Double-gas protection device for electroslag remelting

Abstract

The utility model provides an electroslag remelting double-gas protection device, which belongs to the technical field of electroslag remelting and comprises a first protection cover and a second protection cover arranged on the upper portion of the first protection cover and rotationally connected with the first protection cover, and a rotating structure is correspondingly arranged between the first protection cover and the second protection cover. The rotating structure comprises a thrust bearing embedded in the upper portion of the first protective cover, an annular protrusion matched with the inner ring face of the thrust bearing is arranged on the lower portion of the second protective cover, a sealing ring is embedded in the base face of the outer side of the annular protrusion, and an open groove for installing the sealing ring is formed in the base face of the outer side of the annular protrusion. The gas supply hole of the first cover body is externally connected with argon supply equipment, and the gas inlet of the second cover body is externally connected with dry air supply equipment, so that in the electroslag remelting process, the supply speed of gas is controlled, and the second cover body is rotated in a matched manner, so that horizontal and downward injection can be realized for injection protection; and gas injection at different positions can be adjusted according to conditions, the injection effect is guaranteed, and the hydrogen and oxygen content in the electroslag ingot is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electroslag remelting, in particular to electroslag remelting double gas protection device. BACKGROUND

[0002] Electroslag remelting is a method of using the resistance heat generated by the current through the slag as a heat source for smelting, and the electroslag remelting can effectively remove non-metallic inclusions and desulfurize in steel. In the process of electroslag remelting refining, a protective gas is usually inputted into the interior for protection. In the prior art, electroslag remelting smelting is generally smelted in a normal pressure environment, and the smelting is easily affected by the environmental humidity and air heat exchange circulation to cause the liquid slag to absorb the water vapor in the air at the slag-gas interface. Meanwhile, the metal electrode above the slag pool is easily oxidized by high-temperature heat radiation and gas-phase oxygen supply, which causes the abnormal increase of the gas content of the steel grade. Therefore, it is necessary to perform gas protection during the smelting process, and thus the electroslag remelting double gas protection device is proposed to solve the problem. SUMMARY

[0003] Therefore, the utility model provides electroslag remelting double gas protection device, can through the first cover body's gas supply hole external connection argon supply equipment, the second cover body's gas inlet external connection dry air's supply equipment, and then in the process of electroslag remelting, control the supply speed of gas, cooperate and rotate the second cover body to make that the injection protection can realize horizontal, downward injection, and can adjust the gas injection of different positions according to the situation, to guarantee the injection effect, improve the hydrogen oxygen content in the electroslag ingot.

[0004] To solve the above technical problems, the utility model provides electroslag remelting double gas protection device, including first protection cover and setting in the first protection cover upper portion with rotation connection's second protection cover, the rotation structure is equipped between the first protection cover and the second protection cover, and the rotation structure includes the thrust bearing of embedding in the first protection cover upper portion, the annular convex of setting with the inner ring surface matching of thrust bearing is equipped in the second protection cover lower portion, the outer side base surface of annular convex is embedded with the sealing ring, and the outer side base surface of annular convex is equipped with the groove of installing sealing ring accordingly.

[0005] The first protection cover includes a first cover body, and the thrust bearing is embedded on the upper surface of the first cover body. The first cover body upper surface is provided with a mounting groove matched with the thrust bearing.

[0006] The first cover body is annularly arranged, and the outer side wall bottom thereof is symmetrically provided with mounting ears. The mounting ears are provided with fixing holes for convenient installation and fixation.

[0007] The first cover body is internally provided with a gas cavity, and a plurality of partition plates are arranged in the gas cavity. The outer side wall of the first cover body is respectively provided with gas supply holes, and the inner side wall of the first cover body is respectively provided with gas outlet holes.

[0008] The second protective cover comprises a second cover body, a corresponding annular protrusion fixedly arranged on the lower base surface of the second cover body, and a hollow interior of the second cover body corresponding to the first cover body, and a plurality of air blowing holes are arranged on the inner side wall of the second cover body, and air blowing nozzles with different angles are arranged in the air blowing holes, and an air inlet is arranged on the outer side base surface.

[0009] An annular end cover for reducing gas overflow is further arranged on the upper portion of the second cover body.

[0010] The beneficial effects of the above technical solutions of the utility model are as follows:

[0011] 1. The air supply hole of the first cover body is connected with an argon supply device, the air inlet of the second cover body is connected with a dry air supply device, and then the supply speed of the gas is controlled in the process of electroslag remelting, the second cover body is rotated to enable the air blowing protection to realize horizontal and downward air blowing, and the air blowing of the gas at different positions can be adjusted according to the situation to ensure the air blowing effect and improve the hydrogen and oxygen content in the electroslag ingot.

[0012] 2. The groove arranged on the outer side base surface of the annular protrusion is convenient for embedding a sealing ring, and then the sealing ring can be matched with the thrust bearing in use to reduce gas overflow and provide a good production environment for production personnel. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a main structure schematic view of the utility model electroslag remelting double-gas protection device;

[0014] Figure 2 It is a rotating structure schematic view of the utility model;

[0015] Figure 3 It is a bottom view of the utility model.

[0016] Mark explanation: 100, first protective cover; 101, first cover body; 102, mounting groove; 103, mounting lug; 104, fixed hole; 105, gas cavity; 106, partition plate; 107, air supply hole; 108, air outlet; 200, second protective cover; 210, second cover body; 220, air blowing hole; 230, air blowing nozzle; 240, air inlet; 250, annular end cover; 300, rotating structure; 310, thrust bearing; 320, annular protrusion; 321, sealing ring; 322, groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the following will combine the drawings of the utility model embodiment with the specific implementation process of the utility model embodiment. Figures 1-3The technical solutions of the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the range protected by the utility model.

[0018] As Figures 1-3 shown:

[0019] The embodiment provides the electric slag remelting double gas protection device, including first cover 100 and the second cover 200 being set on the upper portion of first cover 100 and being rotatably connected with it, and the rotatable structure 300 is arranged between the first cover 100 and the second cover 200, and the rotatable structure 300 includes the thrust bearing 310 embedded on the upper portion of the first cover 100, the annular protrusion 320 is arranged on the lower portion of the second cover 200 and is matched with the inner ring surface of the thrust bearing 310, the sealing ring 321 is embedded on the outer side base surface of the annular protrusion 320, and the slotted groove 322 for installing the sealing ring 321 is arranged on the outer side base surface of the annular protrusion 320.

[0020] In use, the gas supply hole 107 of the first cover body 101 is connected with the argon supply equipment, the gas inlet 240 of the second cover body 210 is connected with the dry air supply equipment, and then the supply speed of the gas is controlled during the electric slag remelting process, the second cover body 210 is rotated to enable the spray protection to realize horizontal and downward spray, and the gas spray at different positions can be adjusted according to the situation to ensure the spray effect and improve the hydrogen and oxygen content in the electric slag ingot

[0021] As Figure 2 shown, the first cover 100 includes the first cover body 101, the thrust bearing 310 is embedded on the upper base surface of the first cover body 101, and the mounting groove 102 matched with the thrust bearing 310 is formed in the upper base surface of the first cover body 101.

[0022] As Figure 1 shown, the first cover body 101 is arranged in a ring shape, and the mounting ears 103 are symmetrically arranged on the bottom of the outer side wall, and the fixing holes 104 for convenient installation and fixation are arranged on the mounting ears 103, so that the first cover body 101 is conveniently installed and fixed.

[0023] As Figure 1 , 3 shown, the first cover body 101 is arranged in a ring shape, and the mounting ears 103 are symmetrically arranged on the bottom of the outer side wall, and the fixing holes 104 for convenient installation and fixation are arranged on the mounting ears 103, so that the first cover body 101 is conveniently installed and fixed.

[0024] As Figure 2As shown in the drawings, the second protective cover 200 comprises a second cover body 210, a corresponding annular protrusion 320 is fixedly arranged on the lower base surface of the second cover body 210, the inside of the second cover body 210 is hollowly arranged, the shape of the second cover body 210 corresponds to the first cover body 101, a corresponding inner side wall of the second cover body 210 is provided with a plurality of air blowing holes 220, the air blowing holes 220 are provided with air blowing nozzles 230 with different angles, and the outer side base surface of the air blowing nozzles 230 is provided with air inlets 240.

[0025] As shown in the drawings, Figure 1 , 2 As shown in the drawings, the upper portion of the second cover body 210 is further provided with an annular end cover 250 for reducing gas overflow.

[0026] In addition, it should be further explained that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. Double gas protection device for electroslag remelting, characterized in that: The utility model provides a protective cover, including first protective cover (100) and second protective cover (200) are set on the upper portion of first protective cover (100) and are connected with rotation, are equipped with rotation structure (300) between first protective cover (100) and second protective cover (200) correspondingly, rotation structure (300) includes the thrust bearing (310) of embedding in the upper portion of first protective cover (100), and the annular protrusion (320) of setting with the inner ring surface matching of thrust bearing (310) is equipped with in the lower portion of second protective cover (200), and the outer side base surface of annular protrusion (320) is embedded with sealing ring (321), and the outer side base surface of annular protrusion (320) is equipped with the slot (322) of installing sealing ring (321) correspondingly.

2. The dual gas protection device for electroslag remelting according to claim 1, characterized in that: Wherein the first protective cover (100) includes first cover body (101), and the thrust bearing (310) is embedded in the upper base surface of first cover body (101) correspondingly, and the mounting groove (102) that corresponds with thrust bearing (310) is set up in the upper base surface of first cover body (101).

3. The dual gas protection device for electroslag remelting according to claim 2, characterized in that: The first cover body (101) is annularly arranged, and the mounting lug (103) is symmetrically arranged on the bottom of the outer side wall thereof, and the fixing hole (104) for facilitating installation and fixation is arranged on the mounting lug (103).

4. The dual gas protection device for electroslag remelting according to claim 3, characterized in that: The gas cavity (105) is formed in the first cover body (101), and a plurality of partition plates (106) are arranged in the gas cavity (105), and the gas supply hole (107) is respectively arranged on the outer side wall of the first cover body (101) correspondingly, and the gas outlet hole (108) is correspondingly arranged on the inner side wall of the first cover body (101).

5. The dual gas protection device for electroslag remelting according to claim 4, characterized in that: The second protective cover (200) includes the second cover body (210), and the annular protrusion (320) is fixedly arranged on the lower base surface of the second cover body (210) correspondingly, and the second cover body (210) is hollowly arranged, and the shape thereof corresponds to the first cover body (101), and a plurality of air blowing holes (220) are formed in the inner side wall of the second cover body (210) correspondingly, and the air blowing nozzle (230) with different angles is arranged in the air blowing hole (220), and the air inlet (240) is arranged on the outer side base surface of the air blowing nozzle (230).

6. The dual gas protection device for electroslag remelting according to claim 5, characterized in that: The annular end cover (250) for reducing gas overflow is further arranged on the upper portion of the second cover body (210).

Images