CN218969331U

CN218969331U - Electroslag remelting device

Info

Publication number: CN218969331U
Application number: CN202222505969.7U
Authority: CN
Inventors: 霍振全
Original assignee: Xingtai Delong Machinery & Mill Roll Co ltd
Current assignee: Xingtai Delong Machinery & Mill Roll Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-05-05
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to an electroslag remelting device which comprises a device body and a false electrode, wherein one end of the false electrode is connected with the device body, the other end of the false electrode is provided with a consumable assembly, and a transition plate is welded between the consumable assembly and the false electrode; the self-consumption assembly comprises four self-consumption electrodes which are arranged in parallel, the central connecting line of the four self-consumption electrodes is square, and the four self-consumption electrodes are closely attached. According to the electroslag remelting device, the four consumable electrodes which are arranged in parallel are arranged, so that the shape distribution of a metal molten pool is improved on the premise that the diameter filling ratio of the consumable electrodes is not changed, the depth of the central position of the metal molten pool is shallower, and further the segregation of an ingot is smaller and the internal structure is denser.

Description

Electroslag remelting device

Technical Field

The utility model relates to the technical field of electrothermal alloy production, in particular to an electroslag remelting device.

Background

Electroslag remelting is to re-melt a static cast consumable electrode by utilizing heat generated by current passing through slag, purify and slag wash molten metal droplets, and achieve the effect of improving metal purity, wherein the consumable electrode is generally formed by casting. The electroslag melting of the consumable electrode requires the use of an auxiliary, one end of the auxiliary is connected with the consumable electrode, and the other end of the auxiliary is connected with the electroslag device, so that high-current communication is realized, and the consumable electrode is ensured to be melted. This auxiliary is called a dummy electrode.

However, in the process of electroslag remelting, structural defects of the electroslag remelting equipment are limited, so that the central position of a metal molten pool is deep, and the finally formed cast ingot is easy to segregate and is not compact in internal structure, and the performance of the cast ingot is affected.

Disclosure of Invention

In view of this, the present utility model aims to propose an electroslag remelting device that facilitates improving the shape distribution of the molten metal bath.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

an electroslag remelting device comprises a device body and a dummy electrode, wherein one end of the dummy electrode is connected with the device body, a consumable assembly is arranged at the other end of the dummy electrode, and a transition plate is welded between the consumable assembly and the dummy electrode; the other side of the transition plate is welded with a consumable component relative to one side welded with the dummy electrode; the consumable assembly comprises four of the consumable electrodes arranged in parallel; the center connecting lines of the four consumable electrodes are square, and the four consumable electrodes are tightly attached.

Further, the transition plate is in a circular ring shape; and the inner ring and the outer ring of the transition plate are welded and connected with the consumable electrodes.

Further, the diameter D1 of the consumable electrode is between 250 and 300 mm; the diameter D2 of the inner ring of the transition plate is 200mm, and the diameter D3 of the outer ring is 450mm; the diameter D4 of the false electrode is 300-400 mm.

Furthermore, the false electrode is made of austenitic stainless steel.

Further, the transition plate is a hot rolled steel plate; the thickness H1 of the transition plate is 20mm.

Further, the hoisting assembly is detachably arranged on the consumable assembly and used for hoisting the consumable assembly; a plurality of the hoist assemblies are spaced apart along the axis of the consumable electrode.

Further, the hoisting assembly comprises two first clamping pieces and a second clamping piece, wherein the two first clamping pieces are axially arranged at intervals along the consumable electrode, and the second clamping piece is arranged between the two first clamping pieces; the first clamping piece is provided with a first accommodating groove for accommodating two adjacent consumable electrodes, and the second clamping piece is provided with a second accommodating groove for accommodating the other two consumable electrodes; the first clamping piece is connected with the second clamping piece through a connecting piece, and the consumable assembly is clamped between the first accommodating groove and the second accommodating groove due to the connection of the first clamping piece and the second clamping piece.

Further, the hoisting assembly further comprises a third clamping piece, wherein the third clamping piece stretches into the space between the consumable electrode positioned in the first accommodating groove and the consumable electrode positioned in the second accommodating groove and is matched with the first accommodating groove and the second accommodating groove respectively to clamp the four consumable electrodes; the third clamping piece is connected with the first clamping piece and the second clamping piece through the connecting piece.

Compared with the prior art, the utility model has the following advantages:

according to the electroslag remelting device, the four consumable electrodes are arranged in parallel, so that the shape distribution of a metal molten pool is improved on the premise of not changing the filling ratio of the diameters of the consumable electrodes, the depth of the central position of the metal molten pool is shallower, and further the segregation of an ingot is smaller and the internal structure is denser.

In addition, the transition plate is in a circular ring shape, and the inner ring and the outer ring of the transition plate are connected with the respective power consumption electrodes, so that the connection strength between the transition plate and the consumable assembly is improved.

In addition, the false electrode is made of austenitic stainless steel, so that vortex generated by the false electrode in the electroslag remelting process can be avoided, and the safety of the electroslag remelting process is prevented from being influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a link structure of a dummy electrode, a transition plate, and a consumable assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a transition plate and a consumable assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a structure of a consumable assembly and a lifting assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of the hoisting assembly according to the embodiment of the utility model when clamping the consumable assembly.

Reference numerals illustrate:

1. a dummy electrode; 2. a transition plate; 3. a consumable electrode; 4. a first clamping piece; 401. a first accommodation groove; 402. lifting lugs; 5. a second clamping piece; 501. a second accommodation groove; 6. a third clamping piece; 7. a connecting piece; 8. and a through hole.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, the terms "mounted," "connected," and "connecting" are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to an electroslag remelting device, which comprises a device body and a false electrode 1, wherein one end of the false electrode 1 is connected with the device body, a consumable assembly is arranged at the other end of the false electrode 1, and a transition plate 2 is welded between the consumable assembly and the false electrode 1. The consumable assembly comprises four consumable electrodes 3 which are arranged in parallel, the central connecting line of the four consumable electrodes 3 is square, and the four consumable electrodes 3 are tightly attached.

The working principle of the electroslag remelting device is described as follows: the electroslag remelting device generally comprises a bottom water tank and a crystallizer arranged on the bottom water tank; when in operation, molten alkaline slag is injected into the crystallizer to form a slag pool, one end of the consumable electrode 3 is connected with the dummy electrode 1, and the other end is inserted into the slag pool; the false electrode 1, the consumable electrode 3, the slag bath, the metal molten pool, the cast ingot and the bottom water tank form a loop through a short-net cable and a transformer.

The slag bath is heated to a high temperature by the self resistance, the end of the consumable electrode 3 is heated and melted by slag to form metal droplets, then the metal droplets fall off and enter the metal bath through the slag bath, the liquid metal rapidly solidifies to form a spindle due to the forced cooling effect of the water-cooled crystallizer, the cast ingot is sequentially solidified from bottom to top, the metal bath and the slag bath are enabled to continuously move upwards, and the bottom water tank below has a refrigerating effect due to the heat source at the upper end of the cast ingot, so that the cast ingot is enabled to crystallize from bottom to top. The working principle of the electroslag remelting device can also refer to the prior art, and the brief description is only used for facilitating understanding of the scheme.

Based on the above overall description, as a preferred embodiment, as shown in fig. 1, in this example, the dummy electrode 1, the transition plate 2, and the consumable electrode group are disposed in order, and between the dummy electrode 1 and the transition plate 2, and between the transition plate 2 and the consumable electrodeThe groups are all connected by welding, preferably using CO ₂ And (5) performing protective welding.

In addition, the dummy electrode 1 in the present embodiment is preferably made of austenitic stainless steel, so that it is able to avoid generating eddy currents in the dummy electrode 1 during the electroslag remelting process, thereby causing the dummy electrode 1 to generate heat and redness, and affecting the safety of the electroslag remelting process. And the dummy electrode 1 and the transition plate 2 are preferably welded and connected by adopting a multi-layer fillet welding mode.

As shown in fig. 2, in order to improve the connection strength between the transition plate 2 and the consumable assembly, as a preferred embodiment, the transition plate 2 in this embodiment is in a ring shape, and when connected to the consumable assembly, the inner ring and the outer ring of the transition plate 2 are welded to the respective consumable electrodes 3. Further, the transition plate 2 is preferably made of a hot rolled steel plate, and its thickness H1 is preferably 20mm.

As shown in fig. 1 and 2, the diameter D1 of the consumable electrode 3 in this embodiment is between 250 and 300mm, and may be 250mm, 270mm, 290mm, 300mm, etc. in practice. The inner ring diameter D2 of the transition plate 2 is preferably 200mm and the outer ring diameter D3 is preferably 450mm. And the diameter D4 of the dummy electrode 1 is preferably set between 300 and 400mm, which may be 300mm, 350mm, 380mm, 400mm, etc., in particular.

In addition, in order to facilitate the preparation work before electroslag remelting, such as carrying the consumable assembly, or realizing the conversion from horizontal placement to vertical placement of the consumable assembly, so as to facilitate the subsequent welding work, the electroslag remelting device of the embodiment further comprises a hoisting assembly detachably arranged on the consumable assembly and used for hoisting the consumable assembly. As shown in fig. 1, in the present embodiment, two hanging members are arranged at intervals in the axial direction of the consumable electrode 3. Of course, two lifting assemblies are merely a preferred embodiment, and in practice, the lifting assemblies may be a plurality, such as 4, 5, 6, etc., spaced apart along the axial direction of the consumable electrode 3.

As shown in fig. 3 and 4, the hoisting assembly comprises two first clamping members 4 arranged at intervals in the axial direction of the consumable electrode 3, and a second clamping member 5 arranged between the two first clamping members 4. The first clamping member 4 has a first accommodating groove 401 for accommodating two adjacent consumable electrodes 3, and the second clamping member 5 has a second accommodating groove 501 for accommodating two other consumable electrodes 3. The first clamping piece 4 and the second clamping piece 5 are connected through the connecting piece 7, and the consumable assembly is clamped between the first accommodating groove 401 and the second accommodating groove 501 due to the connection of the first clamping piece 4 and the second clamping piece 5.

As shown in fig. 4, the first receiving groove 401 is M-shaped to adapt to the shape of two adjacent consumable electrodes 3, and the second receiving groove 501 is W-shaped to adapt to the shape of two other adjacent consumable electrodes 3, and the connecting member 7 may be bolts commonly used in the prior art, and through holes 8 through which the bolts pass are provided on the first clamping member 4 and the second clamping member 5, so that the consumable assembly can be clamped between the first receiving groove 401 and the second receiving groove 501 when the first clamping member 4 is connected to the second clamping member 5 by the connecting member 7. In addition, a lifting lug 402 is formed on the first clamping member 4, so as to facilitate lifting of the consumable assembly.

As shown in fig. 3 and 4, the hoisting assembly of the present embodiment further includes a third clamping member 6, where the third clamping member 6 extends between the consumable electrode 3 located in the first accommodating groove 401 and the consumable electrode 3 located in the second accommodating groove 501, and cooperates with the first accommodating groove 401 and the second accommodating groove 501 to complete clamping of the four consumable electrodes 3. In specific implementation, the third clamping piece 6 is arranged in a dislocation manner with the first clamping piece 4 and the second clamping piece 5 along the axial direction of the consumable electrode 3, and the part of the third clamping piece 6 extending between the two consumable electrodes 3 is in an arc shape matched with the consumable electrodes 3 on two sides. And the third clamping piece 6 is also provided with a through hole 8 for the connecting piece 7 to pass through, so that when the first clamping piece 4, the second clamping piece 5 and the third clamping piece 6 are connected through the connecting piece 7, the four consumable electrodes 3 can be respectively clamped between the two third clamping pieces 6 and the first clamping piece 4 and the second clamping piece 5.

When the electroslag remelting device of this embodiment is in use, the clamping of consumable subassembly is accomplished through hoisting subassembly earlier, later accessible hoisting subassembly is transported consumable subassembly to the position that carries out the welding, because consumable subassembly is in the state that the level was placed in the initial time probably, also accessible hoisting subassembly realizes that consumable subassembly is placed by the level and is shifted to vertical placing to make consumable subassembly carry out subsequent welding work under the state that vertically was placed, be favorable to the promotion of welding efficiency in the time of more convenient and safe.

After the consumable assembly is transferred to the welding position, the welding between the transition plate 2 and each consumable electrode 3 and the welding between the dummy electrode 1 and the transition plate 2 can be performed, and after the welding is completed, the welding position can be baked by using natural gas or gas, so that the welding effect is improved. And before electroslag remelting, one end of the consumable assembly, which is far away from the false electrode 1, is inserted into a slag pool, and the hoisting assembly is taken down from the consumable assembly, so that electroslag remelting can be performed.

According to the electroslag remelting device, the four consumable electrodes 3 are arranged in parallel, so that the shape distribution of a metal molten pool is improved on the premise that the filling ratio of the diameters of the consumable electrodes 3 is not changed, the depth of the central position of the metal molten pool is shallower, and further the segregation of an ingot is smaller and the internal structure is denser.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides an electroslag remelting device, includes the device body to and false electrode (1) that one end and device body are connected, its characterized in that:

a consumable component is arranged at the other end of the dummy electrode (1), and a transition plate (2) is welded between the consumable component and the dummy electrode (1);

the consumable assembly comprises four consumable electrodes (3) arranged in parallel; the central connecting lines of the four consumable electrodes (3) are square, and the four consumable electrodes (3) are tightly attached.

2. The electroslag remelting apparatus of claim 1, wherein:

the transition plate (2) is in a circular ring shape;

the inner ring and the outer ring of the transition plate (2) are welded with the consumable electrodes (3).

3. The electroslag remelting apparatus of claim 2, wherein:

the diameter D1 of the consumable electrode (3) is between 250 and 300 mm;

the diameter D2 of the inner ring of the transition plate (2) is 200mm, and the diameter D3 of the outer ring is 450mm;

the diameter D4 of the dummy electrode (1) is 300-400 mm.

4. The electroslag remelting apparatus of claim 1, wherein:

the false electrode (1) is made of austenitic stainless steel.

5. The electroslag remelting apparatus of claim 1, wherein:

the transition plate (2) is a hot rolled steel plate;

the thickness H1 of the transition plate (2) is 20mm.

6. The electroslag remelting apparatus according to any one of claims 1 to 5, further comprising:

the hoisting assembly is detachably arranged on the consumable assembly and used for hoisting the consumable assembly;

a plurality of the hoisting assemblies are arranged at intervals along the axial direction of the consumable electrode (3).

7. The electroslag remelting apparatus of claim 6, wherein:

the hoisting assembly comprises two first clamping pieces (4) and second clamping pieces (5), wherein the two first clamping pieces (4) are axially arranged at intervals along the consumable electrode (3), and the second clamping pieces (5) are arranged between the two first clamping pieces (4);

the first clamping piece (4) is provided with a first accommodating groove (401) for accommodating two adjacent consumable electrodes (3), and the second clamping piece (5) is provided with a second accommodating groove (501) for accommodating the other two consumable electrodes (3);

the first clamping piece (4) is connected with the second clamping piece (5) through a connecting piece (7), and the consumable assembly is clamped between the first accommodating groove (401) and the second accommodating groove (501) due to the connection of the first clamping piece (4) and the second clamping piece (5).

8. The electroslag remelting apparatus of claim 7, wherein:

the hoisting assembly further comprises a third clamping piece (6), wherein the third clamping piece (6) stretches into a space between the consumable electrode (3) in the first accommodating groove (401) and the consumable electrode (3) in the second accommodating groove (501), and is matched with the first accommodating groove (401) and the second accommodating groove (501) respectively to clamp the four consumable electrodes (3);

the third clamping piece (6) is connected with the first clamping piece (4) and the second clamping piece (5) through the connecting piece (7).