sci.engr.joining.welding Google Group

Re: Stick welding with Maxstar 140 - is polarity different?

deserttra...@fishymail.net (Steve B) — Sun, 14 Mrz. 2010 14:37:14 UT

news:m2pr37ccwa.fsf@Richard-Smiths-Computer.local...
I used to use 3/32" 6011 with stinger negative to weld thin wall ornamental
metal in the field. It has the behavior you describe, and with a short arc,
and accurate amperage settings, lets you stack small puddles to hold
together the .065" thick metal, even allowing for butt welding of two

Re: SMA rod burn galv & primer 6013 vs 7018

r0d...@weldsmith4.co.uk (Richard Smith) — Sun, 14 Mrz. 2010 13:03:16 UT

Hi Private, everyone
Thanks for load of info. you give.
The "joint" is between
a "strut" used for the electricians, plumbers, heating and ventilation
and I.T. network folk for securing their variable tubes and cables -
which is about 40mm square section with on side open, that open side
having both edges folded inward into "lips" which standard fittings

Re: Stick welding with Maxstar 140 - is polarity different?

r0d...@weldsmith4.co.uk (Richard Smith) — Sun, 14 Mrz. 2010 12:21:09 UT

I've written this standard answer to this standard question
----------------
[DCEP = Direct Current, Electrode Positive
DCEN = Direct Current, Electrode Negative
AC = Alternating Current (the electrons shunt back-and-forth)]
[+ve = Positive
-ve = Negative]
The standard answer for Stick / SMA is -

Re: Stick welding with Maxstar 140 - is polarity different?

deserttra...@fishymail.net (Steve B) — Sun, 14 Mrz. 2010 01:48:23 UT

7018 is DCEP unless designated as 7018AC. Or that is the way I have run it,
but have never run it on an inverter. We'll hear from someone who knows
soon.
I learned that positive + meant more penetration, and negative - meant less
penetration. Helped me visualize whether the action was taking place on the

Re: Stick welding with Maxstar 140 - is polarity different?

lbcag...@gmail.com (lbgary) — Sat, 13 Mrz. 2010 23:34:06 UT

Just ran some 7014 rod, tried it both ways, couldn't tell any
difference. Maybe a little more penetration with DCEN, at the same
amperage.

Stick welding with Maxstar 140 - is polarity different?

lbcag...@gmail.com (lbgary) — Sat, 13 Mrz. 2010 21:22:59 UT

I was getting ready to do some stick welding with 7018 rod, using my
Maxstar 140 inverter, and did a little reading (in a Synchrowave 250
manual) to refresh my memory on polarity settings. The manual said
that DCEN is by far the most common setting for most rods, so I
thought I had my answer. I set the Maxstar for DCEN, switch to the

Re: SMA rod burn galv & primer 6013 vs 7018

ple...@dont.bother (Private) — Sat, 13 Mrz. 2010 04:11:36 UT

IMHO, 6013 is properly referred to as a 'fast follow' rod, I would never
consider it as 'fast fill', that designation is usually reserved for rods
containing iron powder in the coating such as xx14, xx24, xx18, xx27-8.
Fast follow ability is particularly useful when welding thin or other
material which requires a high travel speed, as the puddle will follow the

Re: SMA rod burn galv & primer 6013 vs 7018

spaml...@microsoft.net (RoyJ) — Fri, 12 Mrz. 2010 17:34:46 UT

6013 is usually a poor choice on cruddy materials like galvanized or
primed. It is a fast fill rod with relatively low 'force'. Cranking the
amps up doesn't help that much. But if the galvanzing is thin, can be
cleaned off with sander, wire brush, or acid, it should be ok. Just ok.
A 6010 rod would be the best choice in the 6000 series but a 6011 would

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Re: Hobart Gasoline Welder

mike.terr...@earthlink.net (Michael A. Terrell) — Fri, 12 Mrz. 2010 01:43:55 UT

Right. Sure. OK.

Re: SMA rod burn galv & primer 6013 vs 7018

s31924.nos...@netscape.net (RAM³) — Fri, 12 Mrz. 2010 01:08:27 UT

"Bob F" <bobnos...@gmail.com> wrote in news:hnbq66$v0k$1@news.eternal-
september.org:
Where else did you think that he posted this?
While I may be dead wrong, ISTM that either one would do you well. <G>

Re: SMA rod burn galv & primer 6013 vs 7018

bobnos...@gmail.com (Bob F) — Thu, 11 Mrz. 2010 22:17:50 UT

Better place for this question - sci.engr.joining.welding

SMA rod burn galv & primer 6013 vs 7018

r0d...@weldsmith4.co.uk (Richard Smith) — Thu, 11 Mrz. 2010 21:26:44 UT

Hi all
Reckon 6010 would be best. But 6010 very rare here in UK (please
trust me on this, N.Am. folk).
Between 6013 and 7018, which would be best?
Have close fit-up between 2mm thk galv'd and 8mm thick pre-primered.
So can run high amps and short arc to blast galv & primer. Which
means 7018 doable??? - short constant arc length and stringer bead.

Re: FS -- 275 amp Pipeline Welder, Continental 163 engine

brucenospamberg...@gmail.com (Bruce L. Bergman) — Thu, 11 Mrz. 2010 08:54:53 UT

Saw that on another post. Now you know how it got that way.
I hesitate to say "here" because it's way north of your preferred
area, and because my brother and his wife (the other Trustees) might
not be amused, so keep looking on the East Side/Orange Cty - but if
all else fails, you can get scrubbed up nice and we can ask them...

Re: Welding Mystery Metal

noth...@donttry.com (TinLizziedl) — Wed, 10 Mrz. 2010 23:22:56 UT

[link]
This PDF file is an excellent resource. It has lots of technical info,
from which can be gleaned an exact matching material, but on page 3 it
also states that you can use E309-L for welding if matching the
toughness of the 400 series base material is not strictly necessary.