Assistant plumbago inner lining for semi-continuous casting aluminum alloy cake electromagnetic field

Abstract

The invention provides a graphite bushing used on electromagnetic field aided semi-continuous casting for aluminium alloy slab ingot, which comprises front, back, left and right four pieces of graphite. A plurality of insulation layers are respectively arranged at the adapting places between adjacent graphite; the graphite inner bushing is symmetric construction in vertical direction; the inner wall of the graphite inner bushing is provided with tapers; the upper end face and the lower end face of the graphite inner bushing are designed with a slot respectively. The body of the graphite inner bushing is spliced by four pieces of graphite; the adapting places are filled with insulation material, so as to reduce the induction heating effect of the alternate electromagnetic field to the graphite inner bushing and to improve the utilization ratio of the electromagnetic field; the graphite inner bushing is designed with vertical symmetric construction; therefore, when the lower surface is damaged, the graphite inner bushing can be turned over upside down and can be used sequentially, and the service life of the graphite inner bushing is improves one time. The contact surfaces between the graphite inner bushing and the aluminum fused mass are designed with tapers, so as to make the cast ingots being easy demoulded. The invention has the advantages of great practicality and wonderful application value.

Description

technical field [0001] The invention relates to a graphite lining for aluminum alloy flat ingot electromagnetic field assisted semi-continuous casting, which belongs to the technical field of aluminum alloy semi-continuous casting. Background technique [0002] The former Soviet scholar Getselev invented the electromagnetic casting technology. Since the casting process replaced the traditional crystallizer wall, it completely relied on electromagnetic force to constrain the liquid metal to form. During the casting process, the liquid metal was not in contact with the outside world, so the aluminum produced by electromagnetic casting The surface of the alloy ingot is very bright, and it can be directly extruded and rolled without turning. However, this technology requires that the matching of casting parameters and electromagnetic parameters must be very precise, otherwise it is easy to leak or even difficult to form. In order to improve the operability and versatility of el...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a graphite lining for aluminum alloy flat ingot electromagnetic field assisted semi-continuous casting, which aims to overcome the shortage of frequent replacement of the existing graphite lining due to wear and tear, and can reduce the impact of the ingot on the graphite surface during casting. friction, prolonging the service life of the graphite lining

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