The polarity change in the electrical discharge machining is still a problem and is often performed completely unmotivated or randomly. The polarity must be designated primarily, i.e. the anodic part must be clearly assigned to the tool or the workpiece. Normally, the polarity of the workpiece electrode is named. In paper, will be shown which determine fundamental causes the structural behavior of the cathode and anode, and when it makes sense to change the polarity. The polarity change is primarily dependent on the materials that are used as cathode and anode. This distinction must be made if there are pure metals or complex materials. Secondary of the polarity change is also affected by the process energy source (PES) and the supply line. The polarity change is mostly influenced by the fact that the removal is to be maximized on the workpiece while the tool is minimal removal (wear) occur. A second factor that makes a polarity change needed is the use of electrical discharge in combination with other machining methods, such as electrochemical machining (ECM).
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16 October 2017
PROCEEDINGS OF THE 20TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2017
26–28 April 2017
Dublin, Ireland
Research Article|
October 16 2017
Importance of polarity change in the electrical discharge machining Available to Purchase
H.-P. Schulze
H.-P. Schulze
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H.-P. Schulze
AIP Conf. Proc. 1896, 050001 (2017)
Citation
H.-P. Schulze; Importance of polarity change in the electrical discharge machining. AIP Conf. Proc. 16 October 2017; 1896 (1): 050001. https://doi.org/10.1063/1.5008046
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