How To Tig Welding Sheet Metal

This means that 1 amp should be used per 1 thousandth 0 001 inch of thickness.

How to tig welding sheet metal.

Tig welding takes allot of practice to master so don t get discouraged. For welding sheet metal in aerospace applications 15 cup or larger is required. Personally i hate to weld with low frequency pulsing like this. When it comes to welding sheet metal delta techops treats most applications except aluminum as it would titanium.

Getting the knack of tig welding is mostly in getting the weld pool to form at the same time on both pieces of metal. If you are working on auto body sheet metal you may want to buy a 120 volt mig welder. The best two electrodes for welding auto body sheet metal is either ceriated tungsten or thoriated tungsten. He uses a small piece of copper sheet for backing.

This is especially useful for carbon steel. The next is the lap weld which is two metals resting flat against each other. The one shown in this instructable. I have a hobart 135 with 023 wire that works perfectly on 22 gauge body panels.

You can count the pulses and its exactly 3pps or 3 pulses per second. Ditch a 1 8 inch tungsten electrode for something much smaller like 1 16 inch tungsten. Sheet metal tig welding tips 1 for 1 rule. Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal.

The mig welder also gives you a free hand to hold the heat sink with. Because it will have you a lot more control over the whole process and it is more forgiving in case you do anything wrong. To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Vise grip type sheet metal clamps are used to hold everything together and pulse tig is used to weld.

A large cup gives better gas coverage of the weld puddle and heat affected zone which reduces total heat input and improving bead quality. The easiest type of weld is the fillet two metals jointed at right angles. The best way to estimate the heat input needed for welding is by applying the 1 for 1 rule. It should also improve bead appearance.