Composite laminated soft magnetic ribbon with controlled physical properties

Abstract

The purpose of the present invention is to provide a composite laminated soft magnetic ribbon laminated to combine the advantages of materials and to obtain maximum efficiency as magnetic components for transformers, motor cores, etc., considering the advantages and disadvantages of individual soft magnetic ribbons such as silicon steel plate ribbons, amorphous alloy ribbons, nanocrystalline alloy ribbons, etc.　Laminated soft magnetic ribbons, which are obtained by laminating identical-width pieces of a plurality of types of soft magnetic metal ribbons having different characteristics, including amorphous alloy ribbons and nanocrystalline alloy ribbons, are laminated in a plurality of levels and subsequently secured in place to produce a magnetic component as a composite laminated soft magnetic ribbon. Magnetic components of increased width are produced from composite laminated soft magnetic ribbons obtained by: stacking a plurality of levels of laminated soft magnetic ribbons, which are obtained by laminating one or more layers in which narrow amorphous alloy ribbons and nanocrystalline alloy ribbons are placed side by side on a wide silicon steel sheet ribbon so as to yield approximately the same width as the wide silicon steel sheet ribbon; and then securing the levels in place.

Description

Composite laminated soft magnetic ribbons with controlled physical properties

[0001] The present invention relates to a composite laminated soft magnetic ribbon obtained by laminating soft magnetic ribbons such as silicon steel ribbons, amorphous alloy ribbons, nanocrystalline alloy ribbons, etc. The present invention relates to the manufacture of transformer cores, reactors, toroidal cores, bulk laminates, stator cores, rotor cores, magnetic circuits, etc. for motors and generators using the composite laminated soft magnetic ribbons.

[0002] Amorphous alloy ribbons are produced by quenching from a molten state. They do not retain a crystalline structure at the atomic level, and do not retain a specific periodic structure as determined by electron microscopy or X-ray diffraction. Therefore, amorphous alloy ribbons produced in a quenched state are typically subjected to stress relief annealing at a temperature lower than the crystallization temperature to further soften the magnetic field before use. Because amorphous alloy ribbons are produced by quenching from a molten state, their width is approximately 20 cm. Currently, the production and use of wider ribbons is limited. Soft magnetic ribbons with various properties can be produced from amorphous alloy ribbons, but the types generally available on the market are limited. It is known that the soft magnetic properties and core loss of conventional iron-based amorphous alloy ribbons are significantly better than those of silicon steel sheet ribbons, etc. However, their only drawback is that their magnetostriction constant is larger than that of nanocrystalline alloy ribbons and silicon steel sheet ribbons. This leads to degradation of magnetic properties such as magnetic permeability and core loss due to the thermal shrinkage of the resin caused by bonding and processing strain.

[0003] Silicon steel ribbon, a type of soft magnetic ribbon, has a high saturation magnetic flux density, allowing for the reduction of magnetic component volume and weight. Amorphous alloy ribbon and nanocrystalline alloy ribbon surpass silicon steel ribbon in magnetic properties such as permeability and core loss, making magnetic components superior in energy conservation. Nanocrystalline alloy ribbons have excellent magnetic properties, including magnetostriction, making them increasingly popular for use in magnetic components; however, their only drawback is their low rigidity. Optimizing magnetic components using amorphous alloy ribbons can achieve energy efficiency of over 97% in transformers and motors, making them suitable for energy conservation. Furthermore, nanocrystalline alloy ribbons have low magnetostriction, potentially reducing manufacturing restrictions such as processing and molding. Amorphous alloy ribbons and nanocrystalline alloy ribbons are typically about 0.03 mm thick, significantly thinner than silicon steel ribbons, resulting in low eddy current loss and often being used in wound and laminated configurations. As such, each soft magnetic ribbon has its own advantages and disadvantages, and using them alone to construct magnetic components does not provide sufficient performance. At present, almost no attempt has been made to improve the properties by combining with other materials, and devices are constructed using silicon steel sheet ribbon alone, amorphous alloy ribbon alone, or nanocrystalline alloy ribbon alone.

[0004] In Patent Document 1, in order to ensure the mechanical strength and rigidity that are the only drawbacks of nanocrystalline alloy laminated cores, support members are used that sandwich a non-magnetic material in the lamination direction of the laminated blocks.

[0005] In Patent Document 2, a method for manufacturing a wound magnetic core involves crystallizing a portion of an amorphous alloy ribbon that can be nanocrystallized, selecting an amorphous alloy ribbon with a similar shrinkage rate, selecting a nanocrystalline alloy ribbon with stable properties, nanocrystallizing it, and heat treating it to obtain stable properties.

[0006] In Patent Document 3, an amorphous core transformer is fabricated by butting amorphous alloy ribbons together and arranging and stacking large, wide amorphous alloy ribbons so that the butted surfaces are offset for each lamination.

[0007] In Patent Document 4, three rolls of soft magnetic alloy ribbons are laminated into one roll by applying epoxy resin, and the laminate of soft magnetic alloy ribbons is bonded using two types of thermosetting resins with different glass transition temperatures.

[0008] In conventional manufacturing methods, motor stators and rotors are manufactured by punching and laminating silicon steel sheets. Amorphous alloy ribbons and nanocrystalline alloy ribbons are thin and hard, the lifespan of punching dies is short, and the process of collecting, handling, and laminating the punched ribbons is time-consuming, making them unsuitable for laminating to manufacture stators and rotors. In Patent Document 5, an amorphous alloy ribbon is wound into a fan shape and applied to the stator core of a motor to manufacture an axial gap motor, which is then applied to a fan device.

[0009] In Patent Document 6, adhesively bonded soft magnetic alloy ribbons are layered while being coated with resin, and then heated and pressed to produce a laminate. Non-Patent Document 1 applies nanocrystalline alloy ribbons to a transformer core and investigates its characteristics. Non-Patent Document 2 describes a low-loss amorphous core structure that maintains the core shape by inserting an amorphous metal foil ribbon into a resin core holder after cutting and laminating it.

[0010] JP 2021-68865 A JP 2021-9921 A JP 2013-98349 A JP 2021-154732 A JP 2009-284578 A JP 2007-281314 A

[0011] Kazuhiro Idei, Fumio Kurihara, Yoshinori Sunaga, "Application of Next-Generation Nanocrystalline Soft Magnetic Materials to Transformer Cores," Takaoka Technical Report, Vol. 7 (2020), pp. 15-18; Yuji Enomoto, Hirohiro Tokoi, Takao Imagawa, Toshifumi Suzuki, Tsuyoshi Omata, Kenichi Soma, "Amorphous Motor Achieving IE5 Level of International High Efficiency Standard," Hitachi Review, June / July 2015 Combined Issue, pp. 50-55

[0012] Even with various conventional efforts, it cannot be said that magnetic components manufactured have sufficient characteristics. In order to solve the following problems that still exist, it is desired to provide a method for further controlling the physical properties and laminating soft magnetic ribbons with different characteristics to produce magnetic components with excellent characteristics.

[0013] While small nanocrystalline alloy laminated ribbons can be made more rigid by molding, the only drawback of large nanocrystalline alloy laminated ribbons is the need for a support member in the transformer core to ensure mechanical strength and rigidity. Furthermore, when nanocrystalline alloy laminated ribbons are used in motor or generator cores, noise and vibration may occur due to deformation caused by tension or repulsion from external forces. Transformers using amorphous alloy ribbons with high magnetostriction are noisy. Currently, the maximum ribbon width that can be produced for both amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately 20 cm. Wider composite laminated soft magnetic ribbons are needed to manufacture large magnetic products. Because nanocrystalline alloy ribbons are heat-treated before lamination, they may become more brittle than before the heat treatment.

[0014] To improve the efficiency of motors, it is necessary to apply amorphous alloy ribbons and nanocrystalline alloy ribbons, which are characterized by higher magnetic permeability and lower iron loss than silicon steel sheets, to create stators and rotors that are highly efficient and easy to produce. Until now, no research has been conducted into methods that effectively combine soft magnetic metals with different characteristics to control their physical properties and make them easy to manufacture. From the perspective of energy conservation, magnetic products made from ideal soft magnetic ribbons should be made from amorphous alloy ribbons and nanocrystalline alloy ribbons, which are not subjected to processing distortion or compressive stress due to molding. Magnetic components that are used with excitation vary depending on the purpose of use, ranging from low power to high power. There are also magnetic materials such as silicon steel sheets, which have a low coercive force and low saturation magnetic flux density, and silicon steel sheets, which have a relatively high coercive force and high saturation magnetic flux density.

[0015] To reduce the volume and weight of magnetic parts using soft magnetic ribbons, silicon steel sheets with high magnetic flux density are used as the main material, but their magnetic permeability, core loss, and other properties are inferior to those of amorphous alloy ribbons and nanocrystalline alloy ribbons. For this reason, although the volume and weight of magnetic parts increase, progress is being made in the development of transformers, motors, etc. that mainly use amorphous alloy ribbons and nanocrystalline alloy ribbons from the perspective of energy conservation. To manufacture large transformers using nanocrystalline alloy ribbons, they must be reinforced with nonmagnetic support materials to compensate for the drawback of low rigidity. It is necessary to develop composite laminated soft magnetic ribbons in which nanocrystalline alloy ribbons are held and laminated with silicon steel sheets and amorphous alloy ribbons so that they can stand on their own without using support materials.

[0016] The present invention has been made in consideration of the above problems, and aims to provide a composite laminated soft magnetic ribbon that is laminated to obtain maximum efficiency by combining the advantages of materials as magnetic parts such as transformers and motor cores, taking into consideration the advantages and disadvantages of individual soft magnetic ribbons such as silicon steel ribbons, amorphous alloy ribbons, and nanocrystalline alloy ribbons.

[0017] The composite laminated soft magnetic ribbon according to the present invention is a composite laminated soft magnetic ribbon obtained by stacking a plurality of layers of laminated soft magnetic ribbons, each layer being made by stacking a plurality of types of soft magnetic metal ribbons having different properties with the same width, and then fixing the stacked soft magnetic ribbons together, and is characterized in that the plurality of types of soft magnetic ribbons necessarily include an amorphous alloy ribbon and a nanocrystalline alloy ribbon.

[0018] The composite laminated soft magnetic ribbon according to the present invention is a composite laminated soft magnetic ribbon in which a laminated soft magnetic ribbon is wound multiple times and fixed, and is characterized in that the laminated soft magnetic ribbon is formed by laminating an amorphous alloy ribbon and a nanocrystalline alloy ribbon with the same width.

[0019] The composite laminated soft magnetic ribbon of the present invention is a composite laminated soft magnetic ribbon that is fixed after stacking multiple layers of laminated soft magnetic ribbons, and is characterized in that the laminated soft magnetic ribbon is formed by stacking one or more layers of narrow amorphous alloy ribbons and nanocrystalline alloy ribbons on a wide silicon steel sheet ribbon, the layers being arranged so that the width of the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately equal to the width of the wide silicon steel sheet ribbon.

[0020] The composite laminated soft magnetic ribbon according to the present invention is characterized in that a laminated soft magnetic ribbon is wound multiple times around a wide silicon steel sheet ribbon, the laminated soft magnetic ribbon being made of narrow amorphous alloy ribbons and nanocrystalline alloy ribbons arranged so that the width is approximately equal to the width of the wide silicon steel sheet ribbon, and then only the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons arranged so that the width is approximately equal to the width of the wide silicon steel sheet ribbon are wound multiple times and fixed.

[0021] Combining amorphous alloy ribbons with nanocrystalline alloy ribbons enables magnetic components that maintain soft magnetic properties with low iron loss while reinforcing the weak rigidity of the nanocrystalline alloy ribbon with the amorphous alloy ribbon. For example, a small, self-standing, low-noise transformer can be created. Winding the ribbons into magnetic components contributes to reducing the number of work processes, and when used in the stator of an axial gap motor, it can be processed directly into a core. By using a laminated soft magnetic ribbon in which narrow amorphous alloy ribbons and nanocrystalline alloy ribbons are arranged on a wide silicon steel sheet ribbon, the amorphous alloy ribbon and nanocrystalline alloy ribbon sections can operate with a small excitation current, while taking advantage of the large saturation magnetization of the silicon steel sheet ribbon, magnetic components such as miniaturized motor stators that can operate even with a large excitation current are possible. By winding a laminated soft magnetic ribbon that is a combination of an amorphous alloy ribbon and a nanocrystalline ribbon around a silicon steel ribbon with a width of 25 cm or more, it becomes possible to manufacture magnetic parts such as large transformers, motors, and generators with fewer work processes.

[0022] Fig. 1 is a diagram showing a composite laminated soft magnetic ribbon according to Example 1. Fig. 2 is a diagram showing a method for producing a composite laminated soft magnetic ribbon according to Example 2. Fig. 3 is a diagram showing a composite laminated soft magnetic ribbon produced in Example 2. Fig. 4 is a diagram showing a composite laminated soft magnetic ribbon according to Example 3. Fig. 5a is a diagram showing a method for producing a composite laminated soft magnetic ribbon according to Example 4. Fig. 5b is a diagram showing a method for producing a composite laminated soft magnetic ribbon according to Example 4. Fig. 6 is a diagram showing a composite laminated soft magnetic ribbon produced in Example 4.

[0023] Before describing the embodiments of the present invention, the principle of the present invention will be explained. Known soft magnetic ribbons include silicon steel sheets, amorphous alloy ribbons, and nanocrystalline alloy ribbons, but they have advantages and disadvantages in terms of magnetic properties, mechanical properties, etc. Most magnetic parts are manufactured by laminating the same materials. The good properties of each ribbon are combined macroscopically to form a composite laminated soft magnetic ribbon. The composite laminated soft magnetic ribbon according to the present invention is constructed by holding the nanocrystalline alloy ribbon with silicon steel sheet ribbons, amorphous alloy ribbons, etc., and is therefore composed of 100% soft magnetic ribbons, excluding adhesives, without the need for reinforcement with a nonmagnetic support material, thereby enabling magnetic parts to be made smaller in volume and lighter in weight.

[0024] Compared to silicon steel sheets, laminated soft magnetic ribbons made with amorphous alloy ribbons and nanocrystalline alloy ribbons have higher magnetic permeability, enabling magnetic parts that achieve energy savings by reducing iron loss. By using nanocrystalline alloy ribbon as the main component of a laminated soft magnetic ribbon, it is possible to reduce magnetostriction and reduce transformer hum. Furthermore, if the main component of the laminated soft magnetic ribbon is nanocrystalline alloy ribbon, the motor core may deform due to external force from the magnet, but the amorphous alloy ribbon increases rigidity, which is expected to reduce core deformation. Using laminated soft magnetic ribbons that combine the advantages of various materials, rather than using a single type of material, increases the possibility of manufacturing higher-performance products.

[0025] The advantages of silicon steel ribbon are its wide width and the ability to adjust the thickness as desired, but using it in composite laminated soft magnetic ribbon makes it possible to manufacture widths of 25 cm or more, leading to the development of magnetic parts for large transformers, motors, generators, etc. By combining a material with low coercivity and a material with high saturation magnetic flux density, when the excitation energy is low the material with low coercivity works up to the saturation magnetic flux density, and then when further excitation energy is added the material with high saturation magnetic flux density takes over, making it possible to create a composite material that utilizes the advantages of each.

[0026] FIG. 1 is a diagram showing a composite laminated soft magnetic ribbon 1 according to Example 1. To improve the characteristics, multiple types of soft magnetic ribbons 2 with the same ribbon width but different characteristics are stacked and fixed together to form a laminated soft magnetic ribbon 3. The multiple types of soft magnetic ribbons 2 must include amorphous alloy ribbons and nanocrystalline alloy ribbons. A third soft magnetic ribbon, such as a silicon steel ribbon, may be added. The number of layers can be selected appropriately from about 2 to 5. The laminated soft magnetic ribbons 3 are further stacked and fixed together in multiple layers to form a composite laminated soft magnetic ribbon 1. While FIG. 1 shows a two-layer stack, in practice, approximately 100 layers are used to ensure the required thickness. Adhesion can be used for fixing. Nanocrystalline alloy ribbons contribute to improving the magnetic characteristics of magnetic components. However, when used alone, they have low rigidity, are difficult to support, and may deform when used in magnetic components. By using a laminated soft magnetic ribbon in which an amorphous alloy ribbon is combined as a reinforcing material for a nanocrystalline alloy ribbon, the composite laminated soft magnetic ribbon can be used independently while maintaining good magnetic properties. From the perspective of energy conservation, a composite laminated soft magnetic ribbon 1 is used, which combines a nanocrystalline alloy ribbon and an amorphous alloy ribbon. The amorphous alloy ribbon compensates for the low rigidity of the nanocrystalline alloy ribbon, and the composite laminated soft magnetic ribbon 1 can be used as a bulk laminate. Combining four rectangular parallelepipeds makes a transformer. Punching and laminating it can be used as a motor core. Because amorphous alloy ribbons have a large magnetostriction constant, when they are used as a transformer, they vibrate with AC and cause noise. However, by controlling the amount of amorphous alloy ribbon used to be less than that of the nanocrystalline alloy ribbon, the vibration with AC can be reduced. While the amorphous alloy ribbon and nanocrystalline alloy ribbon are essential in Example 1, soft magnetic ribbons such as silicon steel ribbons may be used as needed. On the other hand, although the volume and weight will be somewhat larger, for magnetic components that are driven only by low current, if they are composed only of amorphous alloy ribbons and nanocrystalline alloy ribbons without using silicon steel sheet ribbons, the low coercive force will result in a significant reduction in iron loss, and the magnetic components can be started with a low current, which is preferable as it contributes to energy savings.

[0027] FIG. 2 is a diagram showing a method for producing a composite laminated soft magnetic ribbon 1 according to Example 2. To improve the characteristics, multiple amorphous alloy ribbons and nanocrystalline alloy ribbons with the same ribbon width but different characteristics are stacked to form a laminated soft magnetic ribbon 3. The laminated soft magnetic ribbon 3 is then wound and fixed to produce the composite laminated soft magnetic ribbon 1. The number of layers to be stacked can be appropriately selected from two to five. The soft magnetic ribbon 2 can be selected by adjusting the thickness, such as alternating amorphous alloy ribbons and nanocrystalline alloy ribbons, or one layer of amorphous alloy ribbon and two layers of nanocrystalline alloy ribbons. Using an adhesive as a fixing method can enhance mechanical strength and rigidity. The composite laminated soft magnetic ribbon 1 produced in this manner is cut as needed to produce magnetic parts such as transformers, toroidal cores, and reactors. A 2-cm-wide amorphous alloy ribbon wound on one reel and 2-cm-wide nanocrystalline alloy ribbons wound on two reels are prepared. Two layers of nanocrystalline alloy ribbons were stacked on top of an amorphous alloy ribbon, and then wound. The resulting ribbon was wound 100 times around a rectangular shape measuring 6 cm wide and 2 cm long to produce a 1 cm-thick composite laminated soft magnetic ribbon 1, as shown in Figure 3. This was used as a transformer core, which has good characteristics due to the use of nanocrystalline alloy ribbons and is self-standing without the need for a nonmagnetic reinforcing material. A similar method can also be used to produce reactors, motor cores, and bulk laminates. The combination of soft magnetic ribbons in Example 2, like that in Example 1, exhibits low hysteresis loss and eddy current loss, reduces iron loss, and has excellent soft magnetic properties, making it ideal for energy-saving magnetic components. Currently, stators for axial gap motors are made by cutting and laminating amorphous alloy ribbons and placing them in a case (Non-Patent Document 2). However, a cylindrical core made from the composite laminated soft magnetic ribbon 1 in Example 2 can be processed, wound with a coil, and used in an axial gap motor stator. When core components for axial gap motors are made from amorphous alloy ribbons, the wound core is fixed by adhesive solidification with resin, which applies stress to the core and causes large magnetostriction, resulting in deterioration of the soft magnetic properties. However, in the core components made from the composite laminated soft magnetic strip 1 of Example 2, the use of nanocrystalline alloy ribbons reduces the deterioration of the soft magnetic properties, thereby improving the work efficiency of the manufacturing process.

[0028] FIG. 4 is a diagram showing a composite laminated soft magnetic ribbon 1 according to Example 3. One or more layers of narrow amorphous alloy ribbons and nanocrystalline alloy ribbons as soft magnetic ribbons 2 are arranged on a wide silicon steel sheet ribbon 4 so that the width of the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately equal to the width of the wide silicon steel sheet ribbon 4, to form a laminated soft magnetic ribbon 3. The laminated soft magnetic ribbons 3 are further laminated and fixed in multiple layers to form a composite laminated soft magnetic ribbon 1. The laminated soft magnetic ribbon 3 in FIG. 4 is composed of one layer each of silicon steel sheet ribbon 4 and soft magnetic ribbon 2, but the laminated soft magnetic ribbon 3 may also be formed by laminating one layer of silicon steel sheet ribbon and multiple layers of soft magnetic ribbon 2. Furthermore, while FIG. 4 shows a diagram in which the laminated soft magnetic ribbons 3 are laminated in two layers to form the composite laminated soft magnetic ribbon 1, in reality, the laminated soft magnetic ribbons 3 are laminated in, for example, about 100 layers to ensure the required thickness. The composite laminated soft magnetic ribbon 1 can be processed as needed to form magnetic components such as motor cores, bulk laminates, and generator core materials. Conventionally, to manufacture a large motor core using an amorphous alloy ribbon, multiple teeth, which are part of the stator, were connected around the entire circumference to form a ring to form a single core. However, according to this embodiment, a motor core wider than conventional cores can be easily manufactured by a single press punch. The amorphous alloy ribbon and nanocrystalline alloy ribbon portions of the composite laminated soft magnetic ribbon 1 operate with a small excitation current, and by taking advantage of the greatest feature of the silicon steel sheet, which has a large saturation magnetization, this is ideal for magnetic components such as the stator of a small motor, which can maximize miniaturization. Furthermore, this composite laminated soft magnetic ribbon is suitable for magnetic components that operate with nanocrystalline alloy ribbon and amorphous alloy ribbon at low output and, although energy efficiency decreases when operating at maximum power consumption, can also operate with silicon steel sheet ribbon, which has a large saturation magnetization. When applied to a transformer, standby power consumption is reduced by operating with the nanocrystalline alloy ribbon and amorphous alloy ribbon, thereby saving energy. Similarly, when used in a motor, nanocrystalline alloy ribbons and amorphous alloy ribbons operate at low output, and the silicon steel ribbon portion also operates at maximum output. Silicon steel ribbons have inferior soft magnetic properties compared to nanocrystalline alloy ribbons and amorphous alloy ribbons, and the drawback is increased energy consumption, but silicon steel ribbons have smaller magnetostriction than amorphous alloy ribbons, so vibrations are not large when used in a transformer.

[0029] 5a and 5b are diagrams showing a method for producing a composite laminated soft magnetic ribbon 1 according to Example 4. As shown in Fig. 5a, a silicon steel sheet ribbon 4 having a thickness of 0.1 mm, a width of 50 cm, and a length of 6 m wound on one reel, an amorphous alloy ribbon 5 having a thickness of 0.03 mm, a width of 20 cm, and a length of approximately 1,000 m wound on two reels, and a nanocrystalline alloy ribbon 6 having a thickness of 0.02 mm, a width of 10 cm, and a length of approximately 1,000 m wound on one reel are prepared. The ribbons are pulled out from each reel, and as shown in Fig. 5b, the 20 cm wide amorphous alloy ribbon, the 10 cm wide nanocrystalline ribbon, and the 20 cm wide amorphous alloy ribbon are stacked side by side on the 50 cm wide silicon steel sheet ribbon 4 to form a laminated soft magnetic ribbon 3 having an overall width of 50 cm, the same as the silicon steel sheet ribbon, and the laminated soft magnetic ribbon 3 is then passed through a guide frame 7 and wound. The ribbon is wound three times, bending it by 90 degrees at four points along the circumference, to form a square with sides of 50 cm. Even after the silicon steel plate runs out, the 20 cm-wide amorphous alloy ribbon, the 10 cm-wide nanocrystalline alloy ribbon, and the 20 cm-wide amorphous alloy ribbon are continued to be wound 30 times while maintaining a total width of 50 cm. When the amorphous alloy ribbon reaches a thickness of 1.29 mm, the amorphous alloy ribbon is cut. If the amorphous alloy ribbon and the nanocrystalline alloy ribbon have the same thickness, the nanocrystalline alloy ribbon is also cut and the process is completed here. However, in the above example, since the nanocrystalline alloy ribbon is thinner, the nanocrystalline alloy ribbon alone is continued to be wound another 15 times. Once it is confirmed that the difference between the total thickness of the amorphous alloy ribbon after 30 windings and the total thickness of the nanocrystalline alloy ribbon after 45 windings is within 0.1 mm, the nanocrystalline alloy ribbon is also cut, resulting in the composite multilayer magnetic ribbon 1 shown in FIG. 6 . The cubic composite laminated magnetic ribbon 1 thus produced was fixed, and then cut at four corners to cut out four plates measuring 50 cm x 50 cm x 1.29 mm. The plates were press-punched to form motor core materials. The composite magnetic ribbon 1 according to this embodiment can also be used as a generator core. Magnetic components such as motor cores and generator cores produced according to this embodiment have the advantage that there is no restriction on ribbon width, and wide composite soft magnetic ribbons can be used. The method according to this embodiment is suitable for producing large transformers and motor cores, as they require a wide width, a thicker thickness, and a larger number of turns.

[0030] The characteristics of the magnetic components manufactured according to Examples 1 to 4 can be compared and summarized as follows. The magnetic components manufactured according to Examples 1 and 2 operate with low energy consumption when used at low power output, thanks to the nanocrystalline alloy ribbon and amorphous alloy ribbon, which have low saturation magnetic flux density but excellent soft magnetic properties. Therefore, the methods of Examples 1 and 2 are suitable for magnetic components that require low power output and require energy conservation. The magnetic components manufactured according to Examples 3 and 4 necessarily use silicon steel ribbon, which has high iron loss, and therefore generate large amounts of heat, which is somewhat disadvantageous from the perspective of energy conservation. However, at low power output, the amorphous alloy and nanocrystalline alloy function to achieve a certain degree of energy conservation, and at high power output, even if the nanocrystalline alloy ribbon and amorphous alloy ribbon are saturated, the silicon steel ribbon, which has high saturation magnetic flux density, continues to operate without saturating. The methods of Examples 3 and 4 are suitable for magnetic components used over a wide range of power outputs, from low to high. In the case of producing the same magnetic parts, in Examples 2 and 4, transformers, motor cores, etc. can be manufactured by winding and laminating. This has the advantage of realizing a reduction in the number of steps required to manufacture magnetic parts compared to Examples 1 and 3, which do not require winding but require the steps of punching and laminating.

[0031] According to the present invention, it is possible to manufacture magnetic parts such as bulk laminates, transformers, reactors, motor cores, and generator core materials having excellent properties from composite laminated soft magnetic ribbons that combine and incorporate the advantages of various soft magnetic ribbons, while reducing the number of manufacturing steps, and therefore the present invention has great industrial applicability.

[0032] 1 Composite laminated soft magnetic ribbon 2 Soft magnetic ribbon 3 Laminated soft magnetic ribbon 4 Silicon steel sheet ribbon 5 Amorphous alloy ribbon 6 Nanocrystalline alloy ribbon 7 Guide frame

Claims

1. A composite laminated soft magnetic ribbon which is fixed after stacking multiple layers of laminated soft magnetic ribbons, characterized in that the laminated soft magnetic ribbon is formed by stacking one or more layers of narrow amorphous alloy ribbons and nanocrystalline alloy ribbons on a wide silicon steel sheet ribbon, the layers being arranged so that the width of the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately equal to the width of the wide silicon steel sheet ribbon.

2. A composite laminated soft magnetic ribbon, characterized in that a laminated soft magnetic ribbon is wound multiple times around a wide silicon steel sheet ribbon, the laminated soft magnetic ribbon being made by arranging narrow amorphous alloy ribbons and nanocrystalline alloy ribbons so that the width of the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately equal to the width of the wide silicon steel sheet ribbon, and then only the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons arranged so that the width of the narrow amorphous alloy ribbons and nanocrystalline alloy ribbons is approximately equal to the width of the wide silicon steel sheet ribbon, and then fixed.

3. 3. A composite laminated soft magnetic ribbon, characterized in that, when the narrow amorphous alloy ribbon and the nanocrystalline alloy ribbon as described in claim 2 do not have the same thickness, only the narrow amorphous alloy ribbon and the nanocrystalline alloy ribbon are wound multiple times, and then the thicker soft magnetic ribbon of the amorphous alloy ribbon and the nanocrystalline alloy ribbon is cut, and the other soft magnetic ribbon is further wound, and when the total thickness of the other soft magnetic ribbon becomes approximately equal to the total thickness of the thicker soft magnetic ribbon, the other soft magnetic ribbon is cut and fixed.

4. 4. A magnetic part manufactured from the composite laminated soft magnetic ribbon according to claim 1, wherein the magnetic part is any one of a transformer, a motor core, and a generator core.