Induction furnace lining for enhancing corrosion resistance of metal liquid level

Abstract

The utility model discloses an induction furnace lining for enhancing corrosion resistance of a metal liquid level, which comprises a daub layer on the inner side of an intermediate frequency furnace, a furnace lining layer is arranged on the inner side of the daub layer, and a furnace lining core is arranged on the inner side of the furnace lining layer; the furnace lining mold core is formed by rolling and welding a steel plate with the thickness of 3-6 mm, and the position of the molten metal liquid level is of a concave structure. The service life of the furnace lining can be prolonged, and the maintenance amount and the safety risk are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medium frequency furnace smelting technology, specifically to an induction furnace lining that enhances the corrosion resistance of molten metal. Background Technology

[0002] Currently, many manufacturers commonly use in-furnace linings for medium-frequency / industrial-frequency induction furnaces, which are formed inside the furnace and suitable for capacities ranging from 100 kg to tens of tons. These linings are manufactured by manually or mechanically knotting them inside the furnace. They are widely used due to their low manufacturing cost and ease of use. The materials used to make the lining must have stable physicochemical properties, requiring the lining to resist slag and molten steel corrosion. In actual use, additives and metal oxides floating on the molten metal surface cause corrosion at the molten metal level inside the lining. Long-term corrosion leads to uneven lining thickness, increasing maintenance and repair requirements, reducing service life, and raising safety risks. In severe cases, the lining may need to be broken up, removed, and remanufactured, which is time-consuming, labor-intensive, and increases operating costs. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an induction furnace lining that enhances the corrosion resistance of molten metal surfaces, thereby improving the service life of the lining and reducing maintenance and safety risks.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A furnace lining for an induction furnace that enhances the corrosion resistance of molten metal surfaces includes a mortar layer inside the medium-frequency furnace. The furnace lining layer is provided inside the mortar layer, and a furnace lining core is provided inside the furnace lining layer. The furnace lining core is rolled and welded from a 3-6mm thick steel plate and has a concave structure at the molten metal surface.

[0006] Furthermore, the concave structure of the furnace lining core is matched with the convex structure of the furnace lining layer.

[0007] This utility model includes an inner mortar layer for a medium-frequency furnace, within which a furnace lining layer is formed, and within the furnace lining layer a furnace lining core is formed. The furnace lining core is made of rolled and welded steel plate with a thickness of 3-6mm. The thickness ensures the rigidity of the furnace lining, and the core is designed to be concave at the molten metal surface. The shape and volume of the furnace lining are controlled by the furnace lining core to achieve the designed effect.

[0008] By increasing the wall thickness of the furnace lining at a set location through the concave part of the furnace lining core, which is also the convex part of the furnace lining, the service life of the molten metal surface inside the furnace lining is extended to prevent corrosion.

[0009] The beneficial effects of this utility model are:

[0010] By increasing the wall thickness at the molten metal level inside the furnace lining, the service life of the furnace lining can be extended. This reduces production costs, ensures furnace construction quality and operational safety, improves production efficiency, and reduces labor intensity. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0012] In the figure, 1-furnace lining core, 2-furnace lining layer, 3-mortar layer, 22-concave structure. Detailed Implementation

[0013] The following description, in conjunction with specific examples, provides further clarification. Example

[0014] like Figure 1 As shown, an induction furnace lining for enhancing the corrosion resistance of molten metal includes a clay layer 3 on the inner side of the medium-frequency furnace, a furnace lining layer 2 on the inner side of the clay layer 3, and a furnace lining core 1 on the inner side of the furnace lining layer 2. The furnace lining core 1 is rolled and welded from a steel plate with a thickness of 3-6 mm, and has a concave structure 22 at the position of the molten metal surface.

[0015] The concave structure 22 of the furnace lining core is matched with the convex structure of the furnace lining layer.

[0016] During construction, check the integrity of the mortar layer 3, lay protective measures, and tie it in the furnace until it reaches the specified height. Then, place the furnace lining core 1. The furnace lining core 1 is made of rolled and welded steel plate with a thickness of 3-6mm, and has a concave structure 22 designed at the surface of the molten metal. When placing the furnace lining core, it should be centered, and care should be taken not to puncture the protective layer with the steel rod. During the tying process, frequently check whether the core is centered to prevent the furnace lining core from being crooked, which would cause uneven furnace lining wall thickness and reduce service life. When the sand layers added in batches reach the specified position, the furnace lining layer 2 is formed. The shape of the furnace lining core determines the shape of the furnace lining layer. The position of the concave structure 22 of the furnace lining core matches the position of the convex structure of the furnace lining layer, forming a reinforcement position for the furnace lining wall thickness.

Claims

1. A furnace lining for an induction furnace that enhances the corrosion resistance of molten metal, comprising a clay layer (3) on the inner side of the medium-frequency furnace, characterized in that: The inner side of the mortar layer (3) is provided with a furnace lining layer (2), and the inner side of the furnace lining layer (2) is provided with a furnace lining core (1); the furnace lining core (1) is made of steel plate rolled and welded with a thickness of 3~6mm, and has a concave structure (22) at the position of the molten metal surface.

2. The induction furnace lining for enhancing the corrosion resistance of molten metal surfaces according to claim 1, characterized in that: The concave structure (22) of the furnace lining core (1) is positioned to match the convex structure of the furnace lining layer (2).

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