Production method for a perforated disk in a fuel injection valve on an internal combustion engine processes a flat metal sheet with a spray hole by electrochemical machining

摘要

A flat metal sheet has a continuous thickness reduced in an area (33) of the sheet by electrochemical machining. A spray hole (34) is created in this area of thickness already reduced or to be reduced. The metal sheet is processed until it reaches a perforated disk (20) with preset outer dimensions.