CN201333520Y - Sliding brick for controlling flowing speed of molten steel - Google Patents

Abstract

The utility model relates to a sliding brick for controlling the flow rate of molten steel. Its shape is a cuboid with a boss, the two ends of the bottom plate are arc-shaped, and the two ends of the boss are also arc-shaped. Holes; the length a of the cuboid is 298-302mm, the width b is 208-212mm, the thickness c is 42-46mm, the diameter d of the through hole is 28-32mm, the distance e from the center line of the through hole to the left end face is 118-122mm, the cuboid bottom plate The thickness f is 19-21 mm, and the radius R1=R2 of the arcs at both ends is 103-107 mm. The utility model has good thermal stability, strong anti-oxidation ability and good ability to resist erosion and scour of molten steel and steel slag, has no smoke in use, does not pollute the environment, and has a use effect of more than 4 to 5 times.

Description

Skateboard bricks to control the flow rate of molten steel

technical field

The utility model belongs to a refractory material, in particular to a sliding brick for controlling the flow rate of molten steel.

Background technique

The sliding brick to control the flow rate of molten steel is an important part of the steelmaking continuous injection equipment, and it is a valve to control the discharge of molten steel. It can accurately control the flow rate of molten steel and many other advantages. Therefore, it is widely used all over the world. However, the sliding bricks currently used in China are mainly ordinary aluminum-carbon sliding bricks that are unfired and fired. The materials used in this type of product are mainly sintered alumina, high-alumina bauxite clinker, and fused and sintered mullite. Partially add carbon components and antioxidants in the matrix, the binder is made of phenolic resin, after kneading and molding, drying at ≤ 200 ° C or firing in a reducing atmosphere to form a carbon-bonded refractory material, the slide plate of this material The structure is fine and dense, the pores are fine, and it contains a certain amount of residual carbon, so molten steel and slag are difficult to corrode, but the impact resistance is due to the oxidation of carbon, which leads to loose structure and reduces corrosion resistance. The bottom of most of its shape is a rectangular plate, and the diameter of the through hole of the boss is 65mm. In this way, the hole expansion is too fast in use, and the service life is generally once. Because of its large size and heavy weight, it consumes a lot of materials in steelmaking.

Contents of the invention

The technical problem to be solved by the utility model is to provide a sliding brick for controlling the flow rate of molten steel, which is composed of aluminum, zirconium and carbon. The brick has good thermal stability, strong oxidation resistance and good resistance to the erosion of molten steel and steel slag And flushing ability, no smoke in use, no pollution to the environment, its use effect can reach more than 4 to 5 times.

The technical scheme of the utility model: a sliding brick for controlling the flow rate of molten steel, its shape is a cuboid with a boss, the two ends of the bottom plate are arc-shaped, the two ends of the boss are also arc-shaped, and the cuboid is provided with a sinker. The through hole of the hole; the length a of the cuboid is 298~302mm, the width b is 208~212mm, the thickness c is 42~46mm, the diameter d of the through hole is 28~32mm, and the distance e between the center line of the through hole and the left end face is 118~122mm , the thickness f of the cuboid bottom plate is 19-21mm, and the radius R1=R2 of the arc at both ends is 103-107mm.

Compared with the prior art, the utility model has the following beneficial effects: the brick has good thermal stability, strong oxidation resistance and good resistance to erosion and erosion of molten steel and steel slag, and there is no smoke in use and does not pollute the environment. The effect is more than 4 to 5 times.

The technical indicators are as follows:

Due to the reduction of its shape and the diameter of the through hole, the volume and weight can be reduced, and the consumption of steelmaking materials can be reduced.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is a cross-sectional view along line A-A in Fig. 1 .

Detailed ways

Embodiment 1: A sliding brick for controlling the flow rate of molten steel applied to a 40T ladle. Its shape is a cuboid with bosses. A through hole with a counterbore; the length a of the cuboid is 300 mm, the width b is 210 mm, the thickness c is 44 mm, the diameter d of the through hole is 30 mm, the distance e from the center line of the through hole to the left end face is 120 mm, and the thickness f of the bottom plate of the cuboid is 20 mm. The radius R1=R2 of the arc at both ends is 105mm.

Claims (1)

1, a kind of sliding plate brick of controlling molten steel flow speed, it is characterized in that it be shaped as the band boss cuboid, the base plate two ends are circular arc, the two ends of boss also are circular arc, cuboid be provided with the band counterbore through hole; The length a of cuboid is 298～302mm, and width b is 208～212mm, and thickness c is 42～46mm, through-hole diameter d is 28～32mm, the through hole center line is 118～122mm apart from the left side apart from e, and cuboid base plate thickness f is 19～21mm, and the radius R 1=R2 of two ends circular arc is 103～107mm.

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