Low-loss amorphous alloy ribbon and manufacturing equipment and method thereof

Abstract

A method of manufacturing an amorphous alloy ribbon having a score, the method comprising during a scoring operation, forming a score on a smooth amorphous alloy ribbon using a knife roll; wherein the knife roll is provided with a cylindrical main body, at least one spirally extending blade part is arranged on the surface of the main body, during the nicking operation, the knife roll is pressed against the amorphous alloy strip and rotates, the cutter head included angle of the blade part is in the range of 20-30 degrees, the nicking pressure is in the range of 5-8 g, and the nicking angle of the blade part is in the range of 20-30 degrees. An included angle ranging from 20 degrees to 60 degrees is formed between the extending direction of any position on the blade part and the advancing direction of the amorphous alloy strip.

Description

Technical Field

[0001] The invention relates to an amorphous alloy thin strip and a manufacturing method thereof, in particular to an amorphous alloy thin strip with appropriate magnetic domain refinement grooves on the surface. Background Art

[0002] Amorphous alloy materials have excellent properties such as high coercivity, high magnetic permeability, low saturation magnetic induction and high resistivity, and are widely used in the electronics, electric power and new energy industries. Amorphous alloy strips are often used in distribution transformers to reduce the no-load loss of distribution transformers by taking advantage of the low magnetic loss characteristics of amorphous alloys. In order to further reduce the abnormal eddy current loss (an important component of iron loss), linear or dot-shaped notches can be made on the surface of amorphous alloy strips to refine the magnetic domains and reduce the width of the magnetic domains. Due to the thinness, high hardness, low toughness and susceptibility to stress of amorphous alloy strips, it is difficult to use mechanical methods to form satisfactory notches on amorphous alloy strips in large-scale production. At present, major manufacturers mainly use laser scoring as the preferred method to reduce iron loss and improve amorphous alloy strips.

[0003] Japanese Patent Publication No. 3-32886 discloses a method for improving the magnetic properties of amorphous strips by laser scoring. The amorphous alloy strip is irradiated with a pulsed laser in the width direction, thereby locally melting the surface of the amorphous alloy strip, and then rapidly solidifying it to form amorphous spots arranged in a point array, so as to refine the magnetic domain.

[0004] During the laser scoring process, the high temperature overheating caused by laser irradiation will lead to phase explosion in the form of boiling and splashing, thus forming remelted materials and splashing materials in the scoring area, which will destroy the thickness uniformity and flatness of the scoring area, and the melted and recrystallized parts will also have an adverse effect on the performance of the strip. In particular, the melt produced by ablation and sputtering will inevitably and uncontrollably accumulate on both sides of the scoring groove, affecting the lamination factor of the subsequent manufactured products. In addition, the laser scoring method also generates high energy consumption, resulting in high production costs. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a mechanical manufacturing method for a low-loss amorphous alloy strip, which can produce a low-loss amorphous alloy strip with low excitation power, high flatness and energy saving.

[0006] In one embodiment, the present invention provides a method for manufacturing an amorphous alloy thin strip with notches, the method comprising: during a notching operation, using a knife roller to form notches on a smooth amorphous alloy strip; wherein the knife roller has a cylindrical body, and at least one spirally extending blade is provided on the surface of the body, and during the notching operation, the knife roller is pressed against the amorphous alloy strip and rotates, wherein the blade head angle of the blade is in the range of 20°-30°, the notching pressure is in the range of 5-8g, and the extension direction of any point on the blade has an angle in the range of 20-60° with the travel direction of the amorphous alloy strip.

[0007] In another embodiment, the present invention provides another method for manufacturing an amorphous alloy thin strip with notches, the method comprising forming notches on a smooth amorphous alloy strip using a knife roller during a notching operation; wherein the knife roller has a cylindrical body, and at least one blade extending laterally is provided on the surface of the body, and during the notching operation, the knife roller is pressed against the amorphous alloy strip and rotates around a central axis while moving in a direction perpendicular to the direction of travel of the strip, wherein during the notching operation, the pressure at the blade is 0.1-1 MPa / cm 2 within the range.

[0008] In one embodiment, the present invention provides a manufacturing device for forming notches on an amorphous alloy strip, the device comprising: a feeding unit for feeding a strip coil; a length measuring mechanism for measuring the length of the strip; a tension detecting mechanism for detecting the tension of the strip; a tension adjusting mechanism for adjusting the tension of the strip; a process correction mechanism for ensuring that the strip does not deviate during operation; a notching mechanism for notching the strip; and a receiving mechanism for receiving the amorphous alloy strip that has been notched; wherein the notching mechanism comprises a knife roller advancing mechanism, a knife roller and an anvil, the knife roller having a cylindrical main body and at least one blade protruding from the surface of the main body and extending circumferentially or spirally on the surface of the main body.

[0009] The amorphous alloy thin strip with notches produced according to the present invention has the advantage of small protrusions on both sides of the notch grooves, so that the lamination factor of the iron core made of the same is improved, and the loss and excitation power can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A mechanical scoring overall device according to the invention is schematically shown.

[0011] Figure 2a and 2b A side view of a scoring mechanism in the mechanical scoring integrated device according to the present invention is schematically shown.

[0012] Figure 3 A transverse knife roller according to the invention is schematically shown.

[0013] Figure 4a and 4b A spiral cutter roller according to the invention is schematically shown.

[0014] Figure 5a-5e The various scoring arrangements on the strip are schematically shown, wherein: Figure 5a It is a continuous linear trace. Figure 5b It is a discontinuous linear trace. Figure 5c and Figure 5d It is a series of discontinuous linear traces arranged in a staggered manner. Figure 5e It is a series of discontinuous linear traces with an inclination angle.

[0015] Figure 6 The scored area of ​​the strip surface is schematically shown. DETAILED DESCRIPTION

[0016] The specific contents of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. However, it should be understood that the described embodiments are merely exemplary. Those of ordinary skill in the art can make changes based on the embodiments of the present invention without departing from the scope of protection claimed in the present invention.

[0017] The invention provides a method for forming scratches on the surface of an amorphous alloy thin strip by using a mechanical scratching method to refine magnetic domains. Figure 1 The overall apparatus of the mechanical scoring method according to the present invention is schematically shown.

[0018] Figure 1 The overall equipment shown in the figure is controlled by an electronic control system and includes a material unwinding unit 1, a length measuring mechanism 2, a tension detecting mechanism 3, a tension adjusting mechanism 4, a process deviation correcting mechanism 5, a notching mechanism 6 and a material receiving mechanism 7.

[0019] During the operation of the equipment, the strip coil is unloaded by the unloading mechanism 1. The strip coil material unloaded by the unloading mechanism 1 passes through the process roller and enters the length measuring mechanism 2. The length measuring mechanism 2 is mainly used to measure the length of the strip material, especially when a transverse knife roller is used. After each notch, the strip material is controlled to travel a certain length before stopping for the next notch.

[0020] The main structure of the length measuring mechanism 2 includes three rollers. The two lower rollers are steel rollers, namely the first redirecting roller A and the second redirecting roller B. The upper roller is a length measuring roller with a rubber surface. The central axis of the length measuring roller is connected to an encoder to measure the travel length of the strip.

[0021] The strip enters the first redirecting roller A from below the first redirecting roller A, then extends upward to bypass the length measuring roller, then goes downward to bypass the lower left of the second redirecting roller B, and finally leaves the length measuring mechanism 2 from the right side of the second redirecting roller B.

[0022] In order to ensure the accuracy of strip measurement, it is necessary to ensure that the length measuring roller and the strip move synchronously without slipping. To this end, in addition to designing the length measuring roller to be made of rubber material to increase friction, the roller passing area of ​​the strip and the length measuring roller can also be increased. According to a preferred embodiment, the spacing between the first redirecting roller A and the second redirecting roller B is designed to be smaller than the diameter of the length measuring roller, so that the strip bypassing the length measuring roller can cover most of the circumference of the length measuring roller, thereby further increasing the friction force and improving the accuracy of measuring the length of the strip.

[0023] The strip coming out of the length measuring mechanism 2 passes through the tension detection mechanism 3 and the tension adjustment mechanism 4 in sequence. The tension adjustment mechanism 4 adjusts the tension of the strip according to the feedback result of the tension detection mechanism 3 on the strip. Tension detection and tension adjustment can bring the following advantages: avoid the strip from breaking due to excessive tension; ensure that the strip is tightened on the cutting board of the scoring mechanism when the strip enters the scoring station later, which is convenient for the scoring operation; prevent the strip from having too little tension and insufficient friction between the strip and the rollers, resulting in inaccurate length measurement by the length measuring mechanism 2.

[0024] The process deviation correction mechanism 5 ensures that the strip is in a suitable processing position without deviation when entering the notching mechanism 6, thereby ensuring the notching quality.

[0025] After being scored in the scoring mechanism 6, the strip enters the receiving mechanism 7. The receiving mechanism 7 includes a guide roller system and a receiving tray. The guide roller system includes a floating roller to ensure the tension of the strip in the receiving mechanism and the tension of the scored strip in the scoring mechanism.

[0026] Figure 2a and Figure 2b The notching mechanism 6 according to the present invention is specifically shown. The notching mechanism 6 includes a knife roller travel mechanism, a knife roller and an anvil. Figure 2aAs shown, the knife roller travel mechanism includes at least two electric cylinders 601 for controlling the up and down movement of the knife roller, which are preferably arranged on the periphery to ensure that the lower knife roller is evenly stressed and does not deviate during notching. A linear motor 602 is fixed below the electric cylinder 601, and a knife roller 603 in the form of a pressure roller is fixedly mounted on the travel component of the linear motor 602. During the notching operation, the amorphous alloy strip is laid on the anvil 604, and the travel component of the linear motor 602 drives the knife roller 603 to move linearly from its initial position along the travel direction, and continuously rolls at least one side of the amorphous alloy strip to form a mechanical notch on the strip surface. Subsequently, the notched amorphous strip portion moves away from the notching mechanism, and the knife roller 603 returns to the initial position along the travel component of the motor for the next notching operation. As shown in FIG. Figure 2b As shown, process rollers 605 are respectively arranged on both sides of the anvil 604, and the upper end faces of the outer diameter of the process rollers 605 are in the same plane as the upper surface of the anvil, thereby ensuring that the strip is tensioned and the scoring is accurate during the scoring process, while avoiding the strip from rubbing against the outer edges of both sides of the anvil, reducing the risk of the strip being scratched.

[0027] In one embodiment, the knife roller 603 according to the present invention is as follows Figure 3 The transverse knife roller 610 shown in FIG. 6 is a cylindrical body 612 having a central axis 611. The surface of the body 612 is circumferentially provided with at least one blade 613 in the form of a protruding ridge. Figure 3 In the embodiment shown in , the blade 613 extends transversely on the body 612, that is, the center plane passing through the end of the blade 613 is perpendicular to the axis 611. When installed in the notching mechanism 6, the axis 611 of the transverse knife roller 610 can form an angle of less than 45° with the traveling direction of the strip as required. Therefore, when the traveling component of the linear motor is started, the transverse knife roller 610 will be driven to move linearly in the traveling direction perpendicular to the casting direction of the strip. At the same time, the transverse knife roller 610 is driven to rotate around the central axis 611 under the interaction with the strip, and then the strip located stationary on the anvil below is rolled, so that the blade 613 squeezes the strip material, thereby generating notches on the surface of the strip.

[0028] In another embodiment, the knife roller 603 according to the present invention is used as follows Figure 4a and 4b The spiral cutter roller 620 shown in FIG. 6 is a cylindrical body 622 having a central axis 621. The surface of the body 622 is provided with at least one blade 623 in the form of a protruding ridge. Figure 4a and 4bIn the embodiment shown in , the blade 623 extends spirally on the surface of the main body 622. The spiral cutter roller 620 is installed in the scoring mechanism 6 in such a way that its axis 621 is perpendicular to the traveling direction of the strip. Thus, when the traveling part of the linear motor is started, the spiral cutter roller 620 will be driven to move in a traveling direction parallel to the strip casting direction, and at the same time, it will be driven to rotate around the central axis 621, and then the strip below will be rolled, so that the blade 623 squeezes the strip material, thereby generating a score on the surface of the strip.

[0029] The spiral cutter roller can also be a passive roller. In this embodiment, the scoring mechanism may not have a linear motor. During the scoring operation, the electric cylinder 601 is pressed down, the spiral cutter roller squeezes the strip material, and is therefore driven by the forward-moving strip material, thereby being driven to rotate along the strip surface, leaving a score on the strip surface that is at a certain angle to the strip width direction. This driven mode of the spiral cutter roller is preferred.

[0030] The extension direction of the blade at any point on the spiral cutter roller 620 may have an angle of 0-90° with the direction of strip travel. The direction of strip travel is perpendicular to the axis of the spiral cutter roller. When the angle is less than 20°, the follower effect of the spiral cutter roller is poor, and it is easy to slip, resulting in unstable notching. In the case of a larger angle, although the notching operation is stable, the cutter roller will be subject to greater wear; in addition, a larger angle between the blade and the direction of strip travel will cause the notch formed on the surface of the strip to have a larger angle with the width direction of the strip, which is not conducive to the effect of notching to refine the magnetic domain. Therefore, preferably, the angle is 20-60°, more preferably, the angle is 20-45°, and more preferably, the angle is 20°.

[0031] The mechanical scoring can be continuous or discontinuous dot-shaped or linear scoring. In view of processing efficiency, preferably, the scoring is a continuous or discontinuous linear scoring series.

[0032] Figure 3 The horizontal knife roller and Figure 4a and 4b The blades of the spiral cutter rolls shown in the drawings are all continuous, so that continuous linear cuts can be formed on the strip surface. However, the blades can also be discontinuous, so as to form discontinuous linear cuts.

[0033] The cutter roll can also be made of a plurality of cutter roll blocks that can be disassembled and installed in a grouping block. In this case, the cutter roll part that is worn or damaged can only be disassembled and polished, repaired or replaced without changing the whole cutter roll.

[0034] Figure 5a-5eSome examples of notch arrangement patterns that can be achieved on the strip by the transverse cutter roller 610 and the spiral cutter roller 620 are shown. According to the requirements for the notch arrangement pattern on the strip, a plurality of blades spaced apart in the axial direction or the circumferential direction may be provided on the transverse cutter roller 610, or a plurality of transverse cutter rollers with blades may be fixedly installed side by side on the travel part of the linear motor 602, wherein the blade of each transverse cutter roller may be aligned or staggered with the blade of other transverse cutter rollers as required. The spiral cutter roller 620 may also be provided with a plurality of blades (such as Figure 4b The axial length of the spiral cutter roller can be set as required. Usually, the axial length of the cutter roller is greater than the width of the strip.

[0035] Figure 5a-5d The arrangement of the scores is shown in which the score extension direction is perpendicular to the strip running direction.

[0036] exist Figure 5a-Figure 5b In the embodiment, the spacing between adjacent notches is preferably 1-30 mm, preferably 2 mm, more preferably 3 mm, and further preferably 5 mm. The length of the notches in the width direction of the amorphous alloy strip accounts for no less than 70%, preferably 100%. Figure 5b In the discontinuous linear scoring arrangement shown in , a discontinuous linear scoring column is formed by linear scoring segments. Assuming that the width of the amorphous alloy ribbon is D, the length of any scoring segment in the discontinuous linear scoring column is approximately d, and the number of scorings is m (m ≥ 1), then D ≥ dm. For such discontinuous linear scoring, each segment of the scoring may be inconsistent. This is because during the mechanical scoring process, inconsistent scoring pressure at various locations or tool wear and other factors will cause deviations in the length of each segment of the scoring, for example, causing some scoring segments to fail to completely scratch the surface of the amorphous alloy ribbon.

[0037] Discontinuous notches can also be arranged in a staggered manner, such as Figure 5c As shown. In a score column composed of one or more score segments extending along the width direction of the amorphous alloy thin strip, the distance h between adjacent score segments along the strip casting direction should not be too large, otherwise it will not play a role in magnetic domain refinement. Assuming that the spacing between adjacent score columns is H, and each group of score columns includes m score segments, the distance between adjacent score segments in each group of score columns along the strip casting direction should satisfy h≤H / 2(m-1); thereby, the spacing between the score segments in each group of score columns along the strip casting direction can be controlled not to be too large, and the uniformity of the arrangement of the score segments can be ensured.

[0038] Under the condition of satisfying the above formula, each section of the non-continuous linear score can be arranged arbitrarily. Figure 5d Another arrangement is shown in FIG.

[0039] Figure 5eThe arrangement of non-continuous linear scorings in which the scorings are at an angle to the strip casting direction is shown, which can be implemented on the strip by, for example, a spiral cutter roller 620. Each scoring segment in the non-continuous linear scoring can be inclined. Preferably, the angle r between each scoring segment and the strip casting direction is greater than 45°, preferably not less than 70°; preferably not less than 80°. In addition, the angle R between the line connecting the end points on one side of the strip and the end points on the other side and the strip casting direction is greater than 45°, preferably greater than 80°, and further preferably 90°. And ∠R≤∠r.

[0040] The mechanical scoring roller according to the present invention is made of high-hardness materials such as high-speed steel, ceramic steel, and tungsten carbide steel. The method according to the present invention is applicable to Fe-based amorphous alloy strips of various compositions. The amorphous alloy strip can be a thin strip that has not been cut after casting (for example, a strip roll), or a thin strip that has been cut into a desired size after casting. Preferably, the thickness of the amorphous alloy strip is 24-30 μm.

[0041] Figure 6 FIG. 2 shows the morphology of an amorphous alloy strip after being scored using the mechanical scoring method according to the present invention. In the mechanical scoring process of the present invention, the blade of the knife roller presses on the surface 800 of the strip to form a scoring groove 801, which usually also causes material accumulation at the outer edge of the scoring groove 801, resulting in the following Figure 6 The protrusion 802 is shown. If there is a large protrusion on at least one side of the notched groove, the lamination factor will be seriously affected when the strip is used to make transformer cores and other devices in the future, affecting the transformer design magnetic density. Generally, when the height of the protrusion is less than 0.5μm, it can be regarded as a micro protrusion; when the height of the protrusion is greater than 0.5μm, it is regarded as a large protrusion, which will have a non-negligible adverse effect on the performance of the strip.

[0042] In order to form effective notches, the pressure at the contact point between the blade of the knife roller and the strip should be between 0.1-1.5 MPa / cm 2 Preferably, the blade pressure of the blade roller at the contact point with the strip is set at 0.36-0.56 MPa / cm 2 In the range of 0.4 MPa / cm 2 , in order to better control the height of the protrusions and the width and depth of the notches.

[0043] Table 1 below shows that the pressure at the contact point between the blade of the tungsten steel spiral cutter roller and the strip is 0.1-1.5 MPa / cm 2 In the range of , the blade tip angle is 8°-82°, and the notch morphology measurement results are obtained when the spacing h is 15 mm and the angle R with the strip casting direction is 70°.

[0044]

[0045]

[0046]

[0047] From the table above, it can be seen that when the blade angle is between 20° and 30°, and the notch pressure of the blade is set at 0.36-0.56 MPa / cm 2 Within the range of , the edge of the notched groove can be slightly raised to obtain the best surface morphology.

[0048] Table 2 below shows the loss values ​​of the scored tapes for the aforementioned portion of the experiments.

[0049]

[0050]

[0051] As can be seen from the table above, the scored tape with micro protrusions has lower loss than the scored tape with large protrusions.

[0052] When a horizontal knife roll is used, the pressure on both sides of the blade is roughly the same during notching, so it is easier to control the bulge, but it is still necessary to select appropriate parameters to avoid excessive bulge. The present invention proposes to set the pressure at the blade to 0.1-1.5MPa / cm by controlling the pressure. 2 ; preferably 0.4MPa / cm 2 , the height of the protrusions on both sides of the notch groove can be no more than 0.5μm, or even no protrusions.

[0053] The following table lists the parameters of the mechanically scored amorphous alloy ribbon and the laser scored amorphous alloy ribbon prepared according to the method of the present invention.

[0054] The following table shows the comparison of some parameters of the mechanical scoring belt with micro-protrusions obtained by the mechanical scoring method of the present invention and the laser scoring belt obtained by the conventional laser scoring method using the same FeSiBC series amorphous alloy belt as the substrate, wherein the mechanical scoring belt of the embodiment and the laser scoring belt of the comparative example have the same scoring arrangement, and the scoring spacing is 15mm; the scoring depth is in the range of 3-4.5μm, preferably the scoring depth is 3.5μm, and the scoring width is in the range of 27-33μm, preferably the scoring width is 28μm. Within this range, the change of the depth and width of the scoring does not affect the performance of the scoring belt, therefore, the mechanical scoring belt and the laser scoring belt used in the experiment are preferably selected with the above-mentioned specifications of the scoring.

[0055]

[0056]

[0057] It can be seen from the above table that the lamination factor of the mechanically scored belt according to the present invention is better than that of the laser scored belt with the same scoring arrangement, and has a core loss that is approximately equivalent to that of the laser scored belt.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for manufacturing an amorphous alloy thin strip having notches, characterized in that: The method includes forming scores on a smooth amorphous alloy strip using a knife roll during a scoring operation; The knife roller has a cylindrical body, and at least one spirally extending blade is provided on the surface of the body. During the scoring operation, the knife roller presses against the amorphous alloy strip and rotates. The blade angle of the blade is in the range of 20°-30°, and the notch pressure of the blade is in the range of 0.1-1.5 MPa / cm 2 Within the range of, the extension direction of any point on the blade portion and the traveling direction of the amorphous alloy strip have an angle in the range of 20-60°.

2. The method according to claim 1, wherein: During the scoring operation, the knife roller is driven by a motor to move in a traveling direction parallel to the traveling direction of the amorphous alloy strip.

3. The method according to claim 1, wherein: During the scoring operation, the knife roller is driven to rotate by the amorphous alloy strip.

4. The method according to any one of claims 1 to 3, wherein: An extending direction of any point on the blade portion and a traveling direction of the amorphous alloy strip have an angle in the range of 20-45°.

5. The method according to any one of claims 1 to 3, wherein: An extending direction of any point on the blade portion forms an angle of 20° with a traveling direction of the amorphous alloy strip.

6. The method according to any one of claims 1 to 3, wherein: During the scoring operation, the pressure at the blade was between 0.36 and 0.56 MPa / cm 2 within the range.

7. The method according to claim 6, wherein: During the scoring operation, the pressure at the blade was 0.4 MPa / cm 2 .

8. A method for manufacturing an amorphous alloy thin strip having notches, characterized in that: The method includes forming scores on a smooth amorphous alloy strip using a knife roll during a scoring operation; The knife roller has a cylindrical body with at least one transversely extending blade portion provided on the surface of the body, and during the scoring operation, the knife roller is pressed against the amorphous alloy strip and rotates around a central axis while moving in a direction perpendicular to the direction of strip travel, During the scoring operation, the pressure at the blade is between 0.1 and 1.5 MPa / cm 2 within the range.

9. The method according to claim 8, wherein: During the scoring operation, the pressure at the blade was between 0.36 and 0.56 MPa / cm 2 within the range.

10. The method according to claim 9, wherein: During the scoring operation, the pressure at the blade was 0.4 MPa / cm 2 .

11. An amorphous alloy ribbon, wherein: The amorphous alloy thin strip has one or more continuous or discontinuous linear scratches formed on the surface of the amorphous alloy thin strip by using a knife roller.

12. The amorphous alloy strip according to claim 11, wherein: The protrusions on both sides of the notch are no higher than 0.5 μm.

13. The amorphous alloy strip according to claim 11 or 12, wherein: The extending direction of the notch is perpendicular to the casting direction of the amorphous alloy strip.

14. The amorphous alloy ribbon according to claim 13, wherein: The distance between adjacent notches is 1-30 mm.

15. The amorphous alloy ribbon according to claim 13, wherein: The extension length of the notch is greater than or equal to 70% of the width of the amorphous alloy ribbon.

16. The amorphous alloy ribbon according to claim 13, wherein: For a discontinuous linear score array formed by linear score segments, assuming that the width of the amorphous alloy ribbon is D, the length of any score segment in the discontinuous linear score array is d, and the number of scores is m (m≥1), then D≥dm.

17. The amorphous alloy ribbon according to claim 11, wherein: For non-continuous linear score columns formed by linear score segments, assuming that the spacing between adjacent score columns is H, each group of score columns includes m score segments, and the distance between adjacent score segments in each group of score columns along the strip casting direction satisfies h≤H / 2(m-1).

18. The amorphous alloy strip according to claim 11 or 12, wherein: A discontinuous linear score array is formed by the linear score segments, and an angle ∠r between each score segment and the strip casting direction is greater than 45°.

19. The amorphous alloy ribbon according to claim 18, wherein: The angle ∠R between the line connecting the end points on one side and the end points on the other side of the strip and the casting direction of the strip is greater than 45°, and ∠R≤∠r.

20. A manufacturing device for forming notches on an amorphous alloy strip, the device comprising: A discharging unit, which discharges the strip coil; A tension adjustment mechanism, which adjusts the tension of the strip; A process guide mechanism to ensure that the strip does not deviate during operation; and A scoring mechanism for performing a scoring operation on the strip; The scoring mechanism includes a knife roller travel mechanism, a knife roller and an anvil, wherein the knife roller has a cylindrical main body and at least one blade protruding from a surface of the main body and extending circumferentially or spirally on the surface of the main body.

21. The manufacturing apparatus according to claim 20, wherein: The manufacturing equipment also includes: A length measuring mechanism, which measures the length of the strip traveling; A tension detection mechanism, which detects the tension of the strip; The material receiving mechanism is used to coil up the amorphous alloy strip that has been scored.

22. The manufacturing apparatus according to claim 20, wherein: An extension direction of any point on the blade portion and the axis of the knife roller have an angle in the range of 30-70°.

Images