Are you thinking about getting into welding? If you do, before purchasing any equipment, you should ask yourself what kind of welding you are interested in doing. Most welding machines are capable of making most joints in metal. However, they all have their own specifications. That is, they are better at some jobs than others. The most universal among them is the Mig welder.
Let’s start with arc welders. Arc welders are tools that are used to make a weld using heat that is generated from high voltage electricity. There are several types of them, Mig, Tig, and stick. The difference between them is the gas shield. For the Mig welder, the gas shield is created by a cloud of gas released from a tank connected to the welder. The tank is filled with a mixture known as Metal Inert Gas by the industry.
The recipe for the gas varies. However, none of them will react with metal and add contaminants to the weld. The gas is pumped through the welding cable from the metal tank that either you had buy or lease. The gas comes out of the same nozzle that the welding wire is fed through. It literally creates a protective cloud around the arc as you weld.
A Mig welder has several heat settings that allows the welder to set the machine to just the right power to get a deep weld with good penetration but not so much that burn a whole. It is likely that you will do this a few times before you get it right. Don’t worry. Even an experienced welder sometimes surprised and end up having to make last minute adjustments.
Other than the heat setting, there is also an adjustment to the feed rate of the wire. It will vary by equipment and project. Again, don’t worry. As you get to know the welding machine and your jobs, you will fine tune the feed rate. And yes, getting both the heat and the feed settings right before doing the job can save you time and money.