Forging furnace and furnace door thereof
By designing a forging furnace door with outer plates, support rods and layered fiber structures, the problem of low maintenance efficiency of existing forging furnace doors is solved, and more efficient maintenance and longer service life is achieved. .
Patent Information
- Application Number
- CN202420478072.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The existing forging furnace doors have low maintenance efficiency, poor overall strength of the fiber module structure and cumbersome maintenance process, and the castable integral molding structure is heavy overall, has poor sealing and high maintenance costs.
A forging furnace door is designed, adopting an outer plate, support rod and layered fiber structure. The support rod is vertically fixed to the outer plate, and the fiber structure is penetrated by the support rod and is pressed and fixed by a compression sleeve. . The layout of the layered structure is convenient for replacing the damaged fiber structure on the outside, without the need to replace the furnace door or welding anchors as a whole.
It improves the maintenance efficiency of forged furnace doors, facilitates replacement of damaged fiber structures, reduces maintenance costs and complexity, and improves the service life of the furnace doors.
Smart Images
Figure CN222528320U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forging furnaces, in particular to a forging furnace and a furnace door thereof. Background Art
[0002] Forging furnace is an important heating equipment for heating forging materials in forging workshops, which is used for firing and forming or heat treatment of products. In order to facilitate the entry and exit of goods, the forging furnace body is usually equipped with multiple furnace doors. The furnace door will crack after long-term high-temperature firing, and the furnace door needs to be frequently repaired.
[0003] However, the furnace doors of existing forging furnaces mostly adopt castable one-piece molding or fiber module structure. Among them, the furnace door with castable one-piece molding structure has good integrity and long service life, but it has many defects such as overall weight, poor sealing, high thermal conductivity, poor thermal insulation, etc., and once such furnace door has through seams or too many cracks, it can only be replaced as a whole, and the maintenance cost is high. The furnace door with fiber module structure has good airtightness, low fiber thermal conductivity and good thermal insulation, but the overall strength of such furnace door is poor. The fiber becomes brittle and powdered after long-term high-temperature calcination. After long-term high-temperature calcination, the edge of the furnace door will loosen and fall off. In order to prevent high temperature from burning through the outer steel plate, once the module falls off, it is necessary to remove the surrounding modules and cut off the original anchors. The anchor nails need to be re-welded to install the module. The maintenance process is cumbersome and will reduce maintenance efficiency. Utility Model Content
[0004] The utility model aims to provide a forging furnace and a furnace door thereof, which solves the technical problem of low maintenance efficiency of the forging furnace door.
[0005] To achieve the above-mentioned purpose, the utility model provides a furnace door of a forging furnace, including an outer plate, a plurality of support rods and a plurality of stacked fiber structures, all of the support rods are vertically fixed to the outer plate, and all of the fiber structures are passed through all of the support rods; each support rod sleeve is provided with a compression sleeve for compressing all of the fiber structures.
[0006] Preferably, a fixing plate is provided between any two adjacent layers of fiber structures, and the fixing plate is fixed to the support rod.
[0007] Preferably, each support rod comprises a metal rod fixed to the outer plate and a ceramic rod arranged at one end of the metal rod away from the outer plate, and the metal rod and the ceramic rod are coaxially connected via a connecting sleeve.
[0008] Preferably, one end of the connecting sleeve is threadedly connected to the metal rod, and the other end thereof is sleeve-connected to the ceramic rod, and a connecting pin is transversely provided at the connection between the connecting sleeve and the ceramic rod.
[0009] Preferably, a connecting thread is provided at one end of the ceramic rod away from the connecting sleeve, and the clamping sleeve is specifically a ceramic nut, which matches the connecting thread.
[0010] Preferably, the length of the metal rod is less than or equal to one quarter of the total thickness of the entire fiber structure; the combined length between the connecting sleeve and the connecting thread is greater than a set length; and the sum of the lengths of the metal rod and the connecting sleeve is less than or equal to one half of the sum of the thickness of the entire fiber structure.
[0011] Preferably, the fiber structure includes a first alumina fiber blanket, a second alumina fiber blanket, a third alumina fiber board, a first zirconium-containing fiber board, a second zirconium-containing fiber blanket, a third zirconium-containing fiber blanket, a ceramic fiber machine board, a first aluminum silicate fiber blanket and a second aluminum silicate fiber blanket, which are sequentially arranged in a direction close to the outer plate;
[0012] The thickness of the first alumina fiber blanket is half the thickness of the second alumina fiber blanket;
[0013] The thicknesses of the second alumina fiber blanket, the third alumina fiber plate, the first zirconium-containing fiber plate, the second zirconium-containing fiber blanket, the third zirconium-containing fiber blanket, the ceramic fiber machine plate, the first aluminum silicate fiber blanket and the second aluminum silicate fiber blanket are all equal.
[0014] Preferably, all fiber structures form a layered structure, and the outer surface of the layered structure is coated with a high temperature resistant layer.
[0015] Preferably, an outer surface of the layered structure is provided with expansion joints, and the expansion joints are used to divide the high temperature resistant layers at a set distance.
[0016] The utility model also provides a forging furnace, comprising the furnace door.
[0017] Compared with the background technology, the utility model optimizes the furnace door structure of the forging furnace. The furnace door adopts a layered structure, which is composed of several layers of fiber structures stacked together. All fiber structures are inserted into the support rod and pressed against the outer plate by a compression sleeve. When the outer fiber structure loses its strength due to long-term high temperature and falls off, it is only necessary to remove the compression sleeve and reinstall the new fiber structure on the support rod. The layered structure is convenient for replacing the damaged fiber structure on the outside, and there is no need to replace the furnace door as a whole or weld the anchors. The furnace door is easy to repair and has a high maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0019] Figure 1 A side view of a furnace door of a forging furnace provided by an embodiment of the utility model;
[0020] Figure 2 for Figure 1 A schematic cross-sectional view of the middle card fixing plate;
[0021] Figure 3 for Figure 1 Structural diagram of the middle support rod;
[0022] Figure 4 for Figure 1 Assembly drawing of the middle ceramic rod and compression sleeve;
[0023] Figure 5 for Figure 1 The laminated structure is wrapped with a high temperature resistant layer.
[0024] The reference numerals are as follows:
[0025] Outer plate 1, support rod 2, fiber structure 3, compression sleeve 4, clamping plate 5 and high temperature resistant layer 6;
[0026] Metal rod 21, ceramic rod 22, connecting sleeve 23 and connecting pin 24;
[0027] A first alumina fiber blanket 31, a second alumina fiber blanket 32, a third alumina fiber plate 33, a first zirconium-containing fiber plate 34, a second zirconium-containing fiber blanket 35, a third zirconium-containing fiber blanket 36, a ceramic fiber machine plate 37, a first aluminum silicate fiber blanket 38 and a second aluminum silicate fiber blanket 39;
[0028] Expansion joint 61. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0031] The utility model embodiment discloses a furnace door of a forging furnace, as shown in the attached Figure 1As shown, it includes an outer plate 1, a plurality of support rods 2 and a plurality of stacked fiber structures 3. Specifically, the outer plate 1 can be a metal steel plate, but its material is not limited thereto. All support rods 2 are vertically fixed to the outer plate 1, all support rods 2 are parallel, and the distance between any two adjacent support rods 2 can reach 500 mm, but the distance is not limited thereto, and can be adjusted according to the thickness and cross-sectional size of the fiber structure 3.
[0032] All fiber structures 3 are inserted through all support rods 2, so that all support rods 2 provide support for all fiber structures 3. In order to reliably fix the fiber structure 3, each support rod 2 is provided with a compression sleeve 4, which compresses all fiber structures 3 along the length direction of the support rod 2, so that all fiber structures 3 are compressed and fixed between the compression sleeve 4 and the outer plate 1.
[0033] The utility model optimizes the furnace door structure of the forging furnace. The furnace door adopts a layered structure, which is formed by stacking a plurality of fiber structures 3. All the fiber structures 3 are pressed on the outer plate 1 by a compression sleeve 4. When the outer fiber structure 3 loses its strength due to long-term high temperature and falls off, it is only necessary to remove the compression sleeve 4 and reinstall the new fiber structure 3 on the support rod 2. The layered structure is convenient for replacing the damaged fiber structure 3 on the outside, and there is no need to replace the furnace door as a whole or weld the anchors. The furnace door is convenient to repair and has a high maintenance efficiency.
[0034] A fixing plate 5 is arranged between any two adjacent layers of fiber structures 3, and the fixing plate 5 is fixed to the support rod 2, so that each layer of fiber structure 3 can be fixed independently, and each layer of fiber structure 3 will not affect each other when being disassembled. Figure 2 As shown, the center of the clamping plate 5 is provided with a central hole, and a plurality of radially distributed elastic clamping arms are provided around the hole of the central hole, and the elastic clamping arms elastically abut against the support rod 2, so that the clamping plate 5 is tightly fixed on the support rod 2, so that the clamping plate 5 limits the position of the fiber structure 3 along the axial direction of the support rod 2. The clamping plate 5 can be specifically 304 stainless steel, and of course, the structure and material of the clamping plate 5 are not limited thereto.
[0035] Considering that the temperature inside the forging furnace can reach 1300°C, which exceeds the melting point of metal, in order to prevent the high temperature in the furnace from affecting the service life of the support rod 2, each support rod 2 adopts a splicing structure, as shown in the attached Figure 3 and 4As shown, each support rod 2 includes a metal rod 21 and a ceramic rod 22, and the metal rod 21 is vertically fixed on the outer plate 1. The specifications of the metal rod 21 can be a 304 metal anchor nail of M10 x 100. Of course, the specifications and materials of the metal rod 21 are not limited thereto, and can be adjusted according to the type of furnace door and the thickness of the fiber structure 3. The ceramic rod 22 is arranged at the end of the metal rod 21 away from the outer plate 1. The ceramic rod 22 is more resistant to high temperatures. Compared with the metal rod 21, its service life is relatively less affected by the high temperature in the furnace, which is conducive to extending the service life of the support rod 2. The metal rod 21 and the ceramic rod 22 are coaxially connected through a connecting sleeve 23.
[0036] Considering that the metal rod 21 and the ceramic rod 22 are made of different materials, one end of the connecting sleeve 23 is threadedly connected to the metal rod 21, and the other end of the connecting sleeve 23 is sleeved and connected to the ceramic rod 22. A connecting pin 24 is provided across the connection between the connecting sleeve 23 and the ceramic rod 22 to connect the metal rod 21 and the ceramic rod 22. Of course, the connection method between the metal rod 21 and the ceramic rod 22 is not limited to this.
[0037] The end of the ceramic rod 22 away from the connecting sleeve 23 is provided with a connecting thread, and the clamping sleeve 4 is specifically a ceramic nut, which cooperates with the connecting thread, so that the clamping sleeve 4 can not only clamp the entire fiber structure 3, but also withstand the high temperature in the furnace. Of course, the material of the clamping sleeve 4 is not limited to this, and it can also be made of other high-temperature resistant materials. It should also be noted that the clamping sleeve 4 is not a closed annular structure, but is provided with a notch to provide space for the thermal expansion and contraction of the clamping sleeve 4, so as to prevent the clamping sleeve 4 from being affected by the high temperature in the furnace and getting stuck on the ceramic rod 22, and facilitate the disassembly and assembly of the clamping sleeve 4.
[0038] The length of the metal rod 21 is less than or equal to one quarter of the total thickness of the entire fiber structure 3, which reduces the impact of the high temperature in the furnace on the metal rod 21. The combined length between the connecting sleeve 23 and the connecting thread is greater than the set length, which is 10 mm, to ensure that the connecting sleeve 23 is reliably connected to the metal rod 21. The sum of the lengths of the metal rod 21 and the connecting sleeve 23 is less than or equal to one half of the total thickness of the entire fiber structure 3, which is also conducive to reducing the impact of the high temperature in the furnace on the metal rod 21.
[0039] The fiber structures 3 are all made of different types of thermal insulation materials. Figure 1As shown, the fiber structure 3 includes a first alumina fiber blanket 31, a second alumina fiber blanket 32, a third alumina fiber plate 33, a first zirconium-containing fiber plate 34, a second zirconium-containing fiber blanket 35, a third zirconium-containing fiber blanket 36, a ceramic fiber machine plate 37, a first aluminum silicate fiber blanket 38 and a second aluminum silicate fiber blanket 39, which are sequentially arranged in a direction close to the outer plate 1. Of course, the material of the fiber structure 3 is not limited thereto. The thickness of the first alumina fiber blanket 31 is half of the thickness of the second alumina fiber blanket 32. The thickness of the second alumina fiber blanket 32, the third alumina fiber plate 33, the first zirconium-containing fiber plate 34, the second zirconium-containing fiber blanket 35, the third zirconium-containing fiber blanket 36, the ceramic fiber machine plate 37, the first aluminum silicate fiber blanket 38 and the second aluminum silicate fiber blanket 39 are all equal.
[0040] Specifically, the thickness of the first alumina fiber blanket 31 is 25 mm, and the thickness of the second alumina fiber blanket 32, the third alumina fiber board 33, the first zirconium-containing fiber board 34, the second zirconium-containing fiber blanket 35, the third zirconium-containing fiber blanket 36, the ceramic fiber machine board 37, the first aluminum silicate fiber blanket 38, and the second aluminum silicate fiber blanket 39 are all 50 mm. However, the thickness of each fiber structure 3 is not limited thereto and can be adjusted according to the use scenario of the furnace door.
[0041] The entire fiber structure 3 forms a layered structure, and the outer surface of the layered structure is coated with a high temperature resistant layer 6. Figure 5 As shown, the furnace door as a whole has good high temperature resistance. The thickness of the high temperature resistant layer 6 can reach 10mm, and it is made of high temperature heat protection coating that is dried at 100℃ for 24h. An expansion joint 61 is provided on the outer surface of the layered structure. The expansion joint 61 is used to divide the high temperature resistant layer 6 according to a set distance to provide space for the thermal expansion and contraction of the high temperature resistant layer 6. The set distance can be specifically 1mm, and the width of each expansion joint 61 ranges from 5 to 8mm.
[0042] The difference between the length of the metal rod 21 and the thickness of the layered structure is within a set range, specifically 30 to 50 mm. A certain length is reserved for the metal rod 21 to be damaged by the high temperature in the furnace, to avoid frequent cutting or welding of the metal rod 21 due to the metal rod 21 being too short, and to facilitate maintenance.
[0043] The embodiment of the utility model also discloses a forging furnace, comprising the above-mentioned furnace door, which has the same beneficial effects.
[0044] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0045] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A furnace door of a forging furnace, characterized in that: The invention comprises an outer plate (1), a plurality of support rods (2) and a plurality of stacked fiber structures (3), wherein all the support rods (2) are vertically fixed to the outer plate (1), and all the fiber structures (3) are passed through all the support rods (2); each of the support rods (2) is provided with a compression sleeve (4) for compressing all the fiber structures (3).
2. The furnace door of the forging furnace according to claim 1, characterized in that: A fixing plate (5) is provided between any two adjacent layers of the fiber structure (3), and the fixing plate (5) is fixed to the support rod (2).
3. The furnace door of the forging furnace according to claim 1, characterized in that: Each of the support rods (2) comprises a metal rod (21) fixed to the outer plate (1) and a ceramic rod (22) arranged at one end of the metal rod (21) away from the outer plate (1); the metal rod (21) and the ceramic rod (22) are coaxially connected via a connecting sleeve (23).
4. The furnace door of the forging furnace according to claim 3, characterized in that: One end of the connecting sleeve (23) is threadedly connected to the metal rod (21), and the other end is sleeve-connected to the ceramic rod (22). A connecting pin (24) is provided transversely at the connection between the connecting sleeve (23) and the ceramic rod (22).
5. The furnace door of the forging furnace according to claim 4, characterized in that: One end of the ceramic rod (22) away from the connecting sleeve (23) is provided with a connecting thread, and the pressing sleeve (4) is specifically a ceramic nut, and the ceramic nut cooperates with the connecting thread.
6. The furnace door of the forging furnace according to claim 5, characterized in that: The length of the metal rod (21) is less than or equal to one quarter of the total thickness of the entire fiber structure (3); the combined length between the connecting sleeve (23) and the connecting thread is greater than a set length; and the sum of the lengths of the metal rod (21) and the connecting sleeve (23) is less than or equal to one half of the total thickness of the entire fiber structure (3).
7. The furnace door of a forging furnace according to any one of claims 1 to 6, characterized in that: The fiber structure (3) comprises a first alumina fiber blanket (31), a second alumina fiber blanket (32), a third alumina fiber board (33), a first zirconium-containing fiber board (34), a second zirconium-containing fiber blanket (35), a third zirconium-containing fiber blanket (36), a ceramic fiber machine-made board (37), a first aluminum silicate fiber blanket (38) and a second aluminum silicate fiber blanket (39) which are sequentially arranged in a direction close to the outer layer board (1); The thickness of the first alumina fiber blanket (31) is half the thickness of the second alumina fiber blanket (32); The thicknesses of the second alumina fiber blanket (32), the third alumina fiber plate (33), the first zirconium-containing fiber plate (34), the second zirconium-containing fiber blanket (35), the third zirconium-containing fiber blanket (36), the ceramic fiber machine plate (37), the first aluminum silicate fiber blanket (38) and the second aluminum silicate fiber blanket (39) are all equal.
8. The furnace door of a forging furnace according to any one of claims 1 to 6, characterized in that: All of the fiber structures (3) form a layered structure, and the outer surface of the layered structure is coated with a high temperature resistant layer (6).
9. The furnace door of the forging furnace according to claim 8, characterized in that: An expansion joint (61) is provided on the outer surface of the layered structure, and the expansion joint (61) is used to divide the high temperature resistant layer (6) at a set distance.
10. A forging furnace, characterized in that: The invention comprises the furnace door according to any one of claims 1 to 9.