Learn How To Mig WeldSeptember 9, 2019
Going by the description of the name, you need to feed wire. As this wire is feeding, electricity melts it and the base metal together. This is essentially how it works. As long as you keep wire up to the electric arc you will be able to weld all day long.
First with aluminum we will set our Welding Machine China to AC meaning alternating current. Make sure your tungsten is sticking no more than one diameter of the electrode out of the cup in the torch. Make sure you clean your workpiece with a clean stainless steel wire brush. Now I use the green tip tungsten for more economical use. Tip is green letting you know the type of tungsten it is. Green means pure-tungsten in this application on how to weld aluminum.
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Now if you do decide to use a gasless MIG welding wire you are going to have to change the wire feed rolls. The reason for this is because it is a flux cored wire the wire is not solid all way through. So because the flux is on the inside of the wire the wire is very soft.
I guess that most DIY or home welders will use what is called a gasless welding wire. This is also known as a flux cored wire. Be careful though because there are two different types of flux cored welding wires. Well actually there are a lot more than two, but for general home welding make sure that you get a gasless MIG welding wire that is a E71T-GS.
Spray transfer mig welding requires a different shielding gas than what is normally used for short circuit mig welding, ( I will explain short circuit mig later) gas mixtures of 90/10 argon/co2, 95/5 argon/co2, and 98/2 argon/o2 are used for spray transfer mig along with much higher voltage settings.
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