Like AFM, the Extrude Hone ECM process is able to machine, deburr and polish surface locations previously unreachable by other methods, including manual or hand work. Because the ECM process removes metal without direct contact between the tool and the workpiece, it does not expose the workpiece to mechanical or thermal stress. As a result, the integrity of specific geometries, such as holes, edges and intersecting passages, are preserved. Moreover, the electrolytic process provides controlled material removal ranging from 0.0005” to 0.01” (0.01mm to 0.25 mm) on most applications.

For fuel gallery machining, our ECM process produces a fuel accumulation chamber in the main bore of injector nozzles, leaving a smooth wall chamber with radiused fuel hole intersections. Using ECM, diesel injector nozzles can be machined to create specific volume reservoirs.

For the diesel industry, the unique ability of Extrude Hone’s ECM technology to precisely machine features to interior passages makes it an invaluable process: