Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for changing the performance of ferrite magnetic sheet

A ferrite magnet and ferrite technology, which is applied in the field of changing the performance of ferrite magnetic sheets, can solve the problems of inability to solve product performance consistency, increase production costs, etc., and achieve the effect of solving the problem that product performance is difficult to have consistency

Active Publication Date: 2019-12-17
HENGDIAN GRP DMEGC MAGNETICS CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although this solution can change the performance of ferrite, it seriously increases the production cost and cannot solve the problem of product performance consistency

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
  • A method for changing the performance of ferrite magnetic sheet
  • A method for changing the performance of ferrite magnetic sheet
  • A method for changing the performance of ferrite magnetic sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment changes the performance of the ferrite magnetic sheet according to the following methods:

[0050] (1) For a nickel-zinc ferrite magnetic sheet with a thickness of 120μm and a frequency of 128KHz, take 160 pieces of samples with inductance values ​​of 11.2-11.25, 11.3-11.35, 11.4-11.45, and 11.5-11.55, and the inductance value changes The step size range is 0.05.

[0051] (2) Attach a polyethylene terephthalate (PET) film to the sample selected in step (1) to obtain a film sample.

[0052] (3) The length of the selected steel rod is 30cm, and the diameter is 30mm, 40mm and 50mm, and the samples of the step range of each inductance value change in step (1) are divided into 4 groups, 40 pieces in each group, and the selected steel rods are used Under the pressure of 0.3MPa, roll the corresponding group of film samples to crack the slices, and leave a group without cracks for comparison. Use an inductance tester to test the inductance value of the cracked ...

Embodiment 2

[0059] This embodiment changes the performance of the ferrite magnetic sheet according to the following methods:

[0060] (1) For a nickel-zinc ferrite magnetic sheet with a thickness of 20μm and a frequency of 6.78MHz, take 160 pieces of samples with inductance values ​​of 11.2-11.25, 11.3-11.35, 11.4-11.45, and 11.5-11.55. The step size range of the change is 0.05.

[0061] (2) Attach a polyethylene terephthalate (PET) film to the sample selected in step (1) to obtain a film sample.

[0062] (3) The length of the selected steel rod is 20cm, and the diameter is 30mm, 40mm and 50mm, and the samples of the step range of each inductance value change in step (1) are divided into 4 groups, 40 pieces in each group, and the selected steel rods are used Under the pressure of 0.1MPa, roll the corresponding group of film samples to split, and leave a group without splits for comparison. Use an inductance tester to test the inductance value of the split samples at a set frequency of 6....

Embodiment 3

[0068] This embodiment changes the performance of the ferrite magnetic sheet according to the following methods:

[0069] (1) For a nickel-zinc ferrite magnetic sheet with a thickness of 300μm and a frequency of 13.56MHz, take 160 pieces of samples with inductance values ​​of 11.2-11.25, 11.3-11.35, 11.4-11.45, and 11.5-11.55. The step size range of the change is 0.05.

[0070] (2) Attach a polyethylene terephthalate (PET) film to the sample selected in step (1) to obtain a film sample.

[0071] (3) The length of the selected steel rod is 40cm, and the diameter is 30mm, 40mm and 50mm, and the samples in the step range of each inductance value change in step (1) are divided into 4 groups, 40 pieces in each group, and the selected steel rods are used Under the pressure of 0.5MPa, roll the corresponding group of film samples to split, and leave a group without splits for comparison. Use an inductance tester to test the inductance value of the split samples at a set frequency of ...

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
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for changing the performance of a ferrite magnetic sheet. The method comprises the following steps: 1) setting a step range of inductance value change, and selecting asample from the ferrite magnetic sheet with the same thickness and composition; 2) sticking a film on the selected sample to obtain a film sticking sample; 3) selecting the diameter and length of thesteel rod, grouping the film sticking samples in each inductance value step range, fracturing the samples with the corresponding steel rod roller in each group, and testing the inductance value of thesamples after the fracturing; 4) establish that corresponding relation among the step size range of inductance value, the diameter and length of the steel rod, the pressure and the inductance value of the sample measured after the splitting; 5) according to the inductance value of the ferrite magnetic sheet to be processed, the required inductance value and the corresponding relation, obtaining the corresponding rolling condition and carrying out roll fracturing on the ferrite magnetic sheet to be processed to obtain the ferrite magnetic sheet whose inductance value meets the requirements. The method solves the problem that the product performance of the ferrite magnetic disk produced in industry is difficult to have consistency.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, relates to the performance of a ferrite magnetic sheet, in particular to a method for changing the performance of a ferrite magnetic sheet. Background technique [0002] Electromagnetic induction wireless charging uses the electromagnetic induction principle of electricity-generated magnetism-magnetism-generated electricity, that is, "electricity" and "magnetism" can be transformed into each other. The two ends of the mobile phone and the wireless charger are respectively equipped with receiving / transmitting coils. The current of the wireless charger generates a magnetic field through the coil at the transmitting end. DC direct current used. [0003] In wireless charging devices, a nickel-copper-zinc soft ferrite sheet must be used. Because it is used in mobile phones, the magnetic sheet used must be very thin, generally 20-300um, and such a magnetic sheet The sheet is made of pre-fi...

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 Patents(China)
IPC IPC(8): H01F41/02
CPCH01F41/0233
Inventor 王媛珍单震包宇航苏艳锋於扬栋黄慧博
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com