Stainless Steel Sheet Welding

Even though most of the welding machine manufacturers have included a table of materials and voltage settings in the machine it is highly important for you to pick the right kind of gas and electrode wire to be used for mig welding stainless steel.

Stainless steel sheet welding.

The shielding gas recommended for short circuiting welding of stainless steel contains 90 helium 7 5 argon and 2 5 carbon dioxide. In resistance welding lower current can be used because resistivity is higher. The gas gives the most desirable bead contour while keeping the co2 level low enough so that it does not influence the corrosion resistance of the metal. The best way i have found to tack weld stainless steel sheet metal is.

Welding is a way to combine pieces of stainless steel together for repair work and even craft projects. For most jobs welding stainless steel you ll want to use 030 inch diameter stainless steel welding wire. With these materials use a tri mix gas 90 helium 8 argon and 2 co 2. Alternative gases that you can use are 98 argon and 2 co2 or 98 argon and 2 oxygen mix.

In most cases mig welding stainless steel wire and sheet metal forms is pretty simple for marlin s manufacturing team. For thicker base pieces step up to 035 inch to 045 inch welding wire. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Stainless steels which require special welding procedures are discussed in later sections.

Some things that need to be considered include. Less welding heat is required to make a weld because the heat is not conducted away from a joint as rapidly as in carbon steel. In addition to welder skill and equipment availability the application priorities cost productivity and bead appearance for example influence which stainless steel welding process fabricators ultimately choose. When welding 304 stainless steel er308 er308l and er308lsi wires are compatible but for welding 316l stainless you need a 316l wire.

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. The team programs a mig welding robot to perform the weld and places the workpiece inside. However even this simple process has its complications. Again stainless steel and the filler metals used to weld it generally are more expensive than carbon steel.

Then join the steel together through mig or tig welding. 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. Mode of metal transfer.