CN-121662589-B - Magnetic steel forming accurate control method and system based on magnetic field orientation

CN121662589BCN 121662589 BCN121662589 BCN 121662589BCN-121662589-B

Abstract

The invention relates to the technical field of artificial intelligent regulation and control, in particular to a magnetic steel forming accurate control method and system based on magnetic field orientation, comprising the following steps of performing pressing operation based on external magnetic field configuration on magnetic powder particle raw materials, acquiring a pressing intermediate, acquiring real-time pressure parameters, and performing edge-to-center magnetic field intensity adjustment operation on default magnetic field intensity according to the real-time pressure parameters to obtain a target magnetic field matrix; the method comprises the steps of judging whether the real-time pressure parameter is smaller than the pre-constructed process pressure in the magnetic field orientation molding process parameters, configuring the pressing operation based on external magnetic field configuration when the real-time pressure parameter is larger than or equal to the process pressure, maintaining the process pressure and the target magnetic field matrix until the preset maintaining time to obtain a pressed finished product, and carrying out processing molding operation on the pressed finished product according to a preset sintering and post-processing strategy to obtain a target magnetic steel product. The invention can improve the accuracy of the magnetic field orientation shaping process.

Inventors

ZHU QING
WANG SHAOHUI
LIU WEIYE
Ni haohan

Assignees

宁波松科磁材有限公司

Dates

Publication Date: 20260508
Application Date: 20260206

Claims (10)

1. The magnetic steel forming accurate control method based on magnetic field orientation is characterized by comprising the following steps of: Acquiring magnetic powder particle raw materials according to the pre-constructed order information; according to preset magnetic field orientation molding process parameters, performing external magnetic field configuration-based pressing operation on the magnetic powder particle raw materials, and in the process of the external magnetic field configuration-based pressing operation: Obtaining a pressing intermediate, obtaining a real-time pressure parameter, and performing edge-to-center-based magnetic field intensity adjustment operation on a preset default magnetic field intensity in the magnetic field orientation molding process parameter according to the real-time pressure parameter by utilizing a pre-trained magnetic field configuration model to obtain a target magnetic field matrix; judging whether the real-time pressure parameter is smaller than the pre-constructed process pressure in the magnetic field orientation molding process parameter; when the real-time pressure parameter is smaller than the process pressure, updating the default magnetic field strength by using the target magnetic field matrix, and returning to the step of obtaining the pressing intermediate; when the real-time pressure parameter is greater than or equal to the process pressure, configuring the pressing operation based on the external magnetic field configuration, and maintaining the process pressure and the target magnetic field matrix until the preset maintaining time to obtain a pressed finished product; and carrying out processing forming operation on the pressed finished product according to a preset sintering and post-treatment strategy to obtain a target magnetic steel product.
2. The precise control method for magnetic steel forming based on magnetic field orientation according to claim 1, wherein the obtaining the magnetic powder particle raw material according to the pre-constructed order information comprises: text keyword recognition is carried out on the pre-constructed order information, and the magnetic steel type, the magnetic steel scale size and the density requirement are obtained; If the magnetic steel type is a preset first magnetic steel type, multiplying the scale size and the density requirement of the magnetic steel to obtain the raw material requirement; According to the raw material demand, obtaining a magnetic powder mixed raw material, and smelting and cooling the magnetic powder mixed raw material to obtain an alloy melt-spun sheet; Crushing the alloy melt-spun sheet into powder with preset granularity by using pre-constructed powder manufacturing equipment to obtain a magnetic powder particle raw material; And if the magnetic steel type is a preset second magnetic steel type, acquiring a sub-component particle set, and uniformly mixing the sub-component particle set to obtain a magnetic powder particle raw material.
3. The magnetic steel forming accurate control method based on magnetic field orientation according to claim 2, wherein the performing, by using a pre-trained magnetic field configuration model, a magnetic field intensity adjustment operation based on edge-to-center on a pre-constructed default magnetic field intensity in the magnetic field orientation forming process parameter according to the real-time pressure parameter to obtain a target magnetic field matrix comprises: Predicting the intermediate real-time size of the pressed intermediate according to the real-time pressure parameter by utilizing a pre-constructed edge-magnetic field configuration network in a pre-trained magnetic field configuration model; Performing magnetic field configuration operation based on edge orientation degree adjustment on the default magnetic field strength according to the intermediate real-time size to obtain magnetic field strength gradient distribution, wherein the edge-magnetic field configuration network is expressed as: , in the formula, Representing the gradient distribution of the magnetic field strength, Shows the regression function relation of the intensity distribution of the magnetic field inside the magnetic steel according to the external magnetic field and the magnetic steel size, Representing the real-time dimensions of the intermediate, Representing the default magnetic field strength as described above, Representing a coefficient of relationship between the intermediate real-time dimension and the real-time pressure parameter, Representing the said real-time pressure parameter, Representing the bias; Predicting the real-time internal pressure distribution of the pressing intermediate according to the real-time pressure parameter and the real-time size of the intermediate by utilizing a pre-constructed pressure-magnetic field configuration network in the magnetic field configuration model; Performing compensation magnetic field prediction operation on the pressing intermediate based on the magnetic field intensity gradient distribution pressure attenuation according to the real-time internal pressure distribution to obtain compensation magnetic field intensity distribution, wherein the pressure-magnetic field configuration network is expressed as: , in the formula, Indicating that the magnetic field intensity distribution is compensated for, Representing a weight coefficient between the offset magnetic field strength distribution and the real-time internal pressure distribution, Representing the real-time internal pressure profile, A regression function relation for predicting the internal pressure distribution of the magnetic steel according to the surface pressure and the size of the magnetic steel is shown; and performing network reverse calculation on the compensation magnetic field intensity distribution by using the edge-magnetic field configuration network to obtain external compensation magnetic field intensity distribution, and performing matrix summation on the external compensation magnetic field intensity distribution and default magnetic field intensity to obtain a target magnetic field matrix.
4. The precise control method for magnetic steel forming based on magnetic field orientation according to claim 3, wherein before the pre-built fringe-magnetic field configuration network in the pre-trained magnetic field configuration model is utilized, the method further comprises: Acquiring a pressure and size relation sample based on the magnetic powder particle raw material, and performing machine learning on the pressure and size relation sample by using a pre-constructed regression network model to obtain a pressed size prediction network; Acquiring a magnetic field orientation experimental parameter set based on the combination of the random external magnetic field intensity and the random billet size, and acquiring the magnetic steel orientation degree corresponding to each magnetic field orientation experimental parameter in the magnetic field orientation experimental parameter set to obtain an orientation degree set; performing key value pair construction on the magnetic field orientation experiment parameter set and the orientation degree set to obtain a training sample set; Training the regression network model by using the training sample set to obtain an orientation degree identification network based on a magnetic field and a size, and minimizing the orientation degree identification network based on the magnetic field and the size to obtain a magnetic field identification network with the minimum orientation degree; and connecting the pressed size prediction network to the magnetic field identification network to obtain an edge-magnetic field configuration network.
5. The method for precisely controlling the molding of magnetic steel based on the orientation of a magnetic field according to claim 4, wherein before the pre-constructed pressure-magnetic field configuration network in the magnetic field configuration model is utilized, the method further comprises: discretizing a pre-constructed target billet into a unit billet set by using a pre-constructed finite element method; simulating the extrusion process of the unit billet set according to preset extrusion parameters to obtain the three-dimensional pressure distribution of the target billet; According to a preset weight coefficient, carrying out weighted calculation on the three-dimensional pressure distribution to obtain magnetic field utilization rate distribution; Acquiring a blank size parameter of the target steel blank and a surface pressure parameter in the extrusion parameters, and constructing a pressure-magnetic field distribution sample according to the blank size parameter, the surface pressure parameter and the magnetic field utilization rate distribution; Training the regression network model according to the pressure-magnetic field distribution sample to obtain a pressure-magnetic field utilization rate identification network; And obtaining an output layer of the pressure-magnetic field utilization rate identification network, and configuring the output layer by utilizing a pre-constructed activation function to obtain a pressure-magnetic field configuration network.
6. The method of precisely controlling magnetic steel molding based on magnetic field orientation according to claim 5, wherein the maintaining the process pressure and the target magnetic field matrix until a preset holding time, the method further comprises: judging the shape of the pressed intermediate; When the shape of the pressed intermediate is a preset rectangle or column, classifying the sizes of the pressed intermediate according to a preset size rule; If the shape of the pressed intermediate is a preset rectangle or column with small size, configuring the holding time as a preset first holding time; If the shape of the pressed intermediate is a preset rectangle or column with large size, configuring the holding time as a preset second holding time; And when the shape of the pressed intermediate is a preset special shape, configuring the holding time as a preset third holding time.
7. The precise control method for forming magnetic steel based on magnetic field orientation according to claim 6, wherein the performing a forming operation on the pressed product according to a preset sintering and post-treatment strategy to obtain a target magnetic steel product comprises: according to a preset sintering and post-treatment strategy, carrying out sintering treatment on the pressed finished product to obtain a sintered product, and carrying out quenching and tempering operations on the sintered product to obtain heat treatment magnetic steel; Performing machine cutting operation on the heat treatment magnetic steel according to the product specification pre-constructed in the sintering and post-treatment strategy to obtain a formed product, and performing surface electroplating treatment operation on the formed product to obtain a corrosion-resistant product; And magnetizing the corrosion-resistant product by using pre-constructed magnetizing equipment to obtain a target magnetic steel product.
8. The precise control method for forming magnetic steel based on magnetic field orientation according to claim 7, wherein after performing a forming operation on the pressed product according to a preset sintering and post-treatment strategy to obtain a target magnetic steel product, the method further comprises: Obtaining a target magnetic field matrix corresponding to each pressing intermediate in the pressing operation process based on the external magnetic field configuration, and obtaining a magnetic field matrix change sequence; Performing simulation on the magnetic field matrix change sequence by using a pre-constructed finite element simulation model to obtain a simulation control signal; and utilizing the analog control signal to perform instruction configuration on the pre-constructed electromagnetic coil array.
9. The method for precisely controlling the molding of the magnetic steel based on the orientation of the magnetic field according to claim 8, wherein after the target magnetic steel product is obtained, the method further comprises: detecting the orientation degree of the target magnetic steel product to obtain the true orientation degree; Judging whether the true orientation degree is smaller than a preset qualification threshold value or not; and when the true orientation degree is smaller than the qualification threshold value, judging that the target magnetic steel product is not qualified.
10. Magnetic steel forming accurate control system based on magnetic field orientation, characterized in that the system includes: The raw material acquisition module is used for acquiring magnetic powder particle raw materials according to the pre-constructed order information; The magnetic field orientation shaping module is used for carrying out external magnetic field configuration-based pressing operation on the magnetic powder particle raw materials according to preset magnetic field orientation shaping process parameters, acquiring a pressing intermediate in the process of the external magnetic field configuration-based pressing operation, acquiring real-time pressure parameters, and carrying out edge-to-center magnetic field strength-based magnetic field strength adjustment operation on the preset default magnetic field strength in the magnetic field orientation shaping process parameters according to the real-time pressure parameters by utilizing a pre-trained magnetic field configuration model to obtain a target magnetic field matrix; The parameter adjustment module is used for judging whether the real-time pressure parameter is smaller than the pre-constructed process pressure in the magnetic field orientation molding process parameters, updating the default magnetic field strength by utilizing the target magnetic field matrix when the real-time pressure parameter is smaller than the process pressure, returning to the step of obtaining the pressed intermediate, configuring the pressing operation based on the external magnetic field configuration when the real-time pressure parameter is larger than or equal to the process pressure, and maintaining the process pressure and the target magnetic field matrix until the preset maintaining time to obtain a pressed finished product; And the post-processing module is used for carrying out processing forming operation on the pressed finished product according to a preset sintering and post-processing strategy to obtain a target magnetic steel product.

Description

Magnetic steel forming accurate control method and system based on magnetic field orientation Technical Field The invention relates to the technical field of artificial intelligent regulation and control, in particular to a magnetic steel forming accurate control method and system based on magnetic field orientation. Background The current magnetic steel forming process is generally the processes of material selection, smelting, magnetic field orientation shaping, heat treatment and film plating processing. The magnetic field orientation shaping refers to a process of orderly arranging magnetic powder in the magnetic steel along the magnetic field direction by applying a uniform external magnetic field and simultaneously pressurizing and pressing the magnetic powder. However, the requirements of magnetic steel products are higher and higher nowadays, and the sizes of the products are larger and larger, so that errors in the traditional magnetic field orientation shaping process are larger and larger, and the problems of low orientation degree of the edges of the magnetic steel, large orientation degree error and the like are caused, so that the hardware requirements of high-precision equipment cannot be met in the traditional magnetic steel production process. Disclosure of Invention The invention provides a magnetic steel forming accurate control method based on magnetic field orientation, which mainly aims to improve the accuracy of a magnetic field orientation shaping process. In order to achieve the above object, the present invention provides a magnetic steel forming accurate control method based on magnetic field orientation, comprising: Acquiring magnetic powder particle raw materials according to the pre-constructed order information; according to preset magnetic field orientation molding process parameters, performing external magnetic field configuration-based pressing operation on the magnetic powder particle raw materials, and in the process of the external magnetic field configuration-based pressing operation: Obtaining a pressing intermediate, obtaining a real-time pressure parameter, and performing edge-to-center-based magnetic field intensity adjustment operation on a preset default magnetic field intensity in the magnetic field orientation molding process parameter according to the real-time pressure parameter by utilizing a pre-trained magnetic field configuration model to obtain a target magnetic field matrix; judging whether the real-time pressure parameter is smaller than the pre-constructed process pressure in the magnetic field orientation molding process parameter; when the real-time pressure parameter is smaller than the process pressure, updating the default magnetic field strength by using the target magnetic field matrix, and returning to the step of obtaining the pressing intermediate; when the real-time pressure parameter is greater than or equal to the process pressure, configuring the pressing operation based on the external magnetic field configuration, and maintaining the process pressure and the target magnetic field matrix until the preset maintaining time to obtain a pressed finished product; and carrying out processing forming operation on the pressed finished product according to a preset sintering and post-treatment strategy to obtain a target magnetic steel product. Optionally, the obtaining the magnetic powder particle raw material according to the pre-constructed order information includes: text keyword recognition is carried out on the pre-constructed order information, and the magnetic steel type, the magnetic steel scale size and the density requirement are obtained; If the magnetic steel type is a preset first magnetic steel type, multiplying the scale size and the density requirement of the magnetic steel to obtain the raw material requirement; According to the raw material demand, obtaining a magnetic powder mixed raw material, and smelting and cooling the magnetic powder mixed raw material to obtain an alloy melt-spun sheet; Crushing the alloy melt-spun sheet into powder with preset granularity by using pre-constructed powder manufacturing equipment to obtain a magnetic powder particle raw material; And if the magnetic steel type is a preset second magnetic steel type, acquiring a sub-component particle set, and uniformly mixing the sub-component particle set to obtain a magnetic powder particle raw material. Optionally, the performing, by using a pre-trained magnetic field configuration model, an edge-to-center magnetic field intensity adjustment operation on a default magnetic field intensity pre-built in the magnetic field orientation molding process parameter according to the real-time pressure parameter, to obtain a target magnetic field matrix includes: Predicting the intermediate real-time size of the pressed intermediate according to the real-time pressure parameter by utilizing a pre-constructed edge-magnetic field configuration network in a pre-tra