Crystallizer for semi-continuous casting of aluminum alloy

Abstract

The invention relates to a crystallizer for semi-continuous casting of aluminum alloy. A graphite lining is embedded in a cavity of a body; the body is provided with a water cavity; an upper cover is connected on the body, the bottom of the upper cover is provided with a lug boss, and the lug boss on the upper cover is matched with the water cavity of the body; the water cavity of the body is provided with two groups of cooling water holes, and the two groups of cooling water holes are distributed across; a filter is arranged in the water cavity of the body, and the upper end of the filter is fixed with the upper cover; and the bottom of the body is provided with a water inlet pipe head which is communicated with the filter. After the lug boss designed on the upper cover is assembled, the upper cover extends to the interior of the water cavity, so the crystallizer has good deformation resistance, and the service life of the whole crystallizer is prolonged; the water cavity is designed with the two groups of cooling water holes, and double rows of cross cooling water cool the ingots so as to increase watering points and cooling active regions of the cooling water on the ingots; and the filter ensures that the cooling water enters the cavity after filtering, and the filter can be directly detached on the upper cover, so the cleaning operation is simple and convenient.

Description

technical field [0001] The invention relates to a crystallizer for aluminum alloy semi-continuous casting, which belongs to the technical field of aluminum alloy semi-continuous casting. Background technique [0002] Direct cooling semi-continuous casting is currently the main way of producing aluminum alloy round ingots and slabs in the aluminum alloy industry. The liquid aluminum melt is poured into the space surrounded by the crystallizer and the dummy head. The aluminum melt will be cooled by the crystallizer and the dummy head and solidified along its boundary, which is a cooling. After the aluminum melt reaches a certain height in the crystallizer and the solidification shell has enough strength to support the aluminum melt, the dummy head will move down at a given casting speed. The solidified ingot will drop together with the dummy head. When the ingot is pulled out from the crystallizer, the cooling water in the crystallizer is directly sprayed on the surface of th...

AI Technical Summary

Problems solved by technology

In order to avoid aluminum leakage during the casting process, the liquid level of the aluminum melt is often controlled in the upper part of the crystallizer, and the cooling water sprayed from a small-angle single drainage curtain or water hole has a lower water penetration point on the ingot, and its cooling intensity is not high. High, the upward cooling area is low: so the secondary heating area of ​​the ingot is longer, and there are obvious segregation tumors on the surface; the cooling intensity is not high, and the ingot structure is coarse

[0004] In addition, semi-continuous casting has strict requirements on cooling water, especially without impurities. Impurities in the water will block the cooling water channel in the crystallizer, resulting in uneven cooling of the ingot, affecting the quality of the ingot, and even leading to casting failure. Therefore, frequent cleaning is required. Cooling water filter, this device is often installed on the main cooling water pipeline, and the cleaning operation is very inconvenient

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