A kind of high tenacity rare earth flexible magnetic strip and its production method
A technology of flexible magnetic strips and production methods, which is applied in the manufacture of magnetic objects, magnetic materials, inductors/transformers/magnets, etc., can solve the problems of limited modification effect, poor toughness, complicated process, etc., and achieves low cost and good mechanical properties. , the effect of simple process
Active Publication Date: 2017-07-04
HEYE HEALTH TECH CO LTD
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Problems solved by technology
[0009] The technical problem solved by the present invention is: the toughness of the rare earth permanent magnet material in the prior art is poor, the modification effect in the toughening modification process is limited and the process is complicated
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[0029] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.
[0030] On the basis of actual production combined with a large amount of experimental research work, the inventor found that the toughness of the rare earth flexible magnetic strip has a close relationship with the composition of the material, the size of the particles and the additives added. One aspect to improve the toughness of rare earth flexible magnetic strips.
[0031] The present invention proposes a kind of production method of the rare earth flexible magnetic strip of high toughness, and the rare earth magnetic material of the present invention adopts NdFeB, and described method comprises the following steps:
[0032] Step 1, adding additional elements to NdFeB to form a NdFeB alloy;
[0033] Preferably, the additional element is Dy element or Tb element, and the content of Dy element o...
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Abstract
The invention discloses a high-toughness rare earth flexible magnetic strip and a production method thereof. The high-toughness rare earth flexible magnetic strip comprises the following components: 92wt%-97wt% of NdFeB (neodymium iron boron) alloy magnetic powder, 2-3wt% of binder, and 1-5% of processing additive, wherein the NdFeB alloy magnetic powder contains a Dy (dysprosium) element or a Tb (terbium) element, the binder contains F48 thermosetting novolac epoxy resin, the processing additive adopts a coupling agent, a coating agent, a lubricating agent, a curing agent and a plasticizing agent, the coupling agent contains titanate, and the coating agent contains aromatic dicarboxylic acid with concentration of 0.2wt%. The high-toughness rare earth flexible magnetic strip has the advantages that a production method has simple technology, and the cost is low; for the produced high-toughness rare earth flexible magnetic strip, the mechanical property is high, the toughness is higher, the easiness in cracking and corner explosion is avoided, the large-scale automatic production is realized, and the economic benefit is high.
Description
technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a high-toughness rare earth flexible magnetic strip and a production method thereof. Background technique [0002] Although rare earth flexible permanent magnet materials have been around for a short time and their output is less than that of sintered permanent magnet materials, due to their advantages that sintering, casting, thermal deformation and other manufacturing methods do not have, bonded permanent magnet materials have developed rapidly and are widely used in various fields. It has broad application prospects and is highly valued by the permanent magnet industry in various countries. [0003] Rare-earth flexible permanent magnet materials are important metal functional materials, which can be used to make various forms of functional devices by utilizing their energy conversion functions and various magnetic physical effects. The rare earth flexible magnetic ...
Claims
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IPC IPC(8): H01F41/02H01F1/057
Inventor 李俊胡立江方志财
Owner HEYE HEALTH TECH CO LTD