what is the difference between a welder that is 'gasless' and one that uses gas.?

Question

what does each one do to your job.... which is better???
i curently have a gasless one....um i have been told that there is no difference by the shop assitant..but u know how reliable they r....

Answer 1

gasless welders, from my understanding, don't have enough fiber in their diet.

Answer 2

TIG is the best welder for aluminum. I doubt your budget will be high enough to cover one though. A "stick" welder can do aluminum, but not as well as TIG. A MIG welder can also do aluminum, but you need a special gun and gas connection. To be honest, since you don't know much about welders, don't buy one. Perhaps a card with an offer to let him buy one would be best. Welders know what they want and all the features.

Answer 3

I assume that you are talking about a 'Mig Welder' ?
In welding operations when the arc is struck there is an enviroment created in the area of the arc to keep out certain elements (eg. oxygen) which effect the quality of the weld. This 'enviroment' is formed in two ways: by (a) burning a chemical coating on or in the electrode (flux) or (b) a gas supplied into the area.
With a "gasless" welder the enviroment is formed by (a).
In the case of Mig Welding the 'flux' is supplied inside the wire (Flux Cored Wire), and in stick welding as a coating on the outside of the electrode.
In the case of a welder that uses gas, the gas (CO2 in ferrous welding & Argon for alloy) is supplied to the arc from a gas bottle via the welding nozzle.
In your case it appears that you will need to specify "Flux Cored Wire" when you purchase your supplies.

Answer 4

The only difference between gas and gasless welding is the polarity of the hand piece and the work eg. neg and positive.

One thing to remember with gasless wire is that it is Hydroscopic, its absorbs water from the atmosphere. This will degrade the quality of the welds.

Welders that use gas are easier to use I belive..

Answer 5

There are differences..

Gas welding ( Like TIG or MIG Welding ) is more efficient at preventing oxides from forming on the newly welded area, which then over time will weaken the joint due to corrosion taking place inside the welded area.

Gasless ( Like Electric-Arc Welding ) uses the flux on the rod to accomplish the same thing but not as effectively as gas welding.
At the end of the day it all depends on the quality and life you want to obtain for the finished product.
Also how much money you can fork out on the equipment!

I take it you were not talking about Oxyacetylene Welding...which does not offer any protection from oxidation of the metal.

Answer 6

Hi I'm Gary,

If you have paid for this product, call the vendor and speak to a manager for exact details.. don't talk to a shop assistant, request a manager.

I personally don't know the difference but I'm really good at knowing and taking what is lawfully mine as I've paid for it..

Simply wishing you the best of luck,

Garry

Answer 7

In my job i use a gas mig it uses a mix of Co2 and Argon the machine works just fine it`s a Esab mig master 250 as far as the flux core wire i have not used i have heard about people that have used them and they didn`t like them

Answer 8

Gas welders are better

Answer 9

R U asking about electric welder????

Answer 10

Gas protects against oxydation.