Resistance furnace for uniform heating and uniform nitriding of vanadium-nitrogen alloy

Abstract

The resistance furnace comprises a base, a furnace body is fixedly installed on the upper end face of the base, two connecting plates are fixedly installed on the inner wall of the base, a sliding block is slidably installed between the two connecting plates through a sliding mechanism, and a toothed plate is fixedly installed on the bottom wall of the sliding block. A rotating shaft is rotationally installed in the base, a transmission motor connected with the rotating shaft is fixedly installed on the outer wall of the base, and the outer wall of the rotating shaft is connected with the toothed plate through a rotating mechanism. The hydraulic rod, the stirring shaft, the stirring blades and other assemblies are arranged, the hydraulic rod accurately controls the stirring shaft to ascend and descend, and the positions of the stirring blades can be flexibly adjusted according to the heating stage and the material amount. The stirring motor drives the stirring blades to stir, so that the limitation of heat transfer is broken, the uniformity of heat transfer is promoted, local overheating or insufficiency is avoided, the heating uniformity is improved, and the stable product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of resistance furnaces, in particular to a resistance furnace used for uniformly heating and uniformly nitriding vanadium-nitrogen alloys. Background Art

[0002] A resistance furnace is a heating device that generates heat by passing an electric current through a resistance material. It is widely used in industrial production. It heats workpieces or materials through electric heating elements or heating media and has the characteristics of high efficiency, controllability and long life.

[0003] Vanadium-nitrogen alloy is an important additive in the steel industry. The uniformity of its heating process directly affects product quality and performance. At present, when using traditional heating resistance furnaces, the material is usually in a static state during the heating process, and heat is transferred only by heat conduction and heat radiation. This leads to uneven temperature distribution in the furnace. The degree of heating of different parts of the vanadium-nitrogen alloy varies greatly, which is prone to local overheating or insufficient heating. This affects the uniformity of the alloy composition and the stability of product performance, and is not practical enough. Therefore, it is necessary to redesign a resistance furnace for uniform heating and uniform nitriding of vanadium-nitrogen alloy to address the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a resistance furnace for uniform heating and uniform nitriding of vanadium-nitrogen alloy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A resistance furnace for uniform heating and uniform nitriding of vanadium-nitrogen alloys, comprising a base, a furnace body fixedly mounted on the upper end face of the base, two connecting plates fixedly mounted on the inner wall of the base, a slider slidably mounted between the two connecting plates via a sliding mechanism, a tooth plate fixedly mounted on the bottom wall of the slider, a rotating shaft rotatably mounted inside the base, a transmission motor connected to the rotating shaft fixedly mounted on the outer wall of the base, the outer wall of the rotating shaft being connected to the tooth plate via a rotating mechanism, a movable opening cooperating with the slider is opened on the upper end face of the base and the bottom wall of the furnace body, and the upper end face of the slider is fixed A placement plate is installed, and a heating tank is slidably installed on the upper end surface of the placement plate. Two bolts are rotatably installed on the upper end surface of the placement plate through a supporting mechanism. The ends of the two bolts are rotatably connected to a clamping plate through a connecting mechanism. A hydraulic rod is fixedly installed on the outer wall of the furnace body through a fixed plate, and a lifting plate is fixedly installed on the telescopic end of the hydraulic rod. A stirring shaft is rotatably installed on the bottom wall of the lifting plate, and a stirring motor connected to the stirring shaft is fixedly installed on the upper end surface of the lifting plate. The stirring shaft rotates and passes through the interior of the furnace body. A plurality of stirring blades are fixedly installed on the outer wall of the stirring shaft through a mounting sleeve.

[0006] Preferably, the sliding mechanism includes a rhombic rod fixedly installed between two connecting plates, and the rhombic rod slidably penetrates through the slider.

[0007] Preferably, the rotating mechanism includes a gear fixedly installed on the outer wall of the rotating shaft, and the gear engages with the toothed plate.

[0008] Preferably, the supporting mechanism includes a supporting plate fixedly installed on the upper end surface of the placing plate, and the bolt rotatably penetrates through the supporting plate by means of threads.

[0009] Preferably, the connecting mechanism includes a connecting block fixedly installed at the end of the bolt, and the end of the connecting block is rotatably connected to the outer wall of the clamping plate.

[0010] Preferably, two stabilizing rods are fixedly installed on the bottom wall of the lifting plate, and the two stabilizing rods slidably penetrate through the fixing plate.

[0011] Advantages of the present invention: 1. By providing components such as hydraulic rods, stirring shafts, and stirring blades, the hydraulic rods precisely control the lifting of the stirring shafts, enabling the stirring blades to flexibly adjust their positions according to the heating stage and the amount of materials. When loading materials, the stirring shafts are raised to facilitate operation, and when heating, they are lowered to an appropriate height. The stirring motor drives the stirring blades to stir, breaking through the heat transfer limitations, promoting uniform heat transfer, avoiding local overheating or insufficiency, improving the heating uniformity, and ensuring the stable quality of the products.

[0012] 2. By providing components such as rhombic rods, toothed plates, and gears, the rhombic rods ensure the straight and stable sliding of the sliders. The driving motor converts the rotational motion into a linear motion through the meshing of the gears and the toothed plates, precisely driving the placing plate and the heating tank to move, making the loading and unloading of materials smoother and more efficient, and reducing the difficulty and error of manual operation. Description of the drawings

[0013] Figure 1 is a schematic structural diagram of a resistance furnace for uniformly heating and uniformly nitriding vanadium-nitrogen alloy proposed by the present invention; Figure 2 is Figure 1 the vertical sectional structural diagram of; Figure 3 is a schematic side vertical sectional structural diagram of a resistance furnace for uniformly heating and uniformly nitriding vanadium-nitrogen alloy proposed by the present invention; Figure 4 is Figure 2 the enlarged structural diagram of part A in; Figure 5 is Figure 3 the enlarged structural diagram of part B in.

[0014] In the figure: 1 base, 2 furnace body, 3 connecting plate, 4 rhombic rod, 5 slider, 6 toothed plate, 7 rotating shaft, 8 driving motor, 9 gear, 10 placement plate, 11 heating tank, 12 support plate, 13 bolt, 14 connecting block, 15 clamping plate, 16 fixing plate, 17 hydraulic rod, 18 lifting plate, 19 stabilizing rod, 20 stirring motor, 21 stirring shaft, 22 mounting sleeve, 23 stirring blade. Specific implementation manner

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0016] Referring to Figures 1-5 , a resistance furnace for uniformly heating and uniformly nitriding vanadium-nitrogen alloy, comprising a base 1, a furnace body 2 is fixedly installed on the upper end surface of the base 1, two connecting plates 3 are fixedly installed on the inner wall of the base 1, a slider 5 is slidably installed between the two connecting plates 3 through a sliding mechanism, the sliding mechanism includes a rhombic rod 4 fixedly installed between the two connecting plates 3, the rhombic rod 4 slidably penetrates through the slider 5, a toothed plate 6 is fixedly installed on the bottom wall of the slider 5, a rotating shaft 7 is rotatably installed inside the base 1, a driving motor 8 connected to the rotating shaft 7 is fixedly installed on the outer wall of the base 1, and the outer wall of the rotating shaft 7 is connected to the toothed plate 6 through a rotating mechanism, the rotating mechanism includes a gear 9 fixedly installed on the outer wall of the rotating shaft 7, and the gear 9 meshes with the toothed plate 6.

[0017] Moving openings matching with the slider 5 are provided on both the upper end surface of the base 1 and the bottom wall of the furnace body 2, a placement plate 10 is fixedly installed on the upper end surface of the slider 5, a heating tank 11 is slidably installed on the upper end surface of the placement plate 10, two bolts 13 are rotatably installed on the upper end surface of the placement plate 10 through a support mechanism, the support mechanism includes a support plate 12 fixedly installed on the upper end surface of the placement plate 10, and the bolt 13 rotatably penetrates through the support plate 12 through a thread.

[0018] Both ends of the two bolts 13 are rotatably connected to a clamping plate 15 through a connection mechanism, the connection mechanism includes a connection block 14 fixedly installed at the end of the bolt 13, and the end of the connection block 14 is rotatably connected to the outer wall of the clamping plate 15. A hydraulic rod 17 is fixedly installed on the outer wall of the furnace body 2 through a fixing plate 16, a lifting plate 18 is fixedly installed at the telescopic end of the hydraulic rod 17, two stabilizing rods 19 are fixedly installed on the bottom wall of the lifting plate 18, the two stabilizing rods 19 slidably penetrate through the fixing plate 16, a stirring shaft 21 is rotatably installed on the bottom wall of the lifting plate 18, a stirring motor 20 connected to the stirring shaft 21 is fixedly installed on the upper end surface of the lifting plate 18, the stirring shaft 21 rotates through to the inside of the furnace body 2, and multiple stirring blades 23 are fixedly installed on the outer wall of the stirring shaft 21 through a mounting sleeve 22.

[0019] When the present invention is in use, all components inside the furnace body 2 are made of tungsten-molybdenum alloy. The tungsten-molybdenum alloy mainly consists of high-melting-point tungsten and molybdenum. Through a special alloying process, it has excellent comprehensive properties, with a melting point as high as over 2600 °C, far exceeding the temperature required for heating vanadium-nitrogen alloy. Under high-temperature working conditions, it can maintain extremely high structural stability. When heating the vanadium-nitrogen alloy, the opening and closing door of the furnace body 2 can be opened. Subsequently, the driving motor 8 can drive the gear 9 to rotate through the rotating shaft 7. The gear 9 meshes with the toothed plate 6, driving the slider 5 to slide smoothly along the rhombic rod 4 in the base 1. The slider 5 drives the upper placement plate 10 to move outside the furnace body 2. Place the heating tank 11 containing the vanadium-nitrogen alloy on the placement plate 10. By rotating the bolt 13, the clamping plate 15 firmly clamps and fixes the heating tank 11 under the rotational connection of the connecting block 14; Start the driving motor 8 again and make it rotate in the reverse direction, so that the placement plate 10 together with the heating tank 11 slowly moves into the furnace body 2. After closing the opening and closing door of the furnace body 2, start the hydraulic rod 17. The hydraulic rod 17 contracts downward to lower the lifting plate 18, driving the stirring shaft 21 and the stirring blades 23 to extend into the furnace body 2. Turn on the stirring motor 20. The stirring motor 20 drives the stirring shaft 21 to rotate, and the stirring blades 23 start to stir the vanadium-nitrogen alloy in the heating tank 11. At the same time, turn on the heating device of the electric furnace body 2 to heat the vanadium-nitrogen alloy. During the heating process, the stirring blades 23 continuously stir to ensure that all parts of the vanadium-nitrogen alloy are evenly heated. The stabilizing rod 19 slides in the fixed plate 16 to ensure that the lifting plate 18 remains stable during the stirring process, avoiding shaking that may affect the stirring effect and the safe operation of the equipment. Start the driving motor 8 again and make it rotate in the reverse direction. Under the meshing drive of the gear 9 and the toothed plate 6, the placement plate 10 drives the heating tank 11 carrying the vanadium-nitrogen alloy to slowly move into the furnace body 2 along the guiding track of the rhombic rod 4. After the opening and closing door of the furnace body 2 is closed, first turn on the stirring motor 20. The stirring motor 20 outputs strong power, driving the stirring shaft 21 to rotate at a high speed, driving multiple stirring blades 23 fixed on the outer wall mounting sleeve 22 of the stirring shaft 21 to rotate at a high speed together. When the stirring blades 23 rotate at a high speed, strong nitrogen disturbances are generated at their edges, forming an airflow field similar to a vortex, preparing for subsequent cutting into the vanadium-nitrogen alloy; For cases that require nitriding treatment, heating is to provide sufficient energy to enable nitrogen atoms to diffuse into the interior of vanadium-nitrogen alloy or the surface of other materials, forming a nitrided layer with specific properties. This can improve the hardness, wear resistance, corrosion resistance, fatigue strength, etc. of the materials. For example, after forming a nitrided layer on the surface of some metal materials, their wear resistance and corrosion resistance will be significantly improved. Subsequently, start the hydraulic rod 17 to drive the lifting plate 18 to descend smoothly. Under the state where the stirring blades 23 continuously rotate at high speed, the stirring shaft 21 and the stirring blades 23 slowly extend into the heating tank 11 in the furnace body 2. Due to the centrifugal force and air flow impact force generated by the high-speed rotation of the stirring blades 23, nitrogen can cut into the solid vanadium-nitrogen alloy more smoothly. During the cutting process of the stirring blades 23, nitrogen continuously exerts a squeezing effect on the vanadium-nitrogen alloy blocks, making full contact with the vanadium-nitrogen alloy and achieving uniform nitriding.

[0020] Meanwhile, turn on the heating device of the furnace body 2 to start heating the vanadium-nitrogen alloy. During the entire heating process, the stirring blades 23 continuously maintain the actions of high-speed rotation and uniform penetration. As the heating progresses, the stirring effect of the stirring blades 23 becomes more obvious. Through continuous rotational stirring, it continuously breaks the temperature stratification inside the vanadium-nitrogen alloy, enabling the high-temperature heat in the area close to the heating source to be quickly transferred to the area with a lower temperature. During the rotation process of the stirring blades 23, radial and axial thrusts will also be generated, pushing the vanadium-nitrogen alloy to form a three-dimensional cyclic flow in the heating tank 11, ensuring that every part of the vanadium-nitrogen alloy can fully contact with the hot nitrogen and the heating elements, and achieving uniform heating of each part. The stabilizing rod 19 slides smoothly within the fixed plate 16. Its precise guiding structure and tight fitting tolerance ensure that the lifting plate 18 always remains stable during the stirring process. Even when large torques and vibrations are generated during the high-speed rotation and in-depth stirring of the stirring blades 23, the stabilizing rod 19 can effectively offset these external forces, preventing the lifting plate 18 from shaking, thereby ensuring the stability of the stirring effect and the safety of the equipment operation.

[0021] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. A resistance furnace for uniformly heating and nitriding vanadium-nitrogen alloy, comprising a base (1), characterized in that, A furnace body (2) is fixedly installed on the upper end surface of the base (1). Two connecting plates (3) are fixedly installed on the inner wall of the base (1). A slider (5) is slidably installed between the two connecting plates (3) through a sliding mechanism. A toothed plate (6) is fixedly installed on the bottom wall of the slider (5). A rotating shaft (7) is rotatably installed inside the base (1). A transmission motor (8) connected to the rotating shaft (7) is fixedly installed on the outer wall of the base (1). The outer wall of the rotating shaft (7) is connected to the toothed plate (6) through a rotating mechanism. Moving openings matching the slider (5) are formed on the upper end surface of the base (1) and the bottom wall of the furnace body (2). A placing plate (10) is fixedly installed on the upper end surface of the slider (5). A heating tank (11) is slidably installed on the upper end surface of the placing plate (10). Two bolts (13) are rotatably installed on the upper end surface of the placing plate (10) through a supporting mechanism. Clamping plates (15) are rotatably connected to the ends of the two bolts (13) through a connecting mechanism. A hydraulic rod (17) is fixedly installed on the outer wall of the furnace body (2) through a fixing plate (16). A lifting plate (18) is fixedly installed on the telescopic end of the hydraulic rod (17). A stirring shaft (21) is rotatably installed on the bottom wall of the lifting plate (18). A stirring motor (20) connected to the stirring shaft (21) is fixedly installed on the upper end surface of the lifting plate (18). The stirring shaft (21) rotatably penetrates into the furnace body (2). A plurality of stirring blades (23) are fixedly installed on the outer wall of the stirring shaft (21) through a mounting sleeve (22).

2. The resistance furnace for uniformly heating and uniformly nitriding vanadium-nitrogen alloy according to claim 1, wherein The sliding mechanism includes a rhombic rod (4) fixedly installed between the two connecting plates (3). The rhombic rod (4) slidably penetrates the slider (5).

3. A resistance furnace for uniformly heating and nitriding vanadium-nitrogen alloy according to claim 2, characterized in that, The rotating mechanism includes a gear (9) fixedly installed on the outer wall of the rotating shaft (7). The gear (9) engages with the toothed plate (6).

4. A resistance furnace for uniformly heating and nitriding vanadium nitride alloy according to claim 3, characterized in that, The supporting mechanism includes a supporting plate (12) fixedly installed on the upper end surface of the placing plate (10). The bolt (13) rotatably penetrates the supporting plate (12) through a thread.

5. A resistance furnace for uniformly heating and nitriding vanadium nitride alloy according to claim 4, characterized in that, The connecting mechanism includes a connecting block (14) fixedly installed at the end of the bolt (13). The end of the connecting block (14) is rotatably connected to the outer wall of the clamping plate (15).

6. A resistance furnace for uniformly heating and nitriding vanadium-nitrogen alloy according to claim 5, characterized in that, Two stabilizing rods (19) are fixedly installed on the bottom wall of the lifting plate (18). The two stabilizing rods (19) slidably penetrate the fixing plate (16).

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