Applications of Silver Tungsten Alloy - Electrode Material

Electrode material must be good conductivity and has stable discharge characteristics. Copper electrode good processability, especially processing stability, less prone to arc discharge or the arc discharge transition, in most operations can stabilize the discharge, are widely used.

Graphite electrode machining stability is better, the most prominent feature is a large rough currents can remain stable discharge, and to ensure low loss electrodes, but in finishing, easy to discharge instability occurs, easy to pull arc burns. Silver-copper-tungsten alloys and tungsten electrode material is rarely used, because the price of expensive materials. They are still very stable micro-discharge machining parts, deep grooves and other difficult parts, electrode wear is extremely small, are considered for use in precision machining. Electrode material selection to ensure the quality of the discharge must be stable during processing. Copper copper must be free of impurities, the best hammered.

There are several graphite electrode material classification, such as Amy level, ultrafine grade, ultra-fine grade, fine grade, etc., according to the processing accuracy, efficiency requirements choice. Quality graphite material should be homogeneous, good strength, not easy to produce in the processing of flake. Using different electrode materials for processing should be flexible to deal with electrical pairing parameters in order to achieve stable discharge machining, machining works well, played the purpose of the selected material value.

Now many EDM electrical parameters can be automatically matched according to different combinations of materials processing. Mainly dealing with the electrical parameter pairing current, pulse width, pulse size of the gap. Performance electrode materials according to the appropriate choice of the electrical parameters of materials processing advantages to play, handle the processing of defects.




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