A rapid quenching device for high-elasticity spring stainless steel bars

Abstract

This utility model relates to the field of quenching technology for high-elasticity spring production, specifically a rapid quenching device for stainless steel bars used in high-elasticity spring production. The device includes a base column and a worktable. An induction control box is fixedly connected to the upper surface of the worktable. Three induction copper tubes, all arc-shaped, are provided on one side of the control box. A clamping device is provided on the upper surface of the worktable, comprising a sliding groove. The groove is formed on the upper surface of the worktable, and a first screw is rotatably connected to the inner wall of the groove. A slider is slidably connected to the inner wall of the groove, and the slider is threadedly connected to the first screw. This utility model solves the problem that existing quenching equipment requires manual clamping of the bars using special tools, which easily leads to burns to operators during quenching and significantly increases labor costs due to prolonged clamping.

Description

Technical Field

[0001] This utility model relates to the field of quenching technology for high-elasticity spring production, and in particular to a rapid quenching device for stainless steel bars used in high-elasticity springs. Background Technology

[0002] Quenching equipment is a process that uses local or surface heating to heat the surface of metal workpieces to a specific temperature, causing them to become austenitized in whole or in part. After processing, the workpiece is cooled. Induction hardening, on the other hand, is a heating method that uses the principle of electromagnetic induction. Its main components are as follows: power supply system, heating system, and quenching machine tool, etc.

[0003] Existing technologies, such as the utility model patent with publication number CN216192498U, disclose a quenching device for bar production. This utility model discloses a quenching device for bar production, including a first fixed frame, a feeding frame, a guide box, and a quenching mechanism. The guide box is located on the upper part of the first fixed frame, and inside the guide box are a first auxiliary material group and a second auxiliary material group. The first auxiliary material group includes a first fixed plate, an upper guide wheel, and a bearing seat. Several bearing seats and guide wheels connected to the bearing seats are located on the lower part of the first fixed plate. The upper part of the first fixed plate is connected to a pneumatic cylinder via a connecting rod. A quenching mechanism is located at one end of the guide box. The quenching mechanism includes a fixed platform, a quenching box, a composite cover, and electric heating tubes. The quenching box is located on the upper part of the fixed platform, and the composite cover is located on the upper part of the quenching box. Electric heating tubes are installed inside both the quenching box and the composite cover. This utility model addresses the problem of edge warping that occurs in existing plate quenching equipment, requiring manual assistance.

[0004] The following defects were found in response to the above: In the quenching of high-elasticity spring stainless steel bars, the existing technology usually uses quenching equipment to heat the bar to austenitization, and then uses special tools to roll the bar into a spring shape before cooling and processing it into a spring. However, when the existing quenching equipment heats and quenches the bar, it is necessary to manually use special tools to clamp the bar for heating and quenching. This can easily lead to burns to the operator during the quenching process, and the long-term clamping also greatly increases labor costs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing quenching equipment, which requires manual clamping of the bars using special tools during heating and quenching. This can easily lead to burns to operators during the quenching process, and the prolonged clamping also significantly increases labor costs. Therefore, this invention proposes a high-elasticity spring stainless steel bar rapid quenching device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a rapid quenching device for high-elasticity spring stainless steel bars, comprising a base column and a worktable. An induction control box is fixedly connected to the upper surface of the worktable. Three induction copper tubes are provided on one side of the induction control box, all three induction copper tubes being arc-shaped. A clamping device is provided on the upper surface of the worktable, the clamping device including a slide groove. The slide groove is formed on the upper surface of the worktable, a first screw is rotatably connected to the inner wall of the slide groove, and a slider is slidably connected to the inner wall of the slide groove. The slider is threadedly connected to the first screw, and the upper surface of the slider is fixedly connected to... A support column is provided, and a concave groove is formed on the upper surface of the support column. A round rod is rotatably connected to the inner wall of the concave groove. A connecting plate is fixedly connected to the arc surface of the round rod. A first semi-circular buckle is fixedly connected to the end of the connecting plate away from the support column. Two second screws are rotatably connected to the upper surface of the first semi-circular buckle. A knob is fixedly connected to the end of each of the two second screws away from the first semi-circular buckle. A second semi-circular buckle is provided above the first semi-circular buckle. The second semi-circular buckle is threadedly connected to both of the second screws. A motor is fixedly connected to one side of the workbench, and the output end of the motor is fixedly connected to the first screw.

[0007] The effect achieved by the above components is as follows: When induction hardening of the bar is required, in order to prevent the operator from being burned by the bar during hardening, the bar is clamped between the two semi-circular buckles by the first semi-circular buckle and the second semi-circular buckle through the two second screws. Then, the bar is clamped and moved by the first screw and the slider and inserted into the middle of the three induction copper tubes. The induction control box sends an alternating current to the copper tubes to generate a magnetic flux. The magnetic flux passes through the bar and generates a vortex current in the direction of the magnetic flux. The induced current is heated by the vortex current. The control motor and the first screw can make the bar heat up evenly when it reciprocates in the induction copper tubes.

[0008] Preferably, the knob has four arc grooves on its arc surface, and the four arc grooves are evenly distributed on the arc surface of the knob.

[0009] The effect achieved by the above-mentioned components is that when the operator uses the knob to turn the second screw, he can put his finger into the arc groove, which makes it easier for the operator to apply force and prevents the arc surface from slipping.

[0010] Preferably, a circular groove is provided on one side of the workbench, and a protective cover is slidably connected to the inner wall of the circular groove.

[0011] The effect achieved by the above components is that the motor is expensive, and the protective cover can protect the motor and prevent it from being damaged.

[0012] Preferably, the protective cover has a plurality of heat dissipation holes at the end away from the circular groove, and the plurality of heat dissipation holes are evenly distributed on the protective cover.

[0013] The effect achieved by the above components is that when the motor is working, it will emit a lot of hot air at a high temperature. The heat dissipation holes can be used to dissipate the hot air, thus further protecting the motor.

[0014] Preferably, the upper surface of the workbench is provided with a cleaning device, which includes two slide rods, both of which are fixedly connected to the workbench. A first convex plate is fixedly connected to the arc surface of the slide rod, and a second convex plate is slidably connected to the arc surface of the slide rod. A semi-circular hole is provided on the side of the first and second convex plates that are close to each other. Three cleaning plates are fixedly connected to the inner walls of the two semi-circular holes. All three cleaning plates are made of silicon carbide.

[0015] The effect achieved by the above components is as follows: after the bar is induction hardened, the surface of the bar will be oxidized, generating oxide scale or decarburized layer. These defects will reduce the surface quality and affect the fatigue strength of the springs made thereafter. The quenched bar is transported to the semi-circular hole between the first convex plate and the second convex plate by a clamping device through a slider and a first screw. The surface of the bar is cleaned by a silicon carbide cleaning sheet, which has the advantages of high temperature resistance, good wear resistance and high friction.

[0016] Preferably, springs are fitted onto the arc surfaces of both slide rods, and the springs are fixedly connected to one end of the slide rod and the second convex plate, respectively.

[0017] The effect achieved by the above-mentioned components is as follows: when cleaning different rods, the height can be adjusted by pulling the second convex plate upwards to clean rods of different diameters. When pulling, the spring is compressed to generate elastic force. At this time, the rod is inserted between the two semi-circular holes. When the second convex plate is released, the spring force allows the second convex plate to slide downwards and contact the rod, thereby achieving the effect of saving manpower.

[0018] Preferably, a handle is fixedly connected to the upper surface of the second convex plate, and the handle has a U-shaped cross-section.

[0019] The effect achieved by the above-mentioned components is that when the second convex plate is pulled, the operation can be made simpler and more convenient by using the handle.

[0020] In summary, the beneficial effects of this utility model are as follows:

[0021] In this invention, traditional quenching processes require heating rods for spring production, necessitating the use of specialized tools to clamp the rods and place them into the center of an induction copper tube. This process increases labor costs and carries the risk of burns to operators. This invention addresses this issue by using a clamping device. The rods are clamped between a first and second semi-circular buckle and placed into the induction copper tube for heating and quenching. A first screw and a slider facilitate the movement of the rods, minimizing the risk of burns and significantly reducing labor costs. The specific operating steps of the clamping device are as follows: Before quenching, the operator holds the rod and places it on the first semi-circular buckle. Then, using two knobs, the operator begins rotating the two second screws connected to the second semi-circular buckle. As the screws rotate, the second semi-circular buckle moves towards the first semi-circular buckle until the rods are clamped tightly in the center. Rotation of the second screws then ceases. Once the bar is clamped, the operator can start controlling the motor's output end to rotate. When the motor's output end rotates, it drives the first screw to rotate, and the rotation of the first screw also causes the connected slider to slide in the groove. The support column located on the slider also slides along with the slider. Since the first and second semicircular buckles are connected to the support column via a connecting plate, the movement of the support column also moves the bar between the first and second semicircular buckles. When the bar moves to the position in the middle of the induction copper tube, the motor can be temporarily controlled to stop the first screw from rotating. The rod is heated and quenched using an induction control box and an induction copper tube. During this process, the position of the rod in the induction copper tube can be finely adjusted by rotating the first screw of the motor, so that the surface of the rod is heated evenly until the rod reaches the austenitic slip state and then heating is stopped. When rotating the two second screws by the knob, the operator can put their fingers into the arc groove for easier force application. The protective cover located in the circular groove covers the motor when it is working, which plays a protective role for the motor. The several heat dissipation holes on the protective cover allow the heat emitted by the motor to dissipate through the heat dissipation holes, which plays a heat dissipation role and further protects the motor.

[0022] In this invention, after the bar is heated and quenched to an austenitic state by induction copper, the surface of the bar will be oxidized at high temperature, resulting in oxide scale or decarburized layer. The oxide scale and decarburized layer will reduce the surface quality of the bar and may even reduce the fatigue strength of the spring made from the bar. By setting up a cleaning device, the silicon carbide cleaning sheet between the first convex plate and the second convex plate is used to clean the oxide scale and decarburized layer on the surface of the bar, preventing the oxide scale and decarburized layer from affecting the surface quality of the bar. The specific operation steps of the cleaning device are as follows: After the bar is heated and quenched to an austenitic state in the induction copper tube, the motor can be immediately controlled to rotate the first screw to move the bar out of the induction copper tube. Then, a special tool is used to rotate the connecting plate around the round rod so that the connecting plate and the induction copper ring are parallel, so that the bar can bypass the induction copper tube and move along the slide to the front of the cleaning device. When moved to the front or back of the cleaning device, the connecting plate can be rotated back to be parallel to the worktable. Then, by pulling the handle on the second convex plate upward, the second convex plate will slide upward along the arc of the two slide rods. As the second convex plate slides, the spring will be compressed, generating elastic force. Then, using the first screw and slider, the rod is placed in the semi-circular hole on the first convex plate and comes into contact with the cleaning plate. At this point, the handle can be released, and the second convex plate will slide downward due to the spring force until the cleaning plate in the semi-circular hole of the second convex plate contacts the surface of the rod. Then, the first screw can be used to make the rod reciprocate in the semi-circular hole, causing the rod to rub against the cleaning plate to remove the oxide scale and decarburized layer on the surface of the rod. The cleaning plate is made of silicon carbide, which has the advantages of high temperature resistance and high coefficient of friction. The handle makes the operation of pulling the second convex plate simpler and more convenient. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the clamping device of this utility model;

[0025] Figure 3 This is a partial structural schematic diagram of the clamping device of this utility model;

[0026] Figure 4 This is a partial structural diagram of the cleaning device of this utility model.

[0027] Legend: 1. Base column; 2. Workbench; 3. Induction control box; 4. Induction copper tube; 5. Clamping device; 501. Slide groove; 502. First screw; 503. Slider; 504. Support column; 505. Concave groove; 506. Round rod; 507. Connecting plate; 508. First semi-circular buckle; 509. Second screw; 510. Knob; 511. Arc groove; 512. Second semi-circular buckle; 513. Motor; 514. Circular groove; 515. Protective cover; 516. Heat dissipation hole; 6. Cleaning device; 61. Slide rod; 62. First convex plate; 63. Second convex plate; 64. Semi-circular hole; 65. Cleaning plate; 66. Spring; 67. Handle. Detailed Implementation

[0028] Reference Figure 1 As shown, this utility model provides a technical solution: a rapid quenching device for high elasticity spring stainless steel bars, including a base column 1 and a worktable 2. An induction control box 3 is fixedly connected to the upper surface of the worktable 2. Three induction copper tubes 4 are provided on one side of the induction control box 3. All three induction copper tubes 4 are arc-shaped. A clamping device 5 is provided on the upper surface of the worktable 2. A cleaning device 6 is provided on the upper surface of the worktable 2.

[0029] The specific setup and function of the clamping device 5 and the cleaning device 6 will be explained in detail below.

[0030] Reference Figure 2 and Figure 3As shown, in this embodiment: the clamping device 5 includes a slide groove 501, which is formed on the upper surface of the workbench 2. A first screw 502 is rotatably connected to the inner wall of the slide groove 501, and a slider 503 is slidably connected to the inner wall of the slide groove 501. The slider 503 is threadedly connected to the first screw 502. A support column 504 is fixedly connected to the upper surface of the slider 503. A concave groove 505 is formed on the upper surface of the support column 504. A round rod 506 is rotatably connected to the inner wall of the concave groove 505, and a connecting plate 507 is fixedly connected to the arc surface of the round rod 506. A first semi-circular buckle 508 is fixedly connected to one end of the connecting plate 507 away from the support column 504. Two second screws 509 are rotatably connected to the upper surface of the first semi-circular buckle 508. A knob 510 is fixedly connected to one end of each of the two second screws 509 away from the first semi-circular buckle 508. A second semi-circular buckle 512 is provided above the first semi-circular buckle 508. The second semi-circular buckle 512 is threadedly connected to both of the two second screws 509. A motor 513 is fixedly connected to one side of the workbench 2. The output end of the motor 513 is fixedly connected to the first screw 502. When induction hardening of the bar stock is required, to prevent operators from being burned by the bar stock during quenching, the bar stock is clamped between the two semi-circular buckles 508 and 512 by two second screws 509. Then, the bar stock is moved by the first screw 502 and the slider 503 and inserted between the three induction copper tubes 4. The induction control box 3 sends an alternating current to the copper tubes to generate a magnetic flux. The magnetic flux passes through the bar stock and generates a induced current in the direction of the magnetic flux. The induced current is affected by the induced current and heats the bar stock. The control motor 513 and the first screw 502 ensure that the bar stock is heated evenly when it reciprocates in the induction copper tubes 4. The knob 510 has four arc grooves 511 on its arc surface, which are evenly distributed on the arc surface of the knob 510. When the operator rotates the second screw 509 using knob 510, they can place their fingers in the arc groove 511, making it easier to apply force and preventing slippage on the arc surface. A circular groove 514 is provided on one side of the worktable 2, and a protective cover 515 is slidably connected to the inner wall of the circular groove 514. Since the motor 513 is expensive, the protective cover 515 protects it from damage. Several heat dissipation holes 516 are evenly distributed on the end of the protective cover 515 away from the circular groove 514. When the motor 513 is working, it emits a significant amount of hot air; the heat dissipation holes 516 allow this hot air to dissipate, further protecting the motor 513.

[0031] Reference Figure 4As shown in this embodiment: the cleaning device 6 includes two slide rods 61, both of which are fixedly connected to the worktable 2. A first convex plate 62 is fixedly connected to the arc surface of the slide rod 61, and a second convex plate 63 is slidably connected to the arc surface of the slide rod 61. A semi-circular hole 64 is provided on the side of the first convex plate 62 and the second convex plate 63 that are close to each other. Three cleaning plates 65 are fixedly connected to the inner wall of each of the two semi-circular holes 64. All three cleaning plates 65 are made of silicon carbide. When the bar is induction hardened, the surface of the bar will be oxidized, generating an oxide scale or a decarburized layer. These defects will reduce the surface quality and affect the fatigue strength of the spring 66 subsequently manufactured. The clamping device 5 uses a slider 503 and a first screw 502 to transport the hardened bar to the semi-circular hole 64 between the first convex plate 62 and the second convex plate 63. The surface of the bar is cleaned using the silicon carbide cleaning plates 65. Silicon carbide has the advantages of high temperature resistance, good wear resistance, and high friction. Both sliding rods 61 have springs 66 fitted onto their arc surfaces, and the springs 66 are fixedly connected to one end of the sliding rod 61 and the second convex plate 63, respectively. When cleaning different rods, the height can be adjusted by pulling the second convex plate 63 upwards to clean rods of different diameters. When pulled, the springs 66 are compressed, generating elastic force. At this time, the rod is inserted between the two semi-circular holes 64. Releasing the second convex plate 63 allows the springs 66 to slide downwards on their own, contacting the rod, thus saving manpower. A handle 67 is fixedly connected to the upper surface of the second convex plate 63. The handle 67 has a "U" shaped cross-section. Pulling the second convex plate 63 using the handle 67 makes operation simpler and more convenient.

[0032] Working principle: In the traditional quenching process, when the bar needs to be heated to make the spring 66, a special tool is required to clamp the bar and place it in the middle of the induction copper tube 4 so that the induction copper tube 4 can heat and quench the bar. This increases labor costs and may cause burns to the operator during the quenching process. By setting up the clamping device 5, the problem can be solved. The bar is clamped between the first semicircular buckle 508 and the second semicircular buckle 512 and placed in the middle of the induction copper tube 4 for heating and quenching. The first screw 502 and the slider 503 are used to move the bar, minimizing the risk of burns and greatly reducing labor costs. The specific operation steps of the clamping device 5 are as follows: Before quenching the bar, the operator holds the bar and places it on the first semicircular buckle 508. After securing it, the operator uses two knobs 510 to start rotating the two second screws 509 connected to the second semicircular buckle 512. As the two second screws 509 are rotated, the second semicircular buckle 512 is moved towards the first semicircular buckle 508 until the second semicircular buckle 512 and the first semicircular buckle 508 clamp the bar in the middle. Then, the rotation of the two second screws 509 can be stopped. Once the rod is clamped, the operator can start controlling the output end of motor 513 to rotate. When the output end of motor 513 rotates, it will drive the first screw 502 to rotate. When the first screw 502 rotates, it will also drive the connected slider 503 to slide in the slide groove 501. The support column 504 located on the slider 503 will also slide along with the slider 503. Since the first semicircular buckle 508 and the second semicircular buckle 512 are connected to the support column 504 through the connecting plate 507, the rod between the first semicircular buckle 508 and the second semicircular buckle 512 will also move along with the support column 504. When the rod moves to the middle position of the induction copper tube 4, the motor 513 can be temporarily controlled to stop the first screw 502 from rotating. The rod is heated and quenched using the induction control box 3 and the induction copper tube 4. During this process, the motor 513 can be controlled to rotate the first screw 502 to finely adjust the position of the rod in the induction copper tube 4, so that the surface of the rod is heated evenly until the rod reaches the austenitic slip state and then the heating stops. When the two second screws 509 are rotated by the knob 510, the operator can put his / her fingers into the arc groove 511 for easier force application. The protective cover 515 located in the circular groove 514 covers the motor 513 when the motor 513 is working, which plays a protective role for the motor 513. The several heat dissipation holes 516 on the protective cover 515 allow the heat emitted by the motor 513 to dissipate through the heat dissipation holes 516, which plays a heat dissipation role and further protects the motor 513.

[0033] In this invention, after the bar is heated and quenched to austenitized state by induction copper, the surface of the bar will be oxidized at high temperature, resulting in oxide scale or decarburized layer. The oxide scale and decarburized layer will reduce the surface quality of the bar and may even reduce the fatigue strength of the spring 66 made from the bar. By setting up a cleaning device 6, the silicon carbide cleaning sheet 65 between the first convex plate 62 and the second convex plate 63 is used to clean the oxide scale and decarburized layer on the surface of the bar, preventing the oxide scale and decarburized layer from affecting the surface quality of the bar. The specific operation steps of the cleaning device 6 are as follows: After the bar is heated and quenched to austenitized state in the induction copper tube 4, the motor 513 can be immediately controlled to rotate the first screw 502 to move the bar out of the induction copper tube 4. Then, a special tool is used to rotate the connecting plate 507 around the round rod 506 so that the connecting plate 507 and the induction copper ring are parallel, so that the bar can bypass the induction copper tube 4 and move along the slide 501 to the front of the cleaning device 6. When moved to the front or back of the cleaning device 6, the connecting plate 507 can be rotated back to be parallel to the worktable 2. Then, by pulling upward on the handle 67 on the second convex plate 63, the second convex plate 63 will slide upward along the arc surface of the two slide rods 61. As the second convex plate 63 slides, it will compress the spring 66, which will generate elastic force. Then, using the first screw 502 and the slider 503, the rod is placed in the semi-circular hole 64 on the first convex plate 62 and comes into contact with the cleaning plate 65. When the time comes, the handle 67 can be released, and the second convex plate 63 will slide downward due to the elastic force of the spring 66 until the cleaning plate 65 in the semi-circular hole 64 of the second convex plate 63 contacts the surface of the rod. Then, the first screw 502 can be used to make the rod reciprocate in the semi-circular hole 64, so that the rod rubs against the cleaning plate 65 to remove the oxide scale and decarburized layer on the surface of the rod. The cleaning plate 65 is made of silicon carbide, which has the advantages of high temperature resistance and high coefficient of friction. The handle 67 makes the operation of pulling the second convex plate 63 simpler and more convenient.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection within a component, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection of 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.

Claims

1. A rapid quenching device for high-elasticity spring stainless steel bars, characterized in that: The system includes a base column (1) and a worktable (2). A sensor control box (3) is fixedly connected to the upper surface of the worktable (2). Three sensor copper tubes (4) are provided on one side of the sensor control box (3). All three sensor copper tubes (4) are arc-shaped. A clamping device (5) is provided on the upper surface of the worktable (2). The clamping device (5) includes a slide groove (501). The slide groove (501) is located on the upper surface of the worktable (2). A first screw (502) is rotatably connected to the inner wall of the slide groove (501). A slider (503) is slidably connected to the inner wall of the slide groove (501). The slider (503) is threadedly connected to the first screw (502). A support column (504) is fixedly connected to the upper surface of the slider (503). A concave groove (505) is provided on the upper surface of the support column (504). A round rod (506) is rotatably connected to the inner wall of the concave groove (505). A connecting plate (507) is fixedly connected to the arc surface of the round rod (506). A first semi-circular buckle (508) is fixedly connected to one end of the connecting plate (507) away from the support column (504). Two second screws (509) are rotatably connected to the upper surface of the first semi-circular buckle (508). A knob (510) is fixedly connected to one end of each of the two second screws (509) away from the first semi-circular buckle (508). A second semi-circular buckle (512) is provided above the first semi-circular buckle (508). The second semi-circular buckle (512) is threadedly connected to both of the two second screws (509). A motor (513) is fixedly connected to one side of the workbench (2). The output end of the motor (513) is fixedly connected to the first screw (502).

2. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 1, characterized in that: The knob (510) has four arc grooves (511) on its arc surface, and the four arc grooves (511) are evenly distributed on the arc surface of the knob (510).

3. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 1, characterized in that: A circular groove (514) is provided on one side of the workbench (2), and a protective cover (515) is slidably connected to the inner wall of the circular groove (514).

4. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 3, characterized in that: The protective cover (515) has a number of heat dissipation holes (516) at one end away from the circular groove (514), and the number of heat dissipation holes (516) are evenly distributed on the protective cover (515).

5. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 1, characterized in that: The upper surface of the workbench (2) is provided with a cleaning device (6). The cleaning device (6) includes two slide rods (61). Both slide rods (61) are fixedly connected to the workbench (2). A first convex plate (62) is fixedly connected to the arc surface of the slide rod (61). A second convex plate (63) is slidably connected to the arc surface of the slide rod (61). A semi-circular hole (64) is opened on the side of the first convex plate (62) and the second convex plate (63) that are close to each other. Three cleaning plates (65) are fixedly connected to the inner walls of the two semi-circular holes (64). All three cleaning plates (65) are made of silicon carbide.

6. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 5, characterized in that: Both of the slide rods (61) have springs (66) fitted on their arc surfaces. The springs (66) are fixedly connected to one end of the slide rod (61) and the second convex plate (63), respectively.

7. The rapid quenching device for high-elasticity spring stainless steel bars according to claim 5, characterized in that: A handle (67) is fixedly connected to the upper surface of the second convex plate (63), and the cross-section of the handle (67) is "U" shaped.

Images