Pressing first component into second component comprises frictionally pressing first and second components to each other in longitudinal direction, and subjecting first component to ultrasonic vibration during pressing using press die

摘要

The method comprises frictionally pressing first and second components to each other, and subjecting the first component to ultrasonic vibration during the pressing process. The pressing and subjecting steps are performed using a press die. The pressing step is carried out in a longitudinal direction, and the vibration is generated in the direction. The pressing step is controlled base on a joining force. An independent claim is included for a valve.