Abstract
Magnetic field assistance electrochemical micro-machining strategy was used to produce 304 stainless steel with a high-precision surface. The surface roughness was measured and the micro-morphology was observed. The results showed that the optimal surface morphology with a roughness of about 0.30 μm was obtained after magnetic field assistance electrochemical micro-machining for 10 min. The magnetic field assistance electrochemical micro-machining produced a lower surface roughness than that of electrochemical micro-machining at the same processing time, indicating that magnetic field assistance was beneficial to improving the machining efficiency. The surface microstructures proved that the magnetic field assistance electrochemical micro-machining provided a relatively flat and smooth surface. The stray corrosion was significantly reduced. The generation of the electromagnetic force regulated the charge transfer in processing and affected the behavior of the anode dissolution reactions. The physical models describing the mechanism of stray corrosion suppression were established.
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