Dysprosium-iron-praseodymium-neodymium magnetic steel with high performance

Abstract

The invention discloses dysprosium-iron-praseodymium-neodymium magnetic steel with high performance. The dysprosium-iron-praseodymium-neodymium magnetic steel comprises the following components in percent by weight: more than or equal to 0.022% and less than or equal to 0.036% of C, less than or equal to 0.45% of Mn, more than or equal to 1.00% and less than or equal to 2.00% of Dy, more than or equal to 12.50% and less than or equal to 13.50% of Ni, more than or equal to 2.50% and less than or equal to 3.00% of Mo, more than or equal to 21.00% and less than or equal to 22.50% of Cr, more than or equal to 1.90% and less than or equal to 6.00% of Si, more than or equal to 0.30% and less than or equal to 0.50% of Al, more than or equal to 0.10% and less than or equal to 0.15% of Cu, less than or equal to 0.015% of P, less than or equal to 0.010% of S, more than or equal to 0.40% and less than or equal to 0.70% of Nb, less than or equal to 0.1% of Ga, 28-29% of praseodymium-neodymium alloy 1#, 10-20% of dysprosium-iron alloy 2# and the balance of Fe and other inevitable trace impurities. The dysprosium-iron-praseodymium-neodymium magnetic steel disclosed by the invention has the advantages that the praseodymium-neodymium alloy 1# and the dysprosium-iron alloy 2# are adopted for adjusting and controlling the content of dysprosium, praseodymium and neodymium in the magnetic steel, so that the quality and the quality stability of a magnetic-steel product are improved.

Description

[0001] technical field [0002] The invention relates to a rare earth permanent magnet, in particular to a high-performance dysprosium iron praseodymium neodymium magnet. Background technique [0003] Electromagnetic steel sheets are materials widely used as iron cores of various transformers and motors. In particular, in an electrical steel sheet called a grain-oriented electrical steel sheet, the direction in which the orientation of crystal grains or unit cells gathers is called a Goss orientation. [0004] In order to manufacture such a grain-oriented electrical steel sheet, the following technique is generally used: using precipitates (precipitates) called inhibitors to double the crystal grains having the Goss orientation in final annealing (finalannealing). secondary recrystallization. NdFeB permanent magnet material is a permanent magnet material based on the intermetallic compound RE2FE14B. The main components are rare earth (Re), iron (Fe), boron (B). Among...

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Problems solved by technology

At the same time, in the production process, due to the influence of factors such as weighing equipment, raw material purity, and operating errors, it is difficult to control the accuracy of the addition of related rare earth elements in production, so it is difficult not only to control the production cost of the magnetic steel, but also to ensure the stability of product quality. sex

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