A heat treatment device for threaded steel

Abstract

The utility model relates to heat treatment technical field, proposes a kind of heat treatment device of screw thread steel, including machine body, the bottom of the machine body is fixedly connected with support foot pad, the side of the machine body is fixedly connected with hinge, the side of the hinge is rotatably connected with sealing door, the side of the sealing door is fixedly connected with handle, the side of the sealing door is provided with observation window, the side of the machine body is provided with control panel, the inside of the machine body is provided with heat treatment cooling mechanism. Through the mutual cooperation of heat treatment cooling mechanism internal components, efficient cooling and accurate control are realized, the motor drives threaded rod to drive heat treatment block displacement, the connecting plate and slider of symmetrical distribution ensure stable movement, avoid inclination, the circumferential array fan blade of fan blade rod forms uniform airflow field, accelerates steel cooling, improves heat exchange efficiency. The mechanism realizes automatic cooling by mechanical transmission, reduces the risk of failure, can effectively improve the heat treatment quality and production efficiency of screw thread steel.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically to a heat treatment device for rebar. Background Technology

[0002] This device is specifically designed to improve the performance of rebar, achieving material modification through an integrated heating, holding, and cooling process. Utilizing medium-frequency induction heating technology, it rapidly heats the rebar to its austenitizing temperature, while an intelligent temperature control system precisely controls the holding time to ensure uniform internal microstructure transformation. The cooling stage is equipped with an adjustable-speed high-pressure water quenching or air cooling unit, supporting multiple process modes such as quenching and normalizing to meet diverse performance requirements. An automated control system monitors key parameters such as temperature and flow rate in real time, enabling dynamic adjustment and full traceability of process parameters. The device is characterized by high efficiency, energy saving, and strong production continuity, significantly improving the strength, toughness, and surface quality of rebar, and is widely applicable to the high-performance steel demands in construction, bridges, and other engineering fields.

[0003] According to a published heat treatment device for rebar (publication number: CN111763814B), the device includes a heat treatment unit and a pretreatment unit. A first control panel is fixedly connected to the front of the heat treatment unit. A heating tube is located at the bottom of the first control panel, and the rebar is placed inside the heating tube. Bottom fixing seats located on both sides of the heating tube are fixedly connected to the front of the heat treatment unit, and a top fixing seat is fixedly connected to the top of the bottom fixing seats. By cooperating with the bottom and top fixing seats, the rebar is placed on the bottom clamping rod. Then, rotating the clamping handwheel moves the top fixing block downwards, causing the top plate clamping rod inside the top fixing block to press against the top of the rebar. The cooperation between the top and bottom fixing blocks secures the rebar, preventing it from falling off during heating.

[0004] However, the above-mentioned applications have problems such as poor cooling effect of heat treatment and poor cooling effect of high temperature gas generated during heat treatment. Therefore, a heat treatment device for rebar is proposed. Utility Model Content

[0005] This utility model proposes a heat treatment device for rebar, which solves the problems of poor cooling effect and poor cooling effect of high-temperature gas generated during heat treatment in related technologies.

[0006] According to one aspect, at least one embodiment of the present invention provides a heat treatment device for rebar, comprising: a body, a support foot pad fixedly connected to the bottom of the body, a hinge fixedly connected to the side of the body, a sealing door rotatably connected to the side of the hinge, a handle fixedly connected to the side of the sealing door, an observation window provided on the side of the sealing door, a control panel provided on the side of the body, and a heat treatment cooling mechanism provided inside the body; The heat treatment cooling mechanism includes a motor, the side of which is fixedly connected to the inner wall of the machine body. A threaded rod is fixedly connected to the end of the motor output shaft. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. A connecting plate is fixedly connected to the circumferential surface of the threaded sleeve. A heat treatment block is fixedly connected to the side of the connecting plate. A slider is fixedly connected to the side of the heat treatment block. A fan motor is fixedly connected to the side of the machine body. A fan blade rod is fixedly connected to the end of the fan motor output shaft. A fan blade is engaged with the circumferential surface of the fan blade rod. A locking sleeve is engaged with the side of the fan blade rod.

[0007] For example, in at least one embodiment of the present invention, a heat treatment device for rebar is provided, which further includes: two hinges are provided, which are symmetrical to each other along the vertical central axis of the sealing door, so that the sealing door is subjected to uniform force, avoiding sagging, deformation or jamming caused by unilateral force, and ensuring that the process of opening and closing the sealing door is smooth and stable; and several support feet are provided, which are symmetrical to each other along the vertical central axis of the machine body, so as to evenly transfer the weight of the machine body and the internal load to the ground, avoiding local stress concentration that could cause the device to tilt or deform.

[0008] Two connecting plates are vertically arranged and symmetrically arranged along the vertical central axis of the threaded sleeve. The symmetrical structure ensures that the driving force is evenly distributed on both sides of the heat treatment block, avoiding tilting or jamming caused by unilateral force. The inner wall of the machine body is provided with two sliding grooves, which are arranged in a circumferential array on the inner wall of the machine body. There are also two sliders arranged in a circumferential array on the side of the heat treatment block. The two sliders share the weight of the heat treatment block and the friction during the movement, reducing the wear rate of a single slider and extending its service life.

[0009] The fan blade rod has a slot on its circumferential surface. There are several fan blades and slots, which are arranged in a circumferential array on the circumferential surface of the fan blade rod. When rotated, they form an axisymmetric radial airflow to ensure a uniform temperature field around the heat treatment block. The slot and fan blade locking structure, together with the locking sleeve, allows for disassembly, which is convenient for maintenance or replacement of worn fan blades.

[0010] The machine body has several heat dissipation vents on its side, arranged in a linear array along the side of the machine body. This increases the heat exchange area between the machine body and the outside environment, allowing the heat generated during the heat treatment process to be quickly discharged through air convection. This prevents the internal temperature of the machine body from becoming too high, which could affect the stability of the equipment or cause safety hazards. The side of the fan blade is located on the displacement trajectory of the heat treatment block, and the rotation area of ​​the fan blade always covers its displacement trajectory. This ensures that the heat-treated rebar is cooled by the fan during the displacement process, avoiding uneven cooling due to positional deviations.

[0011] According to another aspect, at least one embodiment of the present invention also provides a heat treatment device for rebar, comprising: a water mist spraying mechanism, the water mist spraying mechanism including a rotating shaft, a half gear fixedly connected to the circumferential surface of the rotating shaft, a slider two slidably connected to the inner wall of the machine body, a rack fixedly connected to the side of the slider two, the rack meshing with the half gear, a spring fixedly connected to the bottom of the rack, the end of the spring away from the rack fixedly connected to the inner wall of the machine body, a water tank fixedly connected to the inner wall of the machine body, a displacement plate fixedly connected to the side of the rack, a U-shaped plate fixedly connected to the top of the displacement plate, a water plate fixedly connected to the bottom of the U-shaped plate, a water inlet pipe fixedly connected to the top of the water tank, a water supply pipe fixedly connected to the top of the water tank, and a water mist nozzle fixedly connected to the end of the water supply pipe away from the water tank.

[0012] For example, in at least one embodiment of the present invention, a heat treatment device for rebar is provided, which further includes: a slide rail is provided on the inner wall of the machine body, the slide rail is provided in a plurality of such rails and is symmetrical to each other along the vertical central axis of the displacement plate, and two springs are provided and are symmetrical to each other along the vertical central axis of the rack, so as to provide rigid guidance for the up and down movement of the displacement plate, ensure that it does not deviate in the horizontal direction, and ensure the precise connection between the water plate and the water supply pipe in the water mist spraying mechanism.

[0013] The width of the half gear is equal to the width of the rack to avoid uneven force, slippage, or increased wear caused by the difference in width. One end of the spring is located on the displacement trajectory of the rack, so that the rack is fully compressed when it is displaced, providing sufficient elastic force for the rack to return to its original position.

[0014] The side of the water supply pipe is located on the displacement trajectory of the water plate, ensuring that the water plate can supply sufficient water to the water supply pipe to achieve periodic intermittent water supply. The side of the water mist nozzle has a nozzle, and the number of nozzles is set to several and arranged in a circumferential array on the side of the water mist nozzle. When spraying water, a conical atomization area is formed to ensure uniform circumferential cooling of the rebar and avoid stress concentration or deformation caused by unilateral water spraying.

[0015] The width of the second slider is equal to the width of the groove, ensuring that the rack moves linearly in the vertical direction and preventing lateral deviation or wobbling. The side of the water inlet pipe is not located on the displacement trajectory of the water plate, avoiding obstruction of water tank replenishment and interruption of water spray. By designing the displacement trajectories of the water inlet pipe and the water plate to be staggered, it can be ensured that the water tank is always in a replenishing state, maintaining stable system water pressure.

[0016] The working principle and beneficial effects of this utility model are as follows: 1. This utility model achieves efficient cooling and precise control through the coordinated operation of components such as the threaded rod, heat treatment block, and fan blades within the heat treatment cooling mechanism. The motor drives the threaded rod to displace the heat treatment block, while symmetrically distributed connecting plates and sliders ensure stable movement and prevent tilting. The circumferential array of fan blades on the fan blade rod creates a uniform airflow field, accelerating steel cooling and improving heat exchange efficiency. Furthermore, this mechanism achieves automated cooling through mechanical transmission, reducing the use of electrical components, lowering the risk of failure, and the rational layout of each component facilitates maintenance and parameter adjustment, effectively improving the quality and production efficiency of rebar heat treatment.

[0017] 2. This utility model achieves automated and precise cooling control through the coordinated operation of components such as half-gears, racks, and U-shaped plates within the water mist spraying mechanism. The meshing of the half-gears and racks drives the displacement plate to move, which, in conjunction with spring reset, uses the water plate to press against the water supply pipe to start and stop the water spray. This eliminates the need for complex electrical components, ensuring high reliability. The circumferential array of nozzles ensures uniform water mist coverage of the threaded steel, enhancing the cooling effect and preventing deformation caused by localized temperature differences. The precise guidance of the slide rails and sliders, along with the independent layout of the water inlet pipe, guarantees stable operation of the mechanism and continuous water supply, facilitating maintenance and effectively improving the flexibility and cooling efficiency of the heat treatment process. Attached Figure Description

[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0019] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model; Figure 2 The first view of the heat treatment mechanism of this utility model Figure 3 Schematic diagram of the external structure; Figure 3 The second view of the heat treatment mechanism of this utility model Figure 3 Schematic diagram of the external structure; Figure 4 This is a three-dimensional appearance diagram of the cooling mechanism of this utility model; Figure 5 This is a three-dimensional appearance diagram of the water mist spraying mechanism of this utility model.

[0020] In the diagram: 1. Body; 2. Supporting feet; 3. Hinge; 4. Sealing door; 5. Handle; 6. Observation window; 7. Control panel; 8. Heat treatment cooling mechanism; 81. Motor; 82. Threaded rod; 83. Threaded sleeve; 84. Connecting plate; 85. Heat treatment block; 86. Slider one; 87. Fan motor; 88. Fan blade rod; 89. Fan blade; 810. Locking sleeve; 9. Water mist spraying mechanism; 91. Rotating shaft; 92. Slider two; 93. Rack; 94. Water tank; 95. Displacement plate; 96. U-shaped plate; 97. Water plate; 98. Water inlet pipe; 99. Water supply pipe; 910. Water mist nozzle; 911. Spring; 912. Half gear. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Example 1 like Figures 1-5As shown, it illustrates a heat treatment device for rebar in one embodiment of the present invention, comprising: a body 1, a support foot pad 2 fixedly connected to the bottom of the body 1, a hinge 3 fixedly connected to the side of the body 1, a sealing door 4 rotatably connected to the side of the hinge 3, a handle 5 fixedly connected to the side of the sealing door 4, an observation window 6 provided on the side of the sealing door 4, a control panel 7 provided on the side of the body 1, and a heat treatment cooling mechanism 8 provided inside the body 1. The heat treatment cooling mechanism 8 includes a motor 81, the side of which is fixedly connected to the inner wall of the body 1. A threaded rod 82 is fixedly connected to the end of the output shaft of the motor 81. A threaded sleeve 83 is threadedly connected to the circumferential surface of the threaded rod 82. A connecting plate 84 is fixedly connected to the circumferential surface of the threaded sleeve 83. A heat treatment block 85 is fixedly connected to the side of the connecting plate 84. A slider 86 is fixedly connected to the side of the heat treatment block 85. A fan motor 87 is fixedly connected to the side of the body 1. A fan blade rod 88 is fixedly connected to the end of the output shaft of the fan motor 87. A fan blade 89 is snapped onto the circumferential surface of the fan blade rod 88. A locking sleeve 810 is snapped onto the side of the fan blade rod 88.

[0026] In some examples, the following are also included: two hinges 3 are provided, which are symmetrical to each other along the vertical central axis of the sealing door 4, so that the sealing door 4 is subjected to uniform force, avoiding sagging, deformation or jamming caused by unilateral force, and ensuring that the process of opening and closing the sealing door 4 is smooth and stable; and several support feet 2 are provided, which are symmetrical to each other along the vertical central axis of the body 1, so as to evenly transfer the weight of the body 1 and the internal load to the ground, avoiding local stress concentration that could cause the device to tilt or deform.

[0027] There are two vertically arranged connecting plates 84, which are symmetrical to each other along the vertical central axis of the threaded sleeve 83. The symmetrical structure makes the driving force evenly distributed on both sides of the heat treatment block 85, avoiding tilting or jamming caused by unilateral force. The inner wall of the machine body 1 is provided with two sliding grooves, which are arranged in a circumferential array on the inner wall of the machine body 1. There are two sliders 86, which are arranged in a circumferential array on the side of the heat treatment block 85. The two sliders 86 share the weight of the heat treatment block 85 and the friction during the movement, reducing the wear rate of a single slider 86 and extending its service life.

[0028] The fan blade rod 88 has a slot on its circumferential surface. There are several fan blades 89 and slots, which are arranged in a circumferential array on the circumferential surface of the fan blade rod 88. When rotated, they form an axisymmetric radial airflow to ensure a uniform temperature field around the heat treatment block 85. The slot and fan blade 89 are engaged in a locking sleeve 810 to facilitate disassembly, which is convenient for maintenance or replacement of worn fan blades 89.

[0029] The side of the body 1 is provided with heat dissipation vents. There are several heat dissipation vents arranged in a linear array on the side of the body 1, which increases the heat exchange area between the body 1 and the outside world. This allows the heat generated during the heat treatment process to be quickly discharged through air convection, preventing the internal temperature of the body 1 from being too high and affecting the stability of the equipment or causing safety hazards. The side of the fan blade 89 is located on the displacement trajectory of the heat treatment block 85. The rotation area of ​​the fan blade 89 always covers its displacement trajectory, ensuring that the heat-treated rebar can be cooled by the fan during the displacement process, and avoiding uneven cooling due to positional deviation.

[0030] For example, as shown in the figure, the worker opens the sealed door 4 and places the rebar that needs to be heat-treated on the heat treatment block 85. The control panel 7 provides remote control of the start and stop of the motor 81 and the fan motor 87. The start motor 81 drives the threaded rod 82 to rotate, which drives the threaded sleeve 83 and the connecting plate 84 to move axially, so that the heat treatment block 85 moves with the slider 86 in the groove, realizing the position adjustment of the steel. The fan motor 87 synchronously drives the fan blade rod 88 to rotate, and the circumferential array of fan blades 89 rotates to form radial airflow, accelerates air convection, and enhances the cooling of the steel.

[0031] Example 2 like Figures 1-5 As shown, this invention illustrates a heat treatment device for rebar in another embodiment of the present invention. The technical solution is largely the same as that of Embodiment 1, so only the differences are described. The device includes a water mist spraying mechanism 9, which comprises a rotating shaft 91. A half-gear 912 is fixedly connected to the circumferential surface of the rotating shaft 91. A slider 92 is slidably connected to the inner wall of the body 1. A rack 93 is fixedly connected to the side of the slider 92. The rack 93 meshes with the half-gear 912. The bottom of the rack 93 is fixedly connected to... There is a spring 911. The end of the spring 911 away from the rack 93 is fixedly connected to the inner wall of the body 1. A water tank 94 is fixedly connected to the inner wall of the body 1. A displacement plate 95 is fixedly connected to the side of the rack 93. A U-shaped plate 96 is fixedly connected to the top of the displacement plate 95. A water plate 97 is fixedly connected to the bottom of the U-shaped plate 96. A water inlet pipe 98 is fixedly connected to the top of the water tank 94. A water supply pipe 99 is fixedly connected to the top of the water tank 94. A water mist nozzle 910 is fixedly connected to the end of the water supply pipe 99 away from the water tank 94.

[0032] In some examples, the following are also included: the inner wall of the body 1 is provided with slide rails, the number of which is set to several and is symmetrical about each other along the vertical central axis of the displacement plate 95; the number of springs 911 is set to two and is symmetrical about each other along the vertical central axis of the rack 93, providing rigid guidance for the up and down movement of the displacement plate 95, ensuring that it does not deviate in the horizontal direction, and ensuring the precise docking of the water plate 97 and the water supply pipe 99 in the water mist spraying mechanism 9.

[0033] The width of the half gear 912 is equal to the width of the rack 93 to avoid uneven force, slippage or increased wear caused by the difference in width. One end of the spring 911 is located on the displacement trajectory of the rack 93, so that the rack 93 is fully compressed when it is displaced, providing sufficient elastic force for the rack 93 to return to its original position.

[0034] The side of the water supply pipe 99 is located on the displacement trajectory of the water plate 97, ensuring that the water plate 97 can supply sufficient water to the water supply pipe 99 to achieve periodic intermittent water supply. The side of the water mist nozzle 910 is provided with nozzles, and the number of nozzles is set to several, and they are arranged in a circumferential array on the side of the water mist nozzle 910. When spraying water, a conical atomization area is formed to ensure uniform circumferential cooling of the rebar and avoid stress concentration or deformation caused by unilateral water spraying.

[0035] The width of slider 92 is equal to the width of the groove, ensuring that rack 93 moves linearly in the vertical direction and preventing lateral deviation or swaying. The side of water inlet pipe 98 is not located on the displacement trajectory of water plate 97, avoiding obstruction of water supply to water tank 94 and interruption of water spray. By designing the displacement trajectories of water inlet pipe 98 and water plate 97 to be staggered, it can be ensured that water tank 94 is always in a water supply state, maintaining stable system water pressure.

[0036] For example, as shown in the figure, the rotation of the threaded rod 2 in the heat treatment cooling mechanism 8 drives the rotation of the rotating shaft 91, which in turn drives the half gear 912 to rotate. When the half gear 912 meshes with the rack 93, it pushes the rack 93 to move upward against the tension of the spring 911. The rack 93 drives the displacement plate 95, the U-shaped plate 96, and the water plate 97 to move upward synchronously. When the water plate 97 approaches the water supply pipe 99, the water in the water tank 94 flows to the water mist nozzle 910 through the water supply pipe 99 and is sprayed out as atomized water through the nozzles of the side circumferential array. When the half gear 912 rotates to the toothless area, the elastic force of the spring 911 causes the rack 93 to reset and the water plate 97 to move downward, so that the water tank 94 can no longer supply water to the water supply pipe 99, completing one water spray cycle and achieving intermittent and precise control of the cooling process.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat treatment apparatus for rebar, characterized in that, The machine includes a body (1), a support foot pad (2) is fixedly connected to the bottom of the body (1), a hinge (3) is fixedly connected to the side of the body (1), a sealing door (4) is rotatably connected to the side of the hinge (3), a handle (5) is fixedly connected to the side of the sealing door (4), an observation window (6) is provided on the side of the sealing door (4), a control panel (7) is provided on the side of the body (1), and a heat treatment cooling mechanism (8) is provided inside the body (1). The heat treatment cooling mechanism (8) includes a motor (81), the side of which is fixedly connected to the inner wall of the body (1), the end of the output shaft of the motor (81) is fixedly connected to a threaded rod (82), the circumferential surface of the threaded rod (82) is threadedly connected to a threaded sleeve (83), the circumferential surface of the threaded sleeve (83) is fixedly connected to a connecting plate (84), the side of the connecting plate (84) is fixedly connected to a heat treatment block (85), the side of the heat treatment block (85) is fixedly connected to a slider (86), the side of the body (1) is fixedly connected to a fan motor (87), the end of the output shaft of the fan motor (87) is fixedly connected to a fan blade rod (88), the circumferential surface of the fan blade rod (88) is clamped with a fan blade (89), and the side of the fan blade rod (88) is clamped with a locking sleeve (810).

2. The heat treatment apparatus for rebar according to claim 1, characterized in that, The number of hinges (3) is set to two, and they are symmetrical to each other along the vertical central axis of the sealing door (4). The number of support pads (2) is set to several, and they are symmetrical to each other along the vertical central axis of the body (1).

3. The heat treatment apparatus for rebar according to claim 2, characterized in that, There are two vertically arranged connecting plates (84), which are symmetrical to each other along the vertical central axis of the threaded sleeve (83). The inner wall of the machine body (1) is provided with a sliding groove. There are two sliding grooves, which are arranged in a circumferential array on the inner wall of the machine body (1). There are two sliders (86), which are arranged in a circumferential array on the side of the heat treatment block (85).

4. The heat treatment apparatus for rebar according to claim 3, characterized in that, The fan blade rod (88) has a slot on its circumferential surface. The number of fan blades (89) and slots is set to a certain number and are arranged in a circumferential array on the circumferential surface of the fan blade rod (88).

5. The heat treatment apparatus for rebar according to claim 4, characterized in that, The side of the body (1) is provided with heat dissipation vents, and the number of heat dissipation vents is set to several and arranged in a linear array on the side of the body (1). The side of the fan blade (89) is located on the displacement trajectory of the heat treatment block (85).

6. The heat treatment apparatus for rebar according to claim 5, characterized in that, A water mist spraying mechanism (9) is provided on the side of the threaded rod (82). The water mist spraying mechanism (9) includes a rotating shaft (91). A half gear (912) is fixedly connected to the circumferential surface of the rotating shaft (91). A slider two (92) is slidably connected to the inner wall of the body (1). A rack (93) is fixedly connected to the side of the slider two (92). The rack (93) meshes with the half gear (912). A spring (911) is fixedly connected to the bottom of the rack (93). The end of the spring (911) away from the rack (93) is fixedly connected to... A water tank (94) is fixedly connected to the inner wall of the machine body (1). A displacement plate (95) is fixedly connected to the side of the rack (93). A U-shaped plate (96) is fixedly connected to the top of the displacement plate (95). A water plate (97) is fixedly connected to the bottom of the U-shaped plate (96). A water inlet pipe (98) is fixedly connected to the top of the water tank (94). A water supply pipe (99) is fixedly connected to the top of the water tank (94). A water mist nozzle (910) is fixedly connected to the end of the water supply pipe (99) away from the water tank (94).

7. The heat treatment apparatus for rebar according to claim 6, characterized in that, The inner wall of the body (1) is provided with slide rails, and the number of slide rails is set to several, and they are symmetrical to each other along the vertical central axis of the displacement plate (95). The number of springs (911) is set to two, and they are symmetrical to each other along the vertical central axis of the rack (93).

8. The heat treatment apparatus for rebar according to claim 7, characterized in that, The width of the half gear (912) is equal to the width of the rack (93), and one end of the spring (911) is located on the displacement trajectory of the rack (93).

9. A heat treatment apparatus for rebar according to claim 8, characterized in that, The side of the water supply pipe (99) is located on the displacement trajectory of the water plate (97), and the side of the water mist nozzle (910) is provided with a nozzle. The number of nozzles is set to several and arranged in a circumferential array on the side of the water mist nozzle (910).

10. A heat treatment apparatus for rebar according to claim 9, characterized in that, The width of the second slider (92) is equal to the width of the groove, and the side of the water inlet pipe (98) is not located on the displacement trajectory of the water plate (97).

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