[MW:14395] RE: 14386] MMA welding Electrode Gets red hot

Dear

Red hot tendency could occur.

1) If you are using higher currents than the required one. In general 40Amps
per dia is the amperage followed. Being Stainless Steel electrode, 80-90
Amps for 2.5mm dia can be used.
2) Could be due to Eccentricity. While manufacturing process during
extrusion, if the flux is not quoted uniformly on the core wire, then also
this problem could happen. It is normally a batch problem.

You can try either.

1) Use lesser currents. You have not mentioned the currents kept during
welding.
2) Try different batch of electrodes.

Regards
Fredric Prabu. K

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of
murtaza506@yahoo.com
Sent: Tuesday, May 29, 2012 5:34 PM
To: Materials & Welding
Subject: [MW:14386] MMA welding Electrode Gets red hot

I have a MMA welding electrode of SS 308L Dia. 2.6mm. when half of the
electrode is consumed it get red hot, and it gives porosity in the weld
metal what could be the reason i.e. is it a welding problem or there is a
problem in the electrode???
if this problem is due to electrode then what can be the reasons and
rectifications???

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