When it comes to welding light gauge sheet metal most would prefer tig.
Welding stainless sheet metal.
The team programs a mig welding robot to perform the weld and places the workpiece inside.
For most jobs welding stainless steel you ll want to use 030 inch diameter stainless steel welding wire.
Stainless sheet metal fabrication projects can be tricky.
The best way i have found to tack weld stainless steel sheet metal is.
Not only do you need to know how to weld stainless but you need to learn how to tack the stuff too.
For thicker base pieces step up to 035 inch to 045 inch welding wire.
For mig welding stainless steel a shielding gas mixture that s 90 percent helium 7 5 percent argon and 2 5 percent carbon dioxide is generally ideal.
With these materials use a tri mix gas 90 helium 8 argon and 2 co 2.
Https goo gl frdnss to download the stainless steel welding filer metal selection chart visit.
Tig welding is a very slow proce.
How to mig weld stainless steel.
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When welding 304 stainless steel er308 er308l and er308lsi wires are compatible but for welding 316l stainless you need a 316l wire.
The best way to estimate the heat input needed for welding is by applying the 1 for 1 rule this means that 1 amp should be used per 1 thousandth 0 001 inch of thickness.
Make sure the fitup is tight with absolutely no gap.
It is imperative you consider the shielding gas welding process and electrode before welding 20 gauge sheet metals.
This is especially useful for carbon steel.
Some things that need to be considered include.
In the us sheet metal is designated through the gauge the larger the number the thinner the metal.
In most cases mig welding stainless steel wire and sheet metal forms is pretty simple for marlin s manufacturing team.
1 for 1 rule.
Most people are not familiar with this weld method.
However even this simple process has its complications.
To weld sheet metal with solid wires use electrode positive ep or reverse polarity.