Types of welding

Types of welding

1. Welding is the permanent bonding of metals by the action of heat. An additional filler material can be applied together with the base metal to get a better welding

2. According to the composition of this filler material

   • Autogenous
     • Filler material is not required
   • Heterogeneous
     • Filler material has different composition as base metal
   • Homogeneous
     • Filler material has the same composition as base metal

3. If the base material does not melt during the welding

   • Soft welding (soldering)
   • • Strong welding (brazing)

4. If the base material melts during the welding

   • Oxyacetylene welding
   • • Arc welding
     • Shielded metal arc welding
     • Gas metal arc welding (GMAW) / Metal inert gas (MIG)
     • Gas tungsten arc welding (GTAW) / Tungsten inert gas (TIG)
   • Resistance spot welding (RSW)

5. By means of welding, two or more materials can be bond each other through joints

   • Lap joints.
   • T-joints
   • Butt joints
   • Corner joints
   • Edge joints