledge, and comments.





RE: power outage with my rod oven
If you are workng to AWS D1.1 you are permitted to rebake the electrodes at high temperature for one hour. Refer to the code for actual details.
Best regards - Al
RE: power outage with my rod oven
SFA 5.1 lists typical temperatures for a Holding Oven for 7018 as 30 to 140 degrees above ambient temperature so if your ambient the day you lost power was 20 - 30 degrees you would still be fine.
Not sure how this recommendation works in Alaska ?
Regards,
Kiwi
RE: power outage with my rod oven
RE: power outage with my rod oven
E7018 electrodes are to be kept from moisture accumulation. Next time this happens, check the humidity in oven as well as the temperature so that you can logically rationalize a simple reheat rather than reconditioning.
RE: power outage with my rod oven
D1.1 allows the contractor to rebake the electrodes once provided they haven't actually been wet. I don't have the code in front of me, but I believe E7018 electrode have to be rebaked for an hour at 500 degrees F.
Rebaking is not the same as reconditioning.
Best regards - Al
RE: power outage with my rod oven
http://www.weldinguide.com/viewtopic.php?f=2&t...
RE: power outage with my rod oven
http://www.weldinguide.com/gdanastasiadis/viewtopi...