Abstract: An electrode for the electrochemical fine-boring of workpieces includes an electrode tube for an electrolyte to pass through to reach a workpiece which is to be machined, and an electrical conductor which is connected to the electrolyte, in which electrode the tube, for the purpose of boring bores with the smallest possible diameter, consists of a metal with a substantially amorphous structure, is electrically conductive and is provided on its outer surface, at least in sections, with a nonconductive insulating layer.

Abstract: The invention relates to an electrode for the electrochemical fine-boring of workpieces, comprising an (electrode) tube (6) for an electrolyte (4) to pass through to reach a workpiece (5) which is to be machined, and an electrical conductor which is connected to the electrolyte (4), in which electrode the tube (6), for the purpose of boring bores with the smallest possible diameter, consists of a metal with a substantially amorphous structure, is electrically conductive and is provided on its outer surface, at least in sections, with a nonconductive insulating layer (10) (FIG. 2).

Abstract: An apparatus for the electrolytic drilling of precision holes into a work piece surface which extends at an acute angle to the drilling direction, has one tubular electrode for each hole to be drilled. Each electrode directs an electrolyte stream in the desired direction. In order to assure a proper drilling and to protect the work piece outside the holes to be drilled, a covering body is located to cover the work piece surface through which the holes are to be drilled. The covering body has a surface which closely hugs or forms an interface with the work piece surface, and another surface which extends perpendicularly to the drilling direction so that the drilling begins through the covering body which then forms a guide for the electrode and for the return flow.