CN-121977907-A - Method and system for rapidly preparing and screening silicon steel components through high-flux experiment based on positive pressure arc melting system

CN121977907ACN 121977907 ACN121977907 ACN 121977907ACN-121977907-A

Abstract

The invention relates to the technical field of metal material preparation, in particular to a method and a system for rapidly preparing and screening silicon steel components through a high-throughput experiment based on a positive pressure arc melting system. The invention has the advantages that a plurality of groups of silicon steel samples with different components are prepared at one time in the same smelting process, the high-flux synchronous smelting of the samples with different components is realized by matching a positive pressure arc smelting system with a sample array module, the limit of the traditional single factor variable method for preparing samples one by one is broken through, the research and development period from design to verification of new materials is obviously shortened, and the contents of various elements are systematically adjusted in the same batch by setting a gradient component system, so that the research on the synergistic effect and the interactive influence among the elements is facilitated.

Inventors

ZHAO YUQIAO
Dong Linshuo
AI BINGQUAN
LIU XUMING
GAO PENGFEI
Su Shengrui
GENG ZHIYU
WANG JINGJING
XU NING
Xuan dongpo
GUO HAN

Assignees

鞍钢集团北京研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20260225

Claims (10)

1. The method for rapidly preparing and screening the silicon steel component based on the high-throughput experiment of the positive pressure arc melting system is characterized by comprising the following steps of: s1, component design and sample proportioning: according to the silicon steel components, designing a gradient component system to form a plurality of groups of raw material formulas with different components; s2, sample loading and furnace chamber pretreatment: Respectively filling each group of mixed raw materials into a sample tank of a sample stage, and putting the sample stage into a transition cabin for pumping and supplementing air and cleaning; S3, assembling an auxiliary device and starting a cooling system; S4, setting a datum point: Moving a tungsten electrode of an arc melting system to the center of a first crucible and setting a reference point; S5, Z-axis distance adjustment: In a manual control mode, adjusting the Z-axis position for determining the Z-axis descending distance during arc melting; s6, setting smelting program parameters; S7, setting smelting current, and starting a dust removal system before starting an arc; S8, smelting: and (5) waiting for cooling and turning over after each smelting pass, and repeating smelting for a plurality of times.
2. The method for rapidly preparing and screening silicon steel components based on the high-throughput experiment of the positive pressure arc melting system according to claim 1, wherein in S1, the silicon content in the gradient component system is 2.0-4.5wt%, the aluminum content is 0.5-1.2wt%, the manganese content is 0.2-1.0wt% and the tin content is 0.01-0.1wt%.
3. The method for rapidly preparing and screening silicon steel components based on the high-throughput experiment of the positive pressure arc melting system according to claim 1, wherein in S1, the mass of each group of raw material formula is 20-50 g, and the raw materials comprise pure iron, pure aluminum, simple substance silicon and simple substance manganese which are correspondingly proportioned to reach a gradient component system.
4. The method for rapidly preparing and screening silicon steel components based on high-throughput experiment of positive pressure arc melting system as claimed in claim 1, wherein in S2, the gas pumping and cleaning is a three-pumping and three-pumping process, and the gas pumping to-1 bar and then the gas pumping and the gas pumping to-0 bar are circulated once.
5. The method for rapidly preparing and screening silicon steel components based on high-throughput experiment of positive pressure arc melting system as claimed in claim 1, wherein in S3, the assembly auxiliary device comprises a ceramic insulating plate, a partition plate and a baffle plate for protection, and the cooling system is a water chiller.
6. The method for rapid preparation and screening of silicon steel components based on high throughput experimentation of positive pressure arc melting system as claimed in claim 1, wherein in S6, the setting of melting program parameters includes melting station, stirring diameter, melting time, arc starting time, stirring speed, Z-axis falling distance, Z-axis rising distance.
7. The method for rapidly preparing and screening silicon steel components based on a high-throughput experiment of a positive pressure arc melting system according to claim 1, wherein in S7, the melting current is set to 240-300 a.
8. The method for rapidly preparing and screening silicon steel components based on the high-throughput experiment of the positive pressure arc melting system according to claim 1, wherein in S8, the melting time is 60-99S each time, the crucible is cooled after more than 10min after one time of melting, and the melting is repeated for 3-5 times after the crucible is turned over by forceps.
9. A system for rapidly preparing and screening silicon steel components based on a high-flux experiment of a positive pressure arc melting system for realizing the method of any one of claims 1 to 8, which is characterized by comprising a positive pressure vacuum arc melting furnace main body, a high-flux sample array module and a positive pressure atmosphere control system module; the positive pressure vacuum arc melting furnace main body is provided with a furnace chamber, an electrode system, a vacuum air extraction unit and an inert gas inlet unit, wherein the furnace chamber is used for accommodating a sample table and providing a melting environment, the electrode system is used for generating an electric arc and melting a sample, the vacuum air extraction unit is used for carrying out vacuumizing operation on the furnace chamber, and the inert gas inlet unit is used for filling inert gas into the furnace chamber so as to maintain a positive pressure protective atmosphere; The high-throughput sample array module comprises a detachable sample stage, wherein the detachable sample stage is provided with at least 32 independent sample grooves for placing multiple groups of samples with different components; The positive pressure atmosphere control system module is connected with the vacuum air extraction unit and the inert gas inlet unit and is used for controlling the air extraction and supplementing process to clean the furnace chamber and provide positive pressure protection for argon, wherein the inert gas is argon, and the purity of the argon is more than or equal to 99.999 percent.
10. The system for rapidly preparing and screening silicon steel components based on the high-flux experiment of the positive pressure arc melting system is characterized in that the electrode system is a tungsten electrode, the arc current adjusting range is 240-300A, and a water cooling channel is arranged at the bottom of the sample tank.

Description

Method and system for rapidly preparing and screening silicon steel components through high-flux experiment based on positive pressure arc melting system Technical Field The invention relates to the technical field of metal material preparation, in particular to a method and a system for rapidly preparing and screening silicon steel components based on a high-throughput experiment of a positive pressure arc melting system. Background Silicon steel is an important soft magnetic material, and is widely applied to the manufacture of iron cores of electric equipment such as motors, transformers and the like, and the magnetic performance (such as magnetic permeability, iron loss and the like) of the silicon steel directly influences the energy efficiency and the operation stability of the electric equipment. The silicon steel has the properties closely related to the chemical components, namely the improvement of the silicon content is beneficial to the improvement of magnetic permeability and the reduction of iron loss, but the excessively high silicon content can increase the brittleness of the material and deteriorate the processing performance, the addition of alloy elements such as aluminum, manganese and the like can refine grains and inhibit magnetic aging, and trace alloy elements such as titanium, niobium and the like can further optimize the magnetic performance of the material by forming precipitated phases and pinning grain boundaries. Therefore, the precise design and optimization of the silicon steel components are key to developing high-performance silicon steel products. The traditional silicon steel component development mainly adopts a single factor variable method, namely, only the content of one element is changed each time, a single component sample is prepared and performance test is carried out, and component optimization is realized by gradual adjustment. The method has the following obvious defects: (1) The preparation efficiency is low, each sample needs to be smelted, processed and tested independently, and the research and development period is long; (2) The optimization dimension is limited, namely the synergism among various elements is difficult to systematically inspect, and the component design space is limited; (3) And the component control is inaccurate, namely in the conventional smelting process, the sample is easily oxidized by residual oxygen in the furnace, so that component deviation and inclusion are increased, and the accuracy of the performance test and the consistency of the material are affected. In recent years, high-throughput experimental techniques have been widely used in the field of material development, which can greatly improve development efficiency by preparing sample arrays with component gradients in parallel and realizing rapid characterization. However, the application of the existing high-flux preparation technology in the silicon steel field still faces the challenge that the traditional vacuum arc melting furnace usually works under the negative pressure or normal pressure condition, residual oxygen in the furnace chamber is difficult to thoroughly remove, so that a sample is oxidized in the melting process to form nonmetallic inclusions, and the magnetic performance and the component uniformity of the silicon steel are seriously affected. Disclosure of Invention The invention aims to provide a method and a system for rapidly preparing and screening silicon steel components based on a high-flux experiment of a positive pressure arc melting system, which comprehensively solve the problems of low efficiency, narrow dimension and serious oxidation in the research and development of traditional silicon steel components by the system integration of three core technologies of high-flux parallel preparation, multi-element gradient design and positive pressure anti-oxidation control, and provide a complete, reliable and efficient experimental method system for rapid development of high-performance silicon steel materials. In order to achieve the above purpose, the present invention is realized by the following technical scheme: A method for rapidly preparing and screening silicon steel components based on a high-throughput experiment of a positive pressure arc melting system comprises the following steps: s1, component design and sample proportioning: according to the silicon steel components, designing a gradient component system to form a plurality of groups of raw material formulas with different components; s2, sample loading and furnace chamber pretreatment: Respectively filling each group of mixed raw materials into a sample tank of a sample stage, and putting the sample stage into a transition cabin for pumping and supplementing air and cleaning; S3, assembling an auxiliary device and starting a cooling system; S4, setting a datum point: Moving a tungsten electrode of an arc melting system to the center of a first crucible and setting a reference poi