Classification Of Welding Processes

The classificated depending upon the nature of heat source and its movement resulting in spot, seam or zonal welds; or on the extent of heat generation viz., low heat and high heat.

1.Cast-weld processes

• Thermit welding
• Electoslag welding

2.  Arc , Beam, and Flame welding processes

A.) Seam welds

• Carbon Arc
• Submerged Arc
• Shielded metal Arc
• Fus Arc
• Gas tungsten Arc
• Gas metal Arc
• Plasma Arc
• Plasma -MIG
• Electrogas welding
• Electron beam welding
• Laser welding
• Oxy-acetylene welding

B.) Spot welds

• GTAW
• GMAW
• Stud welding

2.  Resistance welding processes

A.)  Spot welds

• Spot welding
• Projection welding

B.) Seam welds

• Seam welding
• Electric resistance welding
• H.F. Resistance welding
• H.F. Induction welding

C.) Zonal welds

• Resistance Butt welding
• Flash Butt welding
• Percussion welding

3. Solid-state welding processes

A.) High heat input processes

• Friction welding
• Forge welding
• Diffusion bonding

B.) Low heat input processes

• Ultrasonic welding
• Explosion welding
• Cold pressure welding
• Thermo-compression bonding