Cold welding or contact welding is a solid-state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. Unlike in fusion welding, no liquid or molten phase is present in the joint.

What is cold welded?

Cold welding, or contact welding, is a solid-state welding process that requires little or no heat or fusion to join two or more metals together. Instead, the energy used for creating a weld comes in the form of pressure.

What is cold welding used for?

Typically, cold welding is used to create butt or lap joints. Industries include aerospace, automotive, advanced fabrication applications, and laboratory experiments often use cold welding. It is also often used for joining wires together.