Manufacturing method of manganese-zinc ferrite large magnetic core

A technology of manganese-zinc ferrite and a manufacturing method, which is applied in the field of magnetic core manufacturing, can solve the problems of poor coercivity, decreased production efficiency, and inability to guarantee the structure, and achieves enhanced magnetic permeability, improved service life, and improved structure. tight effect

Inactive Publication Date: 2021-02-19
NANTONG SANYUJIA MAGNETIC IND CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the extension of sintering time, the production energy consumption (electricity, water, etc.) increases and the production efficiency decreases
[0004] However, in the manufacturing process of the existing magnetic core, the structure is loose due to pre-burning. Although the powder processing is carried out, the structure cannot be well guaranteed during the sintering process, and the manganese-zinc ferrite has high magnetic properties. Conductivity and high magnetic flux density, but its coercive force is not very good, which has an impact on its quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of manganese-zinc ferrite large magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An embodiment of the present invention provides a method for manufacturing a large MnZn ferrite core, comprising the following steps:

[0039] S1. Mixing of selected materials: select raw materials of suitable purity, raw materials include ferric oxide, trimanganese tetroxide, zinc oxide, and then mix according to the proportion by weighing, and its molar percentage is; ferric oxide: 50 %, trimanganese tetroxide 40%, zinc oxide 10%, these proportions, the magnetic core permeability and magnetic flux density at the manufacturing place are relatively high;

[0040] S2. Perform pelletizing: finely grind the mixed raw materials, then add pure water for stirring, and make 2-10mm spheres through a pelletizing machine;

[0041] S3. Carry out pre-firing: place the finished sphere on the frame, and pre-fire it by placing it in a rotary kiln, and the pre-burning temperature is 850°C, which is convenient for transforming its internal structure;

[0042] S4. Vibration and grinding...

Embodiment 2

[0054] An embodiment of the present invention provides a method for manufacturing a large MnZn ferrite core, comprising the following steps:

[0055] S1. Mixing of selected materials: select raw materials of suitable purity, raw materials include ferric oxide, trimanganese tetroxide, zinc oxide, and then mix according to the proportion by weighing, and its molar percentage is; ferric oxide: 58 %, trimanganese tetroxide 30%, zinc oxide 12%, these proportions, the magnetic core permeability and magnetic flux density at the manufacturing place are relatively high;

[0056] S2. Perform pelletizing: finely grind the mixed raw materials, then add pure water for stirring, and make 2-10mm spheres through a pelletizing machine;

[0057] S3. Carry out pre-firing: place the finished sphere on the frame, and pre-fire it by placing it in a rotary kiln, and the pre-burning temperature is 930°C, which is convenient for transforming its internal structure;

[0058] S4. Vibration and grinding...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a manufacturing method of a manganese-zinc ferrite large magnetic core, and relates to the technical field of magnetic core manufacturing. The manufacturing method of the manganese-zinc ferrite large magnetic core comprises the following steps: S1, mixing selected materials; S2, pelletizing; S3, presintering; S4, carrying out vibration grinding operation; S5, preparing slurry; S6, adding an additive; S7, adding raw materials; S8, sanding; S9, performing granulation; S10, carrying out compression molding; S11, firing; S12, forming and detecting; and S13, packaging and selling. According to the invention, by adding the raw materials which are not pre-sintered, holes in the pre-sintered materials are filled in the sintering process while the proportion of the materialsin the magnetic core is increased, so that the filling of the holes in the magnetic core to other metals is reduced, and the magnetic flux and the magnetic conductivity are enhanced; and by adding thealuminum ion material in the sintering process to replace the position of iron ions, so that the coercive force of the magnetic core is obviously improved, and later magnetic storage is facilitated.

Description

technical field [0001] The invention relates to the technical field of magnetic core manufacturing, in particular to a manufacturing method of a manganese zinc ferrite large magnetic core. Background technique [0002] The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core body materials. Manganese-zinc ferrites are characterized by high magnetic permeability and high magnetic flux density, and have low loss characteristics. Nickel-zinc ferrite has the characteristics of extremely high resistivity and low magnetic permeability of less than a few hundred. [0003] During the production process of the large magnetic core, due to factors such as debinding and shrinkage during sintering, it is easy to crack and cause the magnetic core to be scrapped. In order to improve the production qualification rate of large magnetic cores, the methods of reducing the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
CPCC04B35/2633C04B35/622C04B2235/3263C04B2235/3272C04B2235/3284C04B2235/602C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/658C04B2235/5436C04B2235/5445C04B2235/5427C04B2235/3251C04B2235/3208C04B2235/3239C04B2235/3418
Inventor 樊希飞
Owner NANTONG SANYUJIA MAGNETIC IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap