What type of welding do you prefer when assembling a frame/chassis?

[KlineN5]

I have learned this in my welding classes at my college. I agree with you on this one but this is just what I learned. I was told that the flux has "scrubbers" and other things in it and whenyou are welding it goes thru the weld and pulls all the impurities to the face of the weld and it also has better penitration than MIG.

[ruthlessxbeastx]

first of all MIG uses flux core! also nutz i couldnt tell you if its stronger or not i know that it burns hotter since its almost like stick welding, but im still unsure if its stonger.

[nutz4sand]

A MIG welder can use Flux core as long as you have the drive wheels and tips of the right diameter. But not all Flux core welders have the Gas attachment to make them True MIG's.

I am also not sure how it supposedly burns hotter. Heat is a factor of the setting on the machine and the size of the wire. (Bigger wire can bring more heat in flux or true MIG.)

I will have to research the "scrubbers" of Flux core welding. Never heard that before but it may be the case.

[ruthlessxbeastx]

scrubbers? i think its just a phrase since it does raise the impurities to the surface. so if its not a true MIG is it simply a wirefeed?
if you have a mig run a bead with regular wire and gas. then run a bead using the same settings on your machine but running fluxcore. it just burns hotter the chemicals in the flux react to the welding process, cleaning, and protecting the weld and this results in a hotter temp.

[ttginc]

Inherently, given similar wire size and heat settings, flux core has no stronger properties than comparable solid core wire. The alloy is essentially the same, i.e, the tensile strength is very similar. The notion that it can be stronger is that the flux coating, like the flux on stick electrodes can cause drastic changes in the arc itself. The flux causes the arc to penetrate deeper and narrower rather than a wider shallower weld of solid core gas shield. This is similar to the difference between a 6022 roof decking rod, and say 6011 rod. The alloy is the same, but the flux makes a huge difference in arc control. This allows you to effectively weld thicker materials with the same heat settings as true-MIG.
For our purposes, the material we weld is mostly thin gauge and indoors and MIG and TIG produce more desirable results on buggy frames.

[ruthlessxbeastx]

well put ttginc.
now what i have forgotten wwas what do all the numbers stand for on a stick rod.
tensile strength,(blank???), and position.
correct? i just forgot what one means i know i have it written down somewheres

[ttginc]

the first two numbers are approx tensile strength in thousands. The third number is position, and the fourth is the kind of flux or something. 60 - 60,000 lbs tensile, 2- flat position, 2 - the flux I would presume. This rod is meant for making deep puddle welds on decking to affix it to the beam below.

[ruthlessxbeastx]

i know what rods to use i was just curios on what one number ment and that was the flux.
so then 1 would be all position correct?
because i know 6011 and 7018 are all position rods

[Deranged]

Here at work we use a dual shield for all of our structural welds, and a Co2 gas for shielding, which IS a "cored" wire. But you can't weld with out the gas.

[ruthlessxbeastx]

yaaa but also your wire size is huge!