CN201333519Y - Sliding plate brick for controlling flow rate of liquid steel - Google Patents

Abstract

The utility model relates to a sliding plate brick for controlling the flow rate of liquid steel; the sliding plate brick is of a cuboid shape with both ends being of a semi-circular shape; the cuboid is provided with a lug boss with a through hole; the length of the cuboid a is 440 to 460 mm, and the width c is 198 to 204 mm, and the height e is 48 to 52 mm; and the radiuses R1 and R2 (R1 is equal to R2) of the semi-circle on both ends of the cuboid are 98 to 102 mm, and the diameter d of the through hole is 59 to 61 mm, and the distance b from the central line to the left end of the through hole is 194 to 196 mm, and the diameter f of the end surface of the lug boss is 118 to 122 mm, and the diameter g of the bottom of the lug boss is 133 to 137 mm, and the height h of the lug boss is 16 to 18 mm. The sliding plate brick has good stability, strong anti-oxidization capacity and favorable capacity for resisting the erosion and the scouring of the liquid steel and the steel slag; when in use, the sliding plate brick is free from smoke and mist, and is free from polluting the environment; and the application effect of the sliding plate brick can reach four to five times.

Description

The sliding plate brick of control molten steel flow speed

Technical field

The utility model belongs to a kind of refractory material, is specifically related to a kind of sliding plate brick of controlling molten steel flow speed.

Background technology

The sliding plate brick of control molten steel flow speed is the vitals that steel-making connects the equipment of annotating, and is the valve that the control molten steel draws off, and can accurately control many advantages such as molten steel flow speed, therefore, is widely adopted in the whole world.But the sliding plate brick of present domestic employing mainly is unburned and conventional aluminium carbonaceous sliding plate brick that burn till, the material that this series products uses is with sintered alumina, bauxite chamotte and electric smelting and fused mullite are main raw material, part is added carbon component and antioxidant in matrix, bond adopts phenolic resins, through mixing and molding, ≤ 200 ℃ of oven dry or under reducing atmosphere, burn till and form the carbon combined fire-resistant material, the slide plate of this material is organized little close, pore is fine, and the carbon residue that contains some, so molten steel and slag liquid are difficult to erosion, but resistance to impact is because the oxidation of carbon, cause short texture, reduced anti-erosion again.Its shape major part bottom is a rectangular slab, and the through-hole diameter of boss is 65mm, and reaming is too fast in the use like this, be generally service life once, because its volume is big, and Heavy Weight, consumable material is many in the steel-making.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of sliding plate brick of controlling molten steel flow speed, it is synthetic by aluminium, zirconium and carbon, this brick has Heat stability is good, the opposing molten steel that oxidation resistance is strong and good and the erosion and the scouring capability of slag, in use there is not smog, free from environmental pollution, its result of use reaches more than 4～5 times.

The technical solution of the utility model: a kind of sliding plate brick of controlling molten steel flow speed, its shape is that two ends are the cuboid of semicircle, cuboid is provided with the boss of band through hole, the length a of cuboid is 440～460mm, width c is 198～204mm, height e is 48～52mm, the semicircle radius R 1=R2 at cuboid two ends is 98～102mm, through-hole diameter d is 59～61mm, the through hole center line is 194～196mm apart from the left end distance b, raised head face diameter f is 118～122mm, and boss bottom diameter g is 133～137mm, and concave station height h is 16～18mm.

The utility model compared with prior art has following beneficial effect: this brick has Heat stability is good, the opposing molten steel that oxidation resistance is strong and good and the erosion and the scouring capability of slag, in use do not have smog, free from environmental pollution, its result of use reaches more than 4～5 times.

Technical indicator is as follows:

Because reducing of its shape and through-hole diameter can make volume reduce, weight saving has reduced the consumption of steel-making material.

Description of drawings

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

Fig. 2 is along the profile of A-A hatching among Fig. 1.

The specific embodiment

Embodiment 1: a kind of sliding plate brick of controlling molten steel flow speed that is applied to the 300T ladle, its shape is that two ends are the cuboid of semicircle, and cuboid is provided with the boss of band through hole, and the length a of cuboid is 450mm, width c is 200mm, height e is 50mm, and the semicircle radius R 1=R2 at cuboid two ends is 100mm, and through-hole diameter d is 60mm, the through hole center line is 195mm apart from the left end distance b, raised head face diameter f is 120mm, and boss bottom diameter g is 135mm, and concave station height h is 17mm.

Claims (1)

1, a kind of sliding plate brick of controlling molten steel flow speed, the shape that it is characterized in that it is that two ends are the cuboid of semicircle, cuboid is provided with the boss of band through hole, the length a of cuboid is 440～460mm, width c is 198～204mm, height e is 48～52mm, the semicircle radius R 1=R2 at cuboid two ends is 98～102mm, through-hole diameter d is 59～61mm, the through hole center line is 194～196mm apart from the left end distance b, raised head face diameter f is 118～122mm, and boss bottom diameter g is 133～137mm, and concave station height h is 16～18mm.

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