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A kind of y30h-2 permanent magnet ferrite magnetic tile for DC motor and its preparation method

A technology of Y30H-2, permanent magnet ferrite, which is applied in the manufacture of motor generators, magnetic circuits characterized by magnetic materials, electric components, etc., which can solve the problems of increased production costs, difficulty in forming magnetic tiles, and low forming rates. Problems, to achieve the effect of improving production efficiency, improving green embryo forming rate, and low price

Active Publication Date: 2021-07-02
马鞍山天磁磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Y30H-2 permanent ferrite magnet tiles for DC motors are mainly made of iron oxide and strontium oxide, and are made by the existing preparation process. Due to the defects of the existing preparation process, the molding of the magnetic tiles is difficult and the molding rate is low.
When preparing permanent ferrite with existing technology, some preparation methods will add precious metals such as La and Co to improve the magnetic properties, such as Chinese patent CN200610050412.1, due to the addition of precious metals, the production cost will be greatly increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The raw materials of Y30H-2 permanent magnet ferrite tiles for DC motors described in this embodiment are calculated in parts by weight: 70 parts of calcined coarse powder, 30 parts of grinding material, 0.8 part of calcium carbonate, 0.2 part of strontium carbonate, oxidized 0.3 parts of aluminum, 0.3 parts of bismuth oxide, 0.2 parts of boric acid, and 0.15 parts of white carbon black.

[0022] The composition of the calcined coarse powder includes iron oxide and strontium oxide, and the composition weight percentage of the calcined coarse powder is: 85% of iron oxide and 15% of strontium oxide. When preparing the calcined coarse powder, first put 85% of iron oxide and 15% of strontium oxide into a mixer and mix them evenly, and then put the mixed mixture into a pelletizer to granulate, and then The granulated material obtained by granulation is put into a rotary kiln for high-temperature sintering, and the sintered granulated material is sent into a ball mill to be c...

Embodiment 2

[0033] The raw materials of Y30H-2 permanent ferrite magnetic tiles for DC motors described in this embodiment are calculated in parts by weight: 75 parts of calcined coarse powder, 25 parts of grinding material, 0.7 part of calcium carbonate, 0.25 part of strontium carbonate, oxidized 0.35 parts of aluminum, 0.2 parts of bismuth oxide, 0.2 parts of boric acid, and 0.15 parts of white carbon black.

[0034] The composition and weight percentage of calcined coarse powder and grinding material in this embodiment are the same as those in Embodiment 1.

[0035] The preparation method of the Y30H-2 permanent magnet ferrite magnetic tile for the above-mentioned DC motor comprises the following steps:

[0036] (1) Stirring: put the calcined coarse powder and grinding material into the mixer and stir evenly after being weighed according to their parts by weight;

[0037] (2) Grinding: Add the calcined coarse powder and grinding material that are evenly stirred into the ball mill, and...

Embodiment 3

[0044] The raw materials of the Y30H-2 permanent magnet ferrite tiles for DC motors described in this embodiment are calculated in parts by weight: 80 parts of calcined coarse powder, 20 parts of grinding material, 0.6 part of calcium carbonate, 0.3 part of strontium carbonate, oxidized 0.4 parts of aluminum, 0.2 parts of bismuth oxide, 0.2 parts of boric acid, and 0.2 parts of white carbon black.

[0045] The composition and weight percentage of calcined coarse powder and grinding material in this embodiment are the same as those in Embodiment 1.

[0046]The preparation method of the Y30H-2 permanent magnet ferrite magnetic tile for the above-mentioned DC motor comprises the following steps:

[0047] (1) Stirring: put the calcined coarse powder and grinding material into the mixer and stir evenly after being weighed according to their parts by weight;

[0048] (2) Grinding: Add the calcined coarse powder and grinding material that are evenly stirred into the ball mill, and t...

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Abstract

The invention discloses a Y30H‑2 permanent magnet ferrite tile for a DC motor and a preparation method thereof, and relates to the technical field of magnetic materials. The raw materials of the Y30H-2 permanent magnet ferrite tiles for DC motors of the present invention include by weight: 70-80 parts of pre-fired coarse powder, 20-30 parts of grinding material, 0.6-0.8 parts of calcium carbonate, 0.2-0.3 parts of strontium carbonate, 0.3-0.4 parts of aluminum oxide, 0.2-0.3 parts of bismuth oxide, 0.2-0.3 parts of boric acid, 0.1-0.2 parts of white carbon black. The above raw materials are stirred, ground, precipitated, formed, dried, polished and magnetized to obtain finished ferrite tiles. The preparation method of the Y30H-2 permanent magnet ferrite tile for DC motors according to the present invention is novel in conception, and the method is connected in an orderly manner; and the preparation raw materials do not contain precious elements such as Co and La, which reduces the production cost; the green embryo forming rate is high ,high productivity.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a Y30H-2 permanent ferrite magnetic tile for a DC motor and a preparation method thereof. Background technique [0002] Permanent magnet materials can provide stable and long-lasting magnetic flux without consuming electric energy, which is one of the important means of saving energy. Permanent magnet motors are typical high-efficiency, energy-saving and low-carbon industrial products, and permanent magnet ferrite wet-pressed magnetic tiles, as the core components of permanent magnet motors, are widely used in automobiles and motorcycles, household appliances, power tools and other industries. [0003] Permanent magnet ferrite is made of iron oxide and strontium oxide or barium oxide as the main raw materials, and is prepared by ceramic technology. It is divided into two types: anisotropic and isotropic. The Y30H-2 permanent magnet ferrite tiles for DC motors are main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622H02K1/06H02K1/02H02K15/03
CPCC04B35/2683C04B35/622C04B2235/3208C04B2235/3213C04B2235/3217C04B2235/3409C04B2235/3418H02K1/02H02K1/06H02K15/03
Inventor 朱文华
Owner 马鞍山天磁磁业有限公司
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