Electric arc welding has been the most common and fastest means of joining metals when compared with gas welding. Most industries uses arc welding due to it effectiveness of joining metals and how it offers great speed of work. This operation is done using welding power supply to create an electric arc between the electrode and the base metal. Heat produce with arc welding are less expensive due to the source of heat been from electricity non like gas welding that uses oxygen and acetylene gas to produces it flames.

at the end of this articles, the reader is expected to understand the six types of arc welding. The following listed below are different types of arc welding:

  • Flux-cored arc welding (FCAW)
  • Gas metal arc welding (GMAW)
  • Gas tungsten arc welding (GTAW)
  • Plasma arc welding (PAW)
  • Shielded metal arc welding (SMAW)
  • Submerged arc welding (SAW)
  1. Shielded metal arc welding (SMAW)

This type of arc welding is simple, versatile and one of the oldest welding methods. It is commonly used in constructions, pipeline work and shipbuilding. The arc is obtained when the coated electrode tip touch the workpiece. heat generated melts the tip, coating, and base metal and the weld is formed out of that alloy when it solidifies.

2. Flux-cored arc welding (FCAW)

This type of arc welding are popularly used when welding heavy metal materials like thick tanks, to a higher weld-metal deposition rate. It uses cannular electrodes that are filled with flux and less brittle than the coatings on Shielded metal arc welding electrodes and protect most of the alloying benefits.

Fig show: flux-cored arc welding

3. Submerged arc welding (SAW)

This type of arc welding has a granular flux that is fed into the weld zone that forms a thick layer, completely covering the molten zone and preventing sparks and spatter. It allows for deeper heat penetration since it acts like a thermal insulator. The process is limited to horizontal welds and used for high speed sheet or plate steel welding. It can be semiautomatic or automatic. The flux can be recovered and treated then used again. This method provides 4-10 times as much productivity as shielded metal arc welding.

4. Gas tungsten arc welding (GTAW)

This type of arc welding is also known as TIG welding. It gas contains argon and helium or mixture of the two. It uses tungsten electrodes as one pole of arc in order to create heat needed. Filler wires can also be provide to act as molten materials to the surface welding is required only if necessary. Gas tungsten arc welding is good for thin materials.

5. Plasma arc welding (PAW)

This is another type of arc welding that has ionized gases and electrodes, which generate hot plasma jets that are aimed at the welding area. Due to extremely hotness of the jets, the concentration of higher energy is good for narrow and deeper welding which can also lead to increase in welding speeds.

fig show: plasma arc welding

6. Gas metal arc welding (GMAW)

This type of arc welding is simple, competent and economical. It temperature are relatively low and can be use for thin sheet and section. The gas metal arc welding is also called MIG welding. Furthermore, gas metal arc welding shields the welding arc with a gas such as argon and helium or mixture of both. The electrode contains deoxidizer to prevent oxidation in order to weld multiple layer. This arc welding can be automated.

i hopefully believed you now understand the six types of arc welding, if so cheers. hey dude you don’t have to leave yet there’s lot more you still need to learn and don’t forget to share with other technical student. watch in video clip below;