Preparation method of high-performance magnetic ring

A preparation method of a high-performance magnetic ring provided by the invention comprises the following steps of: (1) preparing raw materials according to alloy components of the magnetic ring, smelting the prepared raw materials, carrying out casting and melt-spinning on the raw materials to obtain a quick-setting sheet with the average thickness of 0.2-0.4 mm; (2) carrying out high-temperature heat treatment on the quick-setting sheet; (3) carrying out hydrogen decrepitation on the quick-setting sheet subjected to high-temperature heat treatment to obtain coarse crushing powder, carryingout dehydrogenation heat treatment to enable the hydrogen content of the coarse crushing powder to be less than or equal to 600 ppm, and then feeding the coarse crushing powder into a jet mill for milling to obtain jet mill magnetic powder; (4) adding a lubricating agent into the jet mill magnetic powder, stirring the mixture for 2-6 hours, feeding the mixture into a magnetic ring magnetic field pressing machine for orien