[vdotmatrix]

I have never used my welder for stick and I want to get one pound samples of E7018 and E6011 to try out.
I saw on a chart that these are for DC+.

What happens if you run these on DC- ?

ALSO: plastic?? The amazon ad reads this way. Any ideas?
Hobart H119944-R01 1-Pound Plastic 7018 Stick Welding Electrode, 1/8-Inch

[Jack Ryan]

I have never used my welder for stick and I want to get one pound samples of E7018 and E6011 to try out.
I saw on a chart that these are for DC+.
What happens if you run these on DC- ?

You need to check the specs for the rods you buy.

• 6011 usually runs on AC or either polarity

• 7018 usually runs on DCEP but if used for a root pass, DCEN is suggested because penetration is less and there is less chance of blowing through.

ALSO: plastic?? The amazon ad reads this way. Any ideas?
Hobart H119944-R01 1-Pound Plastic 7018 Stick Welding Electrode, 1/8-Inch

I would guess they come in a plastic pack.

Jack

[vdotmatrix]

IMG_0240.jpeg (1.25 MiB) Viewed 14536 times

Thank you

[Jack Ryan]

Tables of generalised electrode properties are a good indicator but the manufacturer's data is more accurate for a specific product.

On this 7018 data sheet,

7018.png (26.46 KiB) Viewed 14512 times

The polarity is given as AC, DC+ or DC-. However, the note says that DC- is recommended for root passes.

Jack

[vdotmatrix]

Tables of generalised electrode properties are a good indicator but the manufacturer's data is more accurate for a specific product.

On this 7018 data sheet,

7018.png

The polarity is given as AC, DC+ or DC-. However, the note says that DC- is recommended for root passes.

Jack

Thanks. I interested 6011 and 7018. My question is if you use other than the recommended electrode polarity, what will happen?

[Jack Ryan]

7018 usually runs on DCEP but if used for a root pass, DCEN is suggested because penetration is less and there is less chance of blowing through.

The polarity is given as AC, DC+ or DC-. However, the note says that DC- is recommended for root passes.

As I said, for 7018, using DC- instead of DC+ gives less penetration. That is why it can be used for root passes.

I don't use 6011 but as it is designed for AC or either DC polarity, it probably doesn't make much difference.

Jack

[tweake]

Thanks. I interested 6011 and 7018. My question is if you use other than the recommended electrode polarity, what will happen?

keep in mind it will vary depending on manufacture and also your machine.
eg some machine won't run 6011 at all.
some rods say they will run but don't. some say they don't but can.

generally speaking running a rod on DC- it reduces heat and penetration. but some rods will run badly. eg some 7018's.
6013 can run very well on dc- and thats very useful on thin material. 7016's are commonly used on DC- for root passes for pipe (jody had video of that).
6011's i'm not sure on but i doubt you would want to.

[cj737]

eg some machine won't run 6011 at all.

Tweake I think you meant to say some lower end inverter type machines won’t run 6010. 6011 and 6013 are often recommended alternatives to that rod for these boxes.

Vdot, grab a pound of rods, try them on each polarity and see for yourself what the differences are. There is no substitute for live, field testing on your box with your hand to determine what works best.

[tweake]

eg some machine won't run 6011 at all.

Tweake I think you meant to say some lower end inverter type machines won’t run 6010. 6011 and 6013 are often recommended alternatives to that rod for these boxes.

no.
what i wrote is correct. some machines won't even run 6011, especially lower end inverters. i have some.
i had to get a really good middle of the road brand to get an inverter that runs 6011's well. i have nothing that runs 6010 well.
not many people use 6010/11 down here. 6013 and 7016 are the main ones.

[LindaL]

I have never used my welder for stick and I want to get one pound samples of E7018 and E6011 to try out.
I saw on a chart that these are for DC+.

What happens if you run these on DC- ?

ALSO: plastic?? The amazon ad reads this way. Any ideas?
Hobart H119944-R01 1-Pound Plastic 7018 Stick Welding Electrode, 1/8-Inch

E7018 and E6011 work best on DC+. On DC-, the weld will be unstable with a lot of spatter. "Plastic" likely refers to the packaging, not the electrodes themselves.