AUXILIARY ALLOY CASTING PIECE, HIGH-REMANENCE AND HIGH-COERCIVE FORCE NDFEB PERMANENT MAGNET, AND PREPARATION METHODS THEREOF

Provided are an auxiliary alloy casting piece, a high-remanence and high-coercive force NdFeB permanent magnet, and preparation methods thereof, belonging to the technical field of permanent magnets. The method for preparing the auxiliary alloy casting piece includes the following steps: providing a...

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Hauptverfasser: CHEN, Chen, XIA, Feng, WANG, Zichao, FU, Yulong, ZHENG, Hailong, LIU, Yonghong, SUN, Caina, WANG, Yu
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Provided are an auxiliary alloy casting piece, a high-remanence and high-coercive force NdFeB permanent magnet, and preparation methods thereof, belonging to the technical field of permanent magnets. The method for preparing the auxiliary alloy casting piece includes the following steps: providing an auxiliary alloy material including, by mass percentage, 40% to 45% of Pr, 1% to 2% of Co, 0.5% to 1% of Ga, 0.6% to 0.8% of B, 0.1% to 0.2% of V, 0.3% to 0.7% of Ti, and a balance of Fe; smelting the auxiliary alloy material to obtain a smelted material; and subjecting the smelted material to a quick-setting casting to obtain the auxiliary alloy casting piece; where the quick-setting casting includes a refining and a casting in sequence.