The test sample for this test is a milling cutter provided by the customer, model VMS M-100D220-Z4C100GC02V1-VTX, with a total of 3 pieces. The core requirement is to passivate the milling cutter, and the passivation value must meet the standard of 7 μ m. To accurately meet the requirements, our company uses PL-24AX passivation equipment and 15000-L type abrasive for processing. Through precise control of passivation speed, pressure and other parameters by the equipment, combined with the fine grinding effect of the abrasive, the passivation values of the three milling cutters have consistently reached the preset requirement of 7 μ m, while eliminating the original saw teeth and burrs on the cutting edge. After subsequent verification, the passivated milling cutter not only significantly improves the surface quality of the processed product during cutting, but also optimizes the chip discharge effect, effectively reducing the problems of chip accumulation and scratching the workpiece. The specific test results are detailed in this report.