How To Weld Stainless Steel Sheet Metal

If you are working on a stainless steel material using gnaw use a mixture of 98 argon and 2 carbon dioxide.

How to weld stainless steel sheet metal.

Shielding gas is used to protect the weld from contaminants with the basic idea of having more argon in the mixture. This is especially useful for carbon steel. However even this simple process has its complications. Set the tig welder to hit it hot and fast when you press the button or foot pedal.

This is basically a common and unique process for joining stainless steel. Make sure the fitup is tight with absolutely no gap. Gmaw has moderate equipment complexity and operator skill requirements and for stainless steel welding it can be used in pulse or spray transfer mode. In most cases mig welding stainless steel wire and sheet metal forms is pretty simple for marlin s manufacturing team.

Mig metal inert gas welding. Many fabricators perform gas metal arc welding gmaw of stainless steel with a solid wire. Bracing the joint during welding. Weld the stainless steel use the push technique for mig welding stainless steel whenever possible.

This process is performed by using a non disposable tungsten electrode with a tig welder for striking up the arc. 1 for 1 rule. 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. Prop your tig cup right on the joint with the sharp tungsten electrode tip less than 1 16 from the joint.

But when it comes to stainless steel or other nickel based metals less heat is needed. How to mig weld stainless steel. The best way i have found to tack weld stainless steel sheet metal is. The team programs a mig welding robot to perform the weld and places the workpiece inside.

Also known as gas metal arc welding gmaw. The process uses an inert shielding gas and a semi automatic wire feed which acts as the filling material. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Some things that need to be considered include.

Do this by pushing the welding gun away from the weld puddle instead of pulling it or by using a push pull method. This technique produces less beading and offers a better view of your work. For stainless 316 use 316 filler for stainless steel 304 use 308 filler metal for carbon steel use 309 filler metal. A low cost yet highly productive method of welding which can be used on all common metals and alloys.