Magnetic field heat treatment equipment and method

Abstract

Vacuum magnetic field heat treatment equipment comprises a coil, a C-shaped iron core, a magnetic pole, a water cooling device and a vacuum heat treatment furnace box, the coil is wound and fixed at the middle section of the C-shaped iron core and is connected with a power supply to form a magnetic field source; the magnetic poles are fixed to the two ends of the C-shaped iron core, and the water cooling device wraps the outer sides of the magnetic poles. And the C-shaped iron core is positioned in a vacuum heat treatment furnace box. Compared with solenoid type magnetic field heat treatment equipment, the magnetic field heat treatment equipment is simpler in structure, smaller in size, lower in energy consumption of equipment operation, lower in equipment and production cost and high in production efficiency.

Description

Technical Field

[0001] This invention discloses a magnetic field heat treatment method and equipment, belonging to the field of heat treatment technology for metallic materials, including experimental methods and experimental equipment. Background Technology

[0002] Amorphous nanocrystalline soft magnetic alloys refer to soft magnetic alloys with nanocrystalline structures obtained through heat treatment based on amorphous alloys, exhibiting superior soft magnetic properties. Due to their efficient manufacturing processes and excellent material properties, amorphous nanocrystalline soft magnetic alloys are gradually replacing traditional soft magnetic materials such as silicon steel, permalloy, and ferrites, finding increasing applications in fields such as power, electronics, and communications. Heat treatment plays a crucial role in obtaining nanocrystalline soft metal materials with excellent comprehensive properties, particularly magnetic properties. Heat treatment can effectively release the internal stress generated during the rapid cooling of liquid alloys, thereby significantly improving the magnetic properties of the final product. Compared to traditional single-field heat treatment, magnetic field heat treatment, by combining an external magnetic field and a thermal field, demonstrates unique advantages in improving the performance of soft magnetic materials. Through magnetic field heat treatment, magnetic particles or particle pairs in the material can often be made oriented in an ordered manner, thus imparting anisotropy to the material. This makes the originally dissimilar magnetic domain structures in the material more easily magnetized, with the domain structures oriented approximately parallel to the magnetic field.

[0003] Current magnetic field heat treatment equipment mainly consists of a heat treatment furnace and a solenoid that provides the magnetic field source. The strong magnetic field generated within the solenoid allows the furnace to be placed inside, achieving the effect of magnetic field heat treatment. To achieve a certain output and efficiency, the furnace cavity needs a large capacity, necessitating a larger external solenoid volume. Furthermore, to meet the required magnetic field strength, the large solenoid is powered by a high-current supply, resulting in high energy consumption. The high current supplied to the solenoid and the influence of the heat treatment furnace necessitate cooling, making the entire magnetic field heat treatment equipment bulky, complex, and costly. Therefore, this also limits production efficiency.

[0004] Therefore, in order to address the problems of existing magnetic field heat treatment equipment being bulky, complex in structure, energy-intensive, costly in terms of equipment and production, and inefficient in terms of production, it is necessary to improve the heat treatment methods and equipment for metal materials in order to simplify the equipment structure, reduce the overall size of the equipment, reduce energy consumption, reduce costs, and increase production efficiency. Summary of the Invention

[0005] To address the aforementioned shortcomings, the present invention aims to provide a vacuum magnetic field heat treatment device. Compared to solenoid-type magnetic field heat treatment devices, this device has a simpler structure, smaller size, lower energy consumption, lower equipment and production costs, and higher production efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A vacuum magnetic field heat treatment device includes a coil, a C-shaped iron core, magnetic poles, a water cooling device, and a vacuum heat treatment furnace box;

[0008] The coil is wound and fixed in the middle section of the C-shaped iron core, and the coil is connected to the power supply to form a magnetic field source;

[0009] The magnetic poles are fixed at both ends of the C-shaped iron core, and the water-cooling device is wrapped around the outside of the magnetic poles;

[0010] The C-shaped iron core is located inside the vacuum heat treatment furnace box.

[0011] Preferably, the vacuum heat treatment furnace box includes a shell, a first insulation layer, a second insulation layer, a third insulation layer, a heating layer, a heat transfer layer, a furnace cavity, a vent, and a vacuum port.

[0012] Preferably, the first heat insulation layer and the second heat insulation layer are respectively disposed on the upper and lower sides of the vacuum heat treatment furnace box from the outside to the inside; the third heat insulation layer is disposed on the left, right and rear sides of the vacuum heat treatment furnace box.

[0013] The inner surface of the second insulation layer is a heating layer, and the inner surface of the third insulation layer is a heat transfer layer.

[0014] The furnace cavity is located between the third insulation layer and the second insulation layer.

[0015] Furthermore, the vent and vacuum port are located on the rear side of the furnace cavity.

[0016] A method of using a vacuum magnetic field heat treatment device includes the following steps:

[0017] S1. Place the sample into the heat treatment furnace and set the temperature of the heat treatment furnace 5 according to the requirements of the magnetic field heat treatment process for metal materials.

[0018] S2. According to the requirements of magnetic field heat treatment process for metallic materials, the furnace cavity is vacuumed and the required atmosphere is introduced to prevent the sample from oxidizing at high temperature.

[0019] S3. Start the water cooling device to cool the magnetic poles and avoid the influence of high temperature on their magnetic permeability.

[0020] S4. According to the requirements of magnetic field heat treatment process for metal materials, the magnetic field between the two magnetic poles is set by adjusting the power supply current, and magnetization treatment is performed at any temperature and time period.

[0021] One of the above technical solutions includes the following beneficial effects: using a C-shaped iron core made of high magnetic permeability material as a carrier, and driving the C-shaped iron core with a coil to magnetize it, thereby generating a large magnetic field source. Compared with solenoid-type magnetic field heat treatment equipment, it has a simpler structure, smaller size, lower energy consumption during operation, lower equipment and production costs, and higher production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the magnetic field heat treatment equipment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the heat treatment furnace in the magnetic field heat treatment equipment of the present invention.

[0024] Figure 3 This is a schematic diagram of the heating device structure of the heat treatment furnace in the magnetic field heat treatment equipment of the present invention.

[0025] Figure 4 This is a schematic diagram of the magnetic field heat treatment equipment (based on a tube furnace) of the present invention.

[0026] The components include: coil 1, C-shaped iron core 2, magnetic pole 3, water cooling device 4, vacuum heat treatment furnace box 5, box shell 5-1, insulation layer 1 5-2, insulation layer 2 5-3, insulation layer 3 5-4, heating layer 5-5, heat transfer layer 5-6, furnace cavity 5-7, vent 5-8, and vacuum port 5-9. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Example 1

[0029] like Figure 1-3 As shown, a vacuum magnetic field heat treatment device includes a coil 1, a C-shaped iron core 2, a magnetic pole 3, a water cooling device 4, and a vacuum heat treatment furnace box 5.

[0030] Coil 1 is wound and fixed in the middle section of the C-shaped iron core, and the coil is connected to the power supply to form a magnetic field source;

[0031] The magnetic poles 3 are fixed to both ends of the C-shaped iron core 2, and the water cooling device 4 is wrapped around the outside of the magnetic poles 3;

[0032] The C-shaped iron core 2 is located inside the vacuum heat treatment furnace box 5.

[0033] Using a C-shaped iron core made of high-permeability magnetic material as a carrier, a coil drives the C-shaped iron core to magnetize, thereby generating a large magnetic field source. Compared with solenoid-type magnetic field heat treatment equipment, it has a simpler structure, smaller size, lower energy consumption, lower equipment and production costs, and higher production efficiency.

[0034] The vacuum heat treatment furnace box 5 includes a shell 5-1, a heat insulation layer 1 5-2, a heat insulation layer 2 5-3, a heat insulation layer 3 5-4, a heating layer 5-5, a heat transfer layer 5-6, a furnace cavity 5-7, a vent 5-8, and a vacuum port 5-9.

[0035] The multi-layer structure design of this vacuum heat treatment furnace box enables efficient, stable, and uniform heat treatment in a vacuum environment.

[0036] Among them, the heat insulation layer 5-2 and the heat insulation layer 5-3 are respectively arranged on the upper and lower sides of the vacuum heat treatment furnace box 5 from the outside to the inside; the heat insulation layer 5-4 is arranged on the left, right and rear sides of the vacuum heat treatment furnace box 5.

[0037] The inner surface of insulation layer 2 5-3 is the heating layer 5-5, and the inner surface of insulation layer 3 5-4 is the heat transfer layer 5-6;

[0038] The furnace cavity 5-7 is located between the third insulation layer 5-4 and the second insulation layer 5-3.

[0039] With the precise layout design of the insulation layer, heating layer, and heat transfer layer, this technical solution has achieved significant optimization in terms of heat utilization, temperature uniformity, and structural compactness of the vacuum heat treatment furnace box.

[0040] In addition, the vent 5-8 and the vacuum port 5-9 are located on the rear side of the furnace cavity 5-7.

[0041] Ventilation port 5-8 and vacuum port 5-9 are centrally located on the rear side of furnace cavity 5-7, which can realize optimized airflow control and structural integration.

[0042] A method of using a vacuum magnetic field heat treatment device includes the following steps:

[0043] S1. Place the sample into the heat treatment furnace 5 and set the temperature of the heat treatment furnace 5 according to the requirements of the magnetic field heat treatment process for metal materials.

[0044] S2. According to the requirements of magnetic field heat treatment process for metallic materials, vacuum treatment is performed on furnace cavity 5-7, and the required atmosphere is introduced to prevent the sample from oxidizing at high temperature.

[0045] S3. Start the water cooling device 4 to cool the magnetic pole 3 and avoid the influence of high temperature on the magnetic permeability of the magnetic pole 3.

[0046] S4. According to the requirements of magnetic field heat treatment process for metal materials, the magnetic field between the two magnetic poles 3 is set by adjusting the power supply current, and magnetization treatment is carried out at any temperature and time period.

[0047] This method, combined with the structural design of the vacuum magnetic field heat treatment equipment, enables precise control, high efficiency, stability, and high-quality forming of the magnetic field heat treatment process for metallic materials.

[0048] Example 2

[0049] As attached Figure 4 As shown, a magnetic field heat treatment furnace based on a tube furnace includes a coil 11, a C-shaped iron core 12, detachable magnetic poles 13, connecting buckles 13-1, a tube furnace 14, an optimal magnetic field heat treatment zone 15, and a corundum tube 16.

[0050] To further explain, the C-shaped iron core 12 is made of silicon steel with high magnetic permeability. The coil 11 is wound and fixed on one side of the C-shaped iron core 12, and connected to the power supply to form a continuous and strong magnetic field source. By adjusting the power supply current, the magnitude of the magnetic field between the two magnetic poles can be adjusted.

[0051] To further explain, the detachable magnetic poles 13 are fixed to the two cut ends of the C-shaped iron core 12. The magnetic lines of force are converged through the detachable magnetic poles 13, thereby enhancing the magnetic field between the two detachable magnetic poles 13.

[0052] To further explain, the detachable magnetic pole 13 and the C-shaped iron core 12 are fixedly connected by a connecting buckle 13-1, which facilitates the layout and sampling of the corundum tube 16.

[0053] To further explain, the sample was treated in the optimal magnetic field heat treatment range of 15, which resulted in the most stable temperature and magnetic field effects.

[0054] A magnetic field heat treatment device based on a tube furnace (as shown in the attached image) Figure 4 The usage method (shown) includes the following steps:

[0055] S1. Place the sample into the corundum tube 16 of the tube furnace 14, so that the sample is in the optimal magnetic field heat treatment range 15.

[0056] S2. Place the detachable magnetic poles 13 into both ends of the corundum tube 16, and fix the C-shaped iron core 12 to the detachable magnetic poles 13 by connecting buckles 13-1.

[0057] S3. Set the temperature of the tube furnace 14 according to the requirements of the magnetic field heat treatment process for metallic materials.

[0058] S4. According to the requirements of magnetic field heat treatment process for metallic materials, the magnetic field strength between the two detachable magnetic poles 13 can be set by adjusting the power supply current, allowing magnetization treatment to be performed at any temperature and for any time period.

[0059] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A vacuum magnetic field heat treatment device, characterized in that, Includes coils, C-shaped iron cores, magnetic poles, water cooling devices, and vacuum heat treatment furnace boxes; The coil is wound and fixed in the middle section of the C-shaped iron core, and the coil is connected to the power supply to form a magnetic field source; The magnetic poles are fixed at both ends of the C-shaped iron core, and the water-cooling device is wrapped around the outside of the magnetic poles; The C-shaped iron core is located inside the vacuum heat treatment furnace box.

2. The vacuum magnetic field heat treatment equipment according to claim 1, characterized in that, The vacuum heat treatment furnace box includes a shell, insulation layer one, insulation layer two, insulation layer three, heating layer, heat transfer layer, furnace cavity, vent, and vacuum port.

3. The vacuum magnetic field heat treatment equipment according to claim 2, characterized in that, The first and second heat insulation layers are respectively installed on the upper and lower sides of the vacuum heat treatment furnace box from the outside to the inside; the third heat insulation layer is installed on the left, right and rear sides of the vacuum heat treatment furnace box. The inner surface of the second insulation layer is a heating layer, and the inner surface of the third insulation layer is a heat transfer layer. The furnace cavity is located between the third insulation layer and the second insulation layer.

4. The vacuum magnetic field heat treatment equipment according to claim 3, characterized in that, The vent and vacuum port are located on the rear side of the furnace cavity.

5. The method of using the vacuum magnetic field heat treatment equipment according to any one of claims 1-4, characterized in that: Includes the following steps: S1. Place the sample into the heat treatment furnace and set the temperature of the heat treatment furnace 5 according to the requirements of the magnetic field heat treatment process for metal materials. S2. According to the requirements of magnetic field heat treatment process for metallic materials, the furnace cavity is vacuumed and the required atmosphere is introduced to prevent the sample from oxidizing at high temperature. S3. Start the water cooling device to cool the magnetic poles and avoid the influence of high temperature on their magnetic permeability. S4. According to the requirements of magnetic field heat treatment process for metal materials, the magnetic field between the two magnetic poles is set by adjusting the power supply current, and magnetization treatment is performed at any temperature and time period.

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