New Challenges Facing EDM Processing Technology

High-speed milling technology has developed, and the development of EDM as another important method of cavity mold processing is also quite perfect, but as a processing system, it does face new challenges in high-speed milling. Due to the advancement of micro-finishing pulse power supply, working fluid, mixed silicon powder processing technology and other related technologies, the surface roughness of EDM processing can reach Rmax 0.6 ~ 0.8mm, and large area processing can be performed. And due to the continuous reduction of electrode loss (minimum of 0.1%) and precise control of the machining allowance for micromachining, it can be said that EDM has entered the field of precision machining. (Guide: Two ways to operate the rotary axis of a vertical five-axis machining center)

Since high-speed milling can process materials with a hardness of 36～52HRC or even 60HRC, almost all cavity mold materials can be processed, changing the situation that high-hardness materials only use electric machining. The machining efficiency of high-speed milling is 4:1 compared with the efficiency of EDM, and some are even 7-8 times that of EDM, and the manufacturing of electrodes is saved. High-speed milling also has certain machining accuracy and better surface roughness. Foreign countries believe that in the field of cavity mold processing, high-speed milling can replace EDM, which is not unfounded.

Because of this, in the application field, especially in the automobile and other industries, EDM machining is in danger of being squeezed out by high-speed milling. However, EDM has its irreplaceable advantages in processing deep grooves, narrow slits, ribs, and textures. But in general, Huaxia Die.com said that the application field of EDM has shrunk, and part of the market has been occupied by other processing equipment, especially the development of large EDM machine tools will have a greater impact.

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