Combined current stabilizer

Abstract

The utility model discloses a combined type current stabilizer which comprises a main cavity and a base, a cavity penetrating through the upper portion and the lower portion of the main cavity is formed in the main cavity, the cavity and the main cavity are each of a circular-truncated-cone-shaped structure with the thin upper portion and the thick lower portion, and a circular-truncated-cone-shaped protruding block used for being inserted into the main cavity is arranged on the base. And the main cavity is connected with the base through a refractory material in a plugging manner. The mold has the advantages that the mold of the special-shaped structure of the main body cavity is integrally, conveniently and easily demolded and produced, the production pressure is reduced, the production efficiency is improved, and a thought is provided for the production mode of special-shaped refractory products.

Description

Technical Field

[0001] The utility model relates to the field of flow stabilizers, in particular to a combined flow stabilizer. Background Art

[0002] In the process of iron and steel metallurgy, molten steel is transformed into steel billets. The most popular process is continuous casting. An indispensable part of the continuous casting process is the injection of molten steel into the tundish and then into the crystallizer. The tundish flow stabilizer plays an important role in ensuring the safety and quality of the transfer.

[0003] The tundish flow stabilizer is mainly used in the molten steel receiving area of ​​the tundish to change the flow pattern of molten steel, guide the flow of molten steel, reduce molten steel splashing, prevent molten steel from rolling up slag and forming a large number of internal defects in the steel billet, and promote the floating of inclusions in the molten steel.

[0004] There are several structures of existing tundish flow stabilizers, which are mainly formed by casting, and there are also integral embedded structures and their manufacturing methods, such as patent CN 109591158 A, which is integrally casted with an integral magnesia carbon brick inner cavity and an outer steel fiber aluminum-magnesium castable; tundish composite flow stabilizer and its preparation method (patent CN 103769567 A), which uses olive sand castable and magnesium castable as castables for the impact part and slag line part respectively, and is compositely casted and vibrated.

[0005] In terms of material formulation, the formula and production method of the tundish flow stabilizer (patent CN 105254312 A) uses magnesia, silicon powder, stainless steel fiber, organic fiber, etc. as the main raw materials, adding water to mix into refractory slurry and casting and vibration molding; a new type of tundish impact brick disclosed in publication number CN1844052A uses 97 fused magnesia, brown corundum, activated alumina powder, cement and chromium oxide powder as the main raw materials, with dextrin as the binder, and is prepared after vibration molding and high-temperature sintering at 1000°C.

[0006] Currently, casting molding is commonly used in the production and manufacturing methods of tundishes. Due to the limitations of production molds, process conditions and casting molding processes, disassembly and assembly of molds is relatively complicated and time-consuming, the daily output is limited and low, the production efficiency is low, and the production cost is high. Utility Model Content

[0007] The utility model aims to provide a combined flow stabilizer.

[0008] The innovation of the utility model is that the integrated integrity of the main cavity special-shaped structure mold is achieved, which is convenient and easy to demould, reduces production pressure, improves production efficiency, and provides a new idea for the production mode of special-shaped refractory products.

[0009] In order to achieve the above utility model purpose, the technical solution of the utility model is:

[0010] A combined flow stabilizer includes a main cavity and a base, wherein the main cavity is provided with a cavity penetrating the main cavity from top to bottom, the cavity and the main cavity are both truncated cone structures with a thin top and a thick bottom, and the base is provided with a truncated cone shaped protrusion for inserting into the main cavity; the truncated cone structure mainly bears the thermal scouring of high-temperature molten steel and enhances the anti-scouring ability. The main cavity and the base are connected by sealing with refractory materials.

[0011] Furthermore, the outer wall of the main cavity is provided with a plurality of grooves, so that when in use, the flow stabilizer can be fully pressed externally by the surrounding materials to prevent floating.

[0012] Furthermore, the groove is located near the bottom of the main cavity, which facilitates the use of less external materials to achieve a better filling and compacting effect, thereby forming an embedded nearly integrated structure to prevent floating and increase safety.

[0013] Furthermore, the cavity wall is provided with a stepped section; the advantage is that the molten steel entering the flow stabilizer of the tundish is more stable during the falling and reflux process and the probability of collision of inclusions during the reflux process of the molten steel is increased.

[0014] Furthermore, the step section is transitioned through an arc structure, which makes production and demoulding smoother, while greatly reducing the probability of stress concentration and cracking in the sharp docking mode.

[0015] Furthermore, the top of the main cavity is provided with more than two lifting pieces to facilitate lifting.

[0016] Furthermore, the main cavity and the base are formed by hydraulic vibration. The refractory material is placed in a specific mold, and the material is compacted and vibrated by hydraulic pressure and auxiliary vibration. The streamlined design of the mold cavity core facilitates the conduction of pressure, so that the material is subjected to relatively uniform pressure and becomes dense, and obtains considerable bonding strength. This product does not have too many restrictions on the types of raw materials, and the raw materials used are more selective according to different steelmaking and application requirements.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model adopts a split combination mode, which solves some key limitations of the traditional flow stabilizer during the overall molding, greatly reduces the requirements for mold design and disassembly and assembly, and also saves a lot of time for mold disassembly and assembly, and the production yield is also greatly improved. More importantly, it can be repeated multiple times a day. The traditional casting molding mode can only produce once a day with a single mold, which greatly improves the daily production efficiency, improves the yield, and reduces production costs. The inner core demolding of the main cavity in the utility model can be completed by the one-time demolding of the overall core mold, and then it can be cyclically produced multiple times, that is, the daily output is determined by the production time and investment time of a single product. In general, the production efficiency is high and the yield is also high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 Schematic diagram of the structure of the main cavity.

[0021] Figure 3 A schematic diagram of the structure of the base.

[0022] In the figure:

[0023] 1. Main cavity; 2. Base; 3. Cavity; 4. Cone-shaped protrusion; 5. Groove; 6. Step section; 7. Lifting piece. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0025] Embodiment 1: A combined flow stabilizer comprises a main cavity 1 and a base 2, wherein the main cavity 1 and the base 2 are both formed by hydraulic vibration, and more than two lifting parts 7 are provided on the top of the main cavity 1.

[0026] The main cavity 1 is provided with a cavity 3 which runs through the main cavity from top to bottom. Both the cavity 3 and the main cavity 1 are truncated cone structures which are thin at the top and thick at the bottom. A step section 6 is provided on the wall of the cavity 3, and the step section 6 is transitioned by an arc structure.

[0027] A truncated cone-shaped protrusion 4 for inserting into the main cavity 1 is provided on the base 2; the main cavity 1 and the base 2 are connected by sealing with refractory material.

[0028] The outer wall of the main cavity 1 is provided with a plurality of grooves 5, and the grooves 5 are located near the bottom of the main cavity 1.

[0029] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A combined flow stabilizer, characterized in that: It includes a main cavity and a base, the main cavity is provided with a cavity running through the main cavity from top to bottom, the cavity and the main cavity are both truncated cone structures that are thin at the top and thick at the bottom, the base is provided with a truncated cone-shaped protrusion for inserting into the main cavity; the main cavity and the base are connected by sealing with refractory materials.

2. The combined flow stabilizer according to claim 1, characterized in that: The outer wall of the main cavity is provided with a plurality of grooves.

3. The combined flow stabilizer according to claim 2, characterized in that: The groove is located near the bottom of the main cavity.

4. The combined flow stabilizer according to claim 1, characterized in that: The cavity wall is provided with a stepped section.

5. The combined flow stabilizer according to claim 4, characterized in that: The step section is transitioned through an arc structure.

6. The combined flow stabilizer according to claim 1, characterized in that: More than two lifting pieces are arranged on the top of the main cavity.

7. The combined flow stabilizer according to claim 1, characterized in that: The main cavity and the base are both formed by hydraulic vibration.

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