Eroding steel(Ⅱ)
In the case of complicated geometry the costs of machining the electrodes to shape may be several times more than the costs of the electorde material itself.Plansee ELRO become a more attractive proposition as the complexity and precision of the work-piece increase.
3.Thermal stability
Since,electrical discharges tend to be distributed non-homogeneously over the surface of an electrode,high thermal power densites result especially at corners and on ribs or fins.This can produce bucking of the electrode.Here tungsten copper is particularly superior to copper.
4.Demands made on rinsing conditions
Because fo the reduced wear,fewer particles of the electrode have to be washed out of the machining zone.In addition,because of the homogeneous structure,better current distribution is achieved(avoiding large discharge channels).In this way smaller particles are eroded from the workpiece.The risk of shot-circuits is thus reduced.
3.Thermal stability
Since,electrical discharges tend to be distributed non-homogeneously over the surface of an electrode,high thermal power densites result especially at corners and on ribs or fins.This can produce bucking of the electrode.Here tungsten copper is particularly superior to copper.
4.Demands made on rinsing conditions
Because fo the reduced wear,fewer particles of the electrode have to be washed out of the machining zone.In addition,because of the homogeneous structure,better current distribution is achieved(avoiding large discharge channels).In this way smaller particles are eroded from the workpiece.The risk of shot-circuits is thus reduced.
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