Mig welding is a very economical welding process that is more efficient than other weld techniques.
Automated welding robots can be setup to do MIG with breath taking results. Welds so perfect and done so fast it is fascinating to watch. These robotic cells are used throughout the manufacturing world for car and truck manufacturers right down to the smaller job shop type engineering works.
The fancy name for this is called Gas Metal Arc Welding or GMAW for short.
It is defined as a continuous feed of electrically charged wire into the welding arc. This constant feed of wire allows the electrical connection to heat the metal and create beads of melted wire, which turn into welds when cooled.
Here are some reasons why it is a preferred process to use:
1. Is reasonably simple to do.
2. It is the most efficient method as it can get the same job done quicker.
3. Because it is a faster technique it becomes more economical than other methods.
4. Welding automation devices can be fitted to maximise productivity.
5. Can be used with or without a shielding gas.
If you use a shielding gas you’ll use what is called a solid wire, and if you don’t need to use a shielding gas you’ll use what is called a gasless wire. But if you compare the two welding wires the solid welding wire with the shielding gas will have a much better weld bead appearance.
It is a very versatile machine because you can work with a whole range of different types of metals. The most commonly welded materials using this process are stainless steel, mild steel and hardened steel such wear plate and aluminum.
A quick couple of pointers before you go out and buy a machine and they are. You need to work out what size material you plan on welding, because if you get a machine which is too small and doesn’t have enough power or duty cycle you’re going to run yourself short.
After deciding on what will be the main thickness and type of materials you plan to work with you can then start to research what machine to buy. I would suggest that you got a unit that is slightly bigger than what you need right now, as no doubt there will come a day when you wished you had. If you get a bigger one, your duty cycle will also be better and this will allow you to keep welding for that little bit longer.
At the same time you are going to need to get some spare parts to keep it running properly. The most common parts or consumables that you will need to have a constant supple of are item like. Contact tips, tip holders, gas diffusers, nozzles, shrouds, insulators and a spare liner. These are all depending on the model and brand of you mig welding gun. Drive rolls or feed rolls do need replacing as well but they do last a long time, it all depends on how much you are doing and what brand and specification of wire you are running.
It is possible to mig weld stainless steel, aluminum, mild steel, high tensile steel and all other sorts of metals. But the most common welded materials are mild steel, stainless steel and aluminium as using the mig welding process makes it very easy.