Electroslag furnace crystallizer fixing structure capable of adjusting protective atmosphere

Abstract

The utility model relates to the field of special metallurgy, and discloses a protective atmosphere adjustable electroslag furnace crystallizer fixing structure which is characterized in that the bottom of a furnace end is fixedly connected with the top end of a variable-diameter frame; a fixed frame is formed at the upper part of the variable-diameter frame, a replaceable frame is formed at the lower part of the variable-diameter frame, and the fixed frame and the replaceable frame are fixedly connected together through a replaceable connecting piece; the top face of the bearing table is fixedly connected to the bottom end of the replaceable frame and used for bearing and fixing the crystallizer. Based on an existing protective atmosphere electroslag furnace structure, the protective atmosphere electroslag furnace structure can be suitable for crystallizers of various sizes according to needs, production cost can be greatly reduced, installation is convenient and fast, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the field of special metallurgy, and particularly relates to a fixed structure of a mold for an adjustable protective atmosphere electroslag furnace. Background Art

[0002] A protective atmosphere electroslag furnace is a device for electroslag remelting under a protective atmosphere, mainly used for producing high-quality alloy steel, special steel and other materials.

[0003] The protective atmosphere electroslag furnace mainly consists of the following components:

[0004] 1. Furnace body: Usually a circular or square steel structure, lined with refractory materials inside, used to accommodate electrodes, molten slag and metal molten pool, etc.

[0005] 2. Electrode system: Includes electrode chuck, electrode guiding device and electrode lifting mechanism, etc. The electrode chuck is used to clamp the electrode, the electrode guiding device ensures the stable movement of the electrode during lifting, and the electrode lifting mechanism controls the lifting of the electrode according to the needs of the melting process.

[0006] 3. Power supply system: Provides the direct current required for electroslag remelting, and its current is relatively large, generally from several thousand amperes to tens of thousands of amperes.

[0007] 4. Protective atmosphere system: Consists of gas supply device, flow control device and gas purification device, etc., used to provide a protective atmosphere such as argon, nitrogen, etc. to the furnace.

[0008] 5. Mold system: Usually made of water-cooled copper plates, used to solidify and cool the metal melt to form the required ingot shape.

[0009] 6. Control system: Includes electrical control system, temperature control system and pressure control system, etc., used to control the whole process of electroslag remelting.

[0010] With the change of production requirements, the same protective atmosphere electroslag furnace will need different tonnage mold systems to work together, that is, other components are not replaced, but the furnace head of the protective atmosphere electroslag furnace needs to be able to adapt to a larger tonnage mold. If the whole protective atmosphere electroslag furnace or the furnace head is redesigned and manufactured, it will require a large amount of capital and time. Therefore, there is an urgent need for a furnace head structure of a protective atmosphere electroslag furnace that can be applied to a larger tonnage mold on the basis of the existing structure. Content of the Utility Model

[0011] A series of simplified concepts are introduced in the utility model content part. These simplified concepts are simplified from the existing technologies in the field, which will be further described in detail in the specific implementation part. The utility model content part of the present utility model does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0012] The technical problem to be solved by the present utility model is to provide an adjustable protective atmosphere electroslag furnace mold fixing structure that can be applicable to molds of various sizes (tonnages) according to needs based on the existing protective atmosphere electroslag furnace structure.

[0013] To solve the above technical problem, the adjustable protective atmosphere electroslag furnace mold fixing structure provided by the present utility model includes:

[0014] The furnace head 1, the top end of which is fixedly connected to the bottom of the variable-diameter frame;

[0015] The variable-diameter frame, the upper part of which is formed as a fixed frame 2.1, and the lower part of which is formed as a replaceable frame 2.2. The fixed frame 2.1 and the replaceable frame 2.2 are fixedly connected together through replaceable connectors;

[0016] The bearing platform 3, the top surface of which is fixedly connected to the bottom end of the replaceable frame 2.2, and which is used to bear the fixed mold 4.

[0017] Preferably, further improving the adjustable protective atmosphere electroslag furnace mold fixing structure, the fixed frame 2.1 is surrounded by at least three connecting rods with the same structure.

[0018] Preferably, further improving the adjustable protective atmosphere electroslag furnace mold fixing structure, the replaceable frame 2.2 is surrounded by at least three connecting rods with the same structure, and the number of connecting rods is the same as that of the connecting rods of the fixed frame 2.1;

[0019] The bottom ends of the connecting rods of the replaceable frame 2.2 are evenly and fixedly connected to the edge of the bearing platform 3.

[0020] Preferably, further improving the adjustable protective atmosphere electroslag furnace mold fixing structure, the replaceable connector includes: a first vertical section 2.3.1, a horizontal section 2.3.2 and a second vertical section;

[0021] The first vertical section 2.3.1 can be inserted and fixed in the first sub-connector 2.3.3, and the second vertical section can be inserted and fixed in the second sub-connector 2.3.4;

[0022] The first sub-connector 2.3.3 is formed at the bottom end of each connecting rod of the fixed frame 2.1;

[0023] The second sub-connector 2.3.4 is formed at the top end of each connecting rod of the replaceable frame 2.2.

[0024] Preferably, further improve the fixed structure of the adjustable protective atmosphere electroslag furnace mold. The first sub-connector 2.3.3 and the connecting rod of the fixed frame 2.1 are fixed by welding, and the second sub-connector 2.3.4 and the connecting rod of the replaceable frame 2.2 are fixed by welding.

[0025] Preferably, further improve the fixed structure of the adjustable protective atmosphere electroslag furnace mold. The first sub-connector 2.3.3 and each connecting rod of the fixed frame 2.1 are fixed by bolts or pins;

[0026] The second sub-connector 2.3.4 and each connecting rod of the replaceable frame 2.2 are fixed by bolts or pins.

[0027] Preferably, further improve the fixed structure of the adjustable protective atmosphere electroslag furnace mold. The bottom of the mold 4 is fixed in the fixing hole of the bearing table 3 by bolts.

[0028] The working principle and technical effects of the present utility model are as follows;

[0029] The lower part of the variable diameter frame of the present utility model is designed as a replaceable frame. When a large-tonnage mold is needed, the small-tonnage mold and the small-sized replaceable frame are replaced. The large-tonnage mold is installed and fixed in the large-sized replaceable frame, and then the replaceable connector is replaced to connect and fix the replaceable frame and the fixed frame. It should be noted that the shapes and structures of the vertical connecting sections of the replaceable connectors of various sizes can be the same, and by changing the length of the horizontal section, the fixed frame can be adapted to variable diameter frames of various sizes.

[0030] The furnace head and the fixed frame of the present utility model do not need to change with the tonnage (size) of the mold. Only by replacing the variable diameter frame and the replaceable connector can the existing protective atmosphere electroslag furnace be applicable to larger-tonnage (size) molds. Correspondingly, when a small-tonnage (size) mold is needed, only the variable diameter frame and the replaceable connector need to be replaced. Therefore, the present utility model can greatly reduce the production cost. At the same time, since fewer components are replaced, the installation is convenient and the operation is simple. Brief Description of the Drawings

[0031] The attached drawings of the present utility model are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the present utility model, supplementing the descriptions in the specification. However, the attached drawings of the present utility model are schematic diagrams not drawn to scale and may not accurately reflect the precise structures or performance characteristics of any given embodiment. The attached drawings of the present utility model should not be construed as limiting or restricting the scope of the numerical values or properties covered by the exemplary embodiments according to the present utility model. The present utility model will be further described in detail below in conjunction with the attached drawings and specific embodiments.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0033] Figure 2 It is a schematic diagram of the partial structure decomposition of the present utility model.

[0034] Explanation of reference numerals:

[0035] Burner head 1

[0036] Fixed frame 2.1

[0037] Replaceable frame 2.2

[0038] First vertical section 2.3.1

[0039] Horizontal section 2.3.2

[0040] First sub-connector 2.3.3

[0041] Second sub-connector 2.3.4

[0042] Carrying platform 3

[0043] Crystallizer 4. Specific embodiments

[0044] The following describes the implementation manners of the present utility model through specific embodiments. Those skilled in the art can fully understand other advantages and technical effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation manners. The details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without departing from the general design concept of the utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present utility model can be implemented in many different forms and should not be construed as being limited only to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model complete and thorough, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or there can be an intermediate element. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference numerals always represent the same elements.

[0045] The first embodiment;

[0046] Reference Figure 1 Combined with Figure 2 As shown, the present utility model provides an adjustable protective atmosphere electroslag furnace mold fixing structure, including:

[0047] The furnace head 1, the top end of which is fixedly connected to the top end of the variable-diameter frame, and the structure of the furnace head 1 can be any one of the existing technologies;

[0048] The variable-diameter frame, the upper part of which is formed as a fixed frame 2.1, and the lower part of which is formed as a replaceable frame 2.2. The fixed frame 2.1 and the replaceable frame 2.2 are fixedly connected together through replaceable connectors;

[0049] The bearing platform 3, the top surface of which is fixedly connected to the bottom end of the replaceable frame 2.2, and which is used to bear the fixed mold 4.

[0050] Optionally, the fixed frame 2.1 is surrounded by at least three connecting rods with the same structure. The replaceable frame 2.2 is surrounded by at least three connecting rods with the same structure, and the number of connecting rods is the same as that of the connecting rods of the fixed frame 2.1; the bottom ends of the connecting rods of the replaceable frame 2.2 are evenly fixedly connected to the edge of the bearing platform 3. In this embodiment, the fixed frame 2.1 is surrounded by four connecting rods.

[0051] In addition, it should also be understood that although terms such as "first", "second", etc. may be used herein to describe different elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the teachings of the exemplary embodiments of the present utility model, the first element, component, region, layer, or part discussed below may also be referred to as the second element, component, region, layer, or part.

[0052] Second Embodiment;

[0053] Reference Figure 2 As shown, the present utility model provides a preferred embodiment of a replaceable connector that can be used in the above-mentioned first embodiment, including: a first vertical section 2.3.1, a horizontal section 2.3.2, and a second vertical section (shown in the inserted state, not shown in the figure);

[0054] The first vertical section 2.3.1 can be inserted and fixed in the first sub-connector 2.3.3, and the second vertical section can be inserted and fixed in the second sub-connector 2.3.4. For example, after being inserted with a bolt or a pin, it is fixed;

[0055] The first sub-connector 2.3.3 is formed at the bottom end of each connecting rod of the fixed frame 2.1;

[0056] The second sub-connector 2.3.4 is formed at the top end of each connecting rod of the replaceable frame 2.2.

[0057] The first sub-connector 2.3.3 and the connecting rod of the fixed frame 2.1 are welded and fixed, and the second sub-connector 2.3.4 and the connecting rod of the replaceable frame 2.2 are welded and fixed.

[0058] The bottom of the mold 4 in the above-mentioned first embodiment or second embodiment is fixed in the fixing hole of the bearing table 3 by bolts.

[0059] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present utility model belongs. It will also be understood that terms such as those defined in a general dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and should not be interpreted in an ideal or overly formal sense, unless clearly defined herein.

[0060] The above has described the present utility model in detail through specific implementation manners and embodiments, but these do not constitute a limitation to the present utility model. Without departing from the principle of the present utility model, those skilled in the art can also make many deformations and improvements, which should also be regarded as the protection scope of the present utility model.

Claims

1. An adjustable protective atmosphere electroslag furnace mold fixing structure, characterized in that, Comprising: A burner head (1), the bottom of which is fixedly connected to the top end of a variable-diameter frame; A variable-diameter frame, the upper part of which is formed as a fixed frame (2.1), and the lower part of which is formed as a replaceable frame (2.2). The fixed frame (2.1) and the replaceable frame (2.2) are fixedly connected together by replaceable connecting members; A bearing platform (3), the top surface of which is fixedly connected to the bottom end of the replaceable frame (2.2), and which is used for bearing a fixed mold (4).

2. The fixed structure of the crystallizer of an adjustable protective atmosphere electroslag furnace according to claim 1, characterized in that: The fixed frame (2.1) is surrounded by at least three connecting rods with the same structure.

3. The fixed structure of the crystallizer of an adjustable protective atmosphere electroslag furnace according to claim 2, characterized in that: The replaceable frame (2.2) is surrounded by at least three connecting rods with the same structure, and the number of connecting rods is the same as that of the connecting rods of the fixed frame (2.1); The bottom ends of the connecting rods of the replaceable frame (2.2) are uniformly fixedly connected to the edge of the bearing platform (3).

4. The fixed structure of the crystallizer of the adjustable protective atmosphere electroslag furnace according to claim 3, characterized in that, The replaceable connecting member includes: a first vertical section (2.3.1), a horizontal section (2.3.2) and a second vertical section; The first vertical section (2.3.1) can be inserted and fixed in the first sub-connecting member (2.3.3), and the second vertical section can be inserted and fixed in the second sub-connecting member (2.3.4); The first sub-connecting member (2.3.3), which is formed at the bottom end of each connecting rod of the fixed frame (2.1); The second sub-connecting member (2.3.4), which is formed at the top end of each connecting rod of the replaceable frame (2.2).

5. The fixed structure of the crystallizer of the adjustable protective atmosphere electroslag furnace according to claim 4, characterized in that: The first sub-connecting member (2.3.3) and the connecting rods of the fixed frame (2.1) are welded and fixed, and the second sub-connecting member (2.3.4) and the connecting rods of the replaceable frame (2.2) are welded and fixed.

6. The fixed structure of the crystallizer of the adjustable protective atmosphere electroslag furnace according to claim 4, characterized in that: The first sub-connecting member (2.3.3) and each connecting rod of the fixed frame (2.1) are fixed by bolts or pins; The second sub-connecting member (2.3.4) and each connecting rod of the replaceable frame (2.2) are fixed by bolts or pins.

7. The fixed structure of the crystallizer of the adjustable protective atmosphere electroslag furnace according to any one of claims 1-6, characterized in that: The bottom of the mold (4) is fixed in the fixing holes of the bearing platform (3) by bolts.

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