Specifics of Flushing in Electrical Discharge Drilling
Specifics of Flushing in Electrical Discharge Drilling
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DOI：
10.1016/j.procir.2013.03.024
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Munz;M. Risto-;R. Haas
中科院分区：
文献类型：
--
作者：
M. Munz;M. Risto-;R. Haas
电火花加工中的冲洗是获得高质量结果和良好生产率的必要条件。由于冲洗压力高，放电钻孔中的冲洗条件与下沉和切割操作相比是独特的。高冲洗压力导致工具电极和工件之间的窄间隙中的高介电流率。已经发现，过多的冲洗会导致负面的过程行为并降低钻井速度。然而，基于供应到差距的电能，存在最佳介电流率以实现高钻孔速度。此外，它被发现，有一个直接的联系之间的去除机制和介电流率。通过多脉冲实验，研究了冲洗对钻速的影响、冲洗机理和工艺行为。
Flushing in electrical discharge machining is essential to obtain high quality results and a good productivity. The flushing conditions in electrical discharge drilling are unique compared to sinking and cutting operations due to high flushing pressures. High flushing pressures lead to high dielectric flow rates in the narrow gap between the tool electrode and the work piece. It was found out, that to much flushing results in negative process behaviour and reduces the drilling speed. However, based on the electrical energy supplied to the gap there is an optimal dielectric flow rate to achieve a high drilling speed. Furthermore it was found out that there is a direct link between removal mechanism and the dielectric flow rate. Multi pulse experiments were carried out to investigate the influence of flushing on drilling speed, removal mechanism and process behaviour.