DEVICE FOR THE ULTRASOUND TESTING OF HOT ROLLING MATERIAL

The invention relates to a device for the ultrasonic testing of hot rolled material during the welding operation in one of a number of rolling stands of a rolling train that are arranged one behind the other, comprising at least two rollers, leaving a rolling gap between them, the rollers being assigned ultrasonic testing heads which are arranged in such a way that parts of the roller body itself serve as a path along which the ultrasound waves pass to the rolled material to be tested that is in the rolling gap, which device is characterized in that the rollers provided with the ultrasonic testing heads are adjustable, have a straight transverse profile and a diameter which is a multiple of the rolling gap width, so that there is a great rolling angle (.alpha.), and these rollers are arranged in one of the first rolling stands of the rolling train.