help + - connections

[oceanobsession]

Hello everyone. which is the correct set up for mma is it + for the arc rod holder and - for the earth cheers ocean

 

[madkayaker]

depends on the rod i think.

 

[shenion]

Yes, read the box on the rods. Some say either polarity, others are only DCEP/DCEN.

 

[scarecrow]

Note: When the fourth (or last) digit is 0, the type of coating and current to be used is determined by the third digit.

Digit Coating Current
0 * *
1 Cellulose potassium ac, dcrp, dcsp
2 Titania sodium ac, dcsp
3 Titania sodium ac, dcrp, dcsp
4 Iron powder titania ac, dcrp, dcsp
5 Lo-hydrogen sodium dcrp
6 Lo-hydrogen potassium ac, dcrp
7 Iron powder iron oxide ac, dcrp, dcsp
8 Iron powder lo-hydrogen ac, dcrp, dcsp

 

[irondarren]

if i remember correctly DC- or torch plug into the -, earth in the + will give deeper penetration. It is often rod dependant

 

[Jake SS]

With nearly all stick welding the electrode is positive
Cheers

 

[Sid]

if i remember correctly DC- or torch plug into the -, earth in the + will give deeper penetration. It is often rod dependant

In the 'Tony' welding videos http://www.tonywelding.com/ he describes a deep penetrating weld coming from a +ve welding electrode. 70% of the heat of the arc goes to the +ve side, so he describes it like having a hot pick penetrating into a block of ice, it goes deeper than a cold one.

 

[oceanobsession]

Re help + - connections

Note: When the fourth (or last) digit is 0, the type of coating and current to be used is determined by the third digit.

Digit Coating Current
0 * *
1 Cellulose potassium ac, dcrp, dcsp
2 Titania sodium ac, dcsp
3 Titania sodium ac, dcrp, dcsp
4 Iron powder titania ac, dcrp, dcsp
5 Lo-hydrogen sodium dcrp
6 Lo-hydrogen potassium ac, dcrp
7 Iron powder iron oxide ac, dcrp, dcsp
8 Iron powder lo-hydrogen ac, dcrp, dcsp

Hello scarecrow. you have lost me here the welding rods im using would be esab 6013 or murex 6013 does this mean arc rod holder into + and earth into_
cheers ocean

 

[madkayaker]

if i'm reeding that right it makes no differance

 

[Hitch]

For basic useage you'll want the torch/holder in the + and the earth return in -.

 

[scarecrow]

Going by the chart you can use the 6013 either way. the last digit is supposed to tell you which way if the less digit is zero then you use the second last digit
dcsp is DC straight polarity electro negative that is the electrode plugged into - which gives you the least penetrating
dcrp is electropositive or (DCEP) which gives you the most penetration . That is the electrode plugged into +
ac would be considered medium penetration

 

[oceanobsession]

Re help + - connections

Hi there scarcrow does this mean i can mma weld with my set switched to
ac or dc i thought ac was for aluminium and dc for steel but when switched
onto mma you can use ac and dc for mma welding

hope ive made sense ocean

 

[shenion]

Going by the chart you can use the 6013 either way. the last digit is supposed to tell you which way if the less digit is zero then you use the second last digit
dcsp is DC straight polarity electropositive or (DCEP) that is the electrode plugged into + which gives you the most penetrating
dcrp is electro negative which gives you the least penetration . That is the electrode plugged into -
ac would be considered medium penetration

Hmm, on my Airco DCEP is marked as "Reverse polarity" and DCEN is "Straight polarity."

 

[madkayaker]

Hi there scarcrow does this mean i can mma weld with my set switched to
ac or dc i thought ac was for aluminium and dc for steel but when switched
onto mma you can use ac and dc for mma welding

hope ive made sense ocean

It does on MMA doesn't matter AC or DC depends on the rods not the metal

 

[scarecrow]

oops I should pay more attention to what I'm doing I think I've fixed it I really starting to confuse myself now

 

[scarecrow]

My brain is getting addled from blue cards I think I have it sorted now
oceanobsession you can ark weld ac or dc with dc you can plug the electrode holder into the + or - for different penetrations you can't do this on ac well you can but it doesn't make any difference
if you are tig welding you would use ac for aluminium and dc for steel

I like the avatar shenion looks like a new welder I hope it working okay

 

[shenion]

I like the avatar shenion looks like a new welder I hope it working okay

That's my DIY portable welder. Been on a back burner until I have time and $$$ to have new boards made.

As is it works but cuts out for 1 second periods. Something loose inside. That 12HP B&S engine shakes a bit as it revs up. Have done several 2.4mm rods in a row with no problems. Should be good for almost 150A continuous.

One of these days, I'll finish the firmware to do MIG and TIG.

 

[Tino]

Maybe this will help, rod is a 6013




some times the E4322R type number will be on the box not the rod

 

[Sid]

Just to add a small point to this thread consider this.

If a shop sells only one type of rod, it will be 6013. Many or even most places only sell 6013 or equivalent makers code.

This is because all arc welders can use them, cheap buzz boxes running ac/dc, or something more exotic. They have an ionised shield needed for ac, and can be used DC+or DC-.

For DC machines use electrode +ve for deep penetration.

 

[irondarren]

6013 are considered general purpose rods, which i guess is why most sell them