Electromagnetic sensor for aluminum alloy electromagnetic field auxiliary semi-continuous casting

Abstract

The invention provides an electromagnetic inductor for aluminum alloy electromagnetic field assisted semi-continuous casting. The copper plate of the electromagnetic inductor has a copper plate structure, and a single-turn copper plate coil with a hollow structure is formed by sealing and welding two vertical copper plates with copper strips at the upper and lower ends. The two ends are respectively connected with hollow copper blocks, and the copper blocks are respectively connected with wiring blocks. An insulating sheet is arranged between the two ends of the coil, and the coil is bent to form a closed ring shape; The water copper pipe is connected with the inner cavity of the coil through the water copper pipe. The copper plate structure ensures the uniform distribution of the electromagnetic field in the axial direction, and the hollow structure of the coil ensures that the cooling water can form a loop when the inductor is working without leakage. In application, the electromagnetic inductor is placed between the graphite lining and the inner wall of the crystallizer, and the coil is fed with a medium-frequency alternating current to excite a medium-frequency alternating electromagnetic field. The distance between the coil and the aluminum melt is relatively close, which ensures the penetration depth of the medium-frequency magnetic field. Improved the effect of electromagnetic fields.

Description

Technical field [0001] The invention relates to an electromagnetic inductor for aluminum alloy electromagnetic field assisted semi-continuous casting, and belongs to the technical field of aluminum alloy semi-continuous casting. Background technique [0002] In order to improve the casting defects of aluminum alloy ingots with more cold barriers and serious segregation, the former Soviet Union scholar Getselev created electromagnetic casting technology. This technology completely relies on electromagnetic force to constrain the molten metal to form, instead of the traditional casting which is constrained by the inner wall of the mold. The way of molding. Therefore, the surface of the aluminum alloy ingot prepared by electromagnetic casting is very bright and can be directly extruded and rolled without turning. However, electromagnetic casting requires very accurate matching of casting parameters and electromagnetic parameters, otherwise it is easy to leak and even difficult to ca...

AI Technical Summary

Problems solved by technology

[0004] Inductors with a multi-turn coil structure have uneven distribution of the magnetic field in the axial direction, and the number of coil turns is large, and the stability is poor; in order to reduce the distance from the coil to the aluminum melt, the induction coil is often arranged on the graphite lining and crystal In the cavity between the inner walls of the device, since the cooling water does not pass through the cavity, it is difficult to cool the coil

Images