Different Types of Welding Machines

Welding machines are useful for a number of joining processes. This includes arc welding, resistance brazing, laser soldering, electronic beam soldering, orbital fusing, and more. Each type of machine features different devices that include power sources, monitors, and controllers for brazing, soldering, and welding. One of the most versatile and common types of welding machines are metal inert gas or MIG welding machines.

They are useful in home workshops and industries for welding different metals such as steel, stainless steel and aluminum. This is a process in which a continuous electrode and shielding gas is fed through a MIG torch or welding gun. Carbon dioxide gas is commonly used for general purpose welding since it's cost-effective and creates good welds. The voltage, amperage and speed of electrodes and shielding gas through the welder could be adjusted.

In addition, the flow of gas can also be controlled through a flow meter while the tension on the welding wire is variable as well. Tungsten inert gas welding machines are useful in welding thinner sections of stainless steel and non-ferrous metals such as copper alloys, magnesium, and aluminum. The process involves a tungsten electrode that delivers the current to the soldering arc, a shielding gas such as argon to protect the weld area from contamination, and a filler metal.

TIG welding machines offer the operator greater control when compared with MIG welding. These machines are available with DC or direct current and AC/DC alternating current, direct current which is useful for fusing ferrous types of metals and both ferrous and non-ferrous types. TIG welds are clean without the buildup of sparks and fumes, which makes it ideal for welding metal artwork. It is also used to weld aluminum cycle and motorcycle frames and food processing equipment.

Arc welding or stick welding machines use a power supply to form an electric arc between an electrode and base material that melts the metals at the fuse point. Either alternating or direct current could be used. The electrode is made from a material compatible with the base material that needs welding. It's covered with flux to produce carbon dioxide gas to prevent oxidation and contamination. Arc welders are available in two types.

Alternating current welders are air-cooled or oil cooled while a direct current welder uses an air cooling system. Inverter welders are the most common type of DC arc welders. While arc welding is generally limited to ferrous metals, it is also possible to weld cast iron, copper, nickel, and other non-ferrous metals. Therefore, arc welders are useful for a number of applications in repair work and construction.

Welding equipment comes in a variety of shapes and sizes ranging from small welders for home use to industrial machines used in specialized industries such as automotive and construction. Mig, Tig, arc and spot welding machines are the common types used today.

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