Quenching furnace

Abstract

This utility model discloses a quenching furnace, relating to the technical field of metal heat treatment equipment. It includes a furnace body, which contains a furnace chamber. The furnace chamber has a muffle tube built into it. From the outside in, the furnace chamber has a radiation shielding layer, a heat insulation layer, and a working layer arranged sequentially. In this utility model, the radiation shielding layer, heat insulation layer, and working layer arranged sequentially from the outside in the furnace chamber have clearly defined functions and work together to provide a stable and suitable environment for the heat treatment process. The radiation shielding layer uses a 10mm thick nanoplate as the radiation shielding layer, which can effectively reflect heat inside the furnace, reduce energy consumption, and improve the working environment temperature outside the furnace. The heat insulation layer is composed of aluminosilicate fiberboard and mullite crystal fiber bricks laid sequentially. The aluminosilicate fiberboard has excellent heat insulation performance, and the mullite crystal fiber bricks further enhance the heat insulation effect. The working layer is laid with high-alumina shaped refractory bricks and high-alumina lightweight heat-insulating refractory bricks to ensure the durability of the furnace chamber and the heat treatment effect.

Description

Technical Field

[0001] This utility model relates to the technical field of metal heat treatment equipment, specifically to quenching furnaces. Background Technology

[0002] In metal heat treatment processes, quenching furnaces are key equipment, undertaking the important tasks of heating, holding, and quenching metal materials such as saw blades. Their performance directly affects the quality, efficiency, and production cost of metal heat treatment. With the increasing demands for the quality of metal products in the manufacturing industry, especially in fields with strict standards for the comprehensive performance of tools such as saw blades in terms of hardness, toughness, and wear resistance, the technical level of quenching furnaces is particularly important.

[0003] However, existing quenching furnaces still face the following technical bottlenecks in practical applications: During the heat treatment process, the quenching furnace needs to continuously provide a large amount of heat to maintain the high-temperature environment inside the furnace. However, existing quenching furnaces have shortcomings in structural design and the selection of insulation materials, resulting in a large amount of heat being lost to the surrounding environment without being effectively utilized. This not only causes a great waste of energy but also increases the production costs of enterprises. Utility Model Content

[0004] The purpose of this invention is to provide a quenching furnace to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides a quenching furnace, which includes a furnace body, a furnace chamber body, and a muffle tube inside the furnace chamber body. The furnace chamber body is provided with a radiation shielding layer, a heat insulation layer, and a working layer from the outside to the inside. The radiation shielding layer is made of nano-board, the heat insulation layer is laid with aluminum silicate fiber board and mullite crystal fiber brick in sequence, and the working layer is made of high alumina shaped refractory brick and high alumina lightweight heat-insulating refractory brick.

[0006] Furthermore, the furnace body is equipped with a silicon controlled rectifier power regulator, and the heating element of the furnace body is a MoSi2 U-shaped rod.

[0007] Furthermore, the aluminum silicate fiberboard and mullite crystal fiber bricks are formed by molding and calibrated with a measuring tape during installation.

[0008] Furthermore, a pre-installation platform is provided at the bottom of the furnace body. Before installation, the furnace body is simulated and stacked on the pre-installation platform, and the stepped seams are corrected before it is installed into the furnace body as a whole.

[0009] Furthermore, the protective gas for the muffle tube inside the furnace body is nitrogen.

[0010] Furthermore, the furnace body is equipped with a temperature monitoring thermocouple and a conventional high-temperature thermocouple.

[0011] Furthermore, the thickness of the nanoplate is 10 mm.

[0012] Furthermore, the dimensions of the furnace body are 5020mm × 1145mm × 1690mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a furnace body with a radiation shielding layer, an insulation layer, and a working layer arranged sequentially from the outside in. Each layer has a clear function and works together to provide a stable and suitable environment for the heat treatment process. The radiation shielding layer uses 10mm thick nano-plates as the radiation shielding layer, which can effectively reflect heat inside the furnace, reduce energy consumption, and improve the working environment temperature outside the furnace, thus saving energy and improving the comfort of the operating environment. The insulation layer is composed of aluminosilicate fiberboard and mullite crystal fiber bricks laid sequentially. The aluminosilicate fiberboard has excellent thermal insulation performance, and the mullite crystal fiber bricks further enhance the thermal insulation effect, ensuring stable furnace temperature and facilitating precise control of the heat treatment process. The working layer is laid with high-alumina shaped refractory bricks and high-alumina lightweight insulating refractory bricks, which can withstand high-temperature environments, ensuring the durability of the furnace body and the heat treatment effect, extending the service life of the equipment, and reducing maintenance costs.

[0015] 2. This utility model utilizes a MoSi2 U-shaped heating element for the furnace body, enabling stable operation at high temperatures and suitable for continuous operation at 1250℃. This meets the heat treatment requirements of high-precision, high-strength band saw blades, ensuring both the quality and efficiency of the heat treatment. A silicon controlled rectifier (SCR) power regulator is installed on the furnace body to precisely control the furnace temperature, ensuring temperature stability during the heat treatment process. Temperature monitoring thermocouples and conventional high-temperature thermocouples are installed within the furnace chamber to monitor the furnace temperature in real time, preventing excessively rapid heating that could cause localized overheating and damage to the muffle tube, thus ensuring equipment safety. The furnace body has a pre-installed platform at the bottom, which allows for simulated stacking before installation. The pre-installed platform corrects the stepped seams, ensuring the entire plane is straight and the gaps are tightly sealed. Then, the whole thing is installed into the furnace body, improving installation efficiency and accuracy and reducing adjustments and rework during the installation process. Aluminum silicate fiberboard and mullite crystal fiber bricks are used as insulation layer materials. They are processed and shaped by molds to ensure the accuracy of shape and size. During laying, a measuring ruler is used to ensure the flatness and tightness of the laying, thereby improving the insulation effect and facilitating subsequent maintenance and replacement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the quenching furnace;

[0017] Figure 2 This is a cross-sectional view of the quenching furnace.

[0018] Figure 3 This is a schematic diagram of the side structure of the quenching furnace body;

[0019] Figure 4 This is a structural diagram of the furnace chamber and pre-assembly platform in a quenching furnace.

[0020] Figure 5 This is a schematic diagram of the structure of the mullite crystal fiber brick and the mold in the quenching furnace.

[0021] Figure 6 This diagram shows the positions of the temperature monitoring thermocouple and the conventional high-temperature thermocouple in the quenching furnace.

[0022] In the picture:

[0023] 1. Furnace body; 2. Pre-assembly platform; 3. Nanoplate; 4. Aluminosilicate fiberboard; 5. Mullite crystal fiber brick; 6. High-alumina shaped refractory brick; 7. High-alumina lightweight insulating refractory brick; 8. Furnace chamber body; 9. Mold; 10. Temperature monitoring thermocouple; 11. Conventional high-temperature thermocouple. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 This utility model provides a technical solution:

[0026] See Figure 1 and Figure 2 As shown, the quenching furnace includes a furnace body 1, which contains a furnace chamber 8. The furnace chamber 8 has a muffle tube inside. From the outside to the inside, the furnace chamber 8 is provided with a radiation shielding layer, a heat insulation layer, and a working layer. The radiation shielding layer is made of nano-board 3. The heat insulation layer is laid with aluminum silicate fiberboard 4 and mullite crystal fiber brick 5 in sequence. The working layer uses high-alumina shaped refractory brick 6 and high-alumina lightweight heat-insulating refractory brick 7.

[0027] In the specific implementation process, the furnace body 1 contains the furnace chamber body 8, which is the core part of the quenching furnace and is used for heat treatment of the band saw blade. The radiation shielding layer is located on the outermost layer of the furnace chamber body 8 and is made of nano-plate 3. The nano-plate 3 has excellent radiation shielding performance, which can effectively reflect the heat inside the furnace body 1, reduce energy consumption, and improve the working environment temperature outside the furnace body 1. The heat insulation layer is adjacent to the inner side of the radiation shielding layer and is made of aluminum silicate fiber board 4 and mullite crystal fiber brick 5 laid in sequence. The aluminum silicate fiber board 4 has good heat insulation performance, while the mullite crystal fiber brick 5 further enhances the heat insulation effect and ensures the temperature stability inside the furnace. The working layer is in direct contact with the atmosphere inside the furnace chamber body 8 and the saw blade. It is laid with high alumina shaped refractory brick 6 and high alumina lightweight heat-insulating refractory brick 7, which can withstand high temperature environment and ensure the durability and heat treatment effect of the furnace chamber body 8.

[0028] See Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the furnace body 1 is equipped with a silicon controlled rectifier power regulator. The heating element of the furnace body 1 is a MoSi2 U-shaped rod. The aluminum silicate fiber board 4 and the mullite crystal fiber brick 5 are processed and formed by the mold 9. The laying is calibrated by measuring tape. The bottom of the furnace body 8 is equipped with a pre-installation platform 2. Before installation, the furnace body 8 is simulated and stacked through the pre-installation platform 2. After correcting the stepped seams, it is installed into the furnace body 1 as a whole. The protective gas of the muffle tube in the furnace body 8 is nitrogen. The furnace body 8 is equipped with a temperature monitoring thermocouple 10 and a conventional high temperature thermocouple 11. The thickness of the nanoplate 3 is 10mm. The dimensions of the furnace body 1 are 5020mm×1145mm×1690mm.

[0029] In the specific implementation process, a silicon controlled rectifier (SCR) power regulator is installed on the furnace body 1 to precisely control the furnace temperature and ensure temperature stability during heat treatment. The heating element of the furnace body 1 is a MoSi2 U-shaped rod, which can work stably at high temperatures and is suitable for continuous operation at 1250℃, meeting the heat treatment requirements of high-precision, high-strength band saw blades. Alumina silicate fiberboard 4 and mullite crystal fiber bricks 5 are used as insulation layer materials, processed and shaped by mold 9 to ensure the accuracy of shape and size. During laying, a measuring ruler is used for calibration to ensure the flatness and tightness of the laying, thereby improving the insulation effect. A pre-installation platform 2 is provided at the bottom of the furnace body 8 for simulated stacking before installation. Through the pre-installation platform 2, the furnace body can be... The stepped seams of module 8 are corrected to ensure the entire plane is straight and the seams are tightly joined. Then, the whole module is installed into furnace body 1. The furnace body 8 is equipped with a muffle tube for introducing nitrogen as a protective gas to prevent the saw blade from oxidizing at high temperatures and to maintain surface quality. The furnace body 8 is equipped with a temperature monitoring thermocouple 10 and a conventional high-temperature thermocouple 11 for real-time monitoring of the furnace temperature to avoid local overheating and damage to the muffle tube due to excessively rapid heating and to ensure the safe operation of the equipment. The nanoplate 3 serves as a radiation shielding layer with a thickness of 10mm. It has excellent radiation shielding performance and can effectively reflect heat in the furnace to reduce energy consumption. The overall dimensions of furnace body 1 are 5020mm×1145mm×1690mm, which is suitable for continuous production and large-scale processing of band saw blades.

[0030] It should be noted that, depending on the width of the saw blade (20-30mm, 40-50mm, 60-100mm), the travel speed should be adjusted to 2.0 M / min, 1.5 M / min, and 0.8 M / min respectively, to ensure that saw blades of different widths achieve a uniform heat treatment effect in furnace 1. After heat treatment, slow cooling or controlled cooling rate should be selected according to the material properties to avoid internal stress or deformation of the saw blade.

[0031] Working principle:

[0032] Step 1: The furnace body 8 is the core part of the quenching furnace, used for heat treatment of the band saw blade. It consists of a radiation shielding layer, a heat insulation layer, and a working layer arranged sequentially from the outside to the inside. The radiation shielding layer is made of nano-board 3 with a thickness of 10mm, which has excellent radiation shielding performance, effectively reflects heat inside the furnace, reduces energy consumption, and improves the working environment temperature outside the furnace. The heat insulation layer is adjacent to the inner side of the radiation shielding layer and is made of aluminum silicate fiber board 4 and mullite crystal fiber brick 5 laid sequentially. Aluminum silicate fiber board 4 has good heat insulation performance, and mullite crystal fiber brick 5 further enhances the heat insulation effect, ensuring the stability of the furnace temperature. The working layer is in direct contact with the atmosphere inside the furnace body and the saw blade. It is laid with high-alumina shaped refractory brick 6 and high-alumina lightweight heat-insulating refractory brick 7, which can withstand high-temperature environments and ensure the durability of the furnace body and the heat treatment effect.

[0033] Step Two: The heating element of furnace body 1 is a MoSi2 U-shaped rod, which can work stably at high temperatures and is suitable for continuous operation at 1250℃, meeting the heat treatment requirements of high-precision, high-strength band saw blades. A silicon controlled rectifier (SCR) power regulator is installed on furnace body 1 to precisely control the furnace temperature and ensure temperature stability during heat treatment. A pre-installation platform 2 is provided at the bottom of the furnace chamber body 8. Before installation, the blades are simulated and stacked on the pre-installation platform 2. After correcting the stepped seams, the entire assembly is installed into furnace body 1, ensuring a straight plane and tight joints. A muffle tube is installed inside the furnace chamber body 8 to introduce nitrogen as a protective gas, preventing oxidation of the saw blade at high temperatures and maintaining surface quality. A temperature monitoring thermocouple 10 and a conventional high-temperature thermocouple 11 are installed inside the furnace chamber body 8 to monitor the furnace temperature in real time, preventing excessively rapid heating that could cause localized overheating and damage to the muffle tube, ensuring safe operation of the equipment. The travel speed is adjusted to 2.0 according to the saw blade widths of 20-30mm, 40-50mm, and 60-100mm respectively. The speeds are 1.5 M / min and 0.8 M / min to ensure that saw blades of different widths achieve a uniform heat treatment effect in the furnace. After heat treatment, slow cooling or controlled cooling rate should be selected according to the material properties to avoid internal stress or deformation of the saw blade.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quenching furnace, comprising a furnace body (1), characterized in that, The furnace body (1) includes a furnace body (8), which is equipped with a muffle tube. The furnace body (8) is provided with a radiation shielding layer, a heat insulation layer and a working layer from the outside to the inside. The radiation shielding layer is made of nanoplate (3). The heat insulation layer is laid with aluminum silicate fiberboard (4) and mullite crystal fiber brick (5). The working layer is made of high alumina shaped refractory brick (6) and high alumina lightweight heat-insulating refractory brick (7).

2. The quenching furnace as described in claim 1, characterized in that: The furnace body (1) is equipped with a silicon controlled rectifier power regulator, and the heating element of the furnace body (1) is a MoSi2 U-shaped rod.

3. The quenching furnace as described in claim 2, characterized in that: The aluminum silicate fiberboard (4) and mullite crystal fiber brick (5) are formed by mold (9) and calibrated by measuring tape during laying.

4. The quenching furnace as described in claim 3, characterized in that: The bottom of the furnace body (8) is provided with a pre-installation platform (2). Before installation, the furnace body (8) is simulated and stacked through the pre-installation platform (2), and after the step seams are corrected, it is installed into the furnace body (1) as a whole.

5. The quenching furnace as described in claim 4, characterized in that: The protective gas in the muffle tube inside the furnace body (8) is nitrogen.

6. The quenching furnace as described in claim 5, characterized in that: The furnace body (8) is equipped with a temperature monitoring thermocouple (10) and a conventional high-temperature thermocouple (11).

7. The quenching furnace as described in claim 6, characterized in that: The thickness of the nanoplate (3) is 10 mm.

8. The quenching furnace as described in claim 7, characterized in that: The dimensions of the furnace body (1) are 5020mm×1145mm×1690mm.

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