The invention provides a preparation method for a
composite coating of a cutter. The preparation method for the
composite coating of the cutter specifically comprises the steps that (A) the cleaned cutter is clamped on a workpiece rack of a high-power pulsed magnetron
sputtering instrument, after vacuumizing, an electric heater is started, and then the electric heater is adjusted; (B)
inertia gas is fed into a cavity of the high-power pulsed magnetron
sputtering instrument, a bias power supply is started, and then glow cleaning is conducted on the cutter; (C) after glow cleaning is ended, the vacuum degree of the cavity of the high-power pulsed magnetron
sputtering instrument is adjusted, and a
titanium target is started for depositing a Ti layer; and (D) after bombarding is completed, a
nitrogen flowmeter valve is opened, a
TiN layer and a TiSiN layer are deposited, and the
coating of the cutter is obtained after cooling. According to the preparation method for the
composite coating of the cutter, the TiSiN nanometer composite
coating is prepared through a high-power pulsed magnetron sputtering technology, and the preparation technology of the TiSiN-based
coating of the cutter is stable, reliable and high in
repeatability and has important application value for high-speed
machining of materials difficult to
machine, the improvement of the performance of various mechanical part products and the development of the equipment manufacturing industry.