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.
The mig welding depends upon the voltage and feed rate. When you use this Portable Welding Machine see that the voltage and feed rate are set properly. Another thing to remember is to wear the protection gloves and helmet. That’s because when the metal is connected with the welder small spark are thrown out. Which means it can damage your eyes and can burn your skin. Another important thing is work in an open space. Before working with mig weld see that the place doesn’t have any object which can catch fire in no time. If you are a beginner in this field then first try to practice on small scraps of metals.
Usually in most cases the cause of erratically feeding wire in your mig welding gun simply comes down to wear, tear, and dirt. Coming from a country and rural area I have seen a lot of different welding workshops of which I can compare to workshops in the city. A lot of these workshops out in the country quite often don’t have a concrete floor. With all the wind out there a lot of this fine dust is picked up and blown throughout the whole workshop, and those places that don’t have a sealed floor all their welding equipment gets totally covered in dust.
Don’t melt the aluminum right away though, watch the black stuff cook away from the arcs cleaning action before you melt the metal. Then press the pedal far enough to create a puddle that is about 3-4 times the thickness of the metal you are welding.
Before we start, let’s get an understanding of what happens when we strike an arc with welding electrodes. The size of the welding rod, amperage and plate thickness determine weld fusion (adhesion) initially. In other words, a large diameter welding rod on a thin steel plate will blow right through it. On the flip side, a small diameter welding rod on thick steel plate may not start the arc and, if you do, the weld will not fuse to the steel but simply lay on the surface of the steel plate. This is where preheat comes to your aide. Preheat allows you to use small welding electrodes with thick steel plate.
If you’re going to weld pipe, stand out. If you’re currently a pipe welder or you want to be one, determine now to practice enough that you are in total control. How can you do that? Practice at the edge of your ability, and do it a lot.
Spatter, burn backs wire not feeding properly and so. What’s going on, they think to themselves. “Ahh, I know, it must be a worn contact tip”. So off they go and replace the contact tip with a new one. But no, sure enough same problem. “Well, it’s been a while since I change the liner”. So off they go and do that. Yet sure enough the same problem is still there.
Welding equipment for sale are available all over the Internet. What you need to be thinking about is how much you are willing to pay for your welding machine. If you want to pay the most money than you can get a new welding machine, but you will be paying a lot more than if you get a usable machine. Use welding equipment can be just as good as new ones, but they dont come with a shiny new packaging and sometimes they will carry less of a guarantee than new welding equipment. This is completely up to you.