Advantages and disadvantages of electrolytic deburring machine tools

Advantages and disadvantages of electrolytic deburring machine tools

Electrolytic deburring machine tool uses electrolysis to remove burrs on metal parts, an electrolytic machining method, referred to as ECM in English. Fix the tool cathode (usually made of brass) near the burr part of the workpiece, with a certain gap between the two (usually 0.3 to 1 mm). The conductive part of the cathode of the tool is aligned with the edge of the burr, and the other surface is covered with an insulating layer, so that the electrolysis is concentrated on the burr.

The electrolyte is corrosive to a certain extent, and the workpiece should be cleaned and anti-rust treated after deburring. Electrolytic deburring is suitable for removing burrs from cross holes in hidden parts or parts with complex shapes. The production efficiency is high, and the deburring time generally only takes a few seconds to tens of seconds. This method is often used for deburring gears, splines, connecting rods, valve bodies and crankshaft oil passages, as well as rounding sharp corners. The disadvantage is that the vicinity of the part burr is also subjected to electrolysis, the surface will lose its original luster, and even the edge of the deburring will be discolored and black.

During processing, the tool cathode is connected to the negative electrode of the electrolysis power supply, and the workpiece is connected to the positive electrode of the electrolysis power supply. A low-pressure electrolyte with a pressure of 0.1-0.3 MPa (usually sodium nitrate or sodium chlorate aqueous solution) flows between the workpiece and the cathode. When the electrolysis power supply is switched on, the burrs will be dissolved and removed by the anode, and will be taken away by the electrolyte.