An air-cooled steel ingot mold and its casting process

Abstract

The invention relates to an air cooling ingot mold and a pouring technology thereof. With the air cooling ingot mold and the pouring technology thereof, the time for steel ingot crystallization can beshortened, the production efficiency is improved, the inside crystalline structure of a steel ingot can be improved, and pouring is carried out while low power segregation, especially banded structure segregation, is reduced. Air guiding holes are formed in the mold wall of an original ingot mold, exhaust holes are formed in the outer side of the original ingot mold in a machining manner, each exhaust hole corresponds to one air guiding hole, an air guiding groove is formed in the bottom of the original steel ingot, the air guiding groove in the bottom of the original ingot mold communicateswith the air guiding holes in the mold wall of the ingot mold, air introducing holes communicating with the air guiding groove is formed in the side face of the bottom of the ingot mold in a machiningmanner, and the air introducing holes communicate with a compressed air device through a connection device. Influence cause by compressed air on the crystallization process of steel ingots is realized, the problem that the ingredient and structure segregation defects which are caused in the natural crystallization process and cannot be overcome in the process of subsequent machining is solved thoroughly, and the purposes of improving the production efficiency of mold casting and improving the crystalline structures are achieved.

Description

technical field [0001] The invention belongs to the technical field of air-cooling process design of steel ingots for die casting production, and relates to a method that can not only shorten the crystallization time of steel ingots and improve production efficiency, but also can improve the internal crystallization structure of steel ingots and reduce low-magnification segregation, especially band structure segregation. Cast air-cooled steel ingot mold and its pouring process. Background technique [0002] At present, most domestic steel ingots are produced by natural cooling, but with the continuous improvement of product quality requirements, the crystallization structure of steel ingots obtained by natural cooling can no longer meet the needs of subsequent production. Human intervention in the natural process is the development trend of the entire industry . The same industry has developed and tested a water-cooled steel ingot production device, but due to high-temperat...

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Problems solved by technology

[0002] At present, most domestic steel ingots are produced by natural cooling, but with the continuous improvement of product quality requirements, the crystallization structure of steel ingots obtained by natural cooling can no longer meet the needs of subsequent production. Human intervention in the natural process is the development trend of the entire industry

The same industry has developed and tested water-cooled steel ingot production equipment, but due to the high safety factor requirements of high-temperature molten steel for on-site water-cooled operations, water-cooled steel ingots have not been widely used

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