CN2204668Y - Ingot Chassis Impact Pads - Google Patents

Abstract

The utility model discloses a protection device for an ingot chassis of an upper casting method. This device adds an anti-scour pad on the ingot chassis, which effectively solves the problem of continuous erosion and melting loss of the ingot chassis by high-temperature and high-speed molten steel. The feature of the impact pad is that it adopts a multi-layer composite structure. Due to the characteristics of this structure, the life of the chassis can be significantly improved; the labor intensity of workers is reduced; the consumption of raw materials is reduced; the whole mold and demoulding are smoother. When this anti-shock pad is used in conjunction with a concave chassis or a flat chassis, it can also protect the stable shape of the tail of the steel ingot, which is beneficial to ensuring the yield of ingots and improving the yield of finished products. Can be widely used in boiling steel and partially killed steel top casting method.

Description

The utility model relates to a protection device for an ingot chassis, in particular to a protection device for preventing the ingot chassis from being washed away by high-temperature molten steel and being melted.

When the boiling steel and part of the killed steel are cast by the upper casting method, the high-temperature molten steel falls from the ladle nozzle several meters high and is injected into the ingot mold. At this time, the cast iron chassis at the bottom of the mold is rapidly melted by the high-temperature high-speed molten steel. , Seriously affect the life of the chassis, increase the workload of repairing the chassis and the consumption of raw materials. In order to solve the above problems, the Soviet Union added cast steel pads to the chassis, and each ingot consumed dozens of kilograms of cast steel. Japan uses graphite bottom pads, which are easily stuck by steel ingots and difficult to repair. Baosteel uses chassis coatings, iron plates, granular iron, and chassis repair materials. The cost is high, and the impact resistance effect is not ideal. The chassis is often washed out of the big pit, which not only affects the life of the chassis, but also affects the yield of steel ingots. The applicant has also trial-produced a permanent type anti-shock pad, which has good anti-shock performance, but it cannot withstand the impact during on-site unspinning and is easily broken.

In order to effectively protect the ingot chassis and solve the problems of high cost and poor effect in the existing anti-scouring measures, the utility model designs a disposable anti-scouring pad that can effectively resist high-temperature molten steel erosion.

The utility model adopts a multi-layer composite structure. The size and plane shape of the anti-shock pad depend on the size and shape of the steel ingot. The planar shape can be square, rectangular, circular, oval or polygonal. The composite structure includes an impact-resistant layer, a high-temperature-resistant layer, and a backing layer. The impact-resistant layer is made of steel plate or resin sand impact-resistant plate, and the high-temperature resistant layer is made of silicon, aluminum, magnesium or carbonaceous refractory materials. The backing layer can be a steel plate or a supporting plate with protective properties. It is also possible to use only the impact-resistant layer and the high-temperature-resistant layer. The composite layers are bonded or mechanically bonded with an adhesive to form a whole.

The utility model replaces the steel ingot every time it is cast, so that the chassis is free from the impact of molten steel. Compared with the existing anti-shock measures, the life of the chassis is significantly improved; the labor intensity of workers is reduced; the consumption of raw materials is significantly reduced; the whole mold and demoulding are smoother. When this anti-shock pad is used in conjunction with a concave chassis or a flat chassis, it can also ensure the stability of the shape of the tail of the steel ingot, which is beneficial to ensuring the yield of ingots and improving the yield.

Accompanying drawing 1 is a circular three-layer, Figure 2 is a polygonal five-layer, and Figure 3 is a rectangular two-layer anti-scourr pad. It should be pointed out that the number of layers of the composite layer has nothing to do with the plane shape, and this figure only illustrates the change of the plane shape and the number of layers.

The utility model is described in further detail below in conjunction with the accompanying drawings of the circular three-layer anti-shock pad.

As can be seen from the figure, the upper part of the anti-shock pad is an anti-shock layer (1), made of a 5 mm thick steel plate, with three nail holes (4) for fixing with the chassis on the steel plate. The middle part is the high temperature resistant layer (2), which is made of high alumina refractory material and aluminum phosphate binder, with a thickness of 3 mm. The bottom is the backing layer (3), made of 1 mm steel plate. The three layers are bonded together with phenolic resin to form a whole. When in use, use a nail gun to inject the nail hole into the anti-scouring pad and the ingot chassis to ensure that the pad and the chassis are fixed and will not be floated or washed away by molten steel.

Claims (3)

1. An ingot chassis is equipped with a protection device on the ingot chassis anti-shock pad, which is characterized in that the composite structure includes an impact-resistant layer, a high-temperature resistant layer, and a lining layer. 2. The ingot chassis anti-shock pad according to claim 1, characterized in that there are nail holes for fixing the chassis on the anti-shock layer. 3. The ingot-cast chassis anti-shock pad according to claim 1, characterized in that the composite layers are bonded with an adhesive or mechanically combined to form a whole.