A kind of cooling method of cast aluminum products to prevent steam explosion

Abstract

The invention relates to a cast aluminum product cooling method capable of preventing steam explosion. The cast aluminum product cooling method is related to a cooling well body and is characterized in that the cooling well body is internally provided with a partition plate, an inner cavity of the cooling well body is partitioned into an upper cavity and a lower cavity by the partition plate, andcooling water is stored in the upper cavity; a plurality of through hole enabling the upper cavity and the lower cavity to communicate are formed in the partition plate at intervals; a gas inlet holecommunicating with the lower cavity is formed in the side wall of the cooling well body; carbon dioxide or nitrogen with the pressure being 0.01-0.05 MPa is introduced into the lower cavity through the through holes, a gas cushion layer is formed in the lower cavity, gas in the lower cavity can enter the upper cavity continuously through all the through holes, and a continuous turbulent flow or acontinuous bubble flow is formed in the upper cavity; cooling water in the upper cavity is pumped by a pump and fed into a cooling channel of a casting mold to cool an aluminum product in the mold; and the heat-exchanged cooling water returns into the upper cavity of the cooling well body through a circulating channel.

Description

technical field [0001] The invention relates to the field of metal casting equipment, in particular to a casting cooling method for aluminum products. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry, and its main production processes are casting, extrusion and surface treatment. Melting and casting is the first process of aluminum alloy production. Under certain casting process conditions, the smelted aluminum liquid is cooled and cast into round casting rods of various specifications through the deep well casting system. At present, the deep well casting process generally uses water as the cooling medium, and it is stored in the deep well below the casting system. In the actual production process, misoperation or device failure may cause a large amount of high-temperature molten aluminum to overflow into the deep well, and directly contact with the cooling water to cause a steam explosion. This typ...

AI Technical Summary

Problems solved by technology

For example, the application of some explosion-proof coatings can reduce the probability of aluminum liquid-water explosion to a certain extent and reduce the consequences of explosion accidents. However, explosion-proof coatings are expensive, and the coating process consumes a lot of manpower and time. Prevent the occurrence of explosion accidents, and even produce toxic and harmful substances, causing secondary problems such as environmental pollution

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