Best Gas For Mig Welding Sheet Metal

Mig welding sheet metal.

Best gas for mig welding sheet metal.

The hobart handler 140 mig is the best affordable mig welder for sheet metal. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. It is better to avoid using a flux cored wire when welding sheet metals. Usually copper or aluminum because they dissipate heat best clamped.

With these materials use a tri mix gas 90 helium 8 argon and 2 co 2. Wires are compatible but for welding 316l stainless you need a 316l wire. When starting to learn auto body sheet metal welding with a mig welder you should opt for a shielding gas that has a higher proportion of argon gas. The best thing about argon is that it carries less heat than co2 which further results in less spatter.

To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Mig welding is the preferred method for most automotive bodywork and since sheet metal is the thinnest of metals a large expensive mig unit is usually not required. The best one to use is a mixture of 75 argon 25 carbon dioxide. Otherwise you may find a lot more splatter than you have imagined.

While sheet metal is primarily a tig welding job there are times when it s handy to have an available mig welder to fuse sheet metal. Welding gas for stainless steel while choosing the shielding gas for mig welding stainless steel welders usually prefer a mixture consisting of argon 98 and co2 2 while some prefer to use the gas mixture of helium 90 argon 7 and co2 2. As for shielding gas a higher argon based gas is recommended. It is better to use instead of a high percentage of co2.

It s one of the highest quality machines available and comes incredibly low priced. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. The main reason to use a smaller diameter wire is that it takes less heat for melting and hence the metal around the weld is not heated to a very great extent.