Novel tangent brick for ingate of cast steel pouring system

Abstract

The invention discloses a novel tangent brick for the ingate of a cast steel pouring system. The tangent brick comprises a brick body; and a pouring channel is provided in the brick body and consists of an inclined section and a vertical section, wherein the vertical section and the inclined section smoothly transit and are communicated with each other and the inclined section and the vertical section form an included angle of 135 degrees. According to the invention, it is guaranteed that molten steel stationarily and smoothly enters into the ingate from a horizontal runner, which enables the problem that impurities enter into the molten steel because the molten steel has eroded the ingate tangent brick to be avoided; and the unique design of the pouring channel ensures that the molten steel enters into a mold cavity from the gate of the ingate along a tangential direction, which enables damage of a mold under the impact of the molten steel to be avoided, the purpose of no change of components before and after pouring of the molten steel to be achieved and cast quality to be improved.

Description

technical field [0001] The invention belongs to the technical field of casting accessories, and in particular relates to a tangent brick for an inner runner in a novel cast steel gating system. Background technique [0002] At present, the pouring system of large steel castings, such as figure 1 As shown, the sprue 1, runner 2 and ingate 4 in the pouring system are all connected by using different shapes of refractory brick pipes (referred to as flow steel bricks), and the molten steel passes through the inner wall of the flow steel bricks. It flows into the mold cavity and solidifies to form a casting. In order to ensure the purity of the molten steel flowing into the cavity, it is necessary to require the flow steel brick to be resistant to high temperature and erosion. At the same time, its inner wall is required to be smooth, and the junction of the two brick pipes is smooth and smooth without dead ends, so as to ensure that the refractory material will not be washed du...

AI Technical Summary

Problems solved by technology

In the traditional gating system, the connection structure between the tangent brick forming the inner runner and the T-shaped tee pipe of the runner, such as Figure 2-4 As shown, the tangent brick 5 is designed as an inclined cylindrical tubular structure, and the angle between the pouring channel of the tangent brick 5 and the T-shaped tee pipe 3 is 45 degrees. The channel can smoothly flow into the mold, but a crescent-shaped boss is formed at the joint surface of the tangent brick 5 and the T-shaped tee pipe 3, which hinders the molten steel in the flow process, causing the molten steel to directly wash the side wall of the ingate, The side wall is eroded by molten steel, and the residue is brought into the casting, which seriously affects the molding quality of the casting, and even causes the casting to be scrapped

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