CN-116713447-B - Multi-flux permanent magnet stirring device and method

Abstract

The application discloses a multi-flux permanent magnet stirring device and a method, the device comprises a sleeve, a permanent magnet rotating mechanism, an A tray, a B tray, a trolley, an annular path, an A telescopic rod, a B telescopic rod and a control system, wherein the sleeve and the permanent magnet are nested and assembled, the annular runner is supported and arranged inside the sleeve through the B telescopic rod, the A tray is supported and arranged inside the sleeve through the A telescopic rod, the B tray is arranged on the trolley through the tray rotating mechanism, and the trolley is assembled with the annular runner in a sliding mode. The permanent magnet stirring device can simultaneously perform permanent magnet stirring experiments of a plurality of melts, can realize diversified and multi-level permanent magnet stirring experiments, has a simple structure, is convenient to operate and easy to maintain, can be widely applied to the field of metallurgical melt permanent magnet stirring, can also be applied to the field of experimental research, meets the influence of laboratory diversified research on the solidification, the structure, the performance and the like of the melts, and lays a foundation for subsequent industrialized application.

Inventors

• ZENG JIE
• PENG JIANFEI
• WANG WANLIN
• ZHU XIAOLEI
• GAN PEIYUAN
• YUAN SHUAIJIE
• ZHU CHENYANG

Assignees

• 中南大学

Dates

Publication Date

20260505

Application Date

20230531

Claims (6)

1. 1. The multi-flux permanent magnet stirring device is characterized by comprising a sleeve (1), a permanent magnet (2), a permanent magnet rotating mechanism (7), an A tray (9), a B tray (3), a trolley (4), an annular roadway (5), an A telescopic rod (10), a B telescopic rod (6) and a control system (8), wherein the sleeve is assembled with the permanent magnet in a nested mode, the permanent magnet is driven to rotate through the permanent magnet rotating mechanism, the annular roadway is supported and arranged in the sleeve through the B telescopic rod, the A tray is supported and arranged in the sleeve through the A telescopic rod, the B tray is arranged on the trolley through the tray rotating mechanism, the trolley is assembled with the annular roadway in a sliding mode, and the control system is respectively connected with the trolley, the A telescopic rod, the B telescopic rod and the permanent magnet rotating mechanism in an electric mode.
2. 2. The multi-flux permanent magnet stirring device according to claim 1, wherein the number of the trays B and the trolleys is controlled to be 1-4.
3. 3. The multi-flux permanent magnet stirring device according to claim 1, wherein the number of the A telescopic rods is not lower than 6, and the number of the B telescopic rods is not lower than 3.
4. 4. The multi-flux permanent magnet stirring device according to claim 1, wherein the control system comprises a permanent magnet rotating mechanism control module, a tray rotating mechanism control module, an A telescopic rod motion control module, a B telescopic rod motion control module and a trolley motion control module.
5. 5. The multi-flux permanent magnet stirring device according to claim 1, wherein the rotating speed of the permanent magnet is controlled to be 0-200r/min, the rotating speed of the B tray is controlled to be 0-100r/min, and the telescopic speeds of the A telescopic rod and the B telescopic rod are controlled to be 0-2m/min.
6. 6. A method of stirring a melt using the multi-flux permanent magnet stirring device of claim 1, comprising the steps of: S1, placing a crucible filled with research melt on an A tray and a B tray; and S2, starting a permanent magnet stirring device, and adjusting permanent magnet stirring parameters including the steering and rotating speed of a permanent magnet, the moving speed of a trolley, the steering and rotating speed of a tray B and the telescopic speeds of a telescopic rod A and a telescopic rod B.

Description

Multi-flux permanent magnet stirring device and method Technical Field The invention relates to the technical field of metallurgical melt stirring, in particular to a multi-flux permanent magnet stirring device and method. Background Three-phase ac electromagnetic stirrers have now become the mainstream, effective and quality-controlled standard continuous casting configuration for casting billets. The electromagnetic stirring is applied to the melt so as to regulate the quality of casting blanks, and more metallurgical workers pay attention to the quality. However, electromagnetic stirring requires high-power variable-frequency current to generate an alternating magnetic field, and is faced with a series of problems of complex equipment, high energy consumption, high maintenance cost and the like. In addition, the stirrer must use flowing water with a certain pressure, and the service life of the coil is still short despite the use of high quality cooling water. With the rapid development of magnetic materials, permanent magnet stirring has become an effective alternative to electromagnetic stirring. Research shows that the electric energy consumption of permanent magnetic stirring is only one tenth of that of electromagnetic stirring. However, the permanent magnetic material generally faces the problem of high-temperature loss of magnetism, and faces the dilemma of high-temperature cooling when the permanent magnetic stirring is operated at a high rotating speed, and meanwhile, the permanent magnetic material is unfavorable for long-term stable operation of a driving mechanism. In the prior art, some permanent magnet stirring devices appear, for example, patent CN110152545A discloses a continuous casting permanent magnet spiral magnetic field stirrer, and magnetic field stirring is performed by using spiral magnetic fields composed of magnetic steels distributed in a spiral line, and the number of the used magnetic steels is more than 25-40. As another example, patent CN208591780U discloses a permanent magnet stirrer capable of effectively preventing segregation, and the rotation of propeller-like blades drives the melt to uniformly move, so that the structure is more complex, and only a single magnetic field movement mode can be realized. In a word, current permanent magnetism agitating unit, the structure is comparatively complicated, and the magnetic field mode is comparatively single, is unfavorable for regulation and control and improves casting blank quality. In addition, when the common permanent magnet stirring device is used in the field of experimental study, the influence of permanent magnet stirring on melt solidification, structure, performance and the like is difficult to be studied in a diversified mode, and meanwhile, only one permanent magnet stirring condition control and a single-group permanent magnet stirring experiment can be performed. Disclosure of Invention Therefore, the invention aims to provide a multi-flux permanent magnet stirring device and a multi-flux permanent magnet stirring method, so that the stirring device can simultaneously perform a plurality of groups of permanent magnet stirring experiments, and can also realize diversified and multi-layer permanent magnet stirring experiments, and the multi-flux permanent magnet stirring device has the advantages of simple structure, convenience in operation and easiness in maintenance. The method can be widely applied to the field of permanent magnet stirring of metallurgical melt, can also be applied to the field of experimental study, meets the influence of permanent magnet stirring on melt solidification, structure and performance in laboratory diversified study, and lays a foundation for subsequent industrial application. The invention solves the problems by the following technical means: The utility model provides a multi-flux permanent magnet stirring device, includes sleeve, permanent magnet rotary mechanism, A tray, B tray, dolly, annular channel, A telescopic link, B telescopic link and control system, sleeve and the nested assembly of permanent magnet, the permanent magnet passes through permanent magnet rotary mechanism drive rotation, the annular channel passes through B telescopic link to be supported and sets up inside the sleeve, A tray passes through A telescopic link to be supported and sets up inside the sleeve, B tray passes through tray rotary mechanism to be set up on the dolly, dolly and annular channel sliding assembly, control system is connected with dolly, A telescopic link, B telescopic link and permanent magnet rotary mechanism electricity respectively, A tray and B tray all can be used to place the crucible of holding the fuse-element, carries out the permanent magnet stirring experiment. Further, the number of the trays B is controlled to be 1-4. The tray B is fixed on the trolley and can do periodic motion on the annular travelling path. Further, the tray A and the tray B can move in the vertical