Device and method for continuous preparation of large-size high-quality aluminum alloy cast ingots

Abstract

The invention relates to a device and a method for continuous preparation of large-size high-quality aluminum alloy cast ingots. The device comprises a magnetism conducting mandrel, a hot ejector, a flow guide pipe, an electromagnetic stirrer, a cooling water jacket, a graphite annulus and a crystallizer. The graphite annulus is inlaid in the crystallizer, the cooling water jacket is arranged outside the crystallizer, the electromagnetic stirrer is arranged outside the flow guide pipe which is arranged on the upper portion of the crystallizer, the hot ejector is arranged on the upper portion of the flow guide pipe, the magnetism conducting mandrel is arranged in the center of the flow guide pipe, and a gap passage is formed between the magnetism conducting mandrel and the inner wall of the flow guide pipe. A magnetic field generated by the electromagnetic stirrer forms an unimpeded magnetic circuit with the magnetism conducting mandrel along aluminum alloy melts in the gap passage, the magnetic field in the gap passage is distributed uniformly, the aluminum alloy melts in the gap passage are stirred uniformly, a temperature field and a component field are uniform, and accordingly adverse effects of electromagnetic stirring skin effect are avoided, and acquisition of high-quality aluminum alloy cast ingots with thinner textures and uniform components is benefited.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and relates to a device and method for continuously preparing large-size high-quality aluminum alloy ingots. Background technique [0002] Large-sized aluminum alloy ingots are the food of the non-ferrous processing industry and the material basis for manufacturing and processing large and medium-sized aluminum materials. Large and medium-sized aluminum materials are widely used in industries such as railways, automobiles, national defense, railways, ships, and containers. Moreover, as my country's high-speed railway, intercity train, urban rail transit, and large aircraft projects enter the fast lane, the demand for large and medium-sized structural industrial profiles will increase, and correspondingly large and medium-sized structural industrial profiles will be used. The demand for large and small aluminum alloy ingots is also stronger. However, behind the rapid development...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies existing in the current large-size ingots, the present invention avoids the adverse influence of the skin effect of electromagnetic stirring, is beneficial to obtain high-quality aluminum alloy ingots with finer structures and uniform components, and solves the problem of preparing large-size high-alloy ingots in the prior art. In order to solve the technical problems of casting defects such as coarse structure, composition segregation, and cracks during ingot casting, a device for continuously preparing large-size high-quality aluminum alloy ingots is provided.

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