Approximately phase doing, approximately the rolling line null phase which possesses the multiple rolling

摘要

As for this invention, approximately phase making the rolling line, in the rolling process in one among the plural rolling stands which are arranged, being the device in order the ultra wave to inspect the hot rolling material, at least being consisted of two rolls, one rorugiyapu to be formed between these rolls, by the aforementioned roll the ultrasonic inspection head corresponding and being arranged, as for these ultrasonic inspection heads, in order to be used, as transmission division because of the ultra wave it reaches to the rolling item which it tries that the part of the roll body, will inspect inside the roll gap, it regards those of the type which is arranged. In this case, the ultrasonic inspection head (9,10) the roll which it has (3), is the adjustment possible, the true tsu immediately it has possessed cross section form, a larger rolling angle ( ) is provided by having possessed the diameter where roll gap width (2) measures several times, the aforementioned roll (3), is arranged in one among the 1st rolling stands of the rolling line.