A high-toughness fastener wire spheroidizing annealing device

Abstract

The utility model discloses a high tenacity fastener wire rod spheroidizing annealing device, including annealing furnace body, the protective baffle of annealing furnace body upper end is installed, a plurality of air outlet pipes are installed in the annealing furnace body, a plurality of air ducts are installed in the annealing furnace body, the outside of air duct is opened a plurality of conical air ducts, the air duct is installed with the interception frame in. The utility model has the advantages of being through the disc rack suit in the air duct outside, can be through the conical air duct to the wire on disc rack and blow, and then can make the wire on the inside and the outside of disc rack and temperature synchronous, realize even temperature rise and temperature drop, and then can guarantee wire quality, through the interception frame can intercept the air duct upper end, and then can prevent air from leaking from above, can guarantee that air completely discharges from the conical air duct, reduces the waste of heat energy.

Description

Technical Field

[0001] This utility model relates to the technical field of wire annealing equipment, and more specifically, to a spheroidizing annealing device for high-toughness fastener wires. Background Technology

[0002] Spheroidizing annealing is an annealing process that spheroidizes carbides in steel, resulting in a microstructure of spherical or granular carbides uniformly distributed in a ferrite matrix. Spheroidizing annealing is mainly used for eutectoid and hypereutectoid steels to obtain a spheroidized microstructure similar to granular pearlite, thereby reducing hardness, improving machinability, and preparing the microstructure for quenching.

[0003] In the existing technology, when spheroidizing annealing wire, the wire is generally wound on a coil and then placed in an annealing furnace for annealing. However, there are some problems in its use. Because the wire is wound too many times on the coil, the outer wire heats up faster and the inner wire heats up slower. The cooling speed is also different, which affects the working efficiency of wire annealing. Utility Model Content

[0004] The purpose of this invention is to solve the problem of a large difference in heating and cooling rates between the inner and outer sides of wires, and to design a spheroidizing annealing device for high-toughness fastener wires.

[0005] To achieve the above objectives, the technical solution of this utility model is a high-toughness fastener wire spheroidizing annealing device, comprising an annealing furnace body, a protective cover installed on the upper end of the annealing furnace body, multiple air outlet pipes installed inside the annealing furnace body, the inlet end of the air outlet pipes being connected to a fan on the annealing furnace body, multiple air guide tubes installed inside the annealing furnace body, multiple conical air guide tubes opened on the outer side of the air guide tubes, the air outlet pipes can blow air in from the bottom of the air guide tubes and discharge it from the conical air guide tubes, and an intercepting frame is installed inside the air guide tubes to intercept the height of the discharged air.

[0006] Furthermore, multiple protective rods are installed on the outside of the air guide duct. The lower end of the protective rods is installed at the lower end of the annealing furnace body, and the upper end of the protective rods is connected to the air guide duct via a connecting rod.

[0007] Furthermore, the interceptor includes multiple annular interceptor plates installed at the upper end of the air guide tube. The annular interceptor plates have different sized holes, with the holes on the uppermost annular interceptor plates being larger. The air guide tube is equipped with a lifting rod, and a circular baffle is detachably connected to the lower end of the lifting rod. Multiple circular baffles are provided, and the diameters of the multiple circular baffles are different. Each time, the corresponding circular baffle can be selected according to the height of the air to be intercepted.

[0008] Furthermore, the lower end of the lifting rod is provided with an external thread, and the upper end of the circular baffle is equipped with a threaded sleeve. The lower end of the lifting rod can be connected to the threaded sleeve on the circular baffle via the thread.

[0009] Furthermore, the upper end of the lifting rod is equipped with multiple guide blocks, and the upper end of the air duct is equipped with multiple limiting slides, with one end of the guide block extending into the limiting slide.

[0010] The beneficial effects of this utility model are as follows: By mounting the coil frame on the outside of the air guide tube, air can be blown onto the wires on the coil frame through the conical air guide tube, thereby enabling the wires on the inner and outer sides of the coil frame to heat up and cool down simultaneously, achieving uniform heating and cooling, and thus ensuring the quality of the wires. The interceptor frame can intercept the upper end of the air guide tube, thereby preventing air from leaking out from above and ensuring that the air is completely discharged from the conical air guide tube, reducing heat energy waste. The interceptor frame can also intercept the height of the air discharge, preventing air from leaking out from the top when annealing shorter wires, thus reducing waste. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the high-toughness fastener wire spheroidizing annealing device described in this utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram showing the positional relationship between the guide block and the limiting slide rail described in this utility model; In the diagram, 1. Annealing furnace body; 2. Protective cover; 3. Air outlet pipe; 4. Air guide tube; 5. Conical air guide tube; 6. Interception frame; 7. Protective rod; 8. Connecting rod; 9. Circular interception plate; 10. Lifting rod; 11. Circular baffle; 12. Threaded sleeve; 13. Guide block; 14. Limiting slide. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0014] This utility model provides, for example Figure 1-3 The device shown is a high-toughness fastener wire spheroidizing annealing device, including an annealing furnace body 1, a protective cover 2 installed on the upper end of the annealing furnace body 1, multiple air outlet pipes 3 installed inside the annealing furnace body 1, the inlet end of the air outlet pipes 3 being connected to a fan on the annealing furnace body 1, multiple air guide tubes 4 installed inside the annealing furnace body 1, multiple conical air guide tubes 5 opened on the outside of the air guide tubes 4, the air outlet pipes 3 can blow air in from the bottom of the air guide tubes 4 and discharge it from the conical air guide tubes 5, and an intercepting frame 6 installed inside the air guide tubes 4 can intercept the height of the discharged air.

[0015] The process of spheroidizing annealing of wire rods using this device is as follows: The height of the interceptor frame 6 inside the air guide tube 4 is adjusted according to the height of the wire rod on the rack. With the lowest point of the interceptor frame 6 as the boundary, the conical air guide tube 5 below the interceptor frame 6 can discharge air, while the conical air guide tube 5 above the interceptor frame 6 cannot discharge air. The rack is then fitted onto the outside of the air guide tube 4, and the protective cover 2 is placed over it. By controlling the temperature inside the annealing furnace body 1, the wire rod can be spheroidized annealed. During spheroidizing annealing, air is blown into the air guide tube 4 through the air outlet 3, and then the air inside the air guide tube 4 can be discharged through the conical air guide tube 5, thereby blowing air onto the inner side of the wire rod. This ensures that the heating and cooling of the inner and outer sides of the wire rod are approximately the same, thereby improving the efficiency of spheroidizing annealing and ensuring the quality of the wire rod.

[0016] Refer to the instruction manual appendix Figure 1 Multiple protective rods 7 are installed on the outside of the air guide duct 4. The lower end of the protective rod 7 is installed inside the lower end of the annealing furnace body 1, and the upper end of the protective rod 7 is connected to the air guide duct 4 through the connecting rod 8. The protective rod 7 can prevent the plate frame from colliding with the air guide duct 4, thereby protecting the air guide duct 4.

[0017] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2The interceptor frame 6 includes multiple annular interceptor plates 9 installed at the upper end of the air guide tube 4. The annular interceptor plates 9 have different sized holes, with the holes on the uppermost annular interceptor plates 9 being larger. The air guide tube 4 is equipped with a lifting rod 10, and a circular baffle 11 is detachably connected to the lower end of the lifting rod 10. There are multiple circular baffles 11, and the diameters of the multiple circular baffles 11 are different. Each time, the corresponding circular baffle 11 can be selected according to the height of the air to be intercepted.

[0018] The process of intercepting air by the interceptor 6 is as follows: Select a circular baffle 11 of the corresponding size according to the size of the circular interceptor plate 9 required for the required interception height, and install the circular baffle 11 at the lower end of the lifting rod 10, so as to block the circular interceptor plate 9 and prevent air from flowing above the circular connecting plate 9.

[0019] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The lower end of the lifting rod 10 is provided with an external thread, and the upper end of the circular baffle 11 is equipped with a threaded sleeve 12. The lower end of the lifting rod 10 can be connected to the threaded sleeve 12 on the circular baffle 11 through the thread, which can facilitate the installation and disassembly of the circular baffle 11.

[0020] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 3 Multiple guide blocks 13 are installed on the upper end of the lifting rod 10, and multiple limiting slides 14 are installed on the upper end of the air duct 4. One end of the guide block 13 extends into the limiting slide 14. The lifting rod 10 can be limited by the guide block 13 and the limiting slide 14 to ensure the direction of movement of the lifting rod 10, and also to ensure the position of the circular baffle 11, so as to completely block the circular interceptor plate 9.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-toughness fastener wire spheroidizing annealing device, comprising an annealing furnace body (1), wherein a protective cover (2) is installed on the upper end of the annealing furnace body (1), and a plurality of air outlet pipes (3) are installed inside the annealing furnace body (1), wherein the inlet end of the air outlet pipes (3) is connected to a fan on the annealing furnace body (1), characterized in that, The annealing furnace body (1) is equipped with multiple air guide tubes (4), and multiple conical air guide pipes (5) are opened on the outside of the air guide tubes (4). The air outlet pipe (3) can blow air in from the bottom of the air guide tube (4) and discharge it from the conical air guide pipe (5). An interceptor (6) is installed in the air guide tube (4), and the interceptor (6) can intercept the height of the discharged air.

2. A high-ductility fastener wire spheronization annealing apparatus according to claim 1, wherein Multiple protective rods (7) are installed on the outside of the air guide tube (4). The lower end of the protective rod (7) is installed inside the lower end of the annealing furnace body (1), and the upper end of the protective rod (7) is connected to the air guide tube (4) through a connecting rod (8).

3. A high ductility fastener wire spheronization annealing apparatus as defined in claim 1, wherein, The interceptor frame (6) includes multiple annular interceptor plates (9) installed at the upper end of the air guide tube (4). The annular interceptor plates (9) have different sizes of circular holes, with the larger holes on the uppermost annular interceptor plates (9). The air guide tube (4) is equipped with a lifting rod (10). The lower end of the lifting rod (10) is detachably connected to a circular baffle (11). Multiple circular baffles (11) are provided, and the diameters of the multiple circular baffles (11) are different. Each time, the corresponding circular baffle (11) can be selected according to the height of the air to be intercepted.

4. A high-ductility fastener wire spheronization annealing apparatus according to claim 3, wherein The lower end of the lifting rod (10) is provided with an external thread, and the upper end of the circular baffle (11) is equipped with a threaded sleeve (12). The lower end of the lifting rod (10) can be connected to the threaded sleeve (12) on the circular baffle (11) by the thread.

5. A high-ductility fastener wire spheronization annealing apparatus as defined in claim 3, wherein The upper end of the lifting rod (10) is equipped with multiple guide blocks (13), and the upper end of the air duct (4) is equipped with multiple limiting slides (14). One end of the guide block (13) extends into the limiting slide (14).

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