15/04/2026
Most machining problems don’t start with bad design.
They start on the shop floor.
Tool wear, burr formation, surface damage, or unstable results across batches can quickly turn a well-designed component into a production challenge. And beyond technical feasibility, manufacturers are increasingly focused on cost reduction, scrap rate, downtime, and tool cost.
PECM (Precise ElectroChemical Machining) approaches machining differently.
Instead of cutting material mechanically, the material is dissolved anodically in an electrolyte. The cathode shapes the workpiece without mechanical contact, while the dissolved material is continuously flushed out of the machining gap by the electrolyte.
This enables highly stable machining conditions and opens solutions for problems that are difficult to solve with conventional processes.
Here are 10 typical manufacturing challenges PECM can address:
1. Burr formation
Mechanical cutting processes often generate burrs that require additional deburring steps. PECM produces burr-free edges directly in the machining process.
2. Extremely small edge radii
PECM enables burr-free edges with typical edge radii down to about 10 µm. For special applications, cutting edges below 1 µm can be achieved.
3. Mirror-like surface quality
Surface finishes down to Ra 0.015 µm can be achieved directly in the process, often eliminating extensive polishing steps.
4. Tool wear in hard materials
Nickel-based alloys, titanium or hardened steels cause significant tool wear in conventional machining. PECM operates without mechanical tool wear.
5. Heat-affected zones
Mechanical machining generates heat that can alter the material structure. PECM is a cold process without thermal damage.
6. Recast layers and microcracks
Processes like EDM can create recast layers or microcracks. PECM produces stress-free surfaces without such layers.
7. Complex geometries
Fine features, microstructures and intricate geometries can often be machined in a single process step.
8.Process chains with multiple finishing steps
Roughing, finishing and polishing can often be combined in PECM, reducing the number of downstream operations.
Typical feed rates illustrate the process stages:
Roughing: up to 5.0 mm/min
Finishing: 0.1 – 0.5 mm/min
Polishing:
