Mitsubishi Electric EA28V-ADV

The Mitsubishi Electric EA28V-ADV is a high-current CNC sinker EDM machine from Mitsubishi Electric's EA-ADV (Advanced) series, engineered for large electrode and deep-cavity erosion applications in die casting, forging die, and large mold manufacturing. With a generator rated to 128 A peak output and X/Y/Z travels of 600 mm × 400 mm × 400 mm, the EA28V-ADV addresses the upper end of the industrial sinker EDM market where material removal rate and workpiece size capacity are primary selection criteria alongside surface finish performance.

Mitsubishi Electric's MGF (Miracle Generation Function) generator technology, carried on the EA28V-ADV, combines advanced transistor pulse control with fuzzy logic-based gap condition assessment to sustain stable erosion at high current levels. MGF continuously evaluates discharge gap conditions and applies corrective adjustments at microsecond intervals, maintaining productive spark conditions even in poorly flushed deep cavities where unstable discharge and short-circuit conditions are most likely to develop. The result is significantly higher effective material removal rates compared to machines with simpler generator architectures, and reduced arcing damage on workpiece surfaces during high-current roughing passes.

The EA28V-ADV incorporates Mitsubishi Electric's SGF (Super Growth Function) adaptive control, which monitors electrode wear in real time and adjusts the Z-axis feed rate to compensate for wear progression without operator intervention. This capability is particularly valuable in high-current roughing where electrode wear rates are highest and manual compensation requires frequent operator attention or conservative cycle programming that sacrifices productivity. SGF enables more aggressive cycle programming with confidence that dimensional accuracy will be maintained throughout the burn.

Surface finish performance spans from aggressive roughing to fine finishing within the same machine. The EA28V-ADV achieves Ra values below 0.2 µm in fine-finish mode through Mitsubishi Electric's SG (Super Generation) finishing technology, which applies extremely low energy pulses with precisely controlled duration to build up fine-finish surfaces without recast layer accumulation. This dual capability — high-current roughing through precision fine finishing — makes the EA28V-ADV suitable for complete die-to-finish sinker EDM operations on large cavity work without requiring a secondary finishing machine.

The Mitsubishi Electric M800 EDM CNC control provides comprehensive process management with graphical orbit programming, automatic technology selection from the company's extensive material database, and remote monitoring capability. Network integration and teleservice support leverage Mitsubishi Electric's global service infrastructure, which is among the most extensive in the sinker EDM industry, with direct service presence in North America, Europe, and Asia.