A quenching device for metal heat treatment

Abstract

The utility model relates to quenching device technical field, and disclose a kind of quenching device of metal heat treatment, including equipment main body, fixed in the fixed telescopic link of equipment main body upper surface one side and the bracket fixed in telescopic link top, the inside fixed drive device of one side of the bracket, the upper surface of equipment main body another side is fixed with quenching tank.This equipment is rotated by the high friction of sharp cone rubber wheel and quenching tank inner wall, and then rotates by gear engagement to drive metal bar and steel wire brush roller rotation, forms the bidirectional rotation cooperation of metal bar and brush roller, realizes the quick removal of the surface scale of metal bar, this process can effectively reduce the scale coverage area, avoid scale residue to hinder quenching liquid contact, ensure that quenching heat transfer is uniform, improve quenching quality.

Description

Technical Field

[0001] This utility model relates to the field of quenching equipment technology, and in particular to a quenching equipment for metal heat treatment. Background Technology

[0002] Metal parts are made of either iron or non-ferrous metals. Among iron and steel, cast iron contains 2%–4.3% carbon, while steel contains 0.03%–2%. Adding alloying elements such as Si, Mn, and Cr to Fe-C alloys creates alloy cast iron or alloy steel to improve strength, hardness, and other properties. Quenching steel involves heating it to a temperature above Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel), holding it at that temperature, and then rapidly cooling it to below Ms (or near isotherm) at a rate greater than the critical cooling rate to achieve martensite (or bainite) formation. The process of transforming a metal into its solid state; solution treatment or heat treatment involving rapid cooling of materials such as aluminum alloys is also called quenching; the quenching process involves heating a metal workpiece to a suitable temperature and holding it at that temperature, then immersing it in a quenching medium such as salt water, water, oil, or air for rapid cooling; it can improve the hardness and wear resistance of the workpiece and is widely used in molds, gauges, and wear-resistant parts; by combining it with tempering at different temperatures, it can improve the strength and fatigue strength of the metal, balance the overall performance, and also enable special steels to obtain specific physicochemical properties (such as permanent magnet steel to enhance ferromagnetism).

[0003] A search revealed Chinese Patent Publication No. CN220846202U, which discloses a quenching device for heat treatment of metal parts. This device uses a stepper motor and an electric telescopic rod to rotate a rotating column, thereby increasing the contact between the quenched metal parts and the flowing water and improving the quenching efficiency.

[0004] Although this equipment can improve quenching efficiency by using a stepper motor to drive a rotating column and metal parts fixed on a quenching mesh for rotary quenching, for some metal parts with relatively regular surfaces (taking metal round bars as an example), during the process of fixing the metal parts on the surface of the quenching mesh and during the process of starting the equipment and immersing them in the quenching liquid, the surface of the metal parts may undergo an oxidation reaction with air or water vapor, generating a certain amount of oxide scale. Among them, thicker oxide scale can usually fall off automatically, but some thinner oxide scale that is closely attached to the surface of the metal parts will, to a certain extent, hinder the direct contact between the area and the quenching liquid, causing the heat transfer rate of the area to differ from other areas without oxide scale. This may result in uneven quenching hardness of the workpiece surface (soft spots appearing), insufficient local structural transformation, and thus stress concentration, increasing the risk of workpiece deformation or cracking. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the thin oxide scale that may be generated on the surface of metal parts in the prior art can hinder the contact between local areas and quenching liquid to a certain extent, resulting in uneven heat transfer rate, which in turn leads to uneven quenching hardness and increases the risk of workpiece deformation or cracking. To this end, we propose a quenching device for metal heat treatment.

[0006] To achieve the above objectives, this application adopts the following technical solution: a quenching device for metal heat treatment, comprising a main body, a telescopic rod fixed to one side of the upper surface of the main body, and a bracket fixed to the top of the telescopic rod. A driving device is fixed inside one side of the bracket, and a quenching tank is fixed to the other side of the upper surface of the main body. A cleaning component for removing oxide scale from the surface of metal rods is installed below the driving device and above the quenching tank.

[0007] The cleaning assembly also includes a top plate fixed to the output end of the drive device via a coupling. A connecting arc plate is fixed below the top plate, and a bottom plate is fixed below the connecting arc plate. A support for placing metal rods is rotatably connected to the center of the upper surface of the bottom plate. The central axis of the support passes downward through the bottom plate and is fixedly connected to a first gear. Multiple sets of wire brush rollers are rotatably installed at equal angles between the central axes of the top plate and the bottom plate. A third gear for meshing with the outer wall of the bottom end of each wire brush roller is fixed. Multiple sets of second gears for meshing with the first gear are rotatably connected to the lower surface of the bottom plate. A conical rubber wheel is fixed to the outer wall of the bottom end of the central shaft of each set of second gears. The conical rubber wheel generates friction by adhering to the inner wall of the quenching tank, thereby providing rotational power for the first gear and the multiple sets of wire brush rollers.

[0008] Preferably, the top plate is an inverted boss, and the outer diameter of the protruding part matches the inner diameter of the quenching tank. The outer diameter of the bottom plate is smaller than the inner diameter of the quenching tank. Two sets of limiting slide rods are symmetrically slidably inserted at the top of the top plate.

[0009] Preferably, the bottom ends of the two sets of limiting slide rods are fixed with steel wire top brushes, and the outer wall of the limiting slide rod is sleeved with an elastic element, one end of which contacts the top outer wall of the top plate, and the other end of which is fixed to the limiting element provided on the top outer wall of the limiting slide rod.

[0010] Preferably, a refractory brick tray is embedded in the center of the upper surface of the bearing, a positioning socket is fixed in the center of the lower surface of the first gear, a circular deep hole is opened in the center of the lower surface of the positioning socket, and a positioning rod is fixed in the center of the bottom of the inner wall of the quenching tank. The positioning rod corresponds vertically to the circular deep hole opened in the center of the lower surface of the positioning socket, and the outer diameter of the positioning rod matches the inner diameter of the positioning socket.

[0011] Preferably, the conical rubber wheel is composed of a central metal connector and heat-resistant silicone rubber at the edge, and the conical rubber wheel as a whole is shaped like a conical gyroscope.

[0012] Preferably, the quenching tank has a smoke exhaust port on one side of its outer wall, which can be connected to an external smoke exhaust device.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, the equipment utilizes a conical rubber wheel, a drive device, a first gear, a third gear, and a wire brush roller. The high friction between the conical rubber wheel and the inner wall of the quenching tank enables simultaneous revolution and rotation. Furthermore, the gear meshing drives the metal rod to rotate and the wire brush roller to rotate, forming a bidirectional rotational engagement between the metal rod and the brush roller. This achieves rapid removal of oxide scale from the surface of the metal rod. This process effectively reduces the oxide scale coverage area, prevents oxide scale residue from hindering contact with the quenching liquid, ensures uniform heat transfer during quenching, and improves quenching quality.

[0015] In this invention, the device uses a limiting slide bar, an elastic spring, and a steel wire brush. By pulling the limiting slide bar upward, the spring stores force, and after releasing it, the spring's restoring force allows the steel wire brush to adhere tightly to the top of the metal rod. Combined with the bottom cleaning component, this forms an all-around cleaning process. This design ensures that the oxide scale on the top of the metal rod is completely removed, further reducing local cooling differences during quenching, lowering the risk of workpiece deformation or cracking, and improving the product qualification rate. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a schematic diagram of the main view structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the planar structure of this utility model;

[0020] Figure 4 This is a partial sectional view of the structure of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 6 This is a schematic diagram showing the disassembled structure of the cleaning component of this utility model;

[0023] Figure 7 This is a bottom view of the cleaning component structure of this utility model.

[0024] Legend: 1. Main body of equipment; 11. Telescopic rod; 12. Support; 13. Drive device; 14. Quenching tank; 141. Positioning rod; 15. Exhaust port; 2. Top plate; 21. Bottom plate; 22. Connecting arc plate; 23. Steel wire brush roller; 231. Third gear; 24. Steel wire top brush; 25. Limiting slide rod; 26. Support seat; 261. Refractory brick tray; 27. First gear; 271. Positioning socket; 28. Second gear; 29. ​​Conical rubber wheel. Detailed Implementation

[0025] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0026] Reference Figure 1-7 As shown, this utility model provides a technical solution: a quenching device for metal heat treatment, including a main body 1, a telescopic rod 11 fixed to one side of the upper surface of the main body 1, and a bracket 12 fixed to the top of the telescopic rod 11. A driving device 13 is fixed inside one side of the bracket 12, and a quenching tank 14 is fixed to the other side of the upper surface of the main body 1. A cleaning component for removing oxide scale from the surface of metal rods is installed below the driving device 13 and above the quenching tank 14.

[0027] The cleaning assembly also includes a top plate 2 fixed to the output end of the drive device 13 via a coupling. A connecting arc plate 22 is fixed below the top plate 2, and a bottom plate 21 is fixed below the connecting arc plate 22. A support 26 for placing metal rods is rotatably connected to the center of the upper surface of the bottom plate 21. The central axis of the support 26 passes downward through the bottom plate 21 and is fixedly connected to a first gear 27. Multiple sets of wire brush rollers 23 are rotatably installed at equal angles between the central axes of the top plate 2 and the bottom plate 21. A third gear 231 for meshing with the outer wall of the bottom end of each wire brush roller 23 is fixed. Multiple sets of second gears 28 for meshing with the first gear 27 are rotatably connected to the lower surface of the bottom plate 21. A conical rubber wheel 29 is fixed to the outer wall of the bottom end of the central shaft of each set of second gears 28. The conical rubber wheel 29 generates friction by sticking to the inner wall of the quenching tank 14, thereby providing rotational power for the first gear 27 and the multiple sets of wire brush rollers 23.

[0028] Reference Figure 3-7As shown in this embodiment: the top plate 2 is an inverted boss, and the outer diameter of the protruding part matches the inner diameter of the quenching tank 14. The outer diameter of the bottom plate 21 is smaller than the inner diameter of the quenching tank 14. Two sets of limiting slide rods 25 are symmetrically slidably inserted on the top of the top plate 2. A sealing ring is embedded in the lower surface of the top plate 2. The shape of the inverted boss makes the top plate 2 and the quenching tank 14 form a sealed space to prevent the leakage of water mist, smoke and other derivatives generated during quenching.

[0029] Reference Figure 2-6 As shown in this embodiment: steel wire brushes 24 are fixed at the bottom of the two sets of limiting slide rods 25. Elastic elements are sleeved on the outer wall of the limiting slide rods 25, and one end of the elastic element contacts the top outer wall of the top plate 2. The other end of the elastic element is fixed to the limiting element set on the top outer wall of the limiting slide rod 25. The steel wire brushes 24 are driven to stick tightly to the top area of ​​the metal rod through the elastic element.

[0030] Reference Figure 4-6 As shown in this embodiment: a refractory brick tray 261 is embedded in the center of the upper surface of the support 26; a positioning socket 271 is fixed in the center of the lower surface of the first gear 27; a circular deep hole is opened in the center of the lower surface of the positioning socket 271; a positioning rod 141 is fixed in the center of the bottom of the inner wall of the quenching pot 14; the positioning rod 141 corresponds vertically to the circular deep hole opened in the center of the lower surface of the positioning socket 271; and the outer diameter of the positioning rod 141 matches the inner diameter of the positioning socket 271. The cooperation between the positioning rod 141 and the circular deep hole opened on the surface of the positioning socket 271 can enhance the stability of the cleaning component and the quenching pot 14, prevent it from shaking during rotation and causing the metal rod to fall off, and the circular deep hole opened at the bottom can reduce the blockage of metal debris.

[0031] Reference Figure 5-7 As shown in this embodiment, the conical rubber wheel 29 is composed of a central metal connector and heat-resistant silicone rubber at the edge. The conical rubber wheel 29 is shaped like a conical gyroscope. When the conical rubber wheel 29 is squeezed, it will tilt and deform. One side of its outer wall is in close contact with the quenching tank 14 to form a relatively strong friction force.

[0032] Reference Figure 1-4 As shown in this embodiment: a telescopic rod 11 is fixed on the other side of the upper surface of the main body 1 of the equipment, a bracket 12 is fixed at the output end of the telescopic rod 11, and a cavity for installing the drive device 13 is opened at the end of the bracket 12 away from the telescopic rod 11. A smoke exhaust port 15 for external smoke exhaust device is opened on one side of the outer wall of the quenching tank 14.

[0033] Working principle: The operator first places the heated metal rod on the support 26. At this time, the metal rod is in contact with the upper surface of the refractory brick tray 261. Then, the operator activates the telescopic rod 11 to move the bracket 12, the entire cleaning assembly and the metal rod to be quenched inside it down to the port position of the quenching tank 14. A part of the bottom of the cleaning assembly extends into the quenching tank 14. At this time, the outer wall of the conical rubber wheel 29 is in close contact with the inner wall of the quenching tank 14. When the conical rubber wheel 29 is squeezed by the inner wall of the quenching tank 14, it will deform slightly and retract inward.

[0034] Before placing the metal rod on the bearing 26, the limiting slide rod 25 needs to be pulled upward. While pulling the limiting slide rod 25 upward, the elastic element, i.e. the spring, is stretched and stores force. When the metal rod is completely placed on the bearing 26, the pulling of the limiting slide rod 25 is released, and the limiting slide rod 25 moves down to reset. At this time, the bottom of the wire brush 24 is in close contact with the top of the metal rod.

[0035] Subsequently, the drive unit 13 is activated to rotate the entire cleaning assembly. This assembly drives multiple sets of conical rubber wheels 29 to revolve. As these conical rubber wheels revolve, their outer walls are in close contact with the inner wall of the quenching tank 14, generating relatively strong friction. Due to this high friction, the conical rubber wheels 29 also rotate simultaneously. The rotation of these multiple sets of conical rubber wheels 29, through engagement with the second gear 28, drives the first gear 27 to rotate. The first gear 27 drives the bearing 26, the refractory brick tray 261, and the metal rods to rotate together. Simultaneously, the first gear 27 engages with multiple sets of third gears 231 to rotate... The drive unit 11 activates multiple sets of third gears 231, which in turn drive multiple sets of wire brush rollers 23 to rotate simultaneously. The rotating wire brush rollers 23 work in conjunction with the rotating metal rod and the wire brush 24 attached to the top of the metal rod to quickly remove the oxide scale from the surface of the metal rod. Once the oxide scale on the surface of the metal rod has been reduced to a certain extent or completely cleaned, the telescopic rod 11 is activated again to immerse the entire cleaning assembly and the metal rod into the quenching liquid for quenching. The drive unit 13 slowly rotates the entire cleaning assembly and the metal rod inside the quenching tank 14 for uniform and efficient quenching.

[0036] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A quenching apparatus for metal heat treatment, characterized in that, The device includes a main body, a telescopic rod fixed to one side of the upper surface of the main body, and a bracket fixed to the top of the telescopic rod. A drive device is fixed inside one side of the bracket, and a quenching tank is fixed to the other side of the upper surface of the main body. A cleaning component for removing oxide scale from the surface of metal rods is installed below the drive device and above the quenching tank. The cleaning assembly also includes a top plate fixed to the output end of the drive device via a coupling. A connecting arc plate is fixed below the top plate, and a bottom plate is fixed below the connecting arc plate. A support for placing metal rods is rotatably connected to the center of the upper surface of the bottom plate. The central axis of the support passes downward through the bottom plate and is fixedly connected to a first gear. Multiple sets of wire brush rollers are rotatably installed at equal angles between the central axes of the top plate and the bottom plate. A third gear for meshing with the outer wall of the bottom end of each wire brush roller is fixed. Multiple sets of second gears for meshing with the first gear are rotatably connected to the lower surface of the bottom plate. A conical rubber wheel is fixed to the outer wall of the bottom end of the central shaft of each set of second gears. The conical rubber wheel generates friction by adhering to the inner wall of the quenching tank, thereby providing rotational power for the first gear and the multiple sets of wire brush rollers.

2. The quenching apparatus for metal heat treatment according to claim 1, characterized in that: The top plate is an inverted boss, and the outer diameter of the protruding part matches the inner diameter of the quenching tank. The outer diameter of the bottom plate is smaller than the inner diameter of the quenching tank. Two sets of limiting slide rods are symmetrically slidably inserted at the top of the top plate.

3. The quenching apparatus for metal heat treatment according to claim 2, characterized in that: The bottom ends of the two sets of limiting slide rods are fixed with steel wire top brushes. The outer wall of the limiting slide rod is fitted with an elastic element, one end of which contacts the top outer wall of the top plate, and the other end of which is fixed to the limiting element set on the top outer wall of the limiting slide rod.

4. The quenching apparatus for metal heat treatment according to claim 1, characterized in that: A refractory brick tray is embedded in the center of the upper surface of the bearing. A positioning socket is fixed in the center of the lower surface of the first gear. A circular deep hole is opened in the center of the lower surface of the positioning socket. A positioning rod is fixed at the center of the bottom of the inner wall of the quenching tank. The positioning rod corresponds vertically to the circular deep hole opened in the center of the lower surface of the positioning socket, and the outer diameter of the positioning rod matches the inner diameter of the positioning socket.

5. The quenching apparatus for metal heat treatment according to claim 1, characterized in that: The conical rubber wheel is composed of a central metal connector and heat-resistant silicone rubber at the edges, and the conical rubber wheel as a whole is shaped like a conical gyroscope.

6. The quenching apparatus for metal heat treatment according to claim 1, characterized in that: The quenching tank has a smoke exhaust port on one side of its outer wall, which can be connected to an external smoke exhaust device.

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