How To Tig Weld Sheet Metal

Then as the bead cools and solidifies it contracts but by this time the metal pieces are fused together.

How to tig weld sheet metal.

Forget the larger 1 8 inch tungsten electrode and use a smaller one. The term invisible weld is kind of misleading. In this article we are taking a look at how people should go about welding sheet meta l what kind of wire and shielding gas need to be used along with some tips and tricks. Other sheet metal applications e g stainless steel in food service typically call for a size 7 tig cup.

Arc welding mig and tig entails fusing a filler metal with the materials being joined. Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. For welding sheet metal in aerospace applications use a 15 cup 15 16 inch diameter. S curves or welds on round things.

Tig generates heat via an arc of electricity jumping from a tungsten metal electrode to the metal surfaces you intend to weld usually aluminum. Ditch a 1 8 inch tungsten electrode for something much smaller like 1 16 inch tungsten. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. What is an invisible weld.

But using this method also requires some practice and practice advice in order to understand it. Mig welding is the easiest process to learn that has revolutionized autobody repair. Tig welding for sheet metal. When it comes to welding thin sheet metal like car body panels if you are not experienced and skilled enough then you can easily create a mess as blow holes in the sheet and make the metal useless.

That heat spreads out making the metal expand. How to weld auto body sheet metal with a tig welder the best two electrodes for welding auto body sheet metal is either ceriated tungsten or thoriated tungsten. In this welding sheet metal video what is meant by invisible weld is a tig weld that is ground flat planished with a dolly and auto body tool and then fine sanded so that it looks like shiny bright metal and it is not obvious where the weld is. Welding sheet metal is a special type of welding which requires a special technique.

Tig welding sheet metal. When you re welding body panels you can either mig weld or tig weld. Watch the welding sheet metal video and learn. When welding steel this weld bead is laid down at around 2 500 f 1 370c.

Learn how to weld sheet metal on a car. Tig welding is one type of welding amongst a few choices you have mig stick oxyacetylene etc.