INSTRUMENT FOR MEASURING BULGING OF STEEL INGOT

摘要

PURPOSE:To provide a titled instrument which can measure bulging of a high- temp. ingot with high accuracy and has excellent durability by constituting the instrument in such a manner that the displacement of rolls disposed to face each other in the moving direction of the ingot and the displacement of the ingot between the rolls are detected. CONSTITUTION:A sensor attaching arm 25 is fixed to a supporting arm 24 installed to a fixing base 23 and a sensor supporting member 30 mounted with differential transformers 31 and an ultrasonic range finder 32 and a heat shielding plate 37 are longitudinally movably attached to the arm 25 in an instrument 22 for measuring the bulging of the steel ingot 20 moving in an arrow 19 direction. A pair of said differential transformers 31 contact with the extreme top of a pair of the rolls 21 spaced from each other in the moving direction 19 of the ingot 20 via displacing iron cores 40 and small rollers 41 and detect the displacement of the rolls 21. On the other hand, the range finder 32 detects the displacement of the ingot 20 in the central position of the rolls 21, 21. The bulging of the ingot 20 is exactly detected by both detected values.