Thread: Welding Gal Tube

Gday Tote,


I am not a qualified welder but have done my fair share, 2mm thick using 3.2 rods is a bit overkill. I would have thought 2.5 rods would have been the better option. I recently welded 2 & 3mm gal tube with this size rods.
I will be interested to see what other more professional welders in the forum have to say.




Cheers Ean

stick welder using cellulose flux rods 2.5mm will do the job pretty dam well in my experience...

some cheap galv tubing will blow back if it hits a lamination.

you'll need some of that a2 milk in the other thread to help stop the galvo guts stomach cramps if you don't have something supplying you heaps of fresh air..

Plenty of fresh air- biggest problem was keeping the grass wet enough to prevent a fire. Had the fire pump going a few times during the day.
Thanks for the tips.

Regards,
Tote

High frequency start is a TIG thing only from everything I have read. Does it have an arc force control? Sometimes call Dig function. I haven't used one but cranking that up is meant to help stop sticking in MMA welding. The other MMA function would be hot start possibly? If you have no luck send it to me and I'll find a safe corner in the workshop for it

do not listen to any of that ^^^^^^ its rubbish

you can not weld Galv. so grind it off first SOP stupid if you do not.

use a 2.5 GP rod not an iron powder rod, that's for nice clean indoor veed fillet welds which you are not doing. ferrocraft cigweld are all rubbish.

get some of these

Weldcorp 2.5mm Mild Steel Welding Electrodes - 2.5KG Pack I/N 6330042 | Bunnings Warehouse

Now some basics. i hope you are using a manual helmet and not an auto helmet. that you have two gloves and are holding the hand peace with one hand and the other 1/2 way down the rod until you are 1/3 burnt and then move your hand back.

if you still can only weld 10mm before dropping the guts out of it. 1 probably your hand is not steady enough IE your weld is to fat, to slow to much heat. but that comes with practice.

simple answer is just weld 5-6mm then start again at the other end, another 6mm then back to where you finished off before. a bit ruff but better than dropping bird stuff trying to fill holes.

Originally Posted by BigBlackDog

High frequency start is a TIG thing only from everything I have read. Does it have an arc force control? Sometimes call Dig function. I haven't used one but cranking that up is meant to help stop sticking in MMA welding. The other MMA function would be hot start possibly? If you have no luck send it to me and I'll find a safe corner in the workshop for it

every thing has a high frequency start now days, if you want to pay for it!

it is really just a gimmick for those who can not!

Originally Posted by 85 county

do not listen to any of that ^^^^^^ its rubbish

you can not weld Galv. so grind it off first SOP stupid if you do not.

use a 2.5 GP rod not an iron powder rod, that's for nice clean indoor veed fillet welds which you are not doing. ferrocraft cigweld are all rubbish.

get some of these

Weldcorp 2.5mm Mild Steel Welding Electrodes - 2.5KG Pack I/N 6330042 | Bunnings Warehouse

Now some basics. i hope you are using a manual helmet and not an auto helmet. that you have two gloves and are holding the hand peace with one hand and the other 1/2 way down the rod until you are 1/3 burnt and then move your hand back.

if you still can only weld 10mm before dropping the guts out of it. 1 probably your hand is not steady enough IE your weld is to fat, to slow to much heat. but that comes with practice.

simple answer is just weld 5-6mm then start again at the other end, another 6mm then back to where you finished off before. a bit ruff but better than dropping bird stuff trying to fill holes.

Yep,
Doing most of that stuff. Auto Miller helmet though, yep to the gloves and the control of the electrode with the spare hand and welding in short lengths was how I was getting it done, I think my major problem was probably the 3.2m rods.

Thanks for the suggestions,

Regards,
Tote

Originally Posted by 85 county

do not listen to any of that ^^^^^^ its rubbish

you can not weld Galv.

wonder what i was doing for all them years... silly me

the cellulose rods burn hotter than your std rod and burn thru the glav..
unless it is millimeters thick.

did it many times over the years when i was on the tools

give it a try all knowing one...