Magnetic material for horn and preparation method thereof
A technology of magnetic materials and speakers, which is applied in the manufacture of magnetic materials, magnetic objects, inductors/transformers/magnets, etc., can solve the problems of unstable electromagnetic performance, affect the sound quality of speakers, and easy to produce cracks, and achieves suppression of grain growth, The effect of reducing porosity and increasing magnetic permeability
Pending Publication Date: 2021-01-12
宁波合力磁材技术有限公司
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Problems solved by technology
[0004] In view of the above-mentioned related technologies, the inventor believes that there is a high content of iron boron in the magnetic material, and the physical properties of iron boron are brittle and hard, and cracks are prone to occur when long-term high temperature or external force is applied, resulting in unstable electromagnetic properties and affecting the speaker. Defects in sound quality
Method used
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Embodiment 1- Embodiment 6
[0042] The preparation method of embodiment 1-embodiment 6 is as follows:
[0043]Step 1. According to the parts by weight in Table 1, weigh zinc stearate and heat it to 120°C, add tetraphenyldipropylene glycol diphosphite and mix evenly, add stearic acid after cooling to 40°C, mix well, and obtain lubricating agent for later use, then weigh the SiO 2 、 Bi 2 o 2 and V 2 o 5 Mix well to get the additives for later use, weigh Ag and MgFe 2 o 4 Get an antiseptic back up;
[0044] Step 2, select high-purity metal powder to weigh the ingredients, under the vacuum of 4Pa, according to the weight parts in Table 1, the weighed Rh, Fe, Nd, Cu, Al, Ga, lubricants, additives and antibacterial Add the agent into the melting furnace for melting and smelting to obtain the alloy melt, and then pour the alloy melt into strips. After the pouring is completed, fill the furnace with nitrogen, and continuously fill the furnace with nitrogen when taking out the strips. Nitrogen;
[0045] ...
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Abstract
The invention relates to the field of magnetic materials, and particularly discloses a horn magnetic material and a preparation method thereof, the horn magnetic material comprises the following components by mass: 13.5-15.5 of Nd, 0.5-0.7 of Cu, 1.7-1.9 of Al, 0.23-0.27 of Ga, 23.5-28.0 of Rh, 0.06-0.08 of an antibacterial agent, 0.01-0.04 of a lubricant, 0.02-0.07 of an additive, and the balanceiron and impurities, wherein the additive includes SiO2, Bi2O2 and V2O5. The magnetic material for the loudspeaker has the advantages that the anti-cracking capability is high, so that the sound quality of the loudspeaker is not easily influenced; in addition, the magnetic material prepared through the preparation method has the advantages of being high in coercive force, residual magnetism and antibacterial performance, stable in performance and not prone to cracking.
Description
technical field [0001] This application relates to the technical field of magnetic materials, more specifically, it relates to a magnetic material for horns and a preparation method thereof. Background technique [0002] Magnetic materials are closely related to all aspects of informatization, automation, mechatronics, national defense, and national economy. Among them is the application in the speaker. The magnet in the speaker is wound with a coil. When the sound enters the speaker, a specific change of current will be generated. The current will make the coil magnetic, so that the coil and the magnet will produce regular attraction or repulsion movements, resulting in Vibration, this kind of vibration drives the paper cone to vibrate and amplifies the sound. It can be seen that the magnet plays an important role in assisting the vibration. [0003] The invention patent application with the application publication number CN103646741A discloses a neodymium iron boron magne...
Claims
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IPC IPC(8): H01F1/055H01F41/02
CPCH01F1/0557H01F1/0553H01F41/0253H01F41/0266
Inventor 赵吉明
Owner 宁波合力磁材技术有限公司