Abstract: The present invention relates to a forge rolling device (1) for the bending forge rolling of a component (2), in particular of a component blank, having a first forging roll (10) with a first axis of rotation (R), and a second forging roll with a second axis of rotation, wherein each of the forging rolls (10) has, on its surface (11), a forge rolling contour (12) that runs at least partially around its axis of rotation (R), said forge rolling contours (12) corresponding to one another, in order to form a component (2) passed between the forging rolls (10) in a passage direction (D). This forming can be bending with or without cross-sectional change. In this case, the forge rolling contours (12) are configured so as to bend the component (2), passed between the forging rolls (10), in at least one direction transversely to the passage direction (D) of the component (2), at least by means of one subregion (13) of the forge rolling contours (12).

Abstract: The present invention relates to a forge rolling device (1) for the bending forge rolling of a component (2), in particular of a component blank, having a first forging roll (10) with a first axis of rotation (R), and a second forging roll with a second axis of rotation, wherein each of the forging rolls (10) has, on its surface (11), a forge rolling contour (12) that runs at least partially around its axis of rotation (R), said forge rolling contours (12) corresponding to one another, in order to form a component (2) passed between the forging rolls (10) in a passage direction (D). This forming can be bending with or without cross-sectional change. In this case, the forge rolling contours (12) are configured so as to bend the component (2), passed between the forging rolls (10), in at least one direction transversely to the passage direction (D) of the component (2), at least by means of one subregion (13) of the forge rolling contours (12).

Abstract: The invention relates to a method for investigating a structure and a structure for receiving and/or conducting a liquid or soft medium, the method comprising the steps of: a) exciting acoustic waves in the structure by means of at least one transmitter, b) converting at least a part of the energy associated with the acoustic waves (A) excited in the structure into volume sound waves of the medium, c) reconverting at least a part of the energy associated with the volume sound waves into acoustic wave energy of the structure thereby generating acoustic waves in the structure, d) receiving acoustic waves evoked by the transmitter by at least one receiver, and e) verifying whether a coating is present on a surface of the structure and/or if a coating is present determining properties of the coating by evaluating a signal generated by the receiver upon receipt of acoustic waves evoked by the transmitter and/or verifying whether a level of the medium (5) is below a predetermined value.