Correct option is D
Friction welding is
not a conventional welding process. It is classified as a
solid-state welding process, where the materials to be joined are rubbed together under high pressure to generate heat through friction, causing the materials to fuse without melting. Conventional welding processes, such as arc welding, gas welding, and resistance welding, involve melting the base metal and the use of a filler material to create a joint.
Friction Welding Process:
· A solid-state process where no melting occurs.
· Used in joining dissimilar metals and high-strength applications, such as aerospace and automotive components.
Key Advantages of Friction Welding:
· No filler material required.
· Produces high-strength, defect-free joints.
Conventional Welding Processes:
Arc Welding: Involves using an electric arc to melt the base metal and filler rod to form the joint.
Gas Welding: Uses an oxy-acetylene flame to heat and melt the metal for joining.
Resistance Welding: Heat is generated by electrical resistance at the joint interface to weld the pieces.
