ABSTRACT
A welding joint is a point or edge where two or more pieces of metal or plastic are joined together. They are formed by welding two or more work pieces (metal or plastic) according to a particular geometry. The strengths of these joints are of great concern as in today’s world these joints find a very crucial place in the growth of structures and machine parts and it is the strength of such joints and welding which decides the service life of such structures and thus prevents loss whether they be human losses, economic losses or any other losses. In this chapter the concept of welding and weldability, arc welding, arc welding equipment, electrodes, gas welding, types of flames, gas welding equipment, resistance welding, design of weld joints, butt joints, fillet joints, allied processes, i.e. soldering and brazing, special welding processes, i.e. plasma arc welding, metal inert gas arc welding (MIG), TIG welding, automotive applications of welding, welding procedure for automotive manufacturing are discussed in detail. The assignments based on learning are also presented to develop the numerical ability of learners.
