If you are looking for a low cost with high productivity welding machine for steel, stainless steel, aluminium alloys and silicone bronze, the best option is Mig welder that is easiest to learn for beginners. It can weld thinner metals and provides cleaner welds. Fume rates are at very low levels if you will compare it to stick welding and flux cored welding.
In welding, two important factors are very important – the machine and the technique. The type of welder chosen usually depends on the specific application that requires welding. There is no such thing as a one-size-fits-all welding machine. During the selection process, it also important to consider the pros and cons of the different welding processes that are best suited for the specific application.
The most common welding processes include:
- GMAW or gas metal arc welding which is more popularly known as metal inert gas (MIG ) welding
- GTAW or gas tungsten arc welding or tungsten inert gas (TIG)
- FCAW or flux cored arc welding, and
- MMAW or manual metal arc welding which more commonly known as stick welding
According to Willem Corbett, development engineer of Welding Industries in Australia, the factors that must be chosen when selecting a welding machine includes the type of material that will be welded, material thickness, required weld metallurgy, welding position, power supply, available current and time requirement.
Aside from the welding process and the metals that will be welded, it is also important to take into account the required welding power of the machine including the amount of weld time. This will help you determine the duty cycle of the machine. Matching he machine with the welding requirements could make a big difference between profit and loss.
Welding machines also have different amperages and power requirements. For example if you are going to use a Mig welder for a welding project, you will likely require 90 to 120 amp range. The power that will be consumed will depend on how long you will weld using 220 volts. You will not notice a big difference in your utility bills if you use the welding machine occasionally.