Coated Arc Welding - Edwards @ Wiki

1.2 Coated Arc Welding summary
      The coated arc welding rod is connected to the output side of the welding machine,
      clamped in the holder, and discharged between the welding rod and the base material for welding.

1.3 Advantages and disadvantages of the welding
1.3.1 Advantages

1. In the case of a high strength joint,
   the joint retains the same strength as the base metal even when cutting the surplus.
   Note The "Surplus" is the excess welding metal in the welded portion
    
2. Light weight for bolt and rivet connection
    
3. By shortening the work process low price

1.3.2 Disadvantages

1. Induce deformation
    
2. Internal stress is generated at the welding part and welding to induce residual stress
   Note The "Residual Stress" is the stress induced in the joint structure
    
3. Material of base metal changes due to welding heat effect