HEIDENHAIN TNC 406 - Manual (Page 81)

60 4 Programming: Fundamentals, Files, Program Entry, Spark Erosion, Erosion Tables
4.5 F
u
ndamentals of Spar
k Er
osion
When the voltage is removed, the discharge channel collapses
(implodes).
When the discharge channel collapses, the implosion thrusts the
molten metal into the dielectric fluid.
A small crater remains on the electrode and the workpiece. The debris
of melted electrode or workpiece material remains suspended in the
dielectric fluid.
+
–
+
–
+
–