The process of electrical discharge machining ablation (EDM-A) machining is proposed

that is bubbled into oxygen to the processing area in a controlled manner and firstly activates the materials under the effect of EDM induced

then metal combustion reaction occurrs with the oxygen and materials are removed with the chemical energy of metal burning

thus the material removal rate is greatly improved and quality of machined surface can be guaranteed by controlling the oxygen and using the EDM trimming. This technology is suitable for “turning

milling

drilling

shaping

deep-hole machining” for it still belongs to the machining method of no macro cutting force and it overcomes the problem of difficulty in machining and the low efficiency of EDM for difficult-to-cut materials machining. The technology has changed the processing guidelines of difficult-to-cut materials. And almost all combustible conductive materials are able to be machined by EDM-A. The efficiency of EDM-A milling for Cr12 is ten times higher than the traditional EDM and the surface quality is equivalent. The efficiency of aerosol dielectric EDM-A for Cr12 blind hole machining is 5.45 times higher than the traditional EDM

maximum machining depth reaches 132mm and can continue processing.