MODULE - III

Shielded Metal-Arc Welding (SMAW)

Submerged-Arc Welding (SAW)

Submerged-Arc Welding (SAW)

Gas Metal-Arc Welding (GMAW)or

Metal Inert Gas Welding(MIG)

Flux-Cored Arc-Welding (FCAW)

Flux-Cored Arc-Welding (FCAW)

Electrogas Welding (EGW)

Electrogas Welding (EGW)

Electroslag Welding (ESW)

Gas Tungsten-Arc Welding (GTAW)

Plasma-Arc Welding (PAW)

Thermit Welding (TW)

Electron Beam Welding (EBW)

Laser Beam Welding (LBW)

Ultrasonic Welding (USW)

Friction Welding (FRW)

Resistance Welding (RW)

Resistance Seam Welding (RSEW)

Resistance Projection Welding (RPW)

Explosion Welding (EXW)

Diffusion Bonding (DFW)

Diffusion Bonding (DFW)

Fusion Weld Zone

Regions in a Fusion Weld Zone

Incomplete Fusion

Discontinuities in Fusion Welds

Cracks in Welded Joints

Distortion After Welding

Destructive Techniques

Destructive Techniques

Testing of Spot Welds

(a)Tension shear test for spot welds.(b) Cross-tension test., (c),Twist test, (d) Peel test