Patent ID: 7501831
Filing Date: 2009-03-10
Classification: B23D,B28D

Abstract:
1. Process for detection of a malfunction, in particular the breakage of a wire in a wire sawing device of the type comprising at least one cutting region ( 1 ), in which a wire is wound about at least two wire guides ( 6 ) so as to form at least one layer of wires ( 4 ) movable with continuous or alternating movement and which comprises a support ( 3 ) arranged to receive an ingot of material ( 2 ), the layer of wires ( 4 ) or the support ( 3 ) being adapted to be moved so as to bring the ingot against the layer of wires ( 4 ) with the movement to be sawed, characterized in that a high frequency alternating signal is applied to the layer of wires ( 4 ) and that variations of the electrical signal in a measuring circuit are measured, the detected variations being then compared with a predetermined threshold.