Old welding electrode 1

[PAN]

Do the welding electrodes have expired date? Normally, we will dry the covered electrode in oven before use to avoid moisture. Is this enough to say that it can be used forever?

 

[welding1]

I suggest you talk to a good consumable supplier.

There are three main types of electrodes:-

Basic typical E7018, these electrodes need baking to achieve low hydrogen, which is their purpose. There is a limit to how many times this can be achieved before the coating degrades.

Rutile electrodes E6013, They don’t need baking, but must be kept dry. They can be oven dried if required, but don’t over cook or the flux will fall off.

Cellulose electrodes E6010, should be used dry but to much heating will tend to destroy the coating. I suspect that these electrodes may even work better wet, but I have never tried it.

I think it depends how critical your applications is and the risk of hydrogen cracking. You can test them: do a representative weld, leave it for 48 hours, cut it into strips and bend them. A bending jig is preffered but a vice and a big hammer will suffice.

Regards
John

http://www.gowelding.com

 

[PAN]

Thanks John...Do you have more specific comment for ENiCu-7?