Impulse ECM

Impulse ECM is a high-precision form of PECM that uses very short electrical pulses to achieve a high level of accuracy and an excellent surface finish. It is used for micro-machining and for creating intricate features on hard materials.

Materials Machined

• Hardened tool steels
• Titanium
• Nickel-based superalloys (Inconel, Hastelloy)

Market Sectors

• Medical: Miniature surgical tools and stents.
• Aerospace: Micro-holes for cooling or fuel injection.
• Formula 1: High-precision engine components and gears.
• Defence: Precision components for ballistics and weaponry.
• Luxury Goods: Watch components and intricate jewellery parts.

Key Benefits & Numbers

• Unmatched Precision: Achieves a dimensional accuracy of ±5 µm or better, making it ideal for micro-machining applications.
• Superior Surface Integrity: Creates a burr-free and micro-crack-free surface, which is essential for high-stress parts where even small defects could cause failure.
• High Production Speed: Drills micro-holes up to 10 times faster than conventional methods like EDM or laser drilling.

Relevant Industry Standards

• ASTM E1809: Standard Test Method for Determining the Quality of a Machined Surface on Metallic Materials.
• MIL-STD-1207: A military standard for the dimensional control of machined parts.
• SAE ARP4461: Guidelines for electrochemical machining, including best practices for surface integrity.

Academic References

• Advancement in electrochemical micro-machining
• Micro and Nano Machining by Electro-Physical and Chemical Processes