Heat treatment apparatus

Abstract

The application discloses a heat treatment device, which comprises a heating chamber and a heating assembly arranged in the heating chamber, wherein the heating assembly comprises a ring-shaped heater and a moving assembly, the ring-shaped heater defines a heating area for placing a workpiece, the moving assembly comprises a connecting arm and a driver, the connecting arm comprises a first end and a second end opposite in the length direction of the connecting arm, the first end is rotatably connected with an inner wall surface of the heating chamber, the second end is connected with the ring-shaped heater, the driver is used for driving the connecting arm to rotate, and the size of the connecting arm in the length direction can be changed, so that the ring-shaped heater can move relative to the workpiece. The heat treatment device has the advantages of more uniform heating of the workpiece and better heat treatment effect.

Description

Technical Field

[0001] This invention relates to the technical field of metal heat treatment equipment, and more specifically, to a heat treatment apparatus. Background Technology

[0002] Heat treatment processes not only strengthen metallic materials and fully exploit their performance potential, but also improve the quality of mechanical products and significantly extend the service life of mechanical parts. Appropriate heat treatment processes can eliminate various defects generated during hot working processes such as casting, forging, and welding, refine grains, eliminate segregation, reduce internal stress, and make the microstructure and properties of components more uniform. However, in some heat treatment equipment used in related technologies, uneven heating of the workpiece can occur when heat treating some structurally complex workpieces, resulting in poor heat treatment effects. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] This invention provides a heat treatment apparatus that provides more uniform heating of the workpiece and achieves better heat treatment results.

[0005] A heat treatment apparatus according to an embodiment of the present invention includes: a heating chamber; a heating assembly disposed in the heating chamber, the heating assembly including an annular heater and a moving assembly, the annular heater defining a heating zone for heating a workpiece, the moving assembly including a connecting arm and a driver, the connecting arm including a first end and a second end opposite to each other in its length direction, the first end being rotatably connected to the inner wall surface of the heating chamber, the second end being connected to the annular heater, the driver being used to drive the connecting arm to rotate, and the dimension of the connecting arm in its length direction being changeable so that the annular heater can move relative to the workpiece.

[0006] The connecting arm of the heat treatment apparatus in this embodiment of the invention is extendable and retractable along its length, and the first end of the connecting arm is rotatably connected to the inner wall of the heating chamber, thereby allowing the connecting arm to move freely within the heating chamber, thus moving the annular heater within the heating chamber. When there is a significant temperature difference between one or more parts of the workpiece being heated and other parts, a driver is used to drive the connecting arm to move the annular heater, changing the relative position of the annular heater and the workpiece, thereby adjusting the heating center of the annular heater so that the affected part of the workpiece can be sufficiently heated. Therefore, the heat treatment apparatus of this embodiment of the invention provides a more uniform heating effect on the workpiece.

[0007] Therefore, the heat treatment apparatus of this invention heats the workpiece more uniformly and has a better heat treatment effect.

[0008] In some embodiments, the heating assembly further includes: a vibration generating device disposed on one of the annular heater and the connecting arm, to cause the annular heater to vibrate at a first preset frequency; the first end is connected to the inner wall of the heating chamber via a ball hinge.

[0009] In some embodiments, the first preset frequency is 10kHz-17kHz.

[0010] In some embodiments, the heat treatment apparatus further includes: an air inlet channel for conveying inert gas, the heating chamber including an air inlet and an air outlet, one end of the air inlet channel being adapted to communicate with a gas source, and the other end of the air inlet channel being connected to the air inlet; an air outlet channel, one end of the air outlet channel being adapted to communicate with the outside, and the other end of the air outlet channel being connected to the air outlet; and an oxygen content detector disposed in the heating chamber.

[0011] In some embodiments, the heat treatment apparatus further includes: a housing defining a heating chamber and a cooling chamber opposite to each other in a first direction; a sliding assembly including a sliding plate and a sliding rail, the sliding rail being disposed on the inner wall surface of the housing and extending in the same direction as the first direction, the sliding rail cooperating with the sliding plate to move between a first position and a second position opposite to each other in the first direction, the first position corresponding to the heating zone; and a cooling assembly including a heat exchanger, a water inlet channel, and a water outlet channel, the heat exchanger being disposed in the cooling chamber and corresponding to the second position, the heat exchanger including a heat absorption end inlet and a heat absorption end outlet, one end of the water inlet channel being adapted to communicate with a water source, the other end of the water inlet channel being adapted to communicate with the heat absorption end inlet, one end of the water outlet channel being adapted to communicate with the heat absorption end outlet, and the other end of the water outlet channel being adapted to communicate with the outside.

[0012] In some embodiments, the heat exchanger further includes: a heat exchange main pipe and heat exchange branch pipes. The heat exchange main pipe includes the heat absorption end inlet and the heat absorption end outlet. There are multiple heat exchange branch pipes, each of which is disposed on the heat exchange main pipe and communicates with the heat exchange main pipe. Each heat exchange branch pipe is parabolic and radial. The multiple heat exchange branch pipes are spaced apart in a second direction, which is perpendicular to the first direction.

[0013] In some embodiments, there are two heat exchangers, which are opposite each other in a third direction and are movable along the third direction, with the second position located between the two heat exchangers.

[0014] In some embodiments, each heat exchange branch pipe is provided with a plurality of spray holes, and each spray hole is open to the side adjacent to the second position.

[0015] In some embodiments, the heat treatment apparatus further includes: a heat exchange device, the heat exchange device including a heat absorption side inlet, a heat absorption side outlet, a heat release side inlet, and a heat release side outlet; a water inlet channel including a first water inlet branch and a second water inlet branch, one end of the first water inlet branch being adapted to be connected to a water source, the other end of the first water inlet branch being connected to the heat absorption side inlet, one end of the second water inlet branch being connected to the heat absorption side outlet, and the other end of the second water inlet branch being connected to the heat absorption side inlet; and an air outlet channel including a first air outlet branch and a second air outlet branch, one end of the first air outlet branch being connected to the air outlet, the other end of the first air outlet branch being connected to the heat release side inlet, one end of the second air outlet branch being connected to the heat release side outlet, and the other end of the second air outlet branch being adapted to be connected to the outside.

[0016] In some embodiments, the heat treatment apparatus further includes: a heat insulation plate, at least a portion of which is movably disposed within the housing along a second direction, and at least a portion of which is located between the heating chamber and the cooling chamber in the first direction, such that the heat insulation plate separates the heating chamber and the cooling chamber, the second direction being perpendicular to the first direction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the heat treatment apparatus according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the heat treatment apparatus according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the heating component according to an embodiment of the present invention.

[0020] Figure label:

[0021] Heat treatment apparatus 100;

[0022] Shell 1; Heating chamber 11; Air inlet 111; Air outlet 112; Cooling chamber 12; Heat exchanger 121; Main heat exchanger 1211; Branch heat exchanger 1212; Sliding assembly 13; Slide plate 131; Slide rail 132; Insulation plate 14; Sealing door 15; Feed inlet 16;

[0023] Heating component 2; Annular heater 21; Moving component 22; Connecting arm 221; First end 2211; Second end 2212;

[0024] Air intake channel 3; air outlet channel 4; water inlet channel 5. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The heat treatment apparatus 100 of the present invention will now be described with reference to the accompanying drawings.

[0027] like Figures 1-2 As shown, the heat treatment apparatus 100 of this embodiment includes a heating chamber 11 and a heating component 2.

[0028] Heating assembly 2 is disposed in heating chamber 11. Heating assembly 2 includes an annular heater 21 and a moving assembly 22. The annular heater 21 defines a heating zone for heating the workpiece; in other words, the workpiece is placed in the heating zone and heated by the annular heater 21. Moving assembly 22 includes a connecting arm 221 and a driver. The connecting arm 221 includes a first end 2211 and a second end 2212 opposite to each other in its length direction. The first end 2211 is rotatably connected to the inner wall of heating chamber 11, and the second end 2212 is connected to the annular heater 21. The driver is used to drive the connecting arm 221 to rotate, and the dimension of the connecting arm 221 in its length direction can be changed so that the annular heater 21 can move relative to the workpiece.

[0029] The inventors discovered that in related technologies, heating the workpiece using a heater involves a fixed relative position between the heater and the workpiece. However, the heater's heat radiation range is limited, and the varying distances between different parts of the workpiece and the heater result in different temperatures across the workpiece. For example, when heating a workpiece using a resistance wire, the portion of the workpiece adjacent to the resistance wire receives a higher temperature than the portion farther away. Therefore, when processing workpieces with complex structures, the heaters in these technologies cannot provide uniform heating, leading to significant temperature differences between different parts of the workpiece and resulting in poor heat treatment effectiveness.

[0030] Compared with related technologies, the connecting arm 221 of the heat treatment apparatus 100 in this embodiment of the invention can extend and retract along its length, and the first end 2211 of the connecting arm 221 is rotatably connected to the inner wall of the heating chamber 11, thereby enabling the connecting arm 221 to move freely within the heating chamber 11, thus driving the annular heater 21 to move within the heating chamber 11. When there is a large temperature difference between one or more parts of the workpiece being heated and other parts, the connecting arm 221 is driven by a driver to move the annular heater 21, changing the relative position of the annular heater 21 and the workpiece, thereby adjusting the heating center of the annular heater 21 so that that part of the workpiece can be sufficiently heated. Therefore, the heat treatment apparatus 100 in this embodiment of the invention provides a more uniform heating effect on the workpiece.

[0031] Therefore, the heat treatment apparatus 100 of this embodiment of the invention heats the workpiece more uniformly and has a better heat treatment effect.

[0032] To make this application easier to understand, the heat treatment apparatus 100 of this embodiment of the invention will be further described below using the example of the first direction being consistent with the left-right direction, the second direction being consistent with the up-down direction, and the third direction being consistent with the front-back direction. The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first and second directions.

[0033] like Figures 1-2 As shown, the heat treatment apparatus 100 of this embodiment includes a housing 1, a sealing door 15, a sliding assembly 13, a cooling assembly, a heating assembly 2, an air inlet channel 3, an air outlet channel 4, an oxygen content detector, a heat exchange device, and a heat insulation plate 14. The housing 1 defines a heating chamber 11 and a cooling chamber 12.

[0034] The housing 1 includes a feed inlet 16, which communicates with the heating chamber 11 and is used to place a workpiece into the heating chamber 11. A sealing door 15 is rotatably connected to the housing 1 and can cover the feed inlet 16 to seal the heating chamber 11.

[0035] The heating chamber 11 includes an air inlet 111 and an air outlet 112. One end of the air inlet channel 3 is adapted to connect with a gas source, and the other end of the air inlet channel 3 is connected to the air inlet 111. One end of the air outlet channel 4 is adapted to connect with the outside, and the other end of the air outlet channel 4 is connected to the air outlet 112. Thus, both the air inlet channel 3 and the air outlet channel 4 are connected to the heating chamber 11. The air inlet channel 3 is used to transport inert gas. That is, inert gas can be introduced into the heating chamber 11 through the air inlet channel 3. An oxygen content detector is installed in the heating chamber 11 to measure the oxygen content in the heating chamber 11.

[0036] In other words, inert gas is supplied to the heating chamber 11 through the air inlet channel 3, causing the inert gas to expel the oxygen in the heating chamber 11 through the air outlet channel 4, thus ensuring that the workpiece is in an inert gas atmosphere during the heating process and will not be oxidized. The oxygen content in the heating chamber 11 is detected by an oxygen content detector to ensure that the oxygen in the heating chamber 11 is emptied.

[0037] In some embodiments, the first end 2211 is connected to the inner wall of the heating chamber 11 via a ball joint. In other words, the connecting arm 221 has a higher degree of freedom of rotation, which increases the range of motion of the annular heater 21, thus enabling the heat treatment apparatus 100 of the present invention to adapt to the processing of workpieces with more complex structures.

[0038] In some embodiments, the vibration generating device is disposed on one of the annular heater 21 and the connecting arm 221, so that the annular heater 21 vibrates at a first preset frequency. In other words, the vibration generating device is disposed on the annular heater 21; or, the vibration generating device is disposed on the connecting arm 221.

[0039] In other words, by setting up a vibration generating device to make the annular heater 21 vibrate at high frequency, the heating coil is continuously moved within a certain small range, thereby improving the heating range of the annular heater 21 and further enhancing the heating uniformity of the heat treatment apparatus 100 in this embodiment of the invention.

[0040] Optionally, the vibration generating device is an ultrasonic vibration device, which includes an ultrasonic control box, a transducer, and an amplitude transformer. The ultrasonic control box converts power into high-frequency electrical energy. The transducer is electrically connected to the ultrasonic control box and is used to convert high-frequency electrical energy into high-frequency mechanical vibration. The amplitude transformer is connected to the transducer to amplify the high-frequency mechanical vibration and transmit it to the annular heater 21.

[0041] Optionally, the first preset frequency is 10kHz-17kHz. Optionally, the first preset frequency is 11kHz-15kHz. Optionally, the first preset frequency is 12kHz-14kHz. This ensures that the annular heater 21 vibrates at a certain frequency, ensuring that the annular heater 21 can maintain uniform heating over a large range, and avoids fatigue damage caused by excessively high vibration frequencies of the annular heater 21 and connecting arm 221, thus improving the service life of the annular heater 21 and connecting arm 221.

[0042] The first preset frequency includes, but is not limited to, 10kHz, 12.7kHz, 14kHz, 15.2kHz, 16kHz, or 17kHz.

[0043] Optionally, the connecting arm 221 is an electric cylinder. This allows the connecting arm 221 to extend and retract along its length, and it is easy to operate.

[0044] In some embodiments, the annular heater 21 may be an annular resistance heating coil; or, the annular heater 21 may be a medium-frequency induction heating coil. Alternatively, the annular heater 21 may be other types of heaters.

[0045] It should be noted that before the workpiece is heated, thermocouples are attached to each surface of the workpiece to accurately detect the temperature of each part of the workpiece. This allows the position of the annular heater 21 to be adjusted in a timely manner by the moving device, thereby ensuring that the workpiece is heated evenly.

[0046] In some embodiments, such as Figures 1-2 As shown, the heating chamber 11 and the cooling chamber 12 are opposite each other in the left-right direction. The sliding assembly 13 includes a sliding plate 131 and a sliding rail 132. The sliding rail 132 is disposed on the inner wall surface of the housing 1, and the extending direction of the sliding rail 132 is consistent with the left-right direction. The sliding rail 132 cooperates with the sliding plate 131 to move between a first position and a second position opposite each other in the left-right direction. The first position corresponds to the heating zone.

[0047] In other words, the workpiece is placed on the slide plate 131. When the workpiece needs to be heated, the slide plate 131 slides left and right to move the workpiece to the first position. The annular heater 21 is lowered by extending the connecting arm 221 and heats the workpiece. After heating is completed, the connecting arm 221 retracts to raise the annular heater 21. The slide plate 131 is then driven again to move the workpiece towards the cooling chamber 12.

[0048] In other words, during the process of the workpiece being heated being directly fed into the cooling chamber 12 via the slide plate 131 and during the cooling process of the workpiece entering the cooling chamber 12, the shell 1 is always kept in a sealed state, thereby preventing the heated workpiece from contacting the air and causing oxidation, thus further improving the heat treatment effect.

[0049] The cooling assembly includes a heat exchanger 121, a water inlet channel 5, and a water outlet channel. The heat exchanger 121 is located in the cooling chamber 12 and corresponds to the second position. The heat exchanger 121 includes a heat absorption end inlet and a heat absorption end outlet. One end of the water inlet channel 5 is adapted to be connected to a water source, and the other end of the water inlet channel 5 is connected to the heat absorption end inlet. One end of the water outlet channel is connected to the heat absorption end outlet, and the other end of the water outlet channel is adapted to be connected to the outside.

[0050] External cooling water enters the heat exchanger 121 through the heat absorption end inlet in the water inlet channel 5. The cooling water exchanges heat with the inert gas in the cooling chamber 12 through the heat exchanger 121, thereby cooling the cooling chamber 12. After heat exchange, the cooling water is discharged from the heat exchanger 121 through the heat absorption end outlet and goes to the outside through the water outlet channel.

[0051] It is understandable that the temperature of the cooling chamber 12 is high before heat exchange. The cooling chamber 12 is cooled by heat exchange through the heat exchange element 121, so that the temperature inside the cooling chamber 12 is suitable for cooling the workpiece, thereby ensuring the heat treatment effect of the heated workpiece in the cooling chamber 12.

[0052] Specifically, such as Figure 1 As shown, the heat exchanger 121 further includes a heat exchange main pipe 1211 and heat exchange branch pipes. The heat exchange main pipe 1211 includes a heat absorption end inlet and a heat absorption end outlet. There are multiple heat exchange branch pipes, all of which are provided on the heat exchange main pipe 1211 and connected to the heat exchange main pipe 1211. Each heat exchange branch pipe is parabolic radial in shape, and the multiple heat exchange branch pipes are spaced apart in the vertical direction.

[0053] In other words, by connecting multiple heat exchange branch pipes to the heat exchange main pipe 1211, and each heat exchange branch pipe is parabolic radial, the contact area of ​​the heat exchange element 121 is increased, thereby improving the heat exchange efficiency of the heat exchange element 121.

[0054] In some embodiments, such as Figure 2 As shown, there are two heat exchangers 121, which are opposite each other in the front-to-back direction and can both move in the front-to-back direction. The second position is located between the two heat exchangers 121. In other words, during the process of conveying the workpiece to the second position, each heat exchanger 121 moves away from the other heat exchanger 121 in the front-to-back direction to avoid interference with the workpiece's movement. After the workpiece moves to the second position, each heat exchanger 121 moves closer to the other heat exchanger 121 in the front-to-back direction to approach the workpiece and exchange heat with it. Furthermore, the use of two heat exchangers 121 greatly improves the heat exchange efficiency.

[0055] In some embodiments, each heat exchange branch pipe is provided with a plurality of spray holes, and each spray hole opens to the side adjacent to the second position. For example, the spray holes of the heat exchange branch pipe located in front of the workpiece are located behind the heat exchange branch pipe, and the spray holes open to the rear. In other words, by providing a plurality of spray holes on the heat exchange branch pipe, spray treatment of the workpiece is achieved, thereby enabling the heat treatment apparatus 100 of the present invention to perform more heat treatment processes.

[0056] In some embodiments, such as Figure 1As shown, at least a portion of the heat insulation plate 14 is movably disposed within the housing 1 in the vertical direction, and at least a portion of the heat insulation plate 14 is located between the heating chamber 11 and the cooling chamber 12 in the horizontal direction, thereby separating the heating chamber 11 and the cooling chamber 12. When the workpiece is heated in the heating chamber 11 or when the workpiece undergoes other heat treatments in the cooling chamber 12, the heat insulation plate 14 moves downward to a position contacting the inner wall of the housing 1, thereby isolating the heating chamber 11 and the cooling chamber 12 and reducing the temperature influence of the heating chamber 11 on the cooling chamber 12. When the workpiece needs to be moved from the heating chamber 11 to the cooling chamber 12, the heat insulation plate 14 moves upward, allowing the workpiece to pass through the heat insulation plate 14 into the cooling chamber 12.

[0057] In some embodiments, the heat exchange device includes a heat-absorbing side inlet, a heat-absorbing side outlet, a heat-releasing side inlet, and a heat-releasing side outlet. The water inlet channel 5 includes a first water inlet branch and a second water inlet branch. One end of the first water inlet branch is adapted to be connected to a water source, and the other end of the first water inlet branch is connected to the heat-absorbing side inlet. One end of the second water inlet branch is connected to the heat-absorbing side outlet, and the other end of the second water inlet branch is connected to the heat-absorbing side inlet. The air outlet channel 4 includes a first air outlet branch and a second air outlet branch. One end of the first air outlet branch is connected to the air outlet 112, and the other end of the first air outlet branch is connected to the heat-releasing side inlet. One end of the second air outlet branch is connected to the heat-releasing side outlet, and the other end of the second air outlet branch is adapted to be connected to the outside.

[0058] High-temperature inert gas in heating chamber 11 is input from an external gas source into the first outlet branch, and then enters the heat exchanger through the heat release side inlet. Cooling water is input from a water source into the first inlet branch, and then enters the heat exchanger through the heat release side inlet. The high-temperature inert gas and cooling water exchange heat within the heat exchanger, thereby heating the cooling water. The heated cooling water is discharged from the heat absorption side outlet and enters the heat exchanger through the second inlet branch. The high-temperature inert gas is discharged from the heat release side outlet and is discharged to the outside through the second outlet branch.

[0059] The high-temperature inert gas heats the cooling water through a heat exchange device, ensuring that the temperature of the cooling water entering the heat exchanger and exchanging heat with the gas in the cooling chamber 12 is not too low. This reduces the cooling rate in the cooling chamber 12, allowing it to be used in heat treatment applications where the workpiece cools down slowly, thus further improving the practicality of the heat treatment apparatus 100 of this embodiment.

[0060] Furthermore, a first flow control valve is installed on the first outlet branch, and a second flow control valve is installed on the first inlet branch. By controlling the opening of the first and second flow control valves, the amount of cooling water and high-temperature inert gas used for heat exchange are distributed, thereby controlling the temperature of the cooling water entering the heat exchanger and achieving the purpose of controlling the cooling rate of the cooling chamber 12.

[0061] In some embodiments, the air outlet channel 4 further includes an air supply branch, one end of which is connected to the air outlet 112, and the other end of which is connected to the cooling chamber 12. A third flow control valve is provided on the air supply branch. A temperature detector is provided inside the cooling chamber 12.

[0062] In other words, a portion of the high-temperature inert gas in the heating chamber 11 enters the cooling chamber 12 through the gas supply branch, and works with the heat exchanger to regulate the cooling rate of the cooling chamber 12, thereby ensuring that the cooling rate of the cooling chamber 12 meets the requirements for the heat treatment of the workpiece. Furthermore, the temperature inside the cooling chamber 12 is monitored in real time by a temperature detector, allowing operators to precisely control the temperature reduction rate within the cooling chamber 12 and thus guarantee the heat treatment effect of the workpiece in the cooling chamber 11.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat treatment apparatus, characterized in that, include: Heating chamber; A heating assembly is disposed in the heating chamber. The heating assembly includes an annular heater, a moving assembly, and a vibration generating device. The annular heater defines a heating zone for heating a workpiece. The moving assembly includes a connecting arm and a driver. The connecting arm includes a first end and a second end opposite each other in its length direction. The first end is rotatably connected to the inner wall of the heating chamber, and the second end is connected to the annular heater. The driver is used to drive the connecting arm to rotate, and the dimension of the connecting arm in its length direction can be changed so that the annular heater can move relative to the workpiece. The vibration generating device is disposed on one of the annular heater and the connecting arm to cause the annular heater to vibrate at a first preset frequency. The first end is connected to the inner wall of the heating chamber via a ball joint.

2. The heat treatment apparatus according to claim 1, characterized in that, The first preset frequency is 10kHz-17kHz.

3. The heat treatment apparatus according to any one of claims 1-2, characterized in that, Further includes: An air intake channel is provided for conveying inert gas. The heating chamber includes an air inlet and an air outlet. One end of the air intake channel is adapted to be connected to a gas source, and the other end of the air intake channel is connected to the air inlet. An air outlet channel, one end of which is adapted to communicate with the outside, and the other end of which is connected to the air outlet; and An oxygen content detector is provided in the heating chamber.

4. The heat treatment apparatus according to claim 3, characterized in that, Further includes: A housing defining a heating chamber and a cooling chamber, the heating chamber and the cooling chamber being opposite each other in a first direction; A sliding assembly includes a sliding plate and a sliding rail. The sliding rail is disposed on the inner wall surface of the housing, and the extending direction of the sliding rail is consistent with the first direction. The sliding plate cooperates with the sliding rail to move the sliding plate between a first position and a second position relative to each other in the first direction. The first position corresponds to the heating zone. A cooling assembly includes a heat exchanger, a water inlet channel, and a water outlet channel. The heat exchanger is disposed in the cooling chamber and corresponds to the second position. The heat exchanger includes a heat-absorbing end inlet and a heat-absorbing end outlet. One end of the water inlet channel is adapted to be connected to a water source, and the other end of the water inlet channel is connected to the heat-absorbing end inlet. One end of the water outlet channel is connected to the heat-absorbing end outlet, and the other end of the water outlet channel is adapted to be connected to the outside.

5. The heat treatment apparatus according to claim 4, characterized in that, The heat exchanger further includes: a heat exchange main pipe and heat exchange branch pipes. The heat exchange main pipe includes the heat absorption end inlet and the heat absorption end outlet. There are multiple heat exchange branch pipes, all of which are disposed on the heat exchange main pipe and communicate with the heat exchange main pipe. Each heat exchange branch pipe is parabolic and radial. The multiple heat exchange branch pipes are spaced apart in a second direction, which is perpendicular to the first direction.

6. The heat treatment apparatus according to claim 5, characterized in that, There are two heat exchangers, which are opposite each other in a third direction and can move along the third direction. The second position is located between the two heat exchangers, and the third direction is perpendicular to the first direction and the second direction.

7. The heat treatment apparatus according to claim 5, characterized in that, Each of the heat exchange branch pipes is provided with multiple spray holes, and each of the spray holes is open to the side adjacent to the second position.

8. The heat treatment apparatus according to claim 4, characterized in that, Further includes: A heat exchange device, comprising a heat absorption side inlet, a heat absorption side outlet, a heat release side inlet, and a heat release side outlet; The water inlet channel includes a first water inlet branch and a second water inlet branch. One end of the first water inlet branch is adapted to be connected to a water source, and the other end of the first water inlet branch is connected to the heat absorption side inlet. One end of the second water inlet branch is connected to the heat absorption side outlet, and the other end of the second water inlet branch is connected to the heat absorption side inlet. The air outlet channel includes a first air outlet branch and a second air outlet branch. One end of the first air outlet branch is connected to the air outlet, and the other end of the first air outlet branch is connected to the heat release side inlet. One end of the second air outlet branch is connected to the heat release side outlet, and the other end of the second air outlet branch is adapted to connect to the outside.

9. The heat treatment apparatus according to any one of claims 4-8, characterized in that, Further includes: A heat insulation plate, at least a portion of which is movably disposed within the housing along a second direction, and at least a portion of which is located between the heating chamber and the cooling chamber in the first direction, such that the heat insulation plate separates the heating chamber and the cooling chamber, wherein the second direction is perpendicular to the first direction.

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