Put on your safety gears.
Welding of stainless steel sheet.
Setting the steel in place.
Gmaw has moderate equipment complexity and operator skill requirements and for stainless steel welding it can be used in pulse or spray transfer mode.
Therefore the recommended shielding gas to use for short circuit stainless steel mig welding is a tri mix shielding gas such as 90 he 7 5 ar 2 5 co2.
For these types of materials a tri gas mixture is recommended which consists of 90 helium 8 argon and 2 co2.
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.
Make sure the fitup is tight with absolutely no gap prop your tig cup right on the joint with the sharp tungsten electrode tip less than 1 16 from the joint set the tig welder to hit it hot and fast when you press the.
Furthermore if you plan to weld stainless steel er308 er308l and er308lsi welding wire are best used.
Bracing the joint during welding.
Using a mig torch on steel.
In most cases mig welding stainless steel wire and sheet metal forms is pretty simple for marlin s manufacturing team.
Many fabricators perform gas metal arc welding gmaw of stainless steel with a solid wire.
Use mig welding to join thicker pieces of metal.
The cost per pound for solid wire is less than other choices but the shielding gas is an added expense.
With stainless steel welding the issue is compounded by the fact that stainless steel has a more sluggish weld bead as discussed already.
However even this simple process has its complications.
For any of these processes joint surfaces and any filler metal must be clean.
Some things that need to be considered include.
This is the number one most crucial thing every welder must do before beginning to weld.
But in the case of 316l stainless you will need to incorporate a 316l wire.
The step by step process to weld stainless steel both mig tig welding so now that we have all the pieces in place let s combine them and get the actual job done.
At first you need to put on your welding jacket or at least a full sleeve shirt in order to protect your arms and upper body area.
Put on a welding mask and protective clothing.
Mig welding is fast and.
Wear a full length shirt and.
To weld sheet metal with solid wires use electrode positive ep or reverse polarity.
For most jobs welding stainless steel you ll want to use 030 inch diameter stainless steel welding wire.
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 i have found to tack weld stainless steel sheet metal is.
How to weld stainless steel method 1 of 3.
For thicker base pieces step up to 035 inch to 045 inch welding wire.
With these materials use a tri mix gas 90 helium 8 argon and 2 co2.
