Preparation method of improved sintered neodymium-iron-boron (Nd-Fe-B) casting strip

A preparation method of improved sintered neodymium-iron-boron (Nd-Fe-B) casting strips includes the following steps: firstly nucleation assisted alloy particles used for sintered Nd-Fe-B casting strips are prepared, all elements are weighted as follows: 26.68-28% of Pr-Nd, 70-72.5% of Fe and 0.90-1...

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Bibliographische Detailangaben
Hauptverfasser:	Liu, Jixiang, Xia, Feng, Sun, Caina, Gao, Jiao, Feng, Yonghuai, Li, Yanli, Wang, Yu
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES MAGNETS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	A preparation method of improved sintered neodymium-iron-boron (Nd-Fe-B) casting strips includes the following steps: firstly nucleation assisted alloy particles used for sintered Nd-Fe-B casting strips are prepared, all elements are weighted as follows: 26.68-28% of Pr-Nd, 70-72.5% of Fe and 0.90-1% of B, and a Pr element in two elements of Pr-Nd accounts for 0-30 wt %; the compounded materials are smelted and poured to obtain alloy strips, then the alloy strips are crushed into particles with diameter of 1-10 mm; secondly, Nd-Fe-B casting strips are prepared: the prepared intermediate materials are smelted and melted into molten steel, and then are refined; after the intermediate materials are fully melted, the nucleation assisted alloy particles are added; and after the nucleation assisted alloy particles are added, smelting is performed for 3-15 minutes pouring is performed, and final Nd-Fe-B alloy casting strips are obtained.