What is electrochemical machining?

Electrochemical machining (ECM) is a metal machining process involving the removal of the material from the workpiece by electrochemical erosion. This process is achieved by handing a high -current electric charge from a positively charged workpiece via the electrolyte electrolyte of a negatively charged "cutting tool". This causes the molecules from the workpiece to be released into the electrolyte in a profile that mimics the shape of the cutting tool. In this way, a "cut" is produced in the same shape as a cutting tool. Although electrochemical machining is limited to use on electrically conductive materials, it offers several advantages, including cutting complex internal profiles and minimal voltage transfer to the workpiece. However, the ECM application is reversed; The material is removed from and is not stored on the workpiece. This is achieved by placing a specially shaped cathode in close proximity, but an unsuitable largeness. A pressure electrolyte solution is pumped between two and acts as a wire for a highA current charge that moves from the workpiece to the cathode.

This current flow causes the workpiece to disrupt the molecular level and create a cut that monitors the shape of the cathode. This means that the cathode effectively becomes a tool for cutting processes. The material that is released from the workpiece is kidnapped by electrolyte, thereby undergoing a cutting tool for very low wear when machining. The space between the working piece and the cutting tool during machining is kept to 0.003 and 0.03 inches (0.08 mm and 0.8mm).

This deficiency of physical contact between the cutting tool and the workpiece is one of the greatest advantages of the electrochemical machining method, as no stress or heat is transmitted to the workpiece during machining. It is also possible to drive very hard materials without related costs for expensive, very hard tools. Electrochemical machining is therefore a suitable way to produce very hard, accurate parts such asturbine blades. The procedure can also be processed by a wide range of complex profiles, internal and external, as well as. The only real disadvantages of the ECM technician are the high initial installation costs and the risk of corrosion for tools and workpieces that represent electrolyte solutions.