CN220717360U - Mechanical scoring roller for oriented silicon steel - Google Patents
Mechanical scoring roller for oriented silicon steel Download PDFInfo
- Publication number
- CN220717360U CN220717360U CN202320408377.5U CN202320408377U CN220717360U CN 220717360 U CN220717360 U CN 220717360U CN 202320408377 U CN202320408377 U CN 202320408377U CN 220717360 U CN220717360 U CN 220717360U
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- roller
- tooth
- silicon steel
- scoring
- oriented silicon
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- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 37
- 239000000956 alloy Substances 0.000 claims description 4
- 238000010147 laser engraving Methods 0.000 claims description 3
- 241001131688 Coracias garrulus Species 0.000 description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 25
- 230000005381 magnetic domain Effects 0.000 description 15
- 229910052742 iron Inorganic materials 0.000 description 11
- 238000007670 refining Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Abstract
The utility model provides an oriented silicon steel mechanical scoring roller, which comprises a roller body, wherein scoring teeth are arranged on the roller surface of the roller body; wherein, the nick teeth are arranged on the roller surface of the roller body in a herringbone structure along the axial direction of the roller body; and the longitudinal section of the notch tooth is in a trapezoid structure. The mechanical scoring roller for the oriented silicon steel can solve the problem that the consistency of the groove depth at the given position cannot be ensured by the conventional mechanical scoring roller.
Description
Technical Field
The utility model relates to the technical field of ferrous metallurgy, in particular to a mechanical scoring roller for oriented silicon steel.
Background
The heat-resistant magnetic domain refinement is a big hot spot of the current silicon steel production technology, and the magnetic domain is refined by utilizing the free magnetic charges generated at the groove, so that the iron loss can be reduced, and the quality of the silicon steel product is improved. The current magnetic domain refining technology includes mechanical scoring, chemical etching, plasma irradiation, etc.
The most widely used technique for refining magnetic domains is laser scoring, but the silicon steel sheet with the magnetic domains refined by laser scoring is only suitable for manufacturing laminated iron cores of transformers, such as large 500KV extra-high voltage transformers. This is because the effect of reducing the iron loss by laser scoring is immediately lost after the temperature of 500 ℃ or higher, and the iron loss increases sharply after annealing. For a large number of distribution transformers, high efficiency and miniaturization are required. However, the iron core of the wound iron core transformer (i.e., C-shaped iron core) is annealed at 850 ℃ after being manufactured and formed to eliminate stress, so that a silicon steel sheet with a refined magnetic domain through laser scoring cannot be used.
The mechanical scoring refining magnetic domain technology has heat resisting effect, and the belt material passes between the scoring roller (i.e. the scoring roller) and the working roller (or the supporting roller), and has certain pressure to the scoring roller, and the tooth edge of the scoring roller leaves tooth mark or groove on the belt material.
The tooth-engraving roller needs to be higher in hardness than the strip, and is made of materials such as hard alloy, and the processing difficulty is extremely high; in addition, because the tooth form size is small, the required precision cannot be achieved by the existing grinding machine, lathe, gear machining equipment and the like, and especially the tooth height is limited by the machining space, and the millimeter-sized height cannot be machined, for example, the application number is as follows: 201420748101.2 the patent provides a toothed roll suitable for oriented silicon steel heat-resistant magnetic domain refining device, because there is not restriction to the tooth height, when nicking the strip, the pressure that exerts influences the slot degree of depth greatly, can't guarantee the uniformity of slot degree of depth, consequently improves the iron loss effect difference too big, and strip is not even in both longitudinal and transverse magnetism.
Based on the foregoing, there is a need for a mechanical scoring device that ensures uniformity of groove depth at each location of the strip.
Disclosure of Invention
In view of the above problems, the present utility model is to provide an oriented silicon steel mechanical scoring roller, so as to solve the problem that the uniformity of the groove depth of the given position cannot be ensured in the conventional mechanical scoring roller.
The utility model provides an oriented silicon steel mechanical scoring roller which comprises a roller body, wherein scoring teeth are arranged on the roller surface of the roller body; wherein, the nick teeth are arranged on the roller surface of the roller body in a herringbone structure along the axial direction of the roller body; and, in addition, the processing unit,
the longitudinal section of the notch tooth is in a trapezoid structure.
In addition, the scoring teeth are preferably engraved on the roll surface by a laser engraving machine.
Furthermore, it is preferable that the intermediate position of the scoring teeth is aligned with the center line of the roll surface.
Further, it is preferable that the pitch angle of the notch teeth is between 0 ° and 30 °.
Furthermore, it is preferable that the notch teeth are provided on the roll surface in at least two in the circumferential direction of the roll body; and, in addition, the processing unit,
the scoring teeth are distributed on the roller surface at equal intervals along the circumferential direction of the roller body.
In addition, the tooth pitch of the notched teeth is preferably between 2 and 6 mm.
In addition, the tooth top width of the notched tooth is between 20 and 50 mu m, and the tooth bottom width is between 30 and 60 mu m;
in addition, the preferable structure is that the tooth top width/tooth bottom width of the notched tooth is equal to or more than 0.35.
In addition, the tooth height of the notched tooth is preferably 8 to 30 μm.
In addition, the roller body is preferably made of hard alloy.
Compared with the prior art, the mechanical scoring roller of the oriented silicon steel according to the utility model comprises the following components
The beneficial effects are that:
according to the oriented silicon steel mechanical scoring roller provided by the utility model, the scoring teeth which are in a herringbone structure along the axial direction of the roller body are arranged on the roller surface, and the longitudinal sections of the scoring teeth are arranged to be in a trapezoid structure, so that herringbone groove lines with preset sizes can be carved on the surface of a strip; the grooves at each position on the surface of the material are uniform in shape and size, the magnetic domains are thinned uniformly, the eddy current loss is reduced uniformly as a whole, and the notch can resist annealing at 850 ℃ so that the total iron loss is reduced by more than 10%.
Drawings
Other objects and results of the present utility model will become more apparent and readily appreciated by reference to the following description and claims in conjunction with the accompanying drawings and a more complete understanding of the utility model.
In the drawings:
FIG. 1 is a top view of a roll surface of an oriented silicon steel mechanical scoring roll provided in accordance with an embodiment of the present utility model;
FIG. 2 is an enlarged side view, partially in section, of an embodiment of the present utility model providing a mechanical scoring roller for oriented silicon steel;
FIG. 3 is a schematic diagram of the scoring depth control of a mechanical scoring roller of oriented silicon steel according to an embodiment of the present utility model;
reference numerals: scoring roller 1, strip 2, work roller 3.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
It should be noted that, in the technical description of the present utility model, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 shows a top view structure of a roll surface of an oriented silicon steel mechanical scoring roll according to an embodiment of the present utility model, fig. 2 shows a side view partial cross-sectional enlarged structure of an oriented silicon steel mechanical scoring roll according to an embodiment of the present utility model, and fig. 3 is a schematic diagram of controlling a scoring depth of an oriented silicon steel mechanical scoring roll according to an embodiment of the present utility model.
As can be seen from fig. 1 to 3, the mechanical scoring roller for oriented silicon steel provided by the utility model comprises a roller body 1 with a cylindrical main body, wherein in order to score the surface of a strip 2, outwardly protruding scoring teeth are arranged on the roller surface of the roller body 1, the strip 2 is clamped between the roller body 1 and a working roller 3 (or a supporting roller), and when the roller surface of the roller body 1 presses on the surface of the strip 2, corresponding grooves are scored on the surface of the strip 2 by the scoring teeth, so that the refinement of heat-resistant magnetic domains of the strip 2 is realized, the iron loss is reduced, and the quality of silicon steel products is improved.
Specifically, in order to make the shape and the size of each position of the groove formed on the strip 2 uniform, the mechanical notch roller for oriented silicon steel provided by the utility model is characterized in that notch teeth are arranged on the roller surface to be in a herringbone structure along the axial direction of the roller body 1; and the middle position of the notch tooth is aligned with the middle line of the roller surface, and the longitudinal section of the notch tooth is arranged in a trapezoid structure. The V-shaped notch teeth with the trapezoid-shaped longitudinal section can increase the relative contact area of the notch teeth to the strip 2 in the notch process of the strip 2, can improve the symmetry of the notch teeth, ensure the bilateral symmetry and uniform size of grooves at all positions of the strip 2, ensure uniform magnetic domain refinement and integrally and uniformly reduce eddy current loss.
In addition, in order to further improve the magnetic domain refinement uniformity of the strip 2, the notch teeth can be engraved on the roller surface by a laser engraving machine, the engraved positions have smooth and round surfaces, the engraving deformation and internal stress are reduced, and no surface treatment is needed; in addition, the notched teeth formed by the method have high tooth shape dimension precision, and the notched teeth with high precision are used for mechanically notched the strip 2, so that the high dimensional precision of the notched grooves and the strong consistency of the shapes of the grooves can be further ensured, the homogenization of the heat-resistant refined magnetic domains of the oriented silicon steel is improved, and the formed notched teeth can resist annealing at 850 ℃, so that the total iron loss is reduced by more than 10 percent, and the uniformity of refining the magnetic domains is improved.
In addition, the magnetic domain refinement uniformity of the strip 2 can be further improved by the following method; for example, a plurality of (at least two) scoring teeth are provided on the roll surface in the circumferential direction of the roll body 1; the scoring teeth are arranged on the roll surface at equal intervals along the circumferential direction of the roll body 1. In this way, equidistant grooves can be formed on the strip 2, thereby further improving the domain refinement uniformity of the strip 2.
In the actual manufacturing process, the helix angle beta of the notch teeth is usually set between 0-30 degrees, and the middle position of the notch teeth is aligned with the center line of the roll surface, so that the axial force applied to the two sides of the strip 2 can be consistent through the arrangement, and the strip 2 is prevented from deviating. In addition, the pitch d of the scored teeth is generally set between 2 and 6mm, the tooth height h is generally set between 8 and 30 μm, the tooth top width a is generally set between 20 and 50 μm, and the tooth bottom width b is generally set between 30 and 60 μm; by this arrangement, chevron-shaped equidistant grooves with a width of between 20 and 120 μm and a depth of between 6 and 30 μm can be engraved on the surface of the strip 2, and in actual scoring, the depth of the engraved grooves can be ensured to be equal to or less than the tooth height, regardless of the increase of the scoring pressure.
In addition, the tooth top width a of the notched tooth is usually set to 20 to 50 μm, the tooth bottom width b is usually set to 30 to 60 μm, and the tooth top width/tooth bottom width of the notched tooth is required to be not less than 0.35, by which the improvement of the magnetic effect after the scoring can be optimized. In addition, in order to ensure the strength of the scoring roller, the roller body 1 is made of hard alloy materials.
The mechanical scoring of oriented silicon steel provided by the utility model is further described below in connection with several specific examples.
Example 1
The surface of the engraved part is smooth and round, the engraving deformation and internal stress are reduced, surface treatment is not needed, the engraved tooth is a herringbone tooth, the spiral angle beta of the herringbone tooth is=7.5 degrees, the tooth pitch d is=4 mm, the tooth height h is=16 mu m, the tooth end face is trapezoidal, the tooth top width a is=20 mu m, the tooth bottom width b is=30 mu m, a herringbone equidistant groove similar to a trapezoid groove, the top width is 25 mu m, the bottom width is 40 mu m, the groove depth is 16 mu m, the groove depth is less than or equal to the tooth height, the engraved equidistant groove is 4mm, the shape and the size of the engraved groove are completely uniform, the belt is annealed for 3min at 840 ℃, the iron loss reduction rate is 12%, and the engraved groove is uniform on the whole plate surface.
Example 2
The surface of the engraved part is smooth and round, the engraving deformation and internal stress are reduced, surface treatment is not needed, the engraved tooth is a herringbone tooth, the helix angle beta of the herringbone tooth is=12.5 degrees, the tooth pitch d is=5 mm, the tooth height h is=12 mu m, the tooth end face is trapezoidal, the tooth top width a is=30 mu m, the tooth bottom width b is=50 mu m, a herringbone equidistant groove similar to a trapezoid groove, the top width is 40 mu m, the bottom width is 60 mu m, the groove depth is 12 mu m, the groove depth is less than or equal to the tooth height, the engraved equidistant groove is 5mm, the shape and the size of the engraved groove are completely uniform, the belt is annealed for 3min at 840 ℃, the iron loss reduction rate is 10% and the belt is uniform on the whole plate surface.
Example 3
The surface of the engraved part is smooth and round, the engraving deformation and internal stress are reduced, surface treatment is not needed, the engraved tooth is a herringbone tooth, the helix angle beta of the herringbone tooth is=15°, the tooth pitch d=3 mm, the tooth height h=10 μm, the tooth end face is trapezoidal, the tooth top width a=30 μm and the tooth bottom width b=50 μm, a herringbone equidistant groove similar to a trapezoid groove, the top width is 35 μm, the bottom width is 60 μm and the groove depth is 10 μm is engraved on the strip, the engraved groove depth is less than or equal to the tooth height, the engraved equidistant groove with the length of 5mm is completely uniform in shape and size, the strip is annealed for 3min at 840 ℃, the iron loss reduction rate is 10%, and the engraved groove is uniform in the whole plate surface.
The oriented silicon steel mechanical scoring roller according to the present utility model is described above by way of example with reference to fig. 1 to 3. However, it will be appreciated by those skilled in the art that various modifications may be made to the oriented silicon steel mechanical scoring roller set forth in the foregoing disclosure without departing from the teachings of the present utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (10)
1. The mechanical scoring roller for the oriented silicon steel is characterized by comprising a roller body, wherein scoring teeth are arranged on the roller surface of the roller body; wherein, the nick teeth are arranged on the roller surface of the roller body in a herringbone structure along the axial direction of the roller body; and, in addition, the processing unit,
the longitudinal section of the notch tooth is in a trapezoid structure.
2. The mechanical scoring roller of oriented silicon steel according to claim 1,
the notch teeth are engraved on the roller surface by a laser engraving machine.
3. The mechanical scoring roller of oriented silicon steel according to claim 2,
the intermediate position of the scoring teeth is aligned with the midline of the roll surface.
4. The mechanical scoring roller of oriented silicon steel according to claim 3,
the helical angle of the notch teeth is between 0 and 30 degrees.
5. The mechanical scoring roller of oriented silicon steel according to claim 2,
at least two scoring teeth are arranged on the roller surface along the circumferential direction of the roller body; and, in addition, the processing unit,
the scoring teeth are distributed on the roller surface at equal intervals along the circumferential direction of the roller body.
6. The mechanical scoring roller of oriented silicon steel according to claim 5,
the tooth pitch of the notch teeth is between 2 and 6 mm.
7. The mechanical scoring roller of oriented silicon steel according to any one of claim 2 to 6,
the tooth top width of the notched tooth is 20-50 mu m, and the tooth bottom width is 30-60 mu m.
8. The mechanical scoring roller of oriented silicon steel according to claim 7,
the tooth top width/tooth bottom width of the notched tooth is more than or equal to 0.35.
9. The mechanical scoring roller of oriented silicon steel according to claim 8,
the tooth height of the notch tooth is 8-30 mu m.
10. The mechanical scoring roller of oriented silicon steel according to claim 1,
the roller body is made of hard alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320408377.5U CN220717360U (en) | 2023-03-07 | 2023-03-07 | Mechanical scoring roller for oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320408377.5U CN220717360U (en) | 2023-03-07 | 2023-03-07 | Mechanical scoring roller for oriented silicon steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220717360U true CN220717360U (en) | 2024-04-05 |
Family
ID=90497489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320408377.5U Active CN220717360U (en) | 2023-03-07 | 2023-03-07 | Mechanical scoring roller for oriented silicon steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220717360U (en) |
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2023
- 2023-03-07 CN CN202320408377.5U patent/CN220717360U/en active Active
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