Linear friction welding

Linear friction welding

In engine construction, linear friction welding has gained enormously in importance in the last few years, the main reason being that it is one of the basic methods used to manufacture blisks (bladed disk).

Operating principle of linear friction welding

In the linear friction welding process, one of the parts to be joined is firmly clamped in place while the other oscillates in a linear motion. When the parts are pressed together, frictional heat is produced and the material in the weld zone is heated to forging temperature. Simultaneously, the parts are upset, which causes a weld bead to form in the region of the joint. This bead is subsequently removed by adaptive milling.