Protective transition cover of atmosphere protection electroslag remelting furnace

Abstract

The utility model discloses a protective transition cover of an atmosphere protection electroslag remelting furnace, which comprises a transition cover arranged on the protective cover of the atmosphere protection electroslag remelting furnace, a plurality of groups of connecting holes are arranged on the periphery of the transition cover, and connecting pieces are arranged in the connecting holes. A plurality of groups of fixing holes matched with the connecting pieces are formed in the protective cover of the atmosphere protection electroslag remelting furnace, and the transition cover is connected to the fixing holes through the connecting pieces. Compared with a traditional bolt fixing mode, the connecting piece, the reset spring and other structures are adopted, more convenient and rapid installation and detachment can be achieved, special tools are not needed any more, operation steps are greatly simplified, and maintenance time is shortened.

Description

Technical Field

[0001] This utility model relates to a protective transition cover for an atmosphere-protected electroslag remelting furnace. Background Technology

[0002] Electroslag remelting (ESR) is a special metallurgical method that uses slag heat resistance in a water-cooled crystallizer to remelt and refine consumable electrodes, and then resolidify them into steel ingots. It has significant advantages such as slag washing and refining, sequential solidification, ingots free of large inclusions, minimal macroscopic and microscopic segregation, and uniform composition and microstructure.

[0003] Electroslag remelting (ESR) furnaces with protective atmospheres have extremely high requirements for the slag feeding rate, slag quantity, and oxygen content of the solid protective slag. The basic principle of ESR remelting large steel ingots is the same as that of medium and small steel ingots. However, because the ESR remelting current for large steel ingots reaches tens of thousands of amperes, the inductive reactance causes a significant voltage drop in the power grid. Furthermore, the melting time is long, sometimes reaching tens to hundreds of hours for a single ingot, resulting in significant variations in slag composition. The biggest drawback of ESR remelting is that hydrogen cannot be removed during the melting process, and hydrogen is more harmful to large steel ingots. Therefore, based on these issues, the slag feeding machine for large steel ingot ESR remelting must employ some special process measures.

[0004] During the slag addition process, the transition cover plays a crucial role in ensuring that the slag is added to the crystallizer at a uniform speed by the slag feeder.

[0005] Existing protective covers are typically connected to the main equipment using simple bolt fixing. Installing and disassembling these covers requires specialized tools, and the procedures are cumbersome and time-consuming, increasing the difficulty and cost of equipment maintenance. Therefore, a protective transition cover for an atmosphere-protected electroslag remelting furnace is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a protective cover for an atmosphere-protected electroslag remelting furnace, in order to solve the problem mentioned in the background art that the connection between the protective cover and the main equipment is usually fixed with simple bolts, and the installation and disassembly require special tools, which is cumbersome and time-consuming.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a protective transition cover for an atmosphere-protected electroslag remelting furnace, comprising a transition cover disposed on the protective cover of the atmosphere-protected electroslag remelting furnace, wherein multiple sets of connection holes are formed on the outer periphery of the transition cover, and connectors are disposed inside the connection holes.

[0008] Multiple sets of fixing holes are provided on the protective cover of the atmosphere-protected electroslag remelting furnace to mate with the connecting parts.

[0009] The transition cover is connected to the fixing hole via a connector.

[0010] Preferably, the connector includes an outer bushing disposed in the connecting hole, a reset groove is provided on the upper part of the outer bushing, an "L"-shaped positioning groove is provided inside the reset groove, and a connecting bolt is slidably connected inside the reset groove.

[0011] Preferably, the lower two sides of the outer bushing are provided with rolling ball grooves, and positioning balls are connected inside the rolling ball grooves.

[0012] Preferably, a reset spring is provided inside the reset groove, and the reset spring is located below the connecting bolt, so that the connecting bolt can move elastically inside the reset groove through the reset spring.

[0013] Preferably, a limiting liner is provided on the upper part of the connecting bolt, and positioning plates that mate with "L"-shaped positioning grooves are provided on both sides of the limiting liner. The outer diameter of the limiting liner matches the inner diameter of the reset groove, so that the limiting liner restricts the stroke of the connecting bolt.

[0014] Preferably, the outer periphery of the connecting bolt is provided with an arc-shaped groove so that the positioning ball rolls down through the arc-shaped groove to the inner side of the outer bushing.

[0015] Preferably, the opening diameter of the rolling ball groove in the outer bushing is smaller than the diameter of the positioning ball, and the rolling ball groove is obliquely arranged on the lower part of the inner wall of the outer bushing so that the positioning ball rolls into the outer bushing by gravity.

[0016] Preferably, an annular groove that mates with the positioning ball is provided on the inner circumferential side of the fixing hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Compared with the traditional bolt fixing method, this utility model, through the connection parts and return spring, can achieve more convenient and faster installation and disassembly, eliminating the need for special tools, greatly simplifying the operation steps and reducing maintenance time.

[0019] The combination of connectors and positioning balls allows the protective cover to be quickly fixed and disassembled, thereby improving the connection efficiency of the equipment.

[0020] By designing specific connectors, rolling ball grooves, and positioning balls, the connection between the protective cover and the main equipment has been improved, making the fixation tighter and less prone to loosening, thus enhancing the durability of the protective cover. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0023] Figure 3 This is an enlarged schematic diagram of the structure at point A in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the lower structure of an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the fixing hole structure according to an embodiment of the present invention;

[0026] Figure 6 This is an enlarged schematic diagram of the structure at point B in an embodiment of this utility model;

[0027] Figure 7 This is a schematic diagram of the connecting bolt structure according to an embodiment of the present utility model.

[0028] In the diagram: 1. Transition cover; 101. Connecting hole; 2. Protective cover; 201. Fixing hole; 202. Annular groove; 3. Connector; 301. Outer bushing; 3011. Rolling ball groove; 302. Reset groove; 3021. Positioning groove; 303. Connecting bolt; 3031. Limiting liner; 3032. Arc-shaped groove; 3033. Positioning plate; 304. Positioning ball; 305. Reset spring. Detailed Implementation

[0029] To address the common problem of simple bolt fixing for connecting the protective cover to the main equipment, which requires specialized tools for installation and disassembly, resulting in cumbersome and time-consuming procedures, this utility model provides a protective transition cover for an atmosphere-protected electroslag remelting furnace. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Please see Figure 1-7This utility model provides a protective transition cover for an atmosphere-protected electroslag remelting furnace, including a transition cover 1 disposed on a protective cover 2 of the atmosphere-protected electroslag remelting furnace. Multiple sets of connection holes 101 are formed on the outer periphery of the transition cover 1. A connector 3 is disposed inside each connection hole 101. The connector 3 includes an outer bushing 301 disposed within the connection hole 101. A reset groove 302 is formed on the upper part of the outer bushing 301, and an "L"-shaped positioning groove 3021 is formed inside the reset groove 302. A connecting bolt 303 is slidably connected inside the reset groove 302. Rolling ball grooves 3011 are formed on both sides of the lower part of the outer bushing 301, and positioning balls 304 are connected inside the rolling ball grooves 3011. A reset spring 305 is disposed inside the reset groove 302, and the reset spring 305 is located below the connecting bolt 303, allowing the connecting bolt 303 to move elastically within the reset groove 302 via the reset spring 305. The upper part of the connecting bolt 303 is provided with a limiting liner 3031, and the two sides of the limiting liner 3031 are provided with positioning plates 3033 that cooperate with the "L"-shaped positioning groove 3021. The outer diameter of the limiting liner 3031 cooperates with the inner diameter of the reset groove 302, so that the limiting liner 3031 restricts the stroke of the connecting bolt 303. An arc-shaped groove 3032 is opened on the outer periphery of the connecting bolt 303, so that the positioning ball 304 rolls down into the inner side of the outer bushing 301 through the arc-shaped groove 3032. The opening diameter of the rolling ball groove 3011 in the outer bushing 301 is smaller than the diameter of the positioning ball 304, and the rolling ball groove 3011 is located at the lower part of the inner wall of the outer bushing 301 at an angle, so that the positioning ball 304 rolls down into the outer bushing 301 by gravity.

[0031] Multiple sets of fixing holes 201 are provided on the protective cover 2 of the atmosphere-protected electroslag remelting furnace to mate with the connecting parts 3.

[0032] The transition cover 1 is connected to the fixing hole 201 via the connector 3.

[0033] An annular groove 202 is provided on the inner circumferential side of the fixing hole 201 to cooperate with the positioning ball 304.

[0034] The working principle of the protective transition cover for an atmosphere-protected electroslag remelting furnace provided by this utility model is as follows:

[0035] Installation process: Positioning ball 304 aligns the connector 3 of the transition cover 1 with the fixing hole 201 on the electroslag remelting furnace protective cover 2. Insert the connector 3 into the connection hole 101 of the transition cover 1.

[0036] Pressing the connecting bolt 303 compresses the return spring 305, causing it to slide within the return groove 302 until the arc-shaped groove 3032 of the connecting bolt 303 moves below the positioning ball 304. When the rolling ball groove 3011 of the outer bushing 301 is located on the side of the annular groove 202 of the fixing hole 201 of the protective cover 2, the pressing action on the connecting bolt 303 is released, and the return spring 305 elastically elongates, controlling the connecting bolt 303 to move upward. The connecting bolt 303 moves upward through the arc-shaped groove 3032, squeezing the positioning ball 304. The positioning ball 304 is then inserted into the annular groove 202 through the rolling ball groove 3011, achieving rapid fixation of the transition cover 1 and the protective cover 2.

[0037] Disassembly process: Press the connecting bolt 303 again with a screwdriver. The arc-shaped groove 3032 of the connecting bolt 303 moves down, causing the positioning ball 304 to roll from the rolling ball groove 3011 into the arc-shaped groove 3032 under the action of gravity, and disengage from the annular groove 202. At the same time, the positioning plate 3033 of the limiting liner 3031 moves along the positioning groove 3021. Rotate the connecting bolt 303 with a screwdriver to the end of the positioning groove 3021. At this time, move the transition cover 1 out from above the protective cover 2 to complete the quick disassembly of the transition cover 1 and the protective cover 2.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective transition cover (1) for an atmosphere-protected electroslag remelting furnace, characterized in that: The system includes a transition cover (1) installed on the protective cover (2) of the atmosphere-protected electroslag remelting furnace. The outer periphery of the transition cover (1) has multiple sets of connection holes (101), and a connector (3) is provided inside the connection holes (101). Multiple sets of fixing holes (201) that cooperate with the connectors (3) are provided on the protective cover (2) of the electroslag remelting furnace under atmosphere protection. The transition cover (1) is connected to the fixing hole (201) via the connector (3).

2. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 1, characterized in that: The connector (3) includes an outer bushing (301) disposed in the connecting hole (101), a reset groove (302) is provided on the upper part of the outer bushing (301), an "L"-shaped positioning groove (3021) is provided inside the reset groove, and a connecting bolt (303) is slidably connected inside the reset groove (302).

3. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 2, characterized in that: The lower two sides of the outer bushing (301) are provided with rolling ball grooves (3011), and positioning balls (304) are connected inside the rolling ball grooves (3011).

4. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 3, characterized in that: A reset spring (305) is provided inside the reset groove (302), and the reset spring (305) is located below the connecting rod (303) so that the connecting rod (303) can move elastically inside the reset groove (302) through the reset spring (305).

5. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 4, characterized in that: The upper part of the connecting rod (303) is provided with a limiting liner (3031), and the two sides of the limiting liner (3031) are provided with positioning plates (3033) that cooperate with the "L"-shaped positioning groove (3021). The outer diameter of the limiting liner (3031) cooperates with the inner diameter of the reset groove (302) so that the limiting liner (3031) restricts the stroke of the connecting rod (303).

6. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 5, characterized in that: The outer periphery of the connecting bolt (303) is provided with an arc-shaped groove (3032) so that the positioning ball (304) rolls down through the arc-shaped groove (3032) to the inner side of the outer bushing (301).

7. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 6, characterized in that: The opening diameter of the rolling ball groove (3011) on the outer bushing (301) is smaller than the diameter of the positioning ball (304), and the rolling ball groove (3011) is located at the lower part of the inner wall of the outer bushing (301) at an angle, so that the positioning ball (304) rolls into the outer bushing (301) by gravity.

8. The protective transition cover (1) for an atmosphere-protected electroslag remelting furnace according to claim 7, characterized in that: An annular groove (202) that mates with a positioning ball (304) is provided on the inner circumferential side of the fixing hole (201).

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