Continuous lubricating crystallizer for aluminum alloy semi-continuous casting

Abstract

The invention relates to a continuous lubricating crystallizer for aluminum alloy semi-continuous casting. The inner wall of the crystallizer is inlaid with a graphite lining, and an independent oil chamber is arranged in the upper cover. The graphite lining has a vertically symmetrical structure and taper. The crystallizer body There are two separate upper and lower water chambers, the upper water chamber and the lower water chamber respectively have independent water inlets, the upper water chamber and the lower water chamber are respectively equipped with water baffles, and a row of water spray holes is set at the bottom of the upper water chamber. A row of water spray holes is also arranged at the bottom of the lower water chamber, and the angles of the water spray holes of the upper water chamber and the angles of the water spray holes of the lower water chamber are inconsistent in a staggered shape. During casting, the oil seeps into the graphite lining through the oil chamber to form a continuous oil film, which not only increases the lubrication effect of graphite, but also plays a role of heat insulation and reduces the primary cooling of the ingot. Two independent water chambers realize single or double water chambers. At the same time, water is supplied to increase the secondary cooling effect on the premise of ensuring that no thermal cracks occur in the initial stage of the aluminum alloy ingot, and realize a low liquid level inside the crystallizer, which significantly improves the surface quality of the ingot.

Description

technical field [0001] The invention relates to a crystallizer for semi-continuous casting of aluminum alloys, in particular to a lubricable crystallizer for semi-continuous casting of aluminum alloys, and belongs to the technical field of semi-continuous casting of aluminum alloys. Background technique [0002] During the semi-continuous casting process of aluminum alloy, the heat transfer of the side wall of the mold has an important influence on the surface quality of the aluminum alloy billet. In the traditional semi-continuous casting process, the crystallizer is usually made of copper alloy. During the casting process, the copper inner wall is in direct contact with the liquid aluminum alloy melt, and the casting resistance is large. Usually, smooth casting is achieved by manually applying lubricating oil. Therefore, the surface quality of the ingot is poor, and a large amount of turning is required to meet the requirements of subsequent thermal deformation. At presen...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of complex structure and expensive equipment of existing aluminum alloy advanced casting crystallizers, the present invention provides an advanced, realistic and feasible continuous lubricating crystallizer which can greatly improve the surface quality of aluminum alloy ingots, and is suitable for aluminum alloy round ingots and Slab casting

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