Method for determining the position of an electrochemically drilled passage hole.

摘要

The method involves adding magnetic or magnetizable particles to electrolytes that are used during drilling. Magnetic fields produced with the particles are detected by a superconducting quantum interference detector (9). The position of an electrochemically drilled channel (3) and the thickness between the channel and the surface of a workpiece are determined from the detected magnetic field by SQUID microscope (10). An independent claim is also included for a method for monitoring an electrochemical drilling process.