Welding is classified based on what criterion?

Welding is classified primarily based on the method of producing the heat necessary to fuse the materials together. This criterion encompasses the various techniques and processes utilized in welding, such as arc welding, gas welding, resistance welding, and laser welding. Each method produces heat in its unique way, whether through the electric arc, combustion of gases, or electrical resistance.

The classification by heat production method is significant because different techniques offer distinct advantages, limitations, and applications depending on factors like the materials being welded, the desired properties of the joint, and the working environment. Understanding these methods allows welders to select the appropriate technique for a given task, ensuring quality and efficiency in the welding process.

Other potential classifications, such as the type of metal used, temperature required, or duration of the weld, do not fundamentally encompass the diverse range of welding methods and are less frequently used as primary classifications. This focus on heat production highlights the technical nature of welding practices and ensures that professionals in the field can apply the correct methods suited to specific applications.