1. The undeveloped opportunities of
Electrochemical Jet machining
Hans-Henk Wolters
CEO ECM Technologies

2. EDM
CE
ECG ECP
ECD ECM
Jet- Electrochemistry
ECD pECM ECM
ECP
ECM=AM=ECP
EPP

3. + -
Flow of
electrons
Flow of
electrons
Anode Cathode
Men+ Me
Dissolution of Deposition of
metal from Men+ Me metal on
anode Metal salt solution cathode

5. ECM ANIMATION

6. Nickel SS
alloys
Molybdenum AlNiCo
Tungsten
Hard Sintered
metal metals
Tungsten
carbides Steel
Cobalt grades
Titanium
alloys
Cupper And
Aluminum other
(alloys)
(alloys) metals/
alloys

7. Are you dealing with
Products with
complex and
precise
geometries
Tough or
impossible to Higher
machine alloys by production
conventional numbers
machining
Your product and your company might benefit from
pECM

8. Introduction of ECM Technologies
•Phase1:
Fundamental research on the specific material.

9. Material characteristics
•Electrical parameters
•Current (density)
•DC, pulsed, bipolar
•Pulse length
•Pause length
•P/P ratio
•Electrolyte parameters
•Temperature
•pH
•Conductivity
•Salt type (single/ mixtures)
•Passivating/ non-passivating
•Measurements
•Efficiency
•Surface quality
•Surface roughness
•SEM analysis

11. Anode reaction : Me → Men+ + ne-

12. Anode reaction : 6H2O → O2↑ + 4H3O+ + 4e-

13. Step 1: high speed machining, v ≈ 2,5 mm/min at 150A/cm2 DC

14. Step 2: accurate machining

15. Machining strategy
in passivating
elecrolyte
High current
Optimal current density,
density,
accurate machining
high MRR

16. Step 3: polishing

17. Introduction of ECM Technologies
•Phase1:
Fundamental research on the specific material.
•Phase 2:
Application research

19. Introduction of ECM Technologies
•Phase1:
Fundamental research on the specific material.
•Phase 2:
Application research
•Phase 3:
Small series production to optimize the process and to
analyze the parts.
• Phase 4:
Implementation of the application at customers location.

20. •Offshore industry •Watch industry
•Aerospace
•Consumer products
•Automotive •Steel industry •Membrane technology
Customers
Representatives
•Space •Medical •Energy market e.g. fuel cells and solar
•Hygiene market

21. THANK YOU FOR YOUR ATTENTION!
For more information please visit
www.electrochemicalmachining.com