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MIG Welders: Job Description
In order to comprehend what MIG welders do, the first thing one needs to take a look at is what MIG welding is. Following is an summary.
MIG welding is a type of resistance welding. It is a procedure by which various sheet metal goods are welded together. These metal sheets normally range in thickness from .8 to 5 mm. In the course, MIG welders take two or more formed copper alloy electrodes, which allow them to concentrate their welding efforts in a small “spot”, which keeps the sheets together. MIG welders will then power a large current through this spot, which melts the metal sheets, completing the weld.
The Value of MIG Welders
The benefit of MIG welding is that a large amount of energy can be brought to one spot in a very short phase of time – literally in milliseconds. MIG welders, in essence, weld without bringing needless heat to the rest of the metal sheets.
What determines how much of the heat is brought to the pre-determined area? This is where the real ability of MIG welders come in. For, the amount of heat applied to bear to a particular spot is determined by the opposition between the electrodes and the amplitude and length of the current. Qualified MIG welders know how to match such tangibles as the sheet metal’s properties, its thickness and the type of electrodes. All of this is important because if not enough heat is given, then the metal won’t melt. If too much heat is applied to a spot, then a hole can result, and not a weld.
Accomplished MIG welders know how to aggregate all of the factors to avert overheating or under heating a spot. Their knowledge is in judging exactly how much heat needs to be applied to create the perfect weld.
A Fertile Market for MIG Welders
Many MIG welders work in the automotive industry, because to make cars, sheets of metal must be welded together.