CN110323054B - Method for processing iron core for electromagnetic device, iron core, and electromagnetic device - Google Patents
Method for processing iron core for electromagnetic device, iron core, and electromagnetic device Download PDFInfo
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- CN110323054B CN110323054B CN201910502474.9A CN201910502474A CN110323054B CN 110323054 B CN110323054 B CN 110323054B CN 201910502474 A CN201910502474 A CN 201910502474A CN 110323054 B CN110323054 B CN 110323054B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
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Abstract
The invention discloses a processing method of an iron core for an electromagnetic device, the iron core and the electromagnetic device, wherein the iron core is subjected to local nitriding treatment, and is provided with a collision surface which is contacted with or collided with other components when in use; the local nitriding treatment comprises nitriding treatment of the collision surface or nitriding treatment of the collision surface extending from the collision surface by a selected length. The iron core processed by the method of the invention not only can maintain the hardness and the wear resistance and prolong the service life of the iron core, but also can increase the electromagnetic attraction by 34-43% compared with the electromagnetic attraction under the condition that the surface of the iron core is completely processed. In addition, the iron core has low coercive force Hc, high magnetic permeability mu, high saturation magnetic induction Bs, stable magnetism and no magnetic aging. Therefore, the invention solves the technical problems that the hardness and the wear resistance of the iron core are ensured and the electromagnetic attraction is kept, and overcomes the technical bias that the service life of the iron core and the electromagnetic attraction cannot be considered at the same time.
Description
Technical Field
The invention relates to a processing method of an iron core for an electromagnetic device, the iron core and the electromagnetic device.
Background
The electromagnetic device provides suction through electromagnetic conduction to realize corresponding functions, such as conduction of a valve in an electromagnetic valve, provision of suction in an electromagnet and the like. In these electromagnetic devices, since the electromagnetic device needs to provide an attractive force, it is inevitable that the iron core is continuously contacted or collided with other components due to the attractive force, and thus, the iron core is abraded due to multiple times of contact or collision, thereby affecting the life of the iron core and further affecting the service life of the electromagnetic device.
Such as a jacquard electromagnetic assembly. Electromagnetic components of jacquard are used in electronic jacquard; the quality of the electromagnet serving as a core component in the electromagnetic assembly affects the service efficiency and the service life of the electronic jacquard machine. Because the working end face of the iron core and the swing hook are frequently attracted and separated when the electromagnetic assembly works, the collision face of the iron core needs to have high enough wear resistance, and particularly for an ultrahigh-speed jacquard machine, namely an electronic jacquard machine with the highest rotating speed of 600rpm, the economic rotating speed of 450-550 rpm and the maximum weft insertion rate of 1150-1200 m/min. For this purpose, the surface of the iron core is nitrided to increase wear resistance.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and provides a method for processing an iron core for an electromagnetic device, an iron core, and an electromagnetic device.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a method for processing an iron core for an electromagnetic device is characterized in that the iron core is subjected to local nitriding treatment.
According to one embodiment of the invention, the surface area of the locally nitrided iron core is between 0.1% and 50% of the total surface area of the iron core.
According to one embodiment of the invention, the surface area of the core treated by local nitriding is not more than 5% of the total surface area of the core.
According to one embodiment of the invention, the core has a collision surface which, in use, contacts or collides with another component; the local nitriding treatment comprises nitriding treatment of the collision surface or nitriding treatment of the collision surface extending from the collision surface by a selected length.
According to one embodiment of the present invention, the iron core includes a first support rod having two ends along a length direction, and end surfaces of the two ends are collision surfaces.
According to one embodiment of the invention, the iron core is I-shaped in structure and comprises a first support rod, a second support rod and a connecting rod, wherein two ends of the connecting rod are respectively connected with the middle part of the first support rod and the middle part of the second support rod; the first supporting rod is provided with two ends along the length direction, and the end faces of the two ends are collision faces.
According to an embodiment of the invention the length of the first strut is greater than the length of the second strut and/or the width of the second strut is greater than the width of the first strut.
According to one embodiment of the invention, the selected length of extension is the difference between the length of the first strut and the length of the second strut.
According to an embodiment of the present invention, the second leg has two end faces in a length direction, and the nitriding treatment portion of the core further includes or extends from the end faces of the two ends of the second leg by a selected length.
According to one embodiment of the present invention, the local nitriding treatment comprises the following specific steps:
the method comprises the following steps that firstly, two first planes and two second planes which are oppositely arranged are arranged in the thickness direction of an iron core, a first outer edge is arranged in the width direction of a first supporting rod, a second outer edge is arranged in the width direction of a second supporting rod, a plurality of iron cores are arranged along a straight line to form an assembly, the first planes and the second planes of two adjacent iron cores are mutually contacted, the two adjacent iron cores are horizontally turned over for 180 degrees by taking the arranged straight line as an axis, in the two adjacent iron cores, the first outer edge of one iron core is aligned with the second outer edge of the other iron core, and collision surfaces of the first supporting rod of one iron core and the first supporting rod of the other iron core are mutually arranged in parallel and level;
covering the end faces of the connecting rods in the thickness direction in the assembly and the end faces of the two outermost iron cores in the width direction of the connecting rods;
and step three, nitriding the assembly obtained in the step two.
According to an embodiment of the present invention, the nitriding treatment is a liquid nitriding treatment, a gas nitriding treatment or an ion nitriding treatment.
An iron core for an electromagnetic device, which is prepared by the above-described method for treating an iron core for an electromagnetic device.
An electromagnetic device comprises the iron core and a coil, wherein the coil is wound on the iron core.
An electromagnetic assembly for a jacquard machine comprises the electromagnetic device.
The iron core processed by the method of the invention not only can maintain the hardness and the wear resistance and prolong the service life of the iron core, but also can increase the electromagnetic attraction by 34-43% compared with the electromagnetic attraction under the condition that the surface of the iron core is completely processed. In addition, the iron core has low coercive force Hc, high magnetic permeability mu, high saturation magnetic induction Bs, stable magnetism and no magnetic aging. Therefore, the invention solves the technical problems that the hardness and the wear resistance of the iron core are ensured and the electromagnetic attraction is kept, and overcomes the technical bias that the service life of the iron core and the electromagnetic attraction cannot be considered at the same time.
According to the invention, the collision surface and the extension part are selected for local nitriding treatment, and other surfaces do not participate in the treatment as much as possible, so that the method for arranging the plurality of iron cores is selected, the treatment efficiency is improved, and the covering is convenient; not only can expose the collision surface and the extension part thereof to be treated, but also can cover other surfaces most simply and conveniently; not only can the position of possible collision be ensured to enhance the hardness and the wear resistance, but also the electromagnetic attraction can be improved.
The processing effect of the invention finally increases the electromagnetic attraction by 34-43% compared with the whole processing case, which is the unexpected technical effect of the invention. Compared with the condition that the surface of the iron core is completely processed, the electromagnetic attraction force is increased, and the effect of improving the electromagnetic attraction force by 34% -43% is achieved under the same voltage condition. In addition, compared with the situation that the electromagnetic attraction force with the same size is needed in the whole surface treatment, the coil needed by the whole electromagnetic device after the iron core is used is changed from the original 0.052 wire diameter 4000 turns to the current 0.05 wire diameter 4000 turns, so that the whole volume can be reduced, and the space is saved; the power consumption of the electromagnetic device is reduced by 9.2%, and energy is saved; these are also an unexpected technical effect.
The iron core processed by the method is applied to the electromagnetic assembly of the jacquard machine, so that the running requirement of the ultrahigh-speed jacquard machine can be met, the interference among needles during needle selection control is reduced, and the stability of the performance of the electronic jacquard machine can be kept.
Drawings
Fig. 1 is a perspective view of an iron core;
FIG. 2 is a block diagram of another perspective of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a block diagram of a multi-piece core arrangement assembly;
fig. 5 is a front view of fig. 4.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
example 1
The method for processing an iron core for an electromagnetic device according to the present embodiment is characterized by performing a local nitriding process on the iron core 1. The surface area of the iron core 1 subjected to the local nitriding treatment is 0.1-50% of the total surface area of the iron core 1. The surface area of the partially nitrided iron core 1 is not more than 5% of the total surface area of the iron core 1.
As shown in fig. 1 and 2, the iron core 1 has a collision surface 5, and the collision surface 5 is in contact with or collides with other components when in use; the local nitriding treatment comprises nitriding the collision surface 5 or extending a selected length from the collision surface 5.
The iron core 1 comprises a first supporting rod 2, and the first supporting rod 2 is arranged along the length direction L1Having two ends, the end faces of which are collision faces 5. Specifically, in the embodiment, the iron core 1 has an i-shaped structure, and includes a first support rod 2, a second support rod 3 and a connecting rod 4, wherein two ends of the connecting rod 4 are respectively connected to the middle of the first support rod 2 and the middle of the second support rod 3; the first support rod 2 is provided with two ends along the length direction, and the end surfaces of the two ends are collision surfaces 5.
As shown in fig. 1 and 3, the length L of the first strut 21Is greater than the length L of the second strut 32And/or the width T of the second strut 32Is greater than the width T of the first strut 21. The second support rod 3 has two end faces along the length direction, and the nitriding treatment portion of the iron core 1 further includes the end faces at the two ends of the second support rod 3 or extends from the end faces by a selected length.
The specific steps of the local nitriding treatment comprise:
step one, as shown in figure 1, two iron cores 1 are oppositely arranged in the thickness directionFirst plane 11 and second plane 12, as shown in fig. 4, the width direction T of the first bar 21Having a first outer edge 13, the width direction T of the second strut 32There is a second outer edge 14, as shown in fig. 4 and 5, where the plurality of cores 1 are arranged in a line, hereinafter referred to as an alignment line, as indicated by the dashed line in fig. 4, to form a module. The first plane 11 and the second plane 12 of two adjacent iron cores 1 are mutually contacted, the two adjacent iron cores 1 are horizontally turned by 180 degrees by taking the alignment line as an axis, in the two adjacent iron cores 1, a first outer edge 13 of one iron core 1 and a second outer edge 14 of the other iron core are arranged in an aligned mode, and a collision surface 5 of a first support rod 2 of one iron core 1 and a collision surface 5 of a first support rod 2 of the other iron core 1 are arranged in an aligned mode;
step two, covering the end surfaces in the thickness direction of the connecting rods 4 in the assembly, namely the area 6, and the end surfaces in the width direction of the connecting rods 4 of the two outermost iron cores 1;
and step three, nitriding the assembly obtained in the step two.
The extension is selected to be the difference between the length of the first bar 2 and the length of the second bar 3, as shown in fig. 5, the second bar 3 covers the middle of the first bar 2, and the difference between the length of the first bar 2 and the length of the second bar 3 is the exposed surface 10 above and below the first bar 2.
The nitriding treatment is liquid nitriding treatment, gas nitriding treatment or ion nitriding treatment. The present embodiment uses an ion nitriding treatment. During the ion nitriding treatment, the two collision surfaces 5 of the first support rod 2 are exposed, so that the ion nitriding treatment can be participated; the portion of the second strut 3 not covering the stem portion of the first strut 2 is extended by a selected length, i.e. the exposed surface 10, which may participate in the ion nitriding process; the end face in the thickness direction of the connecting rod 4, namely the area 6 is covered, and does not participate in ion nitriding treatment; the end surface of the connecting rod 4 of one iron core 1 in the width direction is shielded by the end surface of the connecting rod 4 of the other iron core 1 in the width direction and the partial end surface of the second supporting rod 3 of the other iron core 1 which is wider than the first supporting rod 2, so that the ion nitriding treatment cannot be participated; the end faces of the two iron cores 1 at the outermost sides in the width direction of the connecting rods 4 are shielded and do not participate in ion nitriding treatment; and the overlapped parts of the first support rod 2 and the second support rod 3 are mutually covered and do not participate in the ion nitriding treatment.
It should be noted that, because the method of arranging the plurality of iron cores 1 is adopted, on the end surface of the connecting rod 4 in the thickness direction, the width of the first supporting rod 2 is different from that of the second supporting rod 3, so that the end surface of the connecting rod 4 in the thickness direction, which is blocked by the second supporting rod 3, cannot be covered. Also, since the widths of the first and second struts 2 and 3 are not uniform, a portion of the second strut 3 cannot be covered, but these undesired surfaces do not participate in the treatment, which does not affect the result of the final ion nitriding treatment, and finally the electromagnetic attraction force is still increased by 34% to 43% as compared with the case of the entire treatment, which is an unexpected technical effect of the present invention.
The iron core 1 processed by the method is applied to a jacquard electromagnetic component, and under the condition of meeting the designed electromagnetic attraction requirement, the original resistor 585 ohm and the current 0.0282 ampere can be changed into the resistor 640 ohm and the current 0.0256 ampere, so that the voltage is not changed, and the power consumption is reduced from 0.465 watt to 0.422 watt. In an actual test, under the same voltage condition, the suction force of the jacquard electromagnetic assembly test with the surface of the iron core 1 completely treated is 70-80 g, and the suction force of the jacquard electromagnetic assembly of the iron core 1 processed by the method is 100-110 g.
The iron core 1 processed by the method of the invention not only can maintain the hardness and the wear resistance and prolong the service life of the iron core 1, but also can increase the electromagnetic attraction by 34 to 43 percent compared with the electromagnetic attraction under the condition that the surface of the iron core 1 is completely processed. Further, the core 1 has low coercive force Hc, high magnetic permeability μ, high saturation magnetic induction Bs, stable magnetism, and no magnetic aging. Therefore, the invention solves the technical problems that the hardness and the wear resistance of the iron core 1 are ensured and the electromagnetic attraction is kept, and overcomes the technical bias that the service life of the iron core 1 and the electromagnetic attraction cannot be considered at the same time.
According to the invention, the collision surface 5 and the extension part are selected for local nitriding treatment, and other surfaces do not participate in the treatment as much as possible, so that the method for arranging the plurality of iron cores 1 is selected, the treatment efficiency is improved, and the covering is convenient; not only can expose the collision surface 5 and the extension part thereof to be treated, but also can cover other surfaces most conveniently; not only can the position of possible collision be ensured to enhance the hardness and the wear resistance, but also the electromagnetic attraction can be improved.
The method for arranging the plurality of iron cores 1 is selected, even if a part of the surface which does not need to be processed is exposed, the whole processing effect is not influenced, and finally, the electromagnetic attraction is increased by 34-43% compared with the whole processing condition, which is the unexpected technical effect of the invention. Compared with the condition that the surface of the iron core 1 is completely processed, the electromagnetic attraction force is increased, and the effect of improving the electromagnetic attraction force by 34% -43% is achieved under the same voltage condition. In addition, compared with the situation that the electromagnetic attraction force with the same size is needed in the whole surface treatment, the coil needed by the whole electromagnetic device after the iron core 1 is used is changed from the original 0.052 wire diameter 4000 turns to the current 0.05 wire diameter 4000 turns, so that the whole volume can be reduced, and the space is saved; the power consumption of the electromagnetic device is reduced by 9.2%, and energy is saved; these are also an unexpected technical effect.
When the iron core 1 processed by the method is applied to an electromagnetic component of a jacquard machine, the operation requirement of the ultrahigh-speed jacquard machine can be met, the interference among needles during needle selection control is reduced, and the stability of the performance of the electronic jacquard machine can be kept.
The present embodiment also includes an iron core 1 for an electromagnetic device, and the iron core 1 is prepared by the method for processing the iron core 1 for an electromagnetic device.
The embodiment further comprises an electromagnetic device, which comprises the iron core 1 and a coil, wherein the coil is wound on the iron core 1.
This embodiment also comprises a jacquard electromagnetic assembly comprising the electromagnetic device described above.
The present embodiment can also be applied to other electromagnetic devices, and the shape of the iron core 1 can be any shape such as a rectangular parallelepiped, a cube or an irregular shape.
The embodiments of the present invention are merely illustrative, and not restrictive, of the scope of the claims, and other substantially equivalent alternatives may occur to those skilled in the art and are within the scope of the present invention.
Claims (10)
1. A processing method of an iron core for an electromagnetic device is characterized in that the iron core is subjected to local nitriding treatment; the iron core is provided with an impact surface which is contacted with or collided with other components when in use; the local nitriding treatment comprises nitriding treatment on the collision surface or nitriding treatment on the collision surface extending for a selected length from the collision surface; the iron core comprises a first supporting rod, the first supporting rod is provided with two ends along the length direction, and the end faces of the two ends are collision faces; the iron core is I-shaped in structure and comprises a first support rod, a second support rod and a connecting rod, wherein two ends of the connecting rod are respectively connected with the middle part of the first support rod and the middle part of the second support rod; the first supporting rod is provided with two ends along the length direction, and the end surfaces of the two ends are collision surfaces; the length of the first supporting rod is greater than that of the second supporting rod; the length selected by extension is the difference between the length of the first strut and the length of the second strut; the specific steps of the local nitriding treatment comprise: the method comprises the following steps that firstly, two first planes and two second planes which are arranged oppositely are arranged in the thickness direction of an iron core, a first outer edge is arranged in the width direction of a first supporting rod, a second outer edge is arranged in the width direction of a second supporting rod, a plurality of iron cores are arranged along a straight line to form an assembly, the first planes and the second planes of two adjacent iron cores are in contact with each other, the two adjacent iron cores are horizontally turned over by 180 degrees by taking the arranged straight line as an axis, in the two adjacent iron cores, the first outer edge of one iron core and the second outer edge of the other iron core are arranged in an aligned mode, and collision faces of the first supporting rod of one iron core and the first supporting rod of the other iron core are arranged in an aligned mode.
2. The method of treating an iron core for an electromagnetic device according to claim 1, wherein the surface area of the iron core subjected to the local nitriding treatment is 0.1 to 50% of the total surface area of the iron core.
3. The method of treating an iron core for an electromagnetic device according to claim 1 or 2, wherein the surface area of the iron core subjected to the partial nitriding treatment is not more than 5% of the total surface area of the iron core.
4. The method of processing a core for an electromagnetic device according to claim 1, wherein the width of the second leg bar is larger than the width of the first leg bar.
5. The method of claim 1, wherein the second leg bar has two end faces in a longitudinal direction, and the nitriding treatment portion of the core further includes the end faces of the two ends of the second leg bar or extends from the end faces by a selected length.
6. The method of claim 1, wherein the step of locally nitriding comprises:
covering the end faces of the connecting rods in the thickness direction in the assembly and the end faces of the two outermost iron cores in the width direction of the connecting rods;
and step three, nitriding the assembly obtained in the step two.
7. The method of treating an iron core for an electromagnetic device according to claim 1, wherein the nitriding treatment is a liquid nitriding treatment, a gas nitriding treatment, or an ion nitriding treatment.
8. A core for electromagnetic devices, characterized in that it is produced by a method of treating a core for electromagnetic devices according to any one of claims 1 to 6.
9. An electromagnetic device, comprising: a core and coil as recited in claim 8, wherein the coil is wound around the core.
10. A jacquard electromagnetic assembly comprising an electromagnetic device according to claim 9.
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| CN201910502474.9A CN110323054B (en) | 2019-06-11 | 2019-06-11 | Method for processing iron core for electromagnetic device, iron core, and electromagnetic device |
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| CN201910502474.9A CN110323054B (en) | 2019-06-11 | 2019-06-11 | Method for processing iron core for electromagnetic device, iron core, and electromagnetic device |
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| CN110323054B true CN110323054B (en) | 2021-10-08 |
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| EP1179603B1 (en) * | 2000-08-08 | 2011-03-23 | Nippon Steel Corporation | Method to produce grain-oriented electrical steel sheet having high magnetic flux density |
| CN202247170U (en) * | 2011-10-18 | 2012-05-30 | 西安伊目气动元件有限责任公司 | Novel-structured X-shaped yarn stopper pin of weft accumulator |
| CN208284330U (en) * | 2018-02-07 | 2018-12-25 | 吉林省送变电工程有限公司 | A kind of magnetic core of transformer |
| CN208440685U (en) * | 2018-06-05 | 2019-01-29 | 烟台环球金属热处理有限公司 | A kind of glow discharge nitriding tooling of magnetic alloy thin slice I-shaped part |
| CN109440058B (en) * | 2018-11-29 | 2020-08-11 | 中国科学院宁波材料技术与工程研究所 | Nitrogen-containing iron-based amorphous nanocrystalline magnetically soft alloy and preparation method thereof |
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