WHAT IS PULSED ELECTROCHEMICAL MACHINING (PECM)?
Pulsed electrochemical machining, also known as precision electrochemical machining (PECM) is a non-contact, non-thermal advanced material removal process capable of small features, super-finished surfaces, and high repeatability for metallic parts.
Voxel's electrochemical machining is based on the principles of electrolysis. The machining operation involves a tool (the cathode) in the inverse shape of the desired workpiece (the anode).
As the tool moves towards the workpiece surface, it machines the workpiece into the complementary shape of the tool. This occurs as a pulsed DC current is applied, allowing for high precision and superior surface quality. At the same time, an electrolyte is pumped between the cathode and anode at high speed, removing dissolved metal and heat.
The result is an operation capable of producing a burr-free 3D shape with no tool wear in alloys that are difficult or impossible to machine through traditional methods. As PECM can produce parts in parallel with excellent repeatability, it is well-suited to high-volume and/or high-value production.
Cathode and anode are
set up and electrolyte is pumped between the
As the two pieces move together a pulsed DC current is applied to the anode and cathode.
The flowing electrolyte removes heat and waste products from the gap.
The workpiece is machined into the complimentary shape of the cathode tool.
Part is complete with no need for any secondary processing, burr removal,
MATERIALS & PECM
A2 Tool Steel
M4 Tool Steel
Ti Grade 2
Creating precision parts from advanced metal alloys is a growing challenge facing our customers.
PECM is the next generation of electrochemical machining, permitting novel designs, producing higher quality parts, and can machine hard or temperature resistant alloys at higher speeds than competing technologies.
PECM is capable of machining any conductive metal or alloy and is particularly well suited for those materials that are difficult to machine through conventional methods, such as superalloys. Commonly machined materials include nickel, iron, and titanium-based alloys in a variety of formats such as cast (including single crystal), forged, additively manufactured, and powdered metallurgy.
PECM is best suited for high-value metal components in highly stressed environments such as orthopedic implants, surgical tools, turbine engines, turbochargers, rocket motors, heat exchangers, sensors, and certain energy applications.