Ultrasonic measurement method for hollow valve wall thickness

摘要

The present invention relates to a method for measuring the wall thickness (b) of a hollow valve (1) having a hollow valve head (6). In this method, the wall thickness (bs) in the region of the valve stem (2) is measured using at least one ultrasonic sensor (3), where the ultrasonic sensor (3) The surface is directed in such a way that radiating ultrasonic waves are introduced perpendicular to the surface and / or the wall thickness (b2) in the region of the bevel (9) is at least one ultrasonic sensor (3 ) Where the ultrasonic sensor (3) is placed at the location of the bevel (9) where the inner tangent (10) of the cavity (5 ′) The ultrasonic sensor (3) extends parallel to the outer tangent (11) and is directed relative to the tangent (10, 11) in such a way that radiating ultrasonic waves are introduced perpendicular to the surface. [Selection] Figure 2