Hydroerosive machining

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Hydroerosive machining , also hydroerosive grinding (HE grinding), engl. Hydro Erosive Grinding (HEG) is an abrasive manufacturing process in which an abrasive liquid mixed with grinding particles is pumped through the workpiece under high pressure of up to 120 bar.


Hydro-erosion machining is preferably used for deburring . In the production of diesel engines in particular , hydroerosive grinding is used to round the injection bores on the inside of the nozzle bodies.


The following examples were produced on rounding machines from Sonplas.

Diesel nozzle holes

High pressure drilling

Throttle bore after rounding in a diesel manifold


  • Guillermo Muaricio Urzúa Torres: Numerical and experimental examinations of the hydro-erosive material removal on diesel direct injection nozzles. Magdeburg 2005 (Magdeburg, University, dissertation, 2005).
  • D. Potz, W. Christ, B. Dittus: Diesel Nozzle - The Determining Interface Between Injection System and Combustion Chamber. In: Thermo- and Fluid Dynamic Processes in Diesel Engines. Selected Papers from the Thiesel 2000 Conference Held in Valencia, Spain, September 13-15, 2000. Springer, Berlin et al. 2002, ISBN 3-540-42665-5 , pp. 133-144.
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Individual evidence

  1. What your heart desires ( Memento of the original from March 28, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , Technical article in the journal KEM from June 26, 2009 @1@ 2Template: Webachiv / IABot / www.kem.de
  2. Klaus Mollenhauer (Ed.): Manual Diesel Engines. 2nd, corrected and revised edition. Springer, Berlin et al. 2001, ISBN 3-540-41239-5 , p. 238 ..
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  3. the company's website Sonplas