CN115464203A - Processing method of iron-based magnetic material with low eddy current loss - Google Patents
Processing method of iron-based magnetic material with low eddy current loss Download PDFInfo
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- CN115464203A CN115464203A CN202211281706.0A CN202211281706A CN115464203A CN 115464203 A CN115464203 A CN 115464203A CN 202211281706 A CN202211281706 A CN 202211281706A CN 115464203 A CN115464203 A CN 115464203A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
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Abstract
The invention discloses a processing method of a low eddy current loss iron-based magnetic material, which comprises the following steps: (1) Placing a sheet-shaped iron-based magnetic material between a knife roller and a feed roller; (2) A plurality of cutters are arranged on the peripheral surface of the knife roll, and the width of the blade part is 2-10um; (3) The processing equipment drives the cutter roll and the feeding roll to rotate, a cutter on the cutter roll cuts a groove on the iron-based magnetic material, and the feeding roll rotates to enable the iron-based magnetic material to move forwards; (4) The iron-based magnetic material moves forwards to a position between the knife roller and the feeding roller, and the width of the blade parts of the plurality of cutters on the knife roller at the other position is 2-10 mu m; (5) The processing equipment drives the cutter roll and the feeding roll at the other position to rotate, and the cutter on the cutter roll at the other position cuts a groove on the iron-based magnetic material. When the processing method is used for processing the groove on the iron-based magnetic material, the width of the groove is small, and the iron-based magnetic material is low in eddy current loss and high in magnetic conductivity.
Description
Technical Field
The invention relates to a processing method of a low eddy current loss iron-based magnetic material.
Background
The iron-based magnetic material is a commonly used material for producing electronic products, and comprises a material which can be used as a wireless charging material and is required to have higher magnetic permeability and lower eddy current loss, some iron-based magnetic materials sometimes need to be processed into grid-shaped grooves on a sheet material, or the iron-based magnetic material is attached to a PET (polyethylene terephthalate) film to divide the iron-based magnetic material, the width of the grooves has an influence on the magnetic permeability and the eddy current loss of the iron-based magnetic material, the larger the width of the grooves is, the lower the magnetic permeability of the iron-based magnetic material is, and the larger the eddy current loss is, the common groove processing adopts a rolling method, namely, a rolling die or a forming bulge is arranged on a roller body, and the grid-shaped grooves are rolled on the iron-based magnetic material through the rolling die or the forming bulge, but the width of the grooves processed by the rolling die is relatively larger, and the performance of the iron-based magnetic material is greatly influenced.
Disclosure of Invention
The invention aims to provide a processing method of a low eddy current loss iron-based magnetic material, which is used for processing a groove on the iron-based magnetic material, has small width of the groove, low eddy current loss and high magnetic conductivity of the iron-based magnetic material, and is beneficial to ensuring the good performance of the iron-based magnetic material.
In order to solve the technical problems, the invention adopts a technical scheme that: the processing method of the low eddy current loss iron-based magnetic material comprises the following steps:
(1) Placing a sheet iron-based magnetic material between a knife roll and a feed roll, wherein the knife roll and the feed roll are arranged in parallel, and the knife roll is positioned above the feed roll;
(2) The outer peripheral surface of the knife roll is provided with a plurality of cutters, the outer ends of the cutters are knife edge parts, the cutters are radially distributed on the outer peripheral surface of the knife roll, and the width of the knife edge parts is 2-10 microns;
(3) The processing equipment drives the cutter roll and the feeding roll to rotate, a cutter on the cutter roll cuts a groove on the iron-based magnetic material, and the feeding roll rotates to enable the iron-based magnetic material to move forwards;
(4) The iron-based magnetic material moves forwards to a position between a cutter roller and a feeding roller at another position, a plurality of cutters are arranged on the cutter roller at the other position, the outer ends of the cutters are blade parts, the cutters are axially distributed on the outer peripheral surface of the cutter roller, and the width of the blade part is 2-10 mu m;
(5) The processing equipment drives the cutter roll and the feeding roll at the other position to rotate, and the cutter on the cutter roll at the other position cuts a groove on the iron-based magnetic material.
Preferably, the number of the knife rolls is the same as the number of the types of the grooves to be cut on the iron-based magnetic material, the different directions and the different shapes of the grooves on the iron-based magnetic material correspond to the different types respectively, and the shape and the direction of the cutting edge part of the cutting knife on one knife roll correspond to one type of the grooves.
Preferably, the hardness of the cutting knife is RCH 64-65, and the height of the cutting knife is 1.2-2.0mm.
Preferably, the plurality of cutters are radially or axially distributed on the outer circumferential surface of the cutter roller.
Preferably, the knife edge part is arranged perpendicular to or inclined with respect to the center line of the knife roller, and how to set up the cutting requirements is specifically considered.
The invention has the beneficial effects that: according to the processing method of the iron-based magnetic material with low eddy current loss, the cutter rollers are provided with the cutters with extremely thin blades, and the cutter rollers are arranged for continuous cutting as required, and the width of the groove formed by the cutters when the groove is processed on the iron-based magnetic material is small, so that the iron-based magnetic material is low in eddy current loss and high in magnetic conductivity, and the iron-based magnetic material is favorable for ensuring good performance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 and 2 are schematic structural views of a cutter roll and a cutter in the method for processing a low eddy current loss iron-based magnetic material according to the present invention;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 1;
fig. 4 is a schematic view of a structure of a cutter roll and a cutter in another embodiment of the method for processing a low eddy-current loss iron-based magnetic material according to the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 6 is a schematic view of the tool of FIG. 1 in an embodiment;
FIG. 7 is a schematic view of the tool of FIG. 2 in an embodiment;
fig. 8 is a schematic view of a cutter cutting an iron-based magnetic material in the method for processing an iron-based magnetic material with low eddy current loss according to the present invention;
FIGS. 9 and 10 are schematic views of different shapes cut into an iron-based magnetic material;
FIG. 11 is a schematic view of the shape cut into the iron-based magnetic material when the cutter of FIG. 1 is a circular cutter;
fig. 12 and 14 are schematic views of shapes cut in the iron-based magnetic material when the cutter of fig. 2 is a fan-shaped cutter;
fig. 13 is a schematic view of the shape of the iron-based magnetic material cut by the circular cutter and the fan-shaped cutter arranged at a distance on the cutter roll.
The components in the drawings are numbered as follows: 1. the cutting device comprises a knife roll, 2, a cutter, 3, a rectangular sheet-shaped cutter, 4, a fan-shaped cutter, 5, a feeding roll, 6, a knife edge part, 7, an iron-based magnetic material, 8 and a PET film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention comprises the following steps:
referring to fig. 1, 2, 6 and 7, the method for processing the low eddy current loss iron-based magnetic material of the present invention includes the following steps:
(1) Placing a sheet iron-based magnetic material 7 between a knife roller 1 and a feed roller 5, wherein the knife roller 1 and the feed roller 5 are arranged in parallel, and the knife roller 1 is positioned above the feed roller 5;
(2) The outer circumferential surface of the knife roll 1 is provided with a plurality of cutters 2, the outer ends of the cutters 2 are blade parts 6, the cutters 2 are radially distributed on the outer circumferential surface of the knife roll 1, the width of the blade part 6 is 2-10 microns, and the blade part 6 is very thin, so that the width of a groove cut on an iron-based magnetic material 7 by the blade part 6 is very small;
(3) The processing equipment drives the knife roll 1 and the feed roll 5 to rotate, a groove is cut on the iron-based magnetic material 7 by the cutter 2 on the knife roll 1, and the iron-based magnetic material 6 moves forwards by the rotation of the feed roll 5;
(4) The iron-based magnetic material 6 moves forwards to a position between a knife roller 1 and a feed roller 5 at another position of the cutting equipment, a plurality of cutters 2 are arranged on the knife roller 1 at the other position, the outer ends of the cutters 2 are blade parts 6, the cutters 2 are axially distributed on the outer peripheral surface of the knife roller 1, and the width of the blade parts 6 is 2-10 microns;
(5) The processing equipment drives the other knife roller 1 and the feeding roller 5 to rotate, the cutter 2 on the other knife roller 1 cuts another groove on the iron-based magnetic material 7, two grooves can be cut through the steps, and more knife rollers 1 and feeding rollers 5 can be arranged according to the cutting requirements.
Preferably, the number of the knife rolls is the same as the number of the types of the grooves to be cut on the iron-based magnetic material, the different directions and the different shapes of the grooves on the iron-based magnetic material correspond to the different types respectively, the shape and the direction of the cutting edge part of the cutting knife on one knife roll correspond to one type of the grooves, and the number of the knife rolls and the shape and the direction of the cutting edge part of the cutting knife are set according to the cutting shape requirement.
Preferably, the hardness of the cutting knife 2 is RCH 64-65, the height of the cutting knife 2 is 1.2-2.0mm, and the cutting knife has high hardness, so that the requirement of cutting processing on the iron-based magnetic material 7 is met.
Preferably, the plurality of cutters 2 are radially or axially distributed on the outer circumferential surface of the cutter roller 1.
Preferably, as shown in fig. 3, when the plurality of cutters 2 are radially distributed on the outer circumferential surface of the cutter roll 1, the cutters 2 are annular cutters, and when the cutters 2 are used to cut grooves in the iron-based magnetic material 7, the distribution shape of the grooves in the iron-based magnetic material 7 is shown in fig. 11.
Preferably, as shown in fig. 4, when the plurality of cutting blades 2 are radially distributed on the outer circumferential surface of the cutter roll 1, the cutting blades 2 are fan-shaped cutting blades 4, gaps are provided between adjacent fan-shaped cutting blades 4 located on the same plane, and when the fan-shaped cutting blades 4 are used to cut grooves in the iron-based magnetic material 7, the grooves on the iron-based magnetic material 7 are distributed in a shape like a broken line in fig. 10, and the grooves are intermittently distributed.
Preferably, the plurality of cutters 2 are arranged in an axially spaced manner from the circular cutter 4 when radially arranged on the outer circumferential surface of the cutter roll 1, so that when the cutter roll 1 rotates the circular cutter and the circular cutter 4 to simultaneously cut a groove in the iron-based magnetic material 7, the groove arrangement shape on the iron-based magnetic material 7 is as shown in fig. 13.
Preferably, as shown in fig. 5, when the plurality of cutters 2 are axially distributed on the outer peripheral surface of the cutter roll 1, the cutters 2 are rectangular thin-plate-shaped cutters 3, and when the rectangular thin-plate-shaped cutters 3 are used to cut grooves in the iron-based magnetic material 7, the distribution of the grooves in the iron-based magnetic material 7 is as shown in fig. 12 and 14.
Preferably, the outer end of the knife edge part 6 is in a right-angle triangle shape or an isosceles triangle shape, and the end part is sharp and sharp, so that the cutting is convenient.
When the processing method of the iron-based magnetic material with low eddy current loss works, the iron-based magnetic material 7 to be cut is placed between the knife roll 1 and the feeding roll 5, the cutting processing equipment drives the knife roll 1 and the feeding roll 5 to rotate, the rotating directions of the knife roll 1 and the feeding roll 5 are opposite, the feeding roll 5 enables the iron-based magnetic material 7 to move forwards, the cutter 2 on the knife roll 1 cuts a groove on the iron-based magnetic material 7, and when the cutter cuts, as shown in figure 8, the width of the blade part 6 is small, the blade part 6 is extremely thin, the width of the groove cut on the iron-based magnetic material 7 is also small, so that the influence on the magnetic conductivity of the iron-based magnetic material 7 is small, the eddy current loss is low, and the good performance of the iron-based magnetic material is favorably ensured.
The cutting processing equipment can be provided with a front knife roller and a rear knife roller 1, wherein an annular cutter is arranged on one knife roller 1, and a rectangular thin plate-shaped cutter 3 is arranged on the other knife roller 1, so that after the cutting processing of the cutters on the two knife rollers 1, a groove shape distributed as shown in figure 9 can be cut on the iron-based magnetic material 7. If a knife roller 1 is provided with an annular cutter and a fan-shaped cutter 4 at the same time, the annular cutter and the fan-shaped cutter 4 are arranged at intervals in the axial direction, and the other knife roller 1 is provided with a rectangular thin plate-shaped cutter 3, the shape of grooves distributed as shown in figure 10 can be cut on an iron-based magnetic material 7 after the cutting processing of the cutters on the two knife rollers 1.
By changing the shape and the arrangement mode of the cutters, different groove distribution shapes can be cut and processed.
Through actual detection, the performance data such as the eddy current loss, the magnetic permeability and the like of the material after the groove is processed on the iron-based magnetic material by adopting the rolling processing method and the performance data such as the eddy current loss, the magnetic permeability and the like of the material after the groove is processed on the iron-based magnetic material by adopting the rolling cutting processing method can be obtained, and the relevant data are shown in the following table:
from the above table data, it can be seen that the material thickness range that can be processed by roll cutting is larger, the groove width is smaller, the eddy current loss of the processed material is lower, the magnetic permeability is larger, and the performance of the material is better.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A processing method of a low eddy current loss iron-based magnetic material is characterized by comprising the following steps:
(1) Placing a sheet iron-based magnetic material between a knife roll and a feed roll, wherein the knife roll is arranged in parallel with the feed roll and is positioned above the feed roll;
(2) The outer peripheral surface of the knife roll is provided with a plurality of cutters, the outer ends of the cutters are knife edge parts, the cutters are radially distributed on the outer peripheral surface of the knife roll, and the width of the knife edge parts is 2-10 microns;
(3) The processing equipment drives the cutter roll and the feeding roll to rotate, a cutter on the cutter roll cuts a groove on the iron-based magnetic material, and the feeding roll rotates to enable the iron-based magnetic material to move forwards;
(4) The iron-based magnetic material moves forwards to a position between the cutter roller and the feeding roller, the cutter roller at the other position is provided with a plurality of cutters, the outer ends of the plurality of cutters are cutter edges, the plurality of cutters are axially distributed on the outer peripheral surface of the cutter roller, and the width of each cutter edge is 2-10 microns;
(5) The processing equipment drives the cutter roll and the feeding roll at the other position to rotate, and the cutter on the cutter roll at the other position cuts a groove on the iron-based magnetic material.
2. The method as claimed in claim 1, wherein the number of the knife rolls is the same as the number of the types of the grooves to be cut on the iron-based magnetic material, the different directions and shapes of the grooves on the iron-based magnetic material correspond to the different types, and the shape and direction of the cutting edge of the cutting knife on one knife roll correspond to one type of the grooves.
3. The method as claimed in claim 1, wherein the hardness of the cutting tool is RCH 64-65, and the height of the cutting tool is 1.2-2.0mm.
4. The method as claimed in any one of claims 1 to 3, wherein the plurality of cutting blades are radially or axially distributed on the outer circumferential surface of the cutter roll.
5. The method as claimed in claim 4, wherein the blade portion is perpendicular to or inclined with respect to a center line of the cutter roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281706.0A CN115464203A (en) | 2022-10-19 | 2022-10-19 | Processing method of iron-based magnetic material with low eddy current loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281706.0A CN115464203A (en) | 2022-10-19 | 2022-10-19 | Processing method of iron-based magnetic material with low eddy current loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115464203A true CN115464203A (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211281706.0A Pending CN115464203A (en) | 2022-10-19 | 2022-10-19 | Processing method of iron-based magnetic material with low eddy current loss |
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| Country | Link |
|---|---|
| CN (1) | CN115464203A (en) |
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2022
- 2022-10-19 CN CN202211281706.0A patent/CN115464203A/en active Pending
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