JPH08251888A - Tandem magnetic pole rotor, and its manufacture, and rotating lectric mahcine - Google Patents

Abstract

PURPOSE: To provide a tandem magnetic pole rotor which has firm junction structure to withstand ultrahigh-speed revolution. CONSTITUTION: Junction strength increases, without,a decarbonized layer or a carbonized layer existing at the junction interface between a nonmagnetic material and a permanent magnet and a magnetic material, by attaching the permanent magnet 14 at the center in diametrical direction of the nonmagnetic material 13 of nickel group alloy, and joining magnetic materials of alloy steel including nickel to both sides of front and rear in C direction of the rotary shaft of the nonmagnetic material and the permanent magnet, and forming a nickel diffusion layer at this junction interface, whereby this becomes a magnetic pole rotor which can withstand ultrahigh-speed revolution. Moreover, by providing a permanent magnet 14 at a part of the magnetic pole rotor 11, a part or the whole of the exciting coil 19 to be provided on the side of a stator 12 can be replaced with a permanent magnet, when using this magnetic pole rotor as the rotor of a tandem magnetic pole rotating-electric motor, in its turn, th rotating-electric machine can be downsized by making the exciting coil on the side of the stator small, or removing it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comb type magnetic pole rotor used in a comb type magnetic pole type rotating electric machine, a method for manufacturing the same, and a rotating electric machine having a comb type magnetic pole rotor.

[0002]

2. Description of the Related Art Rotating electric machines of various types are used according to their applications. One of the most widely used ultra-high speed rotating electric machines is the comb-shaped magnetic pole type rotating electric machine.
A general structure of this comb-shaped magnetic pole type rotating electric machine is as shown in FIG. 17, and the rotor 1 side has magnetic members 2 and 2 joined to the front and rear sides of the non-magnetic member 3 in the direction of the rotation axis C. It is constituted by the magnetic pole 4. The stator 5 side has a structure in which an armature coil 8 having an iron core 7 and an exciting coil 9 are mounted in a frame 6. In such a comb-type magnetic pole type rotating electric machine, the route in which the magnetic circuit 10 becomes the exciting coil 9-the magnetic pole 4-the armature coil 8-the magnetic pole 4-the exciting coil 9-the frame 6-the exciting coil 9 of the rotor 1 Pass through.

[0003]

However, in the conventional comb-shaped magnetic pole type electric rotating machine having such a structure, the large exciting coil 9 is mounted in the frame 6 of the stator 5, so that the stator 5 side is improved. There is a problem that the dimension in the direction of the rotating shaft becomes long, and eventually the outer shape of the entire rotary electric machine becomes large.

In order to solve such a problem, it is conceivable to replace a part or all of the exciting coil 9 with a permanent magnet having a magnetic force corresponding to the magnetic force and mount it on the magnetic pole rotor 1 side.

However, if a permanent magnet is mounted on the side of the magnetic pole rotor 1, it is necessary to strengthen the bonding relationship with the magnetic material 2 or the non-magnetic material 3 in order to have a structure that can withstand ultra-high speed rotation. However, strong joining of magnetic circuit materials is difficult in processing, a joining structure that can withstand ultra-high speed rotation cannot be obtained, and a permanent magnet having a magnetic force that can replace part or all of the exciting coil on the magnetic pole rotor side. A comb-shaped magnetic pole rotor having a structure in which a rotor is mounted and a rotating electric machine using the rotor have not been obtained.

The present invention has been made in order to solve such a conventional technical problem, and a permanent magnet having a magnetic force capable of replacing part or all of an exciting coil on the magnetic pole rotor side is also used for ultra-high speed rotation. An object of the present invention is to provide a comb-shaped magnetic pole rotor that is firmly joined to endure and a rotating electric machine using the same.

Another object of the present invention is to provide a method of manufacturing such a comb-shaped magnetic pole rotor.

[0008]

According to another aspect of the present invention, there is provided a comb-shaped magnetic pole rotor, wherein a permanent magnet is attached to a radial center of a non-magnetic material of a nickel-base alloy, and a rotating shaft of the non-magnetic material and the permanent magnet. A magnetic material made of an alloy steel containing nickel is bonded to both front and rear surfaces in the direction, and a nickel diffusion layer is formed at the bonding interface.

According to a second aspect of the invention, in the comb-shaped magnetic pole rotor according to the first aspect of the invention, a nickel-containing superalloy is used as the non-magnetic material and nickel-chromium-molybdenum steel is used as the magnetic material.

According to a third aspect of the invention, in the comb-shaped magnetic pole rotor according to the first or second aspect of the invention, 9% nickel alloy steel is used as the magnetic material.

According to a fourth aspect of the present invention, the comb-shaped magnetic pole rotor according to any one of the first to third aspects has a two-pole comb structure.

According to a fifth aspect of the present invention, there is provided a method for manufacturing a comb-shaped magnetic pole rotor, wherein a non-magnetic material of a nickel-base alloy having a permanent magnet attached to a central portion thereof is made of a magnetic alloy steel containing nickel on both front and rear sides in a rotation axis direction. The material is arranged such that the nickel layer is interposed on at least one of the facing surfaces, and the nonmagnetic material and the permanent magnet and the magnetic material are diffusion-bonded by the hot isostatic pressing method.

According to a sixth aspect of the present invention, in the method of manufacturing a comb-shaped magnetic pole rotor according to the fifth aspect of the present invention, the surface of the non-magnetic material and the permanent magnet facing the magnetic material, or the non-magnetic material and the permanent magnet of the magnetic material. A nickel plating layer is formed on at least one of the surfaces facing each other, and the nonmagnetic material and the permanent magnet and the magnetic material are diffusion-bonded by the hot isostatic pressing method.

According to a seventh aspect of the present invention, in the method of manufacturing a comb-shaped magnetic pole rotor according to the fifth aspect of the invention, a nickel foil is interposed between the facing surfaces of the non-magnetic material and the permanent magnet and the magnetic material, and the hot work is performed. The non-magnetic material and the permanent magnet and the magnetic material are diffusion-bonded by the positive pressure method.

According to another aspect of the present invention, there is provided a rotating electric machine in which a stator to which an armature coil and an exciting coil are mounted, and a permanent magnet is attached to a radial center of a non-magnetic material of nickel-base alloy. A magnetic material made of an alloy steel containing nickel is bonded to both front and rear surfaces of the permanent magnet in the direction of the rotation axis, and a comb-shaped magnetic pole rotor having a nickel diffusion layer formed at the bonding interface is provided.

According to a ninth aspect of the present invention, there is provided a rotating electric machine having a size corresponding to an armature coil mounted stator and an exciting coil to be mounted on the stator at a radial center of a non-magnetic material of nickel-base alloy. Comb-shaped magnetic pole in which a permanent magnet having a magnetic force of 1 is attached, magnetic materials made of alloy steel containing nickel are bonded to both front and rear surfaces of the non-magnetic material and the permanent magnet in the rotation axis direction, and a nickel diffusion layer is formed at the bonding interface. And a rotor.

According to a tenth aspect of the present invention, there is provided a comb-shaped magnetic pole rotor comprising:
Magnetic material of alloy steel containing nickel is bonded to both front and rear surfaces of the non-magnetic material of nickel-based alloy in the rotation axis direction, and permanent magnets are embedded at the front and rear ends of the magnetic material in the rotation axis direction. A nickel diffusion layer is formed at the bonding interface with the material and the bonding interface between the magnetic material and the permanent magnet.

According to an eleventh aspect of the present invention, in the comb-shaped magnetic pole rotor according to the tenth aspect, a nickel-containing superalloy is used as the non-magnetic material and nickel-chromium-molybdenum steel is used as the magnetic material.

The invention of claim 12 is the invention of claim 10 or 11.
In the comb-shaped magnetic pole rotor of the present invention, 9% nickel alloy steel is used as the magnetic material.

According to a thirteenth aspect of the present invention, the comb-type magnetic pole rotor according to any one of the tenth to twelfth aspects of the present invention is a two-pole comb type.

According to a fourteenth aspect of the present invention, there is provided a method for manufacturing a comb-shaped magnetic pole rotor, wherein a magnetic material made of an alloy steel containing nickel is provided on both front and rear sides of a non-magnetic material of a nickel-base alloy in a direction of a rotation axis, among the facing surfaces thereof. Of the magnetic material, the permanent magnets are arranged at the outer ends of the magnetic materials in the direction of the rotation axis, and the nickel layers are arranged so that at least one of the facing surfaces thereof has the nickel layer interposed therebetween. However, the non-magnetic material, the magnetic material, and the permanent magnet are diffusion-bonded by the hot isostatic pressing method.

According to a fifteenth aspect of the present invention, in the method of manufacturing a comb-shaped magnetic pole rotor according to the fourteenth aspect, at least the facing surfaces of the non-magnetic material and the magnetic material and the facing surfaces of the magnetic material and the permanent magnet are at least provided. A nickel plating layer is formed on one side, and the non-magnetic material, the magnetic material, and the permanent magnet are diffusion-bonded by a hot isostatic pressing method.

According to a sixteenth aspect of the present invention, in the method of manufacturing a comb-shaped magnetic pole rotor according to the fourteenth aspect, between the facing surfaces of the non-magnetic material and the magnetic material and between the facing surfaces of the magnetic material and the permanent magnet, respectively. A nickel foil is interposed between the non-magnetic material, the magnetic material and the permanent magnet by diffusion bonding by a hot isostatic pressing method.

According to a seventeenth aspect of the present invention, there is provided a rotating electric machine in which a stator provided with an armature coil and an exciting coil and a magnetic material made of an alloy steel containing nickel on the front and rear surfaces of a non-magnetic material of nickel-base alloy in the rotation axis direction. And the permanent magnets are embedded at the front and rear ends of the magnetic material in the direction of the rotation axis, and nickel diffusion layers are formed at the bonding interface between the non-magnetic material and the magnetic material and at the bonding interface between the magnetic material and the permanent magnet. And a magnetic pole rotor.

[0025]

In the comb-shaped magnetic pole rotor according to the first aspect of the present invention, the permanent magnet is attached to the radial center of the non-magnetic material of the nickel-base alloy, and the front and rear surfaces of the non-magnetic material and the permanent magnet are provided with nickel. By joining the magnetic material of the alloy steel containing it and forming the nickel diffusion layer at this joining interface, there is no decarburized layer or carbonized layer at the joining interface between the non-magnetic material and the permanent magnet and the magnetic material, and the joining strength is improved. In addition, the magnetic pole rotor can withstand ultra-high speed rotation.

Further, by providing a permanent magnet on a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanent. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

In the comb-shaped magnetic pole rotor according to the invention of claim 2,
By using a nickel-containing superalloy as the non-magnetic material and nickel-chromium-molybdenum steel as the magnetic material, and forming a nickel diffusion layer at the bonding interface between these non-magnetic material and permanent magnet, the non-magnetic material Further, since there is no decarburized layer or carbonized layer at the joining interface between the permanent magnet and the magnetic material, the joining strength is increased, and the magnetic pole rotor can withstand ultra-high speed rotation.

Further, by providing a permanent magnet in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanent. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

In the comb-shaped magnetic pole rotor according to the invention of claim 3,
By sandwiching the non-magnetic material of the nickel-based alloy and the permanent magnet with the magnetic material of 9% nickel alloy steel from both front and rear sides in the rotation axis direction, and forming the nickel diffusion layer at the joint interface,
Since there is no decarburized layer or carbonized layer at the joining interface between the non-magnetic material or the permanent magnet and the magnetic material, the joining strength is increased, and the magnetic pole rotor can withstand ultra-high speed rotation.

Further, by providing a permanent magnet in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanent. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

In the comb-shaped magnetic pole rotor according to the invention of claim 4,
With the two-pole comb structure, a magnetic pole rotor for ultra-high speed rotation can be formed.

In the method for manufacturing a comb-shaped magnetic pole rotor according to the present invention, the magnetic property of the alloy steel containing nickel is provided on both the front and rear sides in the rotation axis direction of the non-magnetic material of the nickel base alloy having the permanent magnet attached to the central portion. By arranging the material so that a nickel layer intervenes on at least one of the facing surfaces, and diffusively bonding the non-magnetic material and the permanent magnet with the magnetic material by the hot isostatic pressing method. A nickel diffusion layer is grown at the bonding interface between a magnetic material and a permanent magnet and a magnetic material, and there is no decarburized layer or carbonized layer at the bonding interface, the bonding strength is high, and a magnetic pole rotor that can withstand ultra-high speed rotation is obtained.

In the method for manufacturing a comb-shaped magnetic pole rotor according to the sixth aspect of the present invention, the non-magnetic material and the surface of the permanent magnet facing the magnetic material,
Alternatively, by forming a nickel plating layer on at least one of the facing surfaces of the non-magnetic material and the permanent magnet of the magnetic material, and by diffusion bonding the non-magnetic material and the permanent magnet and the magnetic material by the hot isostatic pressing method, A nickel diffusion layer is grown at the joint interface between a non-magnetic material or a permanent magnet and a magnetic material, and a magnetic pole rotor having a large joint strength without a decarburized layer or a carbonized layer at the joint interface and capable of withstanding ultra-high speed rotation is obtained.

In the method for manufacturing a comb-shaped magnetic pole rotor according to the present invention, a nickel foil is interposed between the facing surfaces of the non-magnetic material and the permanent magnet and the magnetic material, and the non-magnetic material is applied by the hot isostatic pressing method. Diffusion bonding between the magnetic material and the permanent magnet and the magnetic material causes a nickel diffusion layer to grow at the bonding interface between the non-magnetic material and the magnetic material, and the bonding strength is high because there is no decarburized layer or carbonized layer at the bonding interface. To obtain a magnetic pole rotor that can withstand ultra-high speed rotation.

In the rotating electric machine according to the invention of claim 8, a permanent magnet is attached to the stator in which the armature coil and the exciting coil are mounted, and the non-magnetic material of the nickel-base alloy in the radial center thereof. The magnetic material of alloy steel containing nickel is joined to the front and rear surfaces of the permanent magnet in the direction of the rotation axis, and the comb-shaped magnetic pole rotor having the nickel diffusion layer formed on the bonding interface is provided on the comb-shaped magnetic pole rotor side. A part of the magnetic force of the exciting coil on the side of the stator is supplemented by the provided permanent magnet, and the size required for the exciting coil is reduced by that amount, which in turn reduces the size of the entire rotary electric machine.

According to a ninth aspect of the present invention, there is provided a rotating electric machine having a stator having an armature coil and a size corresponding to an exciting coil to be mounted on the stator at a radial center of a non-magnetic material of nickel-base alloy. Comb-shaped magnetic pole in which a permanent magnet having a magnetic force of 1 is attached, magnetic materials made of alloy steel containing nickel are bonded to both front and rear surfaces of the non-magnetic material and the permanent magnet in the rotation axis direction, and a nickel diffusion layer is formed at the bonding interface. By providing the rotor, the permanent magnets provided on the side of the comb-shaped magnetic pole rotor do not require an exciting coil on the side of the stator, and the size of the frame on the side of the stator is reduced by that amount. Reduce the size.

In the comb-shaped magnetic pole rotor according to the present invention, the magnetic material of alloy steel containing nickel is joined to the front and rear surfaces of the non-magnetic material of the nickel-base alloy in the direction of the rotation axis, and the magnetic material in the direction of the rotation axis of the magnetic material is joined. By embedding a permanent magnet in each of the front and rear ends and forming a nickel diffusion layer at the joint interface between the non-magnetic material and the magnetic material and the joint interface between the magnetic material and the permanent magnet, the non-magnetic material, the magnetic material, and the permanent magnet are formed. Since there is no decarburized layer or carbonized layer at each of the joining interfaces, the joining strength is increased, and the magnetic pole rotor can withstand ultra-high speed rotation.

Further, by providing a permanent magnet in a part of the magnetic pole rotor, when the magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanent. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

According to the eleventh aspect of the present invention, in the comb-shaped magnetic pole rotor, a nickel-containing superalloy is used as the non-magnetic material, nickel chrome molybdenum steel is used as the magnetic material, and a bonding interface between the non-magnetic material and the magnetic material and magnetic properties are used. By forming a nickel diffusion layer at the joint interface between the material and the permanent magnet, there is no decarburized layer or carbonized layer at the joint interface between the non-magnetic material, the magnetic material and the permanent magnet, and the joint strength is increased. The magnetic pole rotor can withstand high-speed rotation.

Further, by providing a permanent magnet on a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanently set. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

According to the twelfth aspect of the present invention, in the comb-shaped magnetic pole rotor, 9% nickel alloy steel is used as the magnetic material, and the joining interface between the non-magnetic material and the magnetic material and the joining interface between the magnetic material and the permanent magnet are used. By forming a nickel diffusion layer, there is no decarburization layer or carbonized layer at the bonding interface between the non-magnetic material, the magnetic material and the permanent magnet, the bonding strength increases and the magnetic pole rotor can withstand ultra-high speed rotation. be able to.

Further, by providing a permanent magnet in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is permanent. It can be replaced by a magnet, which in turn reduces the size of the stator excitation coil,
Alternatively, by eliminating it, the size of the rotating electric machine can be reduced.

In the comb-shaped magnetic pole rotor according to the thirteenth aspect of the present invention, the magnetic pole rotor for ultra-high speed rotation can be formed by forming the two-pole comb-shaped rotor.

In the method for manufacturing a comb-shaped magnetic pole rotor according to the fourteenth aspect of the present invention, the magnetic material of alloy steel containing nickel is provided on both front and rear sides of the non-magnetic material of nickel-base alloy in the direction of the rotation axis among the opposing surfaces thereof. Of the magnetic material, the permanent magnets are arranged at the outer ends of the magnetic materials in the direction of the rotation axis, and the nickel layers are arranged so that at least one of the facing surfaces thereof has the nickel layer interposed therebetween. Then, by diffusion bonding the non-magnetic material, the magnetic material, and the permanent magnet by the hot isostatic pressing method, a nickel diffusion layer is grown at each bonding interface between the non-magnetic material, the magnetic material, and the permanent magnet,
(EN) A magnetic pole rotor that has no decarburized layer or carbonized layer at the joint interface and has a large joint strength and can withstand ultra-high speed rotation.

In the method of manufacturing a comb-shaped magnetic pole rotor according to the fifteenth aspect of the present invention, a nickel plating layer is formed on at least one of the facing surfaces of the non-magnetic material and the magnetic material and the facing surface of the magnetic material and the permanent magnet. Then, by diffusion bonding the non-magnetic material, the magnetic material, and the permanent magnet by the hot isostatic pressing method, a nickel diffusion layer is grown at each bonding interface between the non-magnetic material, the magnetic material, and the permanent magnet, (EN) A magnetic pole rotor that has no decarburized layer or carbonized layer at the joint interface and has a large joint strength and can withstand ultra-high speed rotation.

In the method for manufacturing a comb-shaped magnetic pole rotor according to the sixteenth aspect of the present invention, nickel foil is interposed between the facing surfaces of the non-magnetic material and the magnetic material and between the facing surfaces of the magnetic material and the permanent magnet. By diffusively bonding the non-magnetic material, the magnetic material, and the permanent magnet by the hot isostatic pressing method, a nickel diffusion layer is grown at each bonding interface of the non-magnetic material, the magnetic material, and the permanent magnet, and the bonding interface is formed. There is no decarburized layer or carbonized layer, and the bonding strength is large, and a magnetic pole rotor that can withstand ultra-high speed rotation is obtained.

According to a seventeenth aspect of the present invention, there is provided a rotating electric machine in which a stator provided with an armature coil and an exciting coil and a magnetic material made of an alloy steel containing nickel on the front and rear surfaces of a non-magnetic material of a nickel-base alloy in a rotation axis direction. And the permanent magnets are embedded at the front and rear ends of the magnetic material in the direction of the rotation axis, and nickel diffusion layers are formed at the bonding interface between the non-magnetic material and the magnetic material and at the bonding interface between the magnetic material and the permanent magnet. By including the shape magnetic pole rotor, a part of the magnetic force of the exciting coil on the stator side is supplemented by the permanent magnet provided on the side of the comb magnetic pole rotor,
The size required for the exciting coil is reduced, which in turn reduces the size of the entire rotary electric machine.

[0048]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the invention of a rotating electric machine, which comprises a two-pole comb-shaped magnetic pole rotor 11 and a stator 12. The two-pole comb-shaped magnetic pole rotor 11 has a disk-shaped permanent magnet 14 embedded in the central portion of a non-magnetic material 13 made of a nickel-based alloy having a substantially elliptical disk shape made of a nickel-containing superalloy such as Inconel 718, The non-magnetic material 13 and the permanent magnet 14 have a columnar shape on both front and rear sides in the rotation axis direction, which are made of a low alloy steel containing several percent nickel such as nickel chromium molybdenum steel (SNCM630) or 9 percent nickel alloy steel. This is a structural structure in which a magnetic material 15 is bonded and a nickel interdiffusion layer is formed at the bonding interface between the non-magnetic material 13 and the permanent magnet 14 and the magnetic material 15.

The stator 12 is an outer frame 1 made of a magnetic material.
In this structure, an armature coil 18 having an iron core 17 is attached to the center of the inner part of the inner peripheral portion 6 of the outer frame 16, and an exciting coil 18 is attached to the inner circumferences of the front and rear ends of the outer frame 16 in the direction of the rotation axis C.

The relationship between the permanent magnet 14 on the side of the magnetic pole rotor 11 and the exciting coil 19 on the side of the stator 12 is such that the magnetic circuit 20 is formed by the magnetic force of the permanent magnet 14 and is formed only by the conventional exciting coil. A part of the circuit 21 is supplemented, and the size required for the exciting coil 19 of this embodiment is smaller than that of the conventional one.

Next, the first embodiment of the invention of the method of manufacturing the magnetic pole rotor 11 used in the first embodiment of the invention of the rotating electric machine will be described with reference to FIGS. First, as shown in FIG. 2, magnetic material 1 of nickel-containing alloy steel
No. 5 cylindrical nickel-chromium-molybdenum steel (SNC
M630), an elliptical disc-shaped superalloy Inconel 718 containing 25% of nickel is used as the non-magnetic material 13 of a nickel-based alloy, and a samarium cobalt magnet, a neodymium iron boron magnet, or the like is used in the central portion of the non-magnetic material 13. The disk-shaped permanent magnet 14 is embedded, and these joint surfaces are processed and formed into a shape that is combined with each other, and mirror-finished.

Then, a nickel plating layer 31 having a thickness of about 100 μm is formed on the joint surface of at least one of the non-magnetic material 13 and the permanent magnet 14 and the magnetic material 15, here the joint surface of the magnetic material 15. The interposition of the nickel plating layer 31 prevents the oxidation of the iron component contained in the magnetic material 15 in particular, and makes the finishing strength in the subsequent hot isostatic pressing (HIP) step ideal.

Next, the non-magnetic material 13, the permanent magnet 14 and the magnetic materials 15, 15 are combined and housed in the HIP can 32 as shown in FIG. Was placed in a heating furnace, and then an inert gas such as argon gas was injected, and HIP (hot isotropic pressure pressurization) was performed for about 2 hours under the conditions of 1200 ° C. and 1000 atm. Solid-phase bonding is performed by causing mutual diffusion at the bonding interface between the magnetic material 13 and the permanent magnet 14 and the magnetic material 15.
For the hot isostatic pressing method (HIP method), see Japanese Patent Publication No. 6-7740).

The two-pole comb-shaped magnetic pole rotor 11 thus obtained by the HIP method is shown in FIG. 4, and the nickel plating layer 31 existing at the joining interface by the solid-state joining by HIP has the non-magnetic material 13 and Permanent magnet 14 and magnetic material 1
5 diffuses inward from the joint interface with 5, the original nickel plating layer 31 disappears, and an interdiffusion layer is formed near the original interface.

In the first embodiment of the invention of the method for manufacturing the above-mentioned comb-shaped magnetic pole rotor, instead of nickel chromium molybdenum steel as the magnetic material 15, a low alloy steel containing a few percent nickel, for example, 9 percent. Nickel alloy steel can be used, and even in that case, the magnetic pole rotor 11 can be manufactured by the HIP method under substantially the same conditions as described above. Further, the strength of the bonding interface of the magnetic pole rotor 11 thus produced is almost the same.

Next, a second embodiment of the method of manufacturing the comb-shaped magnetic pole rotor will be described with reference to FIGS. 5 and 6. First, as shown in FIG. 5, magnetic material 1 of nickel-containing alloy steel
No. 5 cylindrical nickel-chromium-molybdenum steel (SNC
M630), an elliptical disc-shaped superalloy Inconel 718 containing 25% of nickel is used as the non-magnetic material 13 of a nickel-based alloy, and a samarium cobalt magnet, a neodymium iron boron magnet, or the like is used in the central portion of the non-magnetic material 13. The disk-shaped permanent magnet 14 is embedded, and these joint surfaces are processed and formed into a shape that is combined with each other, and mirror-finished.

Then, a nickel foil 34 having a thickness of about 100 μm is interposed between the non-magnetic material 13 and the permanent magnet 14 and the magnetic material 15 to combine both materials, and this is combined with the HIP can 32 as shown in FIG. It is housed inside, and the lid 33 is closed to seal it. Then, the non-magnetic material 13 and the permanent magnet 14 and the magnetic material are housed in a heating furnace, an inert gas such as argon gas is injected, and HIP is performed at 1200 ° C. and 1000 atmospheric pressure for about 2 hours. Solid-phase bonding is performed by causing mutual diffusion at the bonding interface with 15.

The two-pole comb-shaped magnetic pole rotor 11 thus obtained by the HIP method is the same as that obtained in the first embodiment of the invention of the above manufacturing method as shown in FIG. By the phase bonding, the nickel foil 34 diffuses inward from the bonding interface between both materials, the original nickel foil 34 disappears, and an interdiffusion layer is formed near the original interface.

Two-pole comb-shaped magnetic pole rotor 1 thus obtained
1 shows almost the same strength as that obtained in the first embodiment of the invention of the above manufacturing method.

In the second embodiment of the invention of the above-mentioned manufacturing method, the magnetic material 15 is replaced by nickel chromium molybdenum steel, and low alloy steel containing a few percent nickel, for example, 9 percent nickel alloy steel is used. In that case, the magnetic pole rotor can be manufactured by the HIP method under almost the same conditions as above. Further, the strength of the bonding interface of the magnetic pole rotor 11 thus produced is almost the same.

In each of the first and second embodiments of the invention of the above manufacturing method, the temperature condition as the condition of the HIP method is the temperature condition just before the material used changes from the solid phase to the liquid phase, and the pressure condition is the higher the pressure. Although desirable, it is not particularly limited. Further, the HIP time is not particularly limited within the range of several tens of minutes to several hours. Further nickel plated layer 3
1 can be formed on the non-magnetic material 13 side, and can also be formed on both materials 13, 15. The thickness of each of the nickel plating layer 31 and the nickel foil 34 can be set to several tens of microns to several hundreds of microns.

The first aspect of the invention of the rotary electric machine shown in FIG.
The manufacturing method of the two-pole comb-shaped magnetic pole rotor 11 used in the first embodiment is not limited to those of the first and second embodiments of the invention of the above-described manufacturing method. A magnetic pole rotor having a texture structure in which magnetic materials 15 and 15 made of alloy steel containing nickel are bonded to both front and rear surfaces of the material 13 and the permanent magnet 14 in the rotation axis direction, and a nickel diffusion layer is formed at the bonding interface. For example, even if it is obtained by another method, it has a similarly large strength and is particularly suitable for use as a rotor of an ultrahigh-speed rotating electric machine.

Next, a second embodiment of the invention of a rotary electric machine will be described with reference to FIG. FIG. 7 shows a second embodiment of the invention of a rotary electric machine, which is a two-pole comb-shaped magnetic pole rotor 41.
And a stator 42. The two-pole comb-shaped magnetic pole rotor 41 is a space formed in the central portion of the non-magnetic materials 43, 43 of a hat-shaped nickel-based alloy made of a nickel-containing superalloy such as Inconel 718 as opposed to each other. A cylindrical permanent magnet 44 is embedded in the non-magnetic material 43, 43, and a low alloy containing several percent nickel such as nickel chromium molybdenum steel (SNCM630) or 9 percent nickel alloy steel on both front and rear sides of the non-magnetic material 43, 43 in the rotation axis direction. Cylindrical magnetic materials 45, 45 made of steel are joined together, and a non-magnetic material 43, a permanent magnet 44, and a magnetic material 45 are joined.
This is a structural structure in which a nickel interdiffusion layer is formed at each joint interface with.

The stator 42 is an outer frame 4 made of a magnetic material.
6 has a structure in which an armature coil 48 having an iron core 47 is mounted in the central portion of 6, and by providing the permanent magnet 44 with a strong magnetic force, the conventionally required excitation coil is not provided.

In the rotating electric machine of this embodiment, the permanent magnet 44
Thus, the magnetic circuit 49 is formed, and the magnetic pole rotor 41 rotates at high speed. Therefore, it is not necessary to provide a space for mounting the exciting coil in the outer frame 46, and the dimension of the outer frame 46 in the rotation axis direction is reduced accordingly.

Next, the second aspect of the invention of the rotary electric machine shown in FIG.
The first embodiment of the invention of the method of manufacturing the magnetic pole rotor 41 used in the embodiment will be described with reference to FIGS. First, as shown in FIG. 8, a cylindrical nickel-chromium-molybdenum steel (SNCM630) is used as the magnetic material 45 of the nickel-containing alloy steel, and a hat-shaped superalloy containing 25% of nickel as the non-magnetic material 43 of the nickel-based alloy. Using Inconel 718, a samarium-cobalt magnet, a neodymium iron boron magnet, or the like is used as the columnar permanent magnet 44, and these joining surfaces are processed and molded into a shape in which they are combined with each other, and mirror-finished.

Then, the joining surface of at least one of the non-magnetic material 43 and the permanent magnet 44, and the non-magnetic material 43 and the magnetic material 45.
A nickel plating layer 51 having a thickness of about 100 μm is formed on at least one of the joint surfaces, that is, both the front and back joint surfaces of the nonmagnetic material 43. This nickel plating layer 51
In particular, oxidation of the iron component contained in the magnetic material 45 is prevented by the inclusion of, and the finishing strength in the subsequent HIP step becomes ideal.

Next, these non-magnetic materials 43, 43 are opposed to each other, and the permanent magnet 44 is inserted into the space formed in the center of the non-magnetic materials 43, 43. 9, and housed in a HIP can 52 as shown in FIG. 9, sealed with a lid 53, housed in a heating furnace and injected with an inert gas such as argon gas, 1200 ° C. HIP (hot isostatic pressurization) is performed under the condition of 1000 atm for about 2 hours to cause mutual diffusion at each bonding interface of the non-magnetic material 43, the permanent magnet 44, and the magnetic material 45, and solid phase. Join.

The two-pole comb-shaped magnetic pole rotor 41 thus obtained by the HIP method is shown in FIG. 10. The nickel plating layer 51 existing at the joining interface by the solid-state joining by the HIP and the non-magnetic material 43. Permanent magnet 44 and magnetic material 4
Diffusion from each joint interface with 5 to each inside,
The original nickel plating layer 51 disappears and an interdiffusion layer is formed near the original interface.

In the first embodiment of the invention of the method for manufacturing the above-mentioned comb-shaped magnetic pole rotor, the nickel-chromium-molybdenum steel is used as the magnetic material 45 instead of the low alloy steel containing a few percent nickel, for example, 9 percent. Nickel alloy steel can be used, and even in that case, the magnetic pole rotor 41 can be manufactured by the HIP method under substantially the same conditions as described above. Further, the strength of the joint interface of the magnetic pole rotor 41 produced is almost the same.

Next, a second embodiment of the invention of the method for manufacturing the comb-shaped magnetic pole rotor used in the second embodiment of the invention of the rotating electric machine will be described with reference to FIG. First, a cylindrical nickel-chromium-molybdenum steel (SNCM630) is used as the magnetic material 45 of the nickel-containing alloy steel, and a cap-shaped superalloy Inconel 718 containing 25% of nickel is used as the non-magnetic material 43 of the nickel-based alloy. A samarium-cobalt magnet, a neodymium iron boron magnet, or the like is used as the permanent magnet 44, and the joining surfaces thereof are processed and shaped into a shape that is combined with each other, and mirror-finished.

Then, 100 is provided between the non-magnetic material 43 and the permanent magnet 44 and 100 is provided between the non-magnetic material 43 and the magnetic material 45.
Both materials are combined with a nickel foil 54 having a thickness of about micron (this nickel foil 54 can be preformed according to the shape of the bonding surface) interposed therebetween, and this is shown in the same manner as in the first embodiment. HIP can 5 as shown in 9
It is housed in 2 and is covered with a lid 53 to be hermetically sealed. Then, it is housed in a heating furnace, an inert gas such as argon gas is injected, and HIP is performed under the conditions of 1200 ° C. and 1000 atm for about 2 hours, and the non-magnetic material 43, the permanent magnets 44, and the magnetic material. Four
Solid-phase bonding is performed by causing mutual diffusion at the bonding interface with 5.

The two-pole comb-shaped magnetic pole rotor 41 thus obtained by the HIP method is the same as that obtained in the first embodiment of the invention of the above manufacturing method as shown in FIG. By the phase bonding, the nickel foil 54 diffuses inward from the bonding interface between both materials, the original nickel foil 54 disappears, and an interdiffusion layer is formed near the original interface.

The 2-pole comb-shaped magnetic pole rotor 4 thus obtained
1 shows almost the same strength as that obtained in the first embodiment of the invention of the above manufacturing method.

In the second embodiment of the method of manufacturing the magnetic pole rotor used in the second embodiment of the rotating electric machine invention, nickel magnetic nickel molybdenum steel is used as the magnetic material 45 in place of several percent. Nickel-containing low alloy steels, such as 9 percent nickel alloy steels, can be used, and HIPs will still be used under approximately the same conditions as above.
A magnetic pole rotor can be made by the method. Further, the strength of the joint interface of the magnetic pole rotor 41 produced is almost the same.

Further, in each of the first and second embodiments of the invention of the above-mentioned manufacturing method, the temperature condition as the condition of the HIP method is the temperature condition just before the material used changes from the solid phase to the liquid phase, and the pressure condition is the higher the pressure. Although desirable, it is not particularly limited. Further, the HIP time is not particularly limited within the range of several tens of minutes to several hours. Further nickel plated layer 5
1 can be formed on the magnetic material 45 side and the permanent magnet 44 side, and can also be formed on all members. The nickel plating layer 51 and the nickel foil 54 can each have a thickness of several tens of microns to hundreds of tens of microns.

The second aspect of the invention of the rotary electric machine shown in FIG.
The manufacturing method of the two-pole comb-shaped magnetic pole rotor 41 used in this embodiment is not particularly limited to that of the first and second embodiments of the invention of the above-mentioned manufacturing method, and the permanent magnet 44 is provided in the central portion. Are arranged, non-magnetic materials 43, 43 of nickel-based alloy are joined to both sides thereof, and magnetic materials 45, 45 of alloy steel containing nickel are provided outside the non-magnetic materials 43, 43, respectively.
If the magnetic pole rotor has a textured structure in which a nickel diffusion layer is formed at each of these junction interfaces, even if it is obtained by another method, it has a similarly large strength, This makes it suitable for use as the rotor of an ultrahigh-speed rotating electric machine.

Next, a third embodiment of the invention of a rotary electric machine will be described with reference to FIG. FIG. 12 shows a rotating electric machine according to a third embodiment of the invention, which is composed of a two-pole comb-shaped magnetic pole rotor 61 and a stator 62. The two-pole comb-shaped magnetic pole rotor 61 is provided on both sides of a non-magnetic material 63 of a nickel-based alloy having a substantially elliptical disk shape made of a nickel-containing superalloy such as Inconel 718, for example, nickel chrome molybdenum steel (SNCM630) or Cylindrical magnetic materials 65, 65 made of low alloy steel containing a few percent nickel such as 9 percent nickel alloy steel are joined together, and ring-shaped permanent magnets 64 are provided on the outer ends of the magnetic materials 65, 65 respectively. , 64 are embedded, and the non-magnetic material 63 and the magnetic material 6 are embedded.
5 has a texture structure in which a nickel interdiffusion layer is formed at the bonding interface with the magnetic material 65 and the bonding interface between the magnetic material 65 and the permanent magnet 64.

The stator 62 is composed of an outer frame 6 made of a magnetic material.
In this structure, an armature coil 68 having an iron core 67 is mounted in the central portion of 6 and excitation coils 69 are mounted in the front and rear ends of the rotation axis C direction. In the rotating electric machine of this embodiment, the exciting coil 69 and the permanent magnet 64 form the magnetic circuit 70 in a form of supplementing the magnetic force of the exciting coil 69 by the permanent magnet 64, and thus the exciting coil 69 has been conventionally required. A smaller size is used, and the dimension of the outer frame 66 in the direction of the rotation axis is shortened accordingly.

Next, the first embodiment of the invention of the method of manufacturing the magnetic pole rotor 61 used in the third embodiment of the invention of the rotary electric machine shown in FIG. 12 will be described with reference to FIGS. 13 to 15. explain. First, as shown in FIG. 13, a cylindrical nickel-chromium-molybdenum steel (SNCM630) is used as the magnetic material 65 of nickel-containing alloy steel, and an elliptical disk containing 25% of nickel is contained as the non-magnetic material 63 of nickel-based alloy. Alloy Inconel 718 is used, and a ring-shaped samarium-cobalt magnet or neodymium-iron-boron magnet is used as the permanent magnet 64, and each member is processed into a shape in which they are combined with each other, and mirror-finished.

Then, at least one joint surface between the non-magnetic material 63 and the magnetic material 65, at least one joint surface between the permanent magnet 64 and the magnetic material 65, here, both joint surfaces of the non-magnetic material 63, and the permanent magnet. A nickel plating layer 71 having a thickness of about 100 μm is formed on the joint surface 64. The interposition of the nickel-plated layer 71 prevents the oxidation of the iron component particularly contained in the magnetic material 65, and makes the finishing strength in the subsequent HIP step ideal.

Next, these non-magnetic material 63 and magnetic material 6
5 and 65 and the permanent magnets 64 and 64 are combined, as shown in FIG.
As shown in FIG. 4, it is housed in a HIP can 72, covered with a lid 73 and sealed, and then housed in a heating furnace. Then, an inert gas such as argon gas is injected, and 1200 ° C.
HIP (hot isotropic pressure pressurization) is performed for about 2 hours under the condition of 00 atm to bond the non-magnetic material 63 and the magnetic material 65 together.
Further, solid-phase bonding is performed by causing mutual diffusion at the bonding interface between the permanent magnet 64 and the magnetic material 65.

The two-pole comb-shaped magnetic pole rotor 61 thus obtained by the HIP method is shown in FIG. 15, but the nickel plating layer 71 existing at the joining interface by the solid-state joining by HIP is joined between the respective members. The original nickel plating layer 71 disappears as it diffuses from the interface to the inside,
An interdiffusion layer is formed near the original interface.

In the first embodiment of the invention of the method for manufacturing a comb-shaped magnetic pole rotor, the magnetic material 65 is replaced by nickel-chromium-molybdenum steel, and low alloy steel containing several percent nickel, for example, 9 percent. Nickel alloy steel can be used, and even in that case, the magnetic pole rotor 61 can be manufactured by the HIP method under substantially the same conditions as described above. Further, the strength of the joint interface of the magnetic pole rotor 61 produced is almost the same.

Next, the second embodiment of the invention of the method for manufacturing the comb-shaped magnetic pole rotor used in the third embodiment of the invention of the rotary electric machine will be described with reference to FIG. First, a cylindrical nickel-chromium-molybdenum steel (SNCM630) is used as the magnetic material 65 of nickel-containing alloy steel, and an elliptical disc-shaped superalloy Inconel 718 containing 25% of nickel is used as the non-magnetic material 63 of nickel-based alloy. A samarium-cobalt magnet or a neodymium-iron-boron magnet is used as the permanent magnet 64, and the joint surfaces of these members are processed and molded into a shape that is combined with each other and mirror-finished.

Between the non-magnetic material 63 and the magnetic material 65,
Further, the nickel foils 74 and 75 having a thickness of about 100 μm are interposed between the permanent magnet 64 and the magnetic material 65 to assemble the respective members, and as shown in FIG.
As shown in FIG. Then, it is housed in a heating furnace, then an inert gas such as argon gas is injected, and the temperature is set to 1200 ° C.
HIP is performed for about 2 hours under the condition of 1000 atm to bond the non-magnetic material 63 and the magnetic material 65 together with the permanent magnet 6.
The solid-phase bonding is performed by causing mutual diffusion at the bonding interface between the magnetic material 4 and the magnetic material 65.

The two-pole comb-shaped magnetic pole rotor 61 thus obtained by the HIP method is similar to that obtained in the first embodiment as shown in FIG. 15, and nickel foil is formed by solid-state joining by HIP. 74, 75 diffused inward from the bonding interface of each member, and the original nickel foils 74, 7
5 disappears and an interdiffusion layer is formed near the original interface.

The 2-pole comb-shaped magnetic pole rotor 6 thus obtained
1 shows almost the same strength as that obtained in the first embodiment of the invention of the above manufacturing method.

In the second embodiment of the invention of the above manufacturing method, a low alloy steel containing a few percent nickel, for example, a 9 percent nickel alloy steel, is used as the magnetic material 65 instead of the nickel chrome molybdenum steel. In that case, the magnetic pole rotor can be manufactured by the HIP method under almost the same conditions as above. Further, the strength of the joint interface of the magnetic pole rotor 61 produced is almost the same.

Further, in each of the first and second embodiments of the invention of the above-mentioned manufacturing method, the temperature condition as the condition of the HIP method is the temperature condition just before the material used changes from the solid phase to the liquid phase, and the pressure condition is as high as possible. Although desirable, it is not particularly limited. Further, the HIP time is not particularly limited within the range of several tens of minutes to several hours. Further nickel plated layer 7
1 can be formed on the side of the non-magnetic material 73, and can also be formed on the joint surfaces of all the members. The thickness of each of the nickel plating layer 71 and the nickel foils 74 and 75 can be set to several tens of microns to hundreds of tens of microns.

The two-pole comb-shaped magnetic pole rotor 61 used in the third embodiment of the invention of the rotating electric machine shown in FIG. 12 is manufactured by the first and second embodiments of the invention. The invention is not limited to the example, and the non-magnetic material 63 of nickel-based alloy, the permanent magnet 64, and the magnetic material 65 of alloy steel containing nickel are joined, and a nickel diffusion layer is formed at the joining interface between the members. A magnetic pole rotor having a structured structure, even if obtained by other methods, also has a large strength and is particularly suitable for use as a rotor of an ultrahigh-speed rotating electric machine. Becomes

[0092]

As described above, according to the comb-shaped magnetic pole rotor of the invention of claim 1, the permanent magnet is attached to the radial center of the non-magnetic material of the nickel-base alloy to rotate the non-magnetic material and the permanent magnet. A magnetic material of alloy steel containing nickel is bonded to both front and rear surfaces in the axial direction, and a nickel diffusion layer is formed at this bonding interface.Therefore, a decarburization layer or carbonization layer is formed at the bonding interface between the non-magnetic material or permanent magnet and the magnetic material. The layer does not exist, the bonding strength is increased, and the magnetic pole rotor can withstand ultra-high speed rotation. Moreover, since a permanent magnet is provided in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine,
A part or all of the exciting coil to be provided on the stator side can be replaced by a permanent magnet, and by making the exciting coil on the stator side smaller or eliminated, the rotating electric machine can be downsized.

According to the comb-shaped magnetic pole rotor of the second aspect of the present invention, a nickel-containing superalloy is used as the non-magnetic material, and nickel-chromium-molybdenum steel is used as the magnetic material. Since a nickel diffusion layer is formed at the joint interface with the material, there is no decarburization layer or carbonized layer at the joint interface between the non-magnetic material and the permanent magnet and the magnetic material, the joint strength increases and it withstands ultra-high speed rotation. It can be a magnetic pole rotor. Further, since a permanent magnet is provided in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is provided by the permanent magnet. It can be replaced, and by extension, the size of the rotating electric machine can be reduced by reducing or eliminating the exciting coil on the stator side.

According to the comb-shaped magnetic pole rotor of the third aspect of the present invention, the non-magnetic material of the nickel-base alloy and the permanent magnet are sandwiched by the magnetic material of 9% nickel alloy steel from both the front and rear sides in the rotation axis direction, and the joining interface is formed. Since the nickel diffusion layer is formed, there is no decarburization layer or carbonized layer at the bonding interface between the non-magnetic material or permanent magnet and the magnetic material, the bonding strength increases, and the magnetic pole rotor should withstand ultra-high speed rotation. You can Further, since a permanent magnet is provided in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is provided by the permanent magnet. It can be replaced, and by extension, the size of the rotating electric machine can be reduced by reducing or eliminating the exciting coil on the stator side.

According to the comb-shaped magnetic pole rotor of the fourth aspect of the present invention, since it has the two-pole comb-shaped structure, it is possible to form a magnetic pole rotor for ultra-high speed rotation.

According to the method for manufacturing a comb-shaped magnetic pole rotor of the fifth aspect of the present invention, an alloy steel containing nickel on both front and rear sides in the rotation axis direction of a non-magnetic material of nickel-base alloy having a permanent magnet attached to the central portion. The magnetic material is arranged so that the nickel layer is present on at least one of the opposing surfaces, and the nonmagnetic material and the permanent magnet and the magnetic material are diffusion-bonded by the hot isostatic pressing method. To obtain a magnetic pole rotor that grows a nickel diffusion layer at the bonding interface between a non-magnetic material or a permanent magnet and a magnetic material, has a large bonding strength without a decarburized layer or a carbonized layer at the bonding interface, and can withstand ultra-high speed rotation. You can

According to the method for manufacturing a comb-shaped magnetic pole rotor of the sixth aspect of the present invention, the surface of the nonmagnetic material and the permanent magnet facing the magnetic material, or the surface of the magnetic material facing the nonmagnetic material and the permanent magnet is formed. Since a nickel plating layer is formed on at least one side and the nonmagnetic material and the permanent magnet are magnetically bonded to the magnetic material by the hot isostatic pressing method, nickel is diffused at the bonding interface between the nonmagnetic material and the permanent magnet and the magnetic material. It is possible to obtain a magnetic pole rotor that grows the layers and has a large joining strength without a decarburized layer or a carbonized layer at the joining interface and can withstand ultra-high speed rotation.

According to the method of manufacturing a comb-shaped magnetic pole rotor of the invention of claim 7, a nickel foil is interposed between the facing surfaces of the non-magnetic material and the permanent magnet and the magnetic material, and the hot isostatic pressing method is used. Since the non-magnetic material and the permanent magnet and the magnetic material are diffusion-bonded, a nickel diffusion layer is grown at the bonding interface between the non-magnetic material and the magnetic material, and the decarburization layer or the carbonized layer does not exist at the bonding interface, and the bonding strength is increased. It is possible to obtain a large magnetic pole rotor that can withstand ultra-high speed rotation.

According to the rotating electric machine of the present invention, a permanent magnet is attached to the stator in which the armature coil and the exciting coil are mounted, and the non-magnetic material of the nickel-based alloy in the radial center thereof. The magnetic material of alloy steel containing nickel is bonded to both the front and rear surfaces of the permanent magnet and the permanent magnet in the direction of the rotation axis, and a comb-shaped magnetic pole rotor having a nickel diffusion layer formed at the bonding interface is provided. Part of the magnetic force of the exciting coil on the stator side is supplemented by the permanent magnet provided on the child side,
Therefore, the size required for the exciting coil can be reduced, and the size of the entire rotary electric machine can be reduced accordingly.

According to the rotating electric machine of the ninth aspect of the invention, it corresponds to the stator to which the armature coil is attached and the exciting coil to be attached to the stator at the radial center of the non-magnetic material of nickel-based alloy. A permanent magnet having a large magnetic force is attached, magnetic materials made of alloy steel containing nickel are bonded to the front and rear surfaces of the non-magnetic material and the permanent magnet in the direction of the rotation axis, and a nickel diffusion layer is formed at the bonding interface. Since the magnetic pole rotor is provided, the permanent magnet provided on the comb magnetic pole rotor side does not require an exciting coil on the stator side.
The size of the frame on the side of the stator can be reduced, and thus the size of the entire rotating electrical machine can be reduced.

According to the tenth aspect of the present invention, the magnetic pole rotor includes the magnetic material made of alloy steel containing nickel, which is joined to the front and rear surfaces of the non-magnetic material of nickel base alloy in the direction of the rotation axis. Since permanent magnets are embedded at the front and rear ends of the direction, and nickel diffusion layers are formed at the joint interface between the non-magnetic material and the magnetic material and the joint interface between the magnetic material and the permanent magnet, Since there is no decarburized layer or carbonized layer at each joint interface with the permanent magnet, the joint strength is increased and the magnetic pole rotor can withstand ultra-high speed rotation. Further, since a permanent magnet is provided in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is provided by the permanent magnet. It can be replaced, and by extension, the size of the rotating electric machine can be reduced by reducing or eliminating the exciting coil on the stator side.

According to the eleventh aspect of the invention, the comb magnetic pole rotor uses a nickel-containing superalloy as the non-magnetic material, uses nickel chrome molybdenum steel as the magnetic material, and joins the non-magnetic material with the magnetic material. In addition, since the nickel diffusion layer is formed at the joint interface between the magnetic material and the permanent magnet, there is no decarburization layer or carbonized layer at each joint interface between the non-magnetic material, the magnetic material and the permanent magnet, and the joint strength is In addition, the magnetic pole rotor can withstand ultra-high speed rotation. Further, since a permanent magnet is provided in a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is provided by the permanent magnet. It can be replaced, and by extension, the size of the rotating electric machine can be reduced by reducing or eliminating the exciting coil on the stator side.

According to the comb-shaped magnetic pole rotor of the invention of claim 12, 9% nickel alloy steel is used as the magnetic material, the bonding interface between the non-magnetic material and the magnetic material, and the bonding between the magnetic material and the permanent magnet. Since the nickel diffusion layer is formed at the interface, there is no decarburization layer or carbonized layer at the joining interface between the non-magnetic material, magnetic material and permanent magnet, increasing the joining strength and rotating the magnetic pole to withstand ultra-high speed rotation. Can be a child. Further, by providing a permanent magnet on a part of the magnetic pole rotor, when this magnetic pole rotor is used as a rotor of a comb-shaped magnetic pole rotating electric machine, a part or all of the exciting coil to be provided on the stator side is replaced by the permanent magnet. The size of the rotating electric machine can be reduced by reducing or eliminating the exciting coil on the stator side.

According to the comb-shaped magnetic pole rotor of the thirteenth aspect of the present invention, since the magnetic pole rotor has a two-pole comb shape, it is possible to form a magnetic pole rotor for ultra-high speed rotation.

According to the method for manufacturing a comb-shaped magnetic pole rotor of the fourteenth aspect of the present invention, the magnetic material of the alloy steel containing nickel is provided on the front and rear sides of the non-magnetic material of the nickel-base alloy in the front-and-rear direction in the rotation axis direction. At least one of which has a nickel layer interposed therebetween, a permanent magnet is provided at the outer end of each magnetic material in the rotation axis direction, and a nickel layer is provided at least on one of the facing surfaces thereof. Since the non-magnetic material, the magnetic material, and the permanent magnet are diffusion bonded by the hot isostatic pressing method, a nickel diffusion layer is formed at each bonding interface between the non-magnetic material, the magnetic material, and the permanent magnet. It is possible to obtain a magnetic pole rotor that is grown and has a large bonding strength without a decarburized layer or a carbonized layer at the bonding interface and can withstand ultra-high speed rotation.

According to the method of manufacturing a comb-shaped magnetic pole rotor of the fifteenth aspect of the present invention, a nickel plating layer is provided on at least one of the facing surfaces of the non-magnetic material and the magnetic material and the facing surface of the magnetic material and the permanent magnet. And the non-magnetic material, the magnetic material, and the permanent magnet are diffusion bonded by the hot isostatic pressing method.Therefore, a nickel diffusion layer is formed at each bonding interface between the non-magnetic material, the magnetic material, and the permanent magnet. It is possible to obtain a magnetic pole rotor that is grown and has a large bonding strength without a decarburized layer or a carbonized layer at the bonding interface and can withstand ultra-high speed rotation.

According to the method for manufacturing a comb-shaped magnetic pole rotor of the sixteenth aspect of the present invention, nickel foil is interposed between the facing surfaces of the non-magnetic material and the magnetic material and between the facing surfaces of the magnetic material and the permanent magnet. Since the non-magnetic material, the magnetic material and the permanent magnet are diffusion-bonded by the hot isostatic pressing method, a nickel diffusion layer is grown and bonded at each bonding interface of the non-magnetic material, the magnetic material and the permanent magnet. Since there is no decarburized layer or carbonized layer at the interface, the bonding strength is large, and a magnetic pole rotor that can withstand ultra-high speed rotation can be obtained.

According to the rotating electric machine of the seventeenth aspect of the present invention, the stator having the armature coil and the exciting coil mounted thereon and the alloy steel containing nickel on the front and rear surfaces of the non-magnetic material of the nickel base alloy in the rotation axis direction are formed. Magnetic materials are bonded, permanent magnets are embedded at the front and rear ends of the magnetic material in the direction of the rotation axis, and nickel diffusion layers are formed at the bonding interface between the non-magnetic material and the magnetic material and at the bonding interface between the magnetic material and the permanent magnet. Since it is equipped with a comb-shaped magnetic pole rotor, a part of the magnetic force of the exciting coil on the stator side is supplemented by a permanent magnet provided on the side of the comb-shaped magnetic pole rotor, and the size required for the exciting coil Can be reduced, and in turn, the overall size of the rotary electric machine can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a comb-shaped magnetic pole rotor according to the present invention and a rotary electric machine using the same.

FIG. 2 is a cross-sectional view showing the material constitution of the first embodiment of the manufacturing method of the first embodiment of the above comb-shaped magnetic pole rotor.

FIG. 3 is a cross-sectional view showing a HIP processing step of the first embodiment of the above manufacturing method.

FIG. 4 is a perspective view of a comb-shaped magnetic pole rotor obtained in the first embodiment of the manufacturing method.

FIG. 5 is a cross-sectional view showing a material configuration of a second embodiment of the manufacturing method of the first embodiment of the comb-shaped magnetic pole rotor.

FIG. 6 is a sectional view showing a HIP processing step of the second embodiment of the manufacturing method.

FIG. 7 is a sectional view of a second embodiment of a comb-shaped magnetic pole rotor according to the present invention and a rotary electric machine using the same.

FIG. 8 is a cross-sectional view showing the material constitution of the first embodiment of the manufacturing method of the second embodiment of the above comb-shaped magnetic pole rotor.

FIG. 9 is a sectional view showing a HIP processing step of the first embodiment of the manufacturing method.

FIG. 10 is a perspective view of a comb-shaped magnetic pole rotor obtained in the first embodiment of the manufacturing method.

FIG. 11 is a cross-sectional view showing a material configuration of a second embodiment of the manufacturing method of the first embodiment of the above comb-shaped magnetic pole rotor.

FIG. 12 is a cross-sectional view of a third embodiment of a comb-shaped magnetic pole rotor according to the present invention and a rotary electric machine using the same.

FIG. 13 is a cross-sectional view showing the material constitution of the first embodiment of the manufacturing method of the third embodiment of the above comb-shaped magnetic pole rotor.

FIG. 14 is a cross-sectional view showing a HIP processing step of the first embodiment of the manufacturing method.

FIG. 15 is a perspective view of a comb-shaped magnetic pole rotor obtained in the first embodiment of the manufacturing method.

FIG. 16 is a cross-sectional view showing the material configuration of a second embodiment of the method for manufacturing the third embodiment of the above comb-shaped magnetic pole rotor.

FIG. 17 is a cross-sectional view of a conventional comb-shaped magnetic pole rotor and a rotating electric machine using the same.

[Explanation of symbols]

 11 Rotor 12 Stator 13 Non-Magnetic Material 14 Permanent Magnet 15 Magnetic Material 16 Outer Frame 17 Iron Core 18 Armature Coil 19 Excitation Coil 20 Magnetic Circuit 21 Magnetic Circuit 31 Nickel Plating Layer 32 Can 33 Lid 34 Nickel Foil 41 Rotor 42 Fixed Child 43 Non-magnetic material 44 Permanent magnet 45 Magnetic material 46 Outer frame 47 Iron core 48 Armature coil 49 Magnetic circuit 51 Nickel plating layer 52 Can 53 53 Lid 54 Nickel foil 61 Rotor 62 Stator 63 Non-magnetic material 64 Permanent magnet 65 Magnetic material 71 Nickel Plating Layer 72 Can 73 Lid 74 Nickel Foil 75 Nickel Foil

Claims (17)

[Claims] 1. A non-magnetic material of a nickel-base alloy, a permanent magnet is attached to a central portion in a radial direction, and a magnetic material of an alloy steel containing nickel is bonded to both front and rear surfaces of the non-magnetic material and the permanent magnet in a rotation axis direction. , A comb-shaped magnetic pole rotor having a nickel diffusion layer formed at this junction interface. 2. The comb magnetic pole rotor according to claim 1, wherein the non-magnetic material is a nickel-containing superalloy and the magnetic material is nickel chromium molybdenum steel. 3. The comb magnetic pole rotor according to claim 1, wherein the magnetic material is 9% nickel alloy steel. 4. The comb-shaped magnetic pole rotor according to claim 1, wherein the comb-shaped magnetic pole rotor has a two-pole comb shape. 5. A non-magnetic material of a nickel-base alloy having a permanent magnet attached to the center thereof is provided with a magnetic material of an alloy steel containing nickel on both front and rear sides in the rotation axis direction, and nickel is provided on at least one of opposing surfaces thereof. A method for manufacturing a comb-shaped magnetic pole rotor, characterized in that the layers are arranged so that the layers are interposed, and the non-magnetic material and the permanent magnet and the magnetic material are diffusion-bonded by a hot isostatic pressing method. 6. A nickel plating layer is formed on at least one of a surface of the non-magnetic material and the permanent magnet facing the magnetic material, or a surface of the magnetic material facing the non-magnetic material and the permanent magnet. The method of manufacturing a comb-shaped magnetic pole rotor according to claim 5, wherein the non-magnetic material, the permanent magnet, and the magnetic material are diffusion-bonded by an isotropic pressure pressing method. 7. A nickel foil is interposed between the facing surfaces of the non-magnetic material and the permanent magnet and the magnetic material, and the non-magnetic material and the permanent magnet and the magnetic material are diffusion-bonded by a hot isostatic pressing method. The method of manufacturing a comb-shaped magnetic pole rotor according to claim 5, wherein 8. A stator to which an armature coil and an exciting coil are mounted, and a permanent magnet is attached to a radial center portion of a non-magnetic material of nickel-based alloy, and the permanent magnet is attached to the non-magnetic material and the permanent magnet in a rotational axis direction. A rotating electric machine comprising: a magnetic material made of an alloy steel containing nickel on both front and rear surfaces; and a comb-shaped magnetic pole rotor having a nickel diffusion layer formed on the bonding interface. 9. A stator to which an armature coil is mounted, and a permanent magnet having a magnetic force of a magnitude corresponding to an exciting coil to be mounted on the stator in a radial center portion of a non-magnetic material of nickel-based alloy. The non-magnetic material and the permanent magnet are combined with magnetic material of alloy steel containing nickel on both front and rear surfaces in the rotation axis direction of the non-magnetic material and the permanent magnet, and a comb-shaped magnetic pole rotor having a nickel diffusion layer formed at the bonding interface is provided. A rotating electric machine consisting of. 10. A non-magnetic material of a nickel-base alloy is joined with magnetic materials of alloy steel containing nickel on both front and rear surfaces in the rotation axis direction, and permanent magnets are embedded at front and rear ends of the magnetic material in the rotation axis direction. A comb-shaped magnetic pole rotor in which a nickel diffusion layer is formed at a joint interface between the non-magnetic material and the magnetic material and a joint interface between the magnetic material and the permanent magnet. 11. The comb magnetic pole rotor according to claim 10, wherein the non-magnetic material is a nickel-containing superalloy and the magnetic material is nickel chromium molybdenum steel. 12. The comb magnetic pole rotor according to claim 10, wherein the magnetic material is 9% nickel alloy steel. 13. The comb-shaped magnetic pole rotor according to claim 10, wherein the comb-shaped magnetic pole rotor has a two-pole comb shape. 14. A magnetic material of alloy steel containing nickel is arranged on both front and rear sides of a non-magnetic material of a nickel base alloy in a rotation axis direction such that a nickel layer is interposed on at least one of opposing surfaces thereof. , A permanent magnet at the end of each magnetic material in the direction of the rotation axis,
A comb characterized in that a nickel layer is disposed so as to intervene on at least one of the facing surfaces, and the nonmagnetic material, the magnetic material, and the permanent magnet are diffusion bonded by a hot isostatic pressing method. Of manufacturing a pole-shaped magnetic pole rotor. 15. A nickel plating layer is formed on at least one of the opposing surfaces of the non-magnetic material and the magnetic material and the opposing surface of the magnetic material and the permanent magnet, and the non-magnetic material is applied by a hot isostatic pressing method. 15. The method for manufacturing a comb-shaped magnetic pole rotor according to claim 14, wherein the magnetic material, the magnetic material, and the permanent magnet are diffusion-bonded. 16. Between the facing surfaces of the non-magnetic material and the magnetic material,
And a nickel foil interposed between the facing surfaces of the magnetic material and the permanent magnet, and the nonmagnetic material, the magnetic material, and the permanent magnet are diffusion-bonded by a hot isostatic pressing method. 14. The method for manufacturing a comb-shaped magnetic pole rotor according to 14. 17. A stator to which an armature coil and an exciting coil are mounted, and a magnetic material of alloy steel containing nickel is joined to both front and rear surfaces of a non-magnetic material of nickel-based alloy in a rotation axis direction. A comb-shaped magnetic pole rotor in which a permanent magnet is embedded at each of front and rear ends in the rotation axis direction, and a nickel diffusion layer is formed at a joint interface between the non-magnetic material and the magnetic material and a joint interface between the magnetic material and the permanent magnet. A rotating electric machine comprising.