First you need a decent TIG welding machine. Not a great one, just a decent one. Already got one? You might have an old Synrowave 300 or a DialArc, an old Hobart CyberTIG or you might have a brand new Miller Dynasty 200DX.
Know what? It doesn’t really matter. The same principles apply. If you have an old as dirt TIG China Welding Equipment, you can still make good aluminum TIG welds. Weld beads that look like a stack of dimes.
Hold the torch like a big first grade pencil. Touch the tip of the tungsten to the metal and then pull it back about 1/8 inch. Flip your helmet down and press the pedal to initiate the arc.
One of the important decisions one has to make is whether to buy new equipment or going for used welding equipment. There are many manufacturers of these equipments – Miller, Lincoln, Esab, Hobart – so which one is the most suitable for your needs. You might also have the question whether to go for all in one machine that can be used for multiple processes, or buy a separate machine for each process? You need to decide between Oxyfuel cutting outfit and plasma cutter; air compressor or electric grinders etc.
Next check its engine, make sure that the engine too has at least three cylinder capacities so that you can rely on the power it generates. Make sure the diesel tank is equipped to generate longer run time.
Make sure that the mig welding wire diameter fits the right sized grove in the feed roller. When running a precision welding wire you need to use the right feed roller groove for the correct diameter sized mig wire.
So what can you do to fix this problem with your mig welding gun. While the obvious choice is that you have a clean workshop. But what if you can’t do this? What if you live in a dust bowl where it’s blowing a gale every single day and there’s dust flying around everywhere? Well the only real thing you can do is regular maintenance on your welding equipment. This means you’re going to have to clean out the liner every so often, which all depends on how much welding you do. Simple things like when it’s not being used cover it with a tarp.
At first you need to turn on the welding machine. An electric arc is being generated when the welding rod comes in contact with the juncture of fusion. Generally, Tap Starting and Scratch Starting, are used for the process of electric arc generation. In Tap starting method, an electrode is used to tap on the work that removes excessive flux from electrode tip, which meanwhile creates an electric contact to generate the arc. While in scratch starting method, the rod is made to scratch against the surface of the work slightly and as the spark is generated, the rod can be lifted off. Also, remember not to put extra pressure in the method, because through this the rod might get stuck to the work medium.