hõõrdkeevitus hooratta kineetilise energia kasutamisega (vt hõõrdkeevitus; vrd otsehõõrdkeevitus), friction welding technique in which the rotating part is connected to a flywheel, which is brought up to a predetermined speed; then the flywheel is disengaged from the drive motor, and the parts are forced together ((see: friction welding; compare: continuous-drive friction welding)