MIG Welding Machines
MIG welding machines are easy to use. Almost anyone can buy a MIG welding machine and be welding just minutes after plugging in the machine. Because of this, MIG welding machines have become very popular in recent years. MIG welding machines have come a long way since the 1980’s, due to technological advancements and inventions designed to enhance the power and performance of MIG welding machines.
MIG welding machines come in many sizes and one size machine is not suitable for all welding applications.
Smaller MIG Welding machines can weld up to a specific size material. Larger MIG welding machines can be adjusted when welding lighter gauge metals, but many of the larger units cannot be turned down enough to weld very thin metal tubing and auto body panels, the larger machines also will require at least a 220 volt source of electricity while some of the smaller MIG welding machines will run on the regular household current of 110-120 volts.
MIG Welding Machines : Advantages
The primary advantage of MIG Welding is it’s speed and simplicity. when MIG welding the deposition rate(amount of welding material deposited per unit of time) is about 4 – 10 times faster than a stick welding machine, and even faster when compared to TIG welding, Which is mostly due to the fact that you don’t need to stop and change welding rods, as the filler material is continuously fed through the MIG Welding gun.
MIG Welding produces less spatter, which makes for quicker clean up of the welded area.
MIG Welding Disadvantages (MIG : Maybe it’s Good)
Though subjective, typically MIG Welding beads are not as pretty as TIG or ARC welding beads.
MIG welding is in some cases notably less accurate than TIG and ARC welding. The most common reason for the lack of accuracy when MIG welding is that the MIG welding gun nozzle can obscure weld puddle. Also due to the high speed of weld material deposit and ability to easily create weld beads that look acceptable, MIG welding beads sometimes do not provide the correct level of penetration to the base material. All of these MIG welding disadvantages can however be overcome by maintaining your visibility of the weld puddle, by angling the MIG gun nozzle and adjusting your welding heat as high as you can without burning through and adjusting your wire speed feed to be able to linger in the weld pool long enough to ensure proper penetration without the filler material piling up. Often an oscillating or weave motion when MIG welding provides adequate time in the weld puddle as well as creating a more visually appealing weld bead. The drag or pull technique when MIG welding can increase penetration by as much as 10%.
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