Spatial oblique orientation neodymium iron boron product processing and preparing method

Abstract

The invention discloses a space oblique orientation neodymium iron boron product processing preparation method, and belongs to the technical field of neodymium iron boron, neodymium iron boron powder is sintered to form a neodymium iron boron blank with an oblique magnetic direction, the neodymium iron boron blank is a cuboid or a cube, three mutually perpendicular sides of the neodymium iron boron blank coincide with three coordinate axes of an XYZ space coordinate system, and the neodymium iron boron powder is sintered to form a space oblique orientation neodymium iron boron product. The inclined magnetic direction of the neodymium iron boron blank is inclined on any surface in an XYZ space coordinate system; the neodymium-iron-boron blank is deflected with any point in the magnetic direction as the center, the magnetic direction is driven to deflect so as to intersect with the plane where the neodymium-iron-boron blank is located, an included angle is formed between the magnetic direction and the plane where the neodymium-iron-boron blank is located, the magnetic direction has projections on the three planes of the XYZ space coordinates, and therefore the magnetic direction of the neodymium-iron-boron blank is inclined in the space; and vertically cutting the neodymium-iron-boron blank from top to bottom so as to cut the neodymium-iron-boron product with the spatial oblique orientation magnetic direction. According to the method, the steps of preparing the neodymium iron boron product with spatial oblique orientation are simplified.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB, and in particular to a method for processing and preparing a spatially obliquely oriented NdFeB product. Background Art

[0002] In the sintering process of the blanks used in the processing of NdFeB products, achieving the skewed orientation of the magnetic field in two directions (i.e., spatial oblique orientation) is a complex technical challenge. This orientation usually requires precise control of the direction and strength of the magnetic field to ensure that the magnetic domains are arranged at the desired spatial angle, and the magnetic field must remain highly uniform throughout the blank volume, otherwise it will lead to inconsistent magnetic properties in local areas, which is particularly difficult in blanks of large size or complex shape.

[0003] To ensure precise control of the direction of the magnetic field, it is usually necessary to use complex magnetic field generating equipment, such as electromagnetic coil arrays, using a combination of multiple electromagnetic coils to generate the required composite magnetic field, arranged in a specific geometric shape, such as Helmholtz coils or more complex multi-coil systems. In some cases, permanent magnets and electromagnetic coils can be used in combination to produce a more uniform and stable magnetic field; this usually requires the use of complex magnetic field generating equipment, and the use of numerical simulation software (such as finite element analysis software) to calculate and optimize the magnetic field distribution to ensure uniform magnetic field strength at the required spatial angle. The direction of the magnetic field can be controlled by adjusting the position of the coil and the current passing through the coil; a three-dimensional magnetic field sensor is used to monitor the direction and strength of the magnetic field in real time for fine-tuning, which may require multiple experiments and debugging. Therefore, advanced equipment and technology are required to achieve high-precision magnetic field orientation control, resulting in high manufacturing costs. Summary of the invention

[0004] The purpose of the present invention is to provide a method for processing and preparing a spatially obliquely oriented NdFeB product, so that the manufacturing steps of the spatially obliquely oriented magnetic direction of the NdFeB product are simple and the manufacturing efficiency of the NdFeB product with a spatially obliquely oriented magnetic direction is improved.

[0005] To achieve the above object, the solution of the present invention is: A method for processing and preparing a spatially obliquely oriented NdFeB product comprises the following steps: sintering NdFeB powder to form a NdFeB blank with an inclined magnetic direction, wherein the NdFeB blank is in the form of a cuboid or a cube, and three mutually perpendicular sides of the NdFeB blank coincide with three coordinate axes of an XYZ space coordinate system, and the inclined magnetic direction of the NdFeB blank is inclined on any plane in the XYZ space coordinate system; taking any point in the magnetic direction as the center, the NdFeB blank is deflected to drive the magnetic direction to deflect so as to intersect with the plane where the magnetic direction is located, so as to form an angle between the magnetic direction and the plane where the magnetic direction is located, and so as to have projections on the three planes of the XYZ space coordinate system, so as to make the magnetic direction of the NdFeB blank inclined in space; vertical cutting is performed from top to bottom on the NdFeB blank to cut out a NdFeB product with a spatially obliquely oriented magnetic direction.

[0006] Specifically, by sintering NdFeB powder, a NdFeB blank with an inclined magnetic direction is formed. The NdFeB blank is in the shape of a cuboid or a cube. The three mutually perpendicular sides of the NdFeB blank coincide with the three coordinate axes of the XYZ space coordinate system, and the inclined magnetic direction of the NdFeB blank is inclined on the YOZ plane or the XOZ plane in the XYZ space coordinate system; with any point in the magnetic upward direction as the center, the NdFeB blank is horizontally deflected to drive the magnetic direction to deflect so as to intersect with the surface where it is located, so that an angle is formed between the magnetic direction and the surface where it is located, and when the NdFeB blank is deflected, its bottom surface always coincides with the XOY plane, and the magnetic direction has projections on the three planes of the XYZ space coordinate system, so that the magnetic direction of the NdFeB blank is inclined in space; on the NdFeB blank, vertical cutting is performed from top to bottom to cut out a NdFeB product with a spatially oblique magnetic orientation.

[0007] Furthermore, the NdFeB blank is placed in the XYZ space rectangular coordinate system, the magnetic direction is inclined on the XOZ plane, the lower end of the magnetic direction coincides with the origin, and the NdFeB blank is horizontally deflected with the lower end of the magnetic direction as the center, driving the magnetic direction to deflect and intersect with the XOZ plane, so that an angle is formed between the magnetic direction and the XOZ plane, and the magnetic direction is projected on the XOY plane, the XOZ plane and the YOZ plane, and then the NdFeB blank is vertically cut from top to bottom to form a NdFeB finished product.

[0008] After adopting the above scheme, the beneficial effects of the present invention are: The invention forms a NdFeB blank with an inclined magnetic direction by sintering NdFeB powder. The NdFeB blank is in the shape of a cuboid or a cube. Three mutually perpendicular sides of the NdFeB blank coincide with three coordinate axes of an XYZ space coordinate system. The inclined magnetic direction of the NdFeB blank is inclined on any one of the planes in the XYZ space coordinate system. The NdFeB blank is deflected with any point in the magnetic direction as the center to drive the magnetic direction to deflect so as to intersect with the plane where the magnetic direction is located, so as to form an angle between the magnetic direction and the plane where the magnetic direction is located, and so as to have projections on the three planes of the XYZ space coordinate system, so as to make the magnetic direction of the NdFeB blank inclined in space. Vertical cutting is performed from top to bottom on the NdFeB blank to cut out a NdFeB product with a spatially obliquely oriented magnetic direction. The present invention simplifies the steps of preparing NdFeB products with spatial oblique orientation, and the preparation steps are relatively simple, without the need for advanced equipment and technology, thereby reducing manufacturing costs, improving manufacturing efficiency, and saving more materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a projection diagram of the spatial obliquely oriented magnetic NdFeB product prepared by the present invention in the XYZ space coordinate system; Figure 2 It is a schematic diagram of the magnetic direction deflection on the YOZ plane of the present invention. DETAILED DESCRIPTION

[0010] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] like Figure 1 to Figure 2 As shown, the present embodiment provides a method for processing and preparing a spatially obliquely oriented NdFeB product, by sintering NdFeB powder to form a NdFeB blank with an inclined magnetic direction, the NdFeB blank is in the shape of a cuboid or a cube, and the three mutually perpendicular sides of the NdFeB blank coincide with the three coordinate axes of the XYZ space coordinate system, and the inclined magnetic direction of the NdFeB blank is inclined on any one of the planes in the XYZ space coordinate system; with any point in the magnetic direction as the center, the NdFeB blank is deflected to drive the magnetic direction to deflect to intersect with the plane where it is located, so that an angle is formed between the magnetic direction and the plane where it is located, and the magnetic direction has projections on the three planes of the XYZ space coordinate system, so that the magnetic direction of the NdFeB blank is inclined in space; on the NdFeB blank, vertical cutting is performed from top to bottom to cut out a NdFeB product with a spatially obliquely oriented magnetic direction.

[0012] The present invention simplifies the steps of preparing NdFeB products with spatial oblique orientation, and the preparation steps are relatively simple, without the need for advanced equipment and technology, thereby reducing manufacturing costs and improving manufacturing efficiency.

[0013] Specifically, a NdFeB blank with an inclined magnetic direction is formed by sintering NdFeB powder, the NdFeB blank is in the shape of a cuboid or a cube, three mutually perpendicular sides of the NdFeB blank coincide with three coordinate axes of an XYZ space coordinate system, and the inclined magnetic direction of the NdFeB blank is inclined on a YOZ plane or an XOZ plane in the XYZ space coordinate system; With any point in the magnetic direction as the center, the NdFeB blank is horizontally deflected to drive the magnetic direction to deflect and intersect with the surface, so that an angle is formed between the magnetic direction and the surface, and when the NdFeB blank is deflected, its bottom surface always coincides with the XOY plane, and the magnetic direction has projections on the three planes of the XYZ space coordinates, so that the magnetic direction of the NdFeB blank is tilted in space; Vertical cutting is performed from top to bottom on the NdFeB blank to cut out a NdFeB product with a spatially obliquely oriented magnetic direction. This embodiment enables the NdFeB blank to be cut in a horizontal state to form a finished product with a spatially obliquely oriented magnetic direction, which is easy to operate and saves more materials.

[0014] Specifically, the NdFeB blank is placed in the XYZ space rectangular coordinate system, the magnetic direction is inclined on the XOZ plane, the lower end of the magnetic direction coincides with the origin, and the NdFeB blank is horizontally deflected with the lower end of the magnetic direction as the center to drive the magnetic direction to deflect and intersect with the XOZ plane, so that an angle is formed between the magnetic direction and the XOZ plane, and the magnetic direction is projected on the XOY plane, the XOZ plane and the YOZ plane, and then the NdFeB blank is vertically cut from top to bottom to form a NdFeB finished product.

[0015] Specifically, a NdFeB blank is manufactured by sintering, wherein the magnetic direction of the blank is inclined on the XOZ plane, and the inclined magnetic direction is deflected 35° from the X-axis to the Z-axis, and then the blank is swung around the lower end of the inclined magnetic direction, so that the magnetic direction and the XOZ plane are crossed, and an angle is formed between the magnetic direction and the XOZ plane, so that the magnetic direction forms projections on the XOY plane, the YOZ plane and the XOZ plane, and the projection of the magnetic direction on the XOY plane is deflected 29.5° from the X-axis to the Y-axis, the projection of the magnetic direction on the YOZ plane is deflected 40° from the Z-axis to the Y-axis, and the projection of the magnetic direction on the XOZ plane is deflected 35° from the X-axis to the Z-axis, thereby forming a spatial oblique orientation of the magnetic direction, and then the NdFeB blank is vertically cut from top to bottom to cut out a NdFeB product with a spatially obliquely oriented magnetic direction in the NdFeB blank.

[0016] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A method for processing and preparing a spatially obliquely oriented NdFeB product, characterized in that: By sintering NdFeB powder, a NdFeB blank with an inclined magnetic direction is formed. The NdFeB blank is a rectangular parallelepiped or a cube. The three mutually perpendicular sides of the NdFeB blank coincide with the three coordinate axes of the XYZ space coordinate system. The inclined magnetic direction of the NdFeB blank is inclined on any plane in the XYZ space coordinate system. With any point in the magnetic direction as the center, deflect the NdFeB blank to drive the magnetic direction to deflect and intersect with the surface, so that an angle is formed between the magnetic direction and the surface, and the magnetic direction has projections on the three planes of the XYZ space coordinates, so that the magnetic direction of the NdFeB blank is tilted in space; On the NdFeB blank, vertical cutting is performed from top to bottom to cut out NdFeB products with spatial oblique magnetic orientation.

2. The method for processing and preparing a spatially obliquely oriented NdFeB product according to claim 1, characterized in that: By sintering NdFeB powder, a NdFeB blank with an inclined magnetic direction is formed. The NdFeB blank is a rectangular parallelepiped or a cube. The three mutually perpendicular sides of the NdFeB blank coincide with the three coordinate axes of the XYZ space coordinate system. The inclined magnetic direction of the NdFeB blank is inclined on the YOZ plane or the XOZ plane in the XYZ space coordinate system. With any point in the magnetic direction as the center, the NdFeB blank is horizontally deflected to drive the magnetic direction to deflect and intersect with the surface, so that an angle is formed between the magnetic direction and the surface, and when the NdFeB blank is deflected, its bottom surface always coincides with the XOY plane, and the magnetic direction has projections on the three planes of the XYZ space coordinates, so that the magnetic direction of the NdFeB blank is tilted in space; On the NdFeB blank, vertical cutting is performed from top to bottom to cut out NdFeB products with spatial oblique magnetic orientation.

3. A method for processing and preparing a spatially obliquely oriented NdFeB product as claimed in claim 2, characterized in that: Place the NdFeB blank in the XYZ space rectangular coordinate system, with the magnetic direction tilted on the XOZ plane, the lower end of the magnetic direction coincides with the origin, and the NdFeB blank is horizontally deflected with the lower end of the magnetic direction as the center, driving the magnetic direction to deflect and intersect with the XOZ plane, so that an angle is formed between the magnetic direction and the XOZ plane, and the magnetic direction is projected on the XOY plane, the XOZ plane and the YOZ plane, and then the NdFeB blank is vertically cut from top to bottom to form a NdFeB finished product.

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