CNC machining parts include: CNC milling machine machining parts and CNC lathe machining parts, which often use: electrochemical polishing (also known as electrolytic polishing)
Electrolytic polishing is abbreviated as ECP in English. This machining method was invented by P.A. Jacques of France in 1931. Soon after, it was widely used in the surface treatment of CNC machining parts such as automobile parts; motorcycle parts; robot parts; automation equipment parts; drone parts; medical CNC machining parts, etc.
Principle:
The principle of electrolytic polishing is mainly:
The metal ions detached from the metal parts form a layer of phosphate film with the phosphoric acid in the polishing liquid adsorbed on the surface of the metal parts. This mucous film is thinner at the protrusions and thicker at the concave parts. Because the current density at the protrusions is high, it dissolves quickly. As the mucous film flows, the concave and convex changes continuously, and the rough surface is gradually leveled.
The metal part is connected to the positive pole of the DC power supply as an anode. Conductive materials corroded by electrolytes are used as cathodes
An electrolytic processing method that uses the principle that the microscopic convex points on the metal surface first undergo anodic dissolution in a specific electrolyte and at an appropriate current density to perform polishing.
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