Liquid steel casting equipment

Abstract

The invention discloses liquid steel casting equipment. The liquid steel casting equipment comprises an ingot mold, wherein the upper part of the ingot mold is provided with a hot top; the ingot mold is arranged on an ingot mold base plate; a steel flow channel is formed in the ingot mold base plate, is communicated with a central casting pipe arranged on one side of an ingot mold body and is communicated with casting gates at the bottom of the ingot mold; and at least one casting gate is formed at the position which is deviated from the bottom center of the ingot mold. The liquid steel casting equipment can prevent the phenomenon of slag entrainment in the process of casting liquid steel by changing the position and the quantity of the ingot mold casting gates, deviating the casting gates from the bottom center or increasing a plurality of casting gates, changes the flow field distribution and the temperature field distribution of the liquid steel inside the ingot mold in the process of casting the liquid steel or after the casting, overcomes the defects of center segregation and loosing of steel ingots and can change the segregation positions of the steel ingots to make a segregation off center close to a steel ingot rolling surface at the same time.

Description

[0001] technical field [0002] The invention belongs to the technical field of production equipment for smelting, and in particular relates to a liquid steel pouring equipment. Background technique [0003] With the development of the national economy, steel for nuclear power, steel for boilers and pressure vessels, steel for wind power flanges, steel for bridges, high-rise buildings and other structural steels have increasingly strict requirements on the internal quality of steel plates. To ensure the internal quality of steel plates, most of them use forging, Electroslag remelting and directional solidification are used to produce this type of steel plate, but due to its long production cycle and high manufacturing costs, enterprises are restricted from further reducing production costs. For steel ingots cast by conventional ingot molds, the sprue is at the center of the ingot mould. According to the knowledge of metallurgical transmission principles, the relative tempera...

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Problems solved by technology

[0003] With the development of the national economy, steel for nuclear power, steel for boilers and pressure vessels, steel for wind power flanges, steel for bridges, high-rise buildings and other structural steels have increasingly strict requirements on the internal quality of steel plates. To ensure the internal quality of steel plates, most of them use forging, Electroslag remelting and directional solidification are used to produce this type of steel plate, but due to its long production cycle and high manufacturing costs, it restricts enterprises to further reduce production costs

For steel ingots cast by conventional ingot molds, the sprue is at the center of the ingot mould. According to the knowledge of metallurgical transmission principles, the relative temperature of the steel flow in the vertical direction of the sprue is high, which will easily cause serious segregation and central porosity inside the ingot. Severe segregation and porosity in the center of the steel ingot are difficult to eliminate and alleviate in subsequent processes. Therefore, the rolled steel plate, especially the extra-thick steel plate ≥ 200mm, often has microscopic defects inside, which may easily cause flaw detection failures.

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