We can divide the welding processes into two major groups. Pdf a welding joint is a point or edge where two or more pieces of metal or plastic are joined together. Each of the above type of welding can be further classified depending on other micro level characteristics. Welding revo technologies and enterprisesan iso 9001. There are many different types of welding processes and in general they can be. The welding process involves applying heat and pressure to the materials being joined, in addition to a filler material, in order to create a weld pool which cools to form a strong joint. The most popular processes are shielded metal arc welding smaw, gas metal. Welding processes can be classified on the basis of following techological criteria. Bob and sparky introduce us to the world of welding. For further information on the categorization of the welding, joining, cutting, and allied processes, see appendix a.
Fusion welding in fusion welding or non pressure welding, the material at the joint is heated to molten state and allowed to solidify. The most common types of welding are oxyfuel gas welding ofw, arc welding aw, and resistance welding rw. This lecture will give you an in depth knowledge of different welding processes and about their classification as per the industrial norms. Types of welding processfusion,nonfusion and pressure. In fact, mig welders can often perform double duty as a fcaw welder as well. Pdf lecture 2 classification of welding processes i social mufti. Welding with or without filler material source of energy for welding arc.
At the time of the preparation of this chapter, the referenced codes and other standards were valid. Plastic welding in plastic welding or pressure welding, the pieces of metal to be joined are heated to plastic state and then forced together by external pressure. Therefore, in this article, i will be explaining all types of welding process in detailed with the help of tree diagram. Welding processes, 4 volume 2 of the american welding societys welding handbook, 8th edition, presents in1. English types of welding classification of welding. Pdf lecture 2 classification of welding processes i. They cover smaw or stick welding, gtaw or tig welding, and gmaw or mig welding.
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