Melt treatment device and method for preparing oversized aluminum alloy ingot

Abstract

The invention discloses a melt treatment device and method for preparing an oversized aluminum alloy ingot. The device mainly comprises an annular electromagnetic melt treater, a hot top, a crystallizer, a crystallizer water tank, a graphite ring, a dummy ingot and a lifting mechanism, wherein the annular electromagnetic melt treater is arranged in the crystallizer and concentric with the crystallizer, a circuit port and a connecting mechanism are arranged at the top of the annular electromagnetic melt treater, and the annular electromagnetic melt treater is connected with the lifting structure, capable of moving up and down in a height direction of the crystallizer through the lifting mechanism and is positioned at a corresponding position in the crystallizer; a lower end of the hot top is hermetically connected with the crystallizer through the graphite ring; the crystallizer water tank is arranged on the periphery of the crystallizer. When the device is used for melt treatment, theannular electromagnetic melt treater is applied to the alloy melt in a semi-continuous casting process, so that a temperature field and a component field of the super-large-volume alloy melt are effectively and uniformly controlled, melt flow is effectively controlled, and the high-quality oversized aluminum alloy cast ingot with uniform and fine structure and uniform components is prepared.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to a melt processing device and method for preparing super-large aluminum alloy ingots. Background technique [0002] Super-sized aluminum alloy ingots play a vital role in major fields such as aerospace, rail transit, and national defense, and their application prospects are very broad. Ordinary semi-continuous casting of large-scale aluminum alloy ingots has problems such as coarse and uneven structure, composition segregation, looseness, cracking, etc. The yield is low and the quality is difficult to guarantee, which cannot meet the follow-up processing procedures. Aluminum alloy ingot performance requirements. The inhomogeneous temperature field, composition field and stress field in the solidification process of aluminum alloy melt are one of the main factors leading to such problems. As the size of the ingot increases, the temperature difference between t...

AI Technical Summary

Problems solved by technology

However, with the further increase of ingot specifications, the size of the electromagnetic processor placed inside the melt also increases accordingly, and the melt within the core range cannot be stirred by the electromagnetic field, and the effect and effect of electromagnetic treatment are also greatly reduced

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