Annealing device for molybdenum rod machining

Abstract

The utility model discloses an annealing device for molybdenum rod processing, which relates to the technical field of molybdenum rod processing, a furnace body comprises a furnace outer cavity and a furnace inner cavity positioned in the furnace outer cavity, a closed cavity is formed between the furnace outer cavity and the furnace inner cavity, and heating coils which are uniformly distributed around the outer wall of the furnace inner cavity are respectively arranged in the cavity. A furnace opening which is matched with the inner diameter of the furnace inner cavity and is correspondingly communicated with the furnace inner cavity is formed in the lower end face of the furnace outer cavity, and a bottom plate which vertically corresponds to the furnace body and can be adjusted in a lifting mode is arranged on the lower portion of the furnace body; a material tray which is used for placing a molybdenum rod and is used for controlling sealing opening and closing of the furnace mouth along with lifting of the bottom plate is arranged at the upper part of the bottom plate; according to the molybdenum rod annealing furnace, the annealing treatment efficiency of a molybdenum rod is greatly improved through efficient temperature rise or temperature reduction adjustment in the furnace body, and feeding and discharging operation of the molybdenum rod is greatly facilitated through lifting adjustment of the material tray.

Description

Technical Field

[0001] This utility model relates to the field of molybdenum rod processing technology, and in particular to an annealing device for molybdenum rod processing. Background Technology

[0002] In the production and processing of molybdenum rods, annealing is required to improve their quality. Annealing can significantly improve the mechanical properties of molybdenum rods, increase the plasticity of the material, eliminate processing stress, and optimize their grain structure.

[0003] Currently, the annealing process for molybdenum rods involves placing them in an annealing furnace. Most annealing furnaces used are resistance furnaces, atmosphere furnaces, or vacuum furnaces. However, these furnaces have the following drawbacks during use:

[0004] The existing annealing furnaces not only heat unevenly, but also lack appropriate cooling equipment when the molybdenum rods are cooled during the annealing process, often requiring natural cooling, which seriously affects the efficiency of the annealing process.

[0005] When annealing molybdenum rods, the rods are often placed horizontally on a tray inside the furnace. Because the rods are in partial contact with the tray, they cannot be heated evenly, which seriously affects the annealing quality of the rods.

[0006] When loading and unloading molybdenum rods, workers often need to reach into the furnace with their hands, which is not only inconvenient but also poses certain safety hazards.

[0007] Therefore, there is an urgent need for an annealing device for processing molybdenum rods that can overcome the above-mentioned shortcomings. Utility Model Content

[0008] In order to overcome the shortcomings of the prior art, this utility model discloses an annealing device for processing molybdenum rods. This utility model not only greatly improves the annealing efficiency of molybdenum rods by adjusting the efficient heating or cooling inside the furnace, but also greatly facilitates the loading and unloading of molybdenum rods by adjusting the lifting of the material tray.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An annealing device for processing molybdenum rods includes two corresponding supports, with a furnace body for annealing the molybdenum rods located between the two supports. The furnace body includes an outer furnace cavity and an inner furnace cavity located within the outer furnace cavity, forming a sealed cavity. Heating coils are uniformly distributed around the outer wall of the inner furnace cavity, and water-cooling pipes are uniformly distributed along the inner wall of the outer furnace cavity and interspersed with the heating coils. The lower end face of the outer furnace cavity has a furnace opening that matches the inner diameter of the inner furnace cavity and is correspondingly connected to the inner furnace cavity. The lower part of the furnace body has a base plate that corresponds to the upper and lower parts of the furnace body and can be adjusted for height. The upper part of the base plate has a material tray for placing molybdenum rods and controlling the sealing and opening / closing of the furnace opening as the base plate is raised and lowered. The upper part of the material tray has a material rack for vertically limiting the molybdenum rods.

[0011] Furthermore, several telescopic cylinders for adjusting the height of the base plate are evenly distributed on the lower part of the base plate.

[0012] Furthermore, the material rack includes support rods and pressure rods. Several mounting holes for vertically holding the support rods are evenly distributed on the upper surface of the material tray. The support rod body is provided with a pressure rod that is perpendicular to the support rod and can be adjusted up and down along the axis of the support rod.

[0013] Furthermore, the support rod is a threaded rod, with its lower end threadedly connected to the mounting hole, and its upper end penetrating one end of the pressure rod and threadedly engaging with it.

[0014] Furthermore, a second tray is provided on the upper part of the material tray, and several insertion holes corresponding one-to-one with the mounting holes on the upper surface of the material tray are provided on the lower surface of the second tray. The upper end of the support rod is provided with an insertion rod that is adapted to the insertion holes.

[0015] Furthermore, the upper side wall of the material pallet is provided with a reduced-diameter inclined surface surrounding the material pallet.

[0016] Furthermore, a primary sealing ring is provided on the lower side of the material tray sidewall, surrounding the material tray and fitting into the inner wall of the furnace opening.

[0017] Furthermore, the diameter of the bottom plate is adapted to the outer diameter of the furnace cavity, and a secondary sealing ring is provided on the upper surface of the bottom plate around the material tray. A sealing groove is provided on the outer side of the furnace opening around the furnace opening and adapted to the secondary sealing ring.

[0018] Furthermore, an exhaust pipe for discharging oxygen from the furnace cavity is provided on one side of the outer wall of the furnace cavity.

[0019] Furthermore, on the other side of the outer wall of the furnace outer cavity, there are gas concentration detectors for detecting the content of protective gas in the furnace inner cavity, and gas inlet pipes for injecting protective gas into the furnace inner cavity.

[0020] Compared with the prior art, the beneficial effects of this utility model are: by setting heating coils around the furnace cavity, the furnace cavity can be heated evenly and efficiently, providing strong support for the subsequent high-quality annealing treatment of molybdenum rods;

[0021] By setting water-cooling pipes that are interspersed with heating coils on the inner wall of the furnace cavity, the furnace cavity can be cooled evenly and effectively, greatly improving the annealing efficiency of molybdenum rods. It can also avoid contact with heating coils and prevent damage to the water-cooling pipes.

[0022] By setting up an adjustable base plate and material tray, the opening and closing of the furnace opening can be controlled by raising and lowering the base plate, which greatly facilitates the loading and unloading of molybdenum rods by the staff.

[0023] By setting up a material rack, the material tray and pressure bar abut against the upper and lower ends of the molybdenum rod, the molybdenum rod is vertically limited, so that there is a sufficient gap between adjacent molybdenum rods. This ensures that the molybdenum rod is heated evenly during the annealing process and also prevents the molybdenum rod from tipping over accidentally, thus effectively ensuring the de-ignition quality of the molybdenum rod.

[0024] By setting a second tray, the number of molybdenum rods that can be placed inside the furnace can be greatly increased, thereby improving the annealing efficiency of the molybdenum rods and saving energy.

[0025] By setting a reduced-diameter ramp, the material pallet can be accurately and efficiently inserted into the furnace opening as it rises with the base plate, ensuring an efficient and sealed connection between the material pallet and the furnace opening.

[0026] By setting primary and secondary sealing rings, the sealing performance at the furnace opening can be greatly improved, preventing the leakage of protective gas or the entry of oxygen into the furnace during the annealing process, thus providing a strong guarantee for the high-quality annealing treatment of molybdenum rods.

[0027] By setting up an air inlet pipe, an exhaust pipe, and a gas concentration detector, oxygen inside the furnace can be drawn in and discharged, protective gas can be injected into the furnace, and the content of protective gas inside the furnace can be monitored, providing strong support for the high-quality annealing treatment of molybdenum rods.

[0028] This invention not only greatly improves the annealing efficiency of molybdenum rods by adjusting the efficient heating or cooling inside the furnace, but also greatly facilitates the loading and unloading of molybdenum rods by adjusting the lifting of the material tray. This invention is simple to operate and easy to use, providing a strong guarantee for the efficient and high-quality annealing of molybdenum rods. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the material feeding state of this utility model;

[0030] Figure 2 This is a schematic diagram of the annealing furnace structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the base plate and material rack structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the annealing state of this utility model.

[0033] In the diagram: 1. Gas concentration detector; 2. Inlet pipe; 3. Exhaust pipe; 4. Furnace body; 5. Support; 6. Connecting rod; 7. Material rack; 8. Material tray; 9. Base plate; 10. Telescopic cylinder; 11. Limiting rod; 12. Furnace outer cavity; 13. Cavity; 14. Solenoid valve; 15. Furnace inner cavity; 16. Heating coil; 17. Water cooling pipeline; 18. Furnace opening; 19. Sealing groove; 20. Second tray; 21. Insertion hole; 22. Insertion rod; 23. Pressure rod; 24. Support rod; 25. Mounting hole; 26. Reduction slope; 27. Primary sealing ring; 28. Secondary sealing ring. Detailed Implementation

[0034] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0035] Please refer to the instruction manual appendix. Figure 1-4 This utility model provides a technical solution:

[0036] Example 1: An annealing device for processing molybdenum rods includes two corresponding supports 5, and a furnace body 4 for annealing molybdenum rods is provided between the two supports 5. Specifically, a connecting rod 6 is provided on the upper side of the opposite surface of the two supports 5, and the end of the connecting rod 6 is fixedly connected to the furnace body 4. The furnace body 4 can be suspended and supported by the two supports 5.

[0037] The furnace body 4 includes an outer furnace cavity 12 and an inner furnace cavity 15 located within the outer furnace cavity 12. A sealed cavity 13 is formed between the outer furnace cavity 12 and the inner furnace cavity 15. Heating coils 16 are evenly distributed around the outer wall of the inner furnace cavity 15, and water-cooling pipes 17 are evenly distributed along the inner wall of the outer furnace cavity 12 and interspersed with the heating coils 16. The ends of the heating coils 16 and the water-cooling pipes 17 extend out of the outer furnace cavity 12 and are connected to the temperature control equipment and the water-cooling equipment, respectively. The heating coils 16 and the water-cooling pipes 17 in the cavity 13 can be used to uniformly and efficiently heat up or cool down the inner furnace cavity 12.

[0038] The lower end face of the outer cavity 12 of the furnace is provided with a furnace opening 18 that matches the inner diameter of the inner cavity 15 of the furnace and communicates with the inner cavity 15. The lower part of the furnace body 4 is provided with a base plate 9 that corresponds to the upper and lower parts of the furnace body 4. Several telescopic cylinders 10 for adjusting the height of the base plate 9 are evenly distributed on the lower part of the base plate 9. Specifically, in order to avoid the furnace body 4 being too high, the telescopic cylinders 10 can be multi-stage telescopic cylinders. In order to ensure the stability of the telescopic cylinder rod 10, when the telescopic cylinder 10 is fixed to the ground by bolts, it is provided with a corresponding opening on the lower side of the opposite surface of the two supports 5. The limiting rod 11 is connected to the telescopic cylinder 10. The upper part of the base plate 9 is provided with a material tray 8 for placing molybdenum rods and controlling the sealing and opening of the furnace opening 18 as the base plate 9 rises and falls. The upper part of the material tray 8 is provided with a material rack 7 for vertically limiting the molybdenum rods. Specifically, the material rack 7 includes a support rod 24 and a pressure rod 23. Several mounting holes 25 for vertically holding the support rod 24 are evenly distributed on the upper surface of the material tray 8. The support rod 24 is provided with a pressure rod 23 that is perpendicular to the support rod 24 and can be adjusted up and down along the axial direction of the support rod 24.

[0039] When annealing molybdenum rods, the rods are first placed vertically on the material tray 8 with the support rod 24 attached. Then, the pressure rod 23 is pressed down on the upper end of the rod to achieve vertical positioning. The base plate 9 is then lifted by the telescopic cylinder 10, and the vertically placed rod enters the furnace cavity 15. After the material tray 8 is pressurized to the furnace opening 18, the temperature of the furnace cavity 15 is regulated by energizing the heating coil 16 through the temperature control device, thereby achieving the heating and heat preservation annealing process of the molybdenum rod. When cooling of the molybdenum rod is required, the temperature control device is turned off, and cooling liquid is injected into the water cooling pipe 17 using the water cooling device. The cooling liquid flow rate or temperature can be adjusted according to actual needs to achieve appropriate cooling of the furnace cavity 15, thereby ensuring that the molybdenum rod can undergo efficient and effective cooling and guaranteeing the annealing quality of the molybdenum rod.

[0040] In Example 2, to facilitate the installation of the material rack 7 and improve the stability of the material rack 7 in vertical support of the molybdenum rod, the support rod 24 is a threaded rod. The lower end of the support rod 24 is threadedly connected to the mounting hole 25, and the upper end of the support rod 24 passes through one end of the pressure rod 23 and is threadedly engaged with the pressure rod 23. In order to ensure the service life of the material rack 7 in high temperature environment, the material rack 7 is made of molybdenum, chromium-molybdenum alloy or tungsten material. These materials are not only resistant to high temperature and corrosion, but also have high strength and hardness.

[0041] In Example 3, during the annealing process of molybdenum rods, batch annealing is often performed. Due to the limited area of ​​the material tray 8, a second tray 20 is provided on the upper part of the material tray 8 to increase the number of molybdenum rods. Specifically, the lower surface of the second tray 20 has several insertion holes 21 that correspond one-to-one with the mounting holes 25 on the upper surface of the material tray 8. The upper end of the support rod 24 has an insertion rod 22 that matches the insertion holes 21. The insertion rod 22 and the support rod 24 are an integral structure. To facilitate the disassembly and installation of the pressure rod 23, no threads are provided on the rod body of the insertion rod 22. Furthermore, the diameter of the insertion rod 22 is smaller than the diameter of the support rod 24. By connecting the insertion rod 22 at the upper end of several support rods 24 with the insertion hole 21, the second tray 20 can be placed horizontally. In order to facilitate the vertical placement of molybdenum rods on the second tray 20, multiple mounting holes 25 for mounting the material rack 7 are also provided on the upper surface of the second tray 20. Not only can the material rack 7 be installed on the upper surface of the second tray 20 for vertical positioning of the molybdenum rods, but a third tray with the same structure as the second tray 20 can also be installed on the upper part of the second tray 20, thereby greatly increasing the number of molybdenum rods in the furnace body 4.

[0042] In Example 4, to ensure that the material tray 8 effectively seals the furnace opening 18, the diameter of the material tray 8 must be compatible with the furnace opening 18. This causes the edge of the material tray 8 to easily collide with the furnace opening 18 during the lifting and lowering of the base plate 9. In order to enable the material tray 8 to be precisely and efficiently inserted into the furnace opening 18 for a tight seal, a narrowing slope 26 is provided on the upper side wall of the material tray 8. The narrowing slope 26 can reduce the diameter of the upper end face of the material tray 8, and the narrowing slope 26 can guide the material tray 8 to be precisely and efficiently inserted into the furnace opening 18.

[0043] In Example 5, to ensure that the base plate 9 and the material tray 8 can effectively seal the furnace opening 18 and prevent the leakage of protective gas or the entry of oxygen into the furnace body 4, a primary sealing ring 27 is provided on the lower side wall of the material tray 8, surrounding the material tray 8 and fitting with the inner wall of the furnace opening 18. The primary sealing ring 27 is in interference fit with the inner wall of the furnace opening 18 to achieve primary sealing protection for the furnace opening 18. The diameter of the base plate 9 is adapted to the outer diameter of the furnace outer cavity 12. A secondary sealing ring 28 is provided on the upper surface of the base plate 9, surrounding the material tray 8. A sealing groove 19 is provided on the outer side of the furnace opening 18, surrounding the furnace opening 18 and fitting with the secondary sealing ring 28. The secondary sealing ring 28 is inserted into the sealing groove 19 to achieve secondary sealing protection for the furnace opening 18. Both the primary sealing ring 27 and the secondary sealing ring 28 are made of metal gaskets or flexible graphite. Both metal gaskets and flexible graphite have excellent high-temperature resistance while ensuring sealing effect.

[0044] In Example 6, during the annealing of molybdenum rods, the atmosphere inside the furnace body 4 has a significant impact on the surface oxidation of molybdenum. If there is a large amount of oxygen inside the furnace body 4, a layer of molybdenum oxide may form. In order to effectively extract and discharge oxygen inside the furnace body 4, an exhaust pipe 3 for discharging oxygen from the furnace cavity 15 is provided on one side of the outer wall of the furnace outer cavity 12. The exhaust pipe 3 is connected to a gas extraction device, which can be a gas pump. To prevent the oxidation of molybdenum rods during the annealing process, a gas concentration detector 1 for detecting the content of protective gas in the furnace cavity 15 and an inlet pipe 2 for injecting protective gas into the furnace cavity 15 are respectively provided on the other side of the outer wall of the furnace outer cavity 12. The protective gas is argon or nitrogen, and the corresponding gas concentration detector 1 is an argon or nitrogen detector. The inlet pipe 2 is connected to a gas injection device, which can be a compressor. To prevent gas from leaking from the inlet pipe 2 or the exhaust pipe 3 inside the furnace body 4, a solenoid valve 14 is provided on both the inlet pipe 2 and the exhaust pipe 3.

[0045] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. An annealing device for molybdenum rod processing, comprising two corresponding arranged supports (5), characterized in that: A furnace body (4) for annealing molybdenum rods is provided between the two supports (5). The furnace body (4) includes an outer furnace cavity (12) and an inner furnace cavity (15) located within the outer furnace cavity (12). A sealed cavity (13) is formed between the outer furnace cavity (12) and the inner furnace cavity (15). Heating coils (16) are uniformly distributed around the outer wall of the inner furnace cavity (15) and water-cooled pipes are uniformly distributed along the inner wall of the outer furnace cavity (12) and interspersed with the heating coils (16). (17) The lower end face of the furnace outer cavity (12) is provided with a furnace opening (18) that is compatible with the inner diameter of the furnace inner cavity (15) and is connected to the furnace inner cavity (15). The lower part of the furnace body (4) is provided with a bottom plate (9) that corresponds to the furnace body (4) and can be adjusted by lifting. The upper part of the bottom plate (9) is provided with a material tray (8) for placing molybdenum rods and controlling the sealing and opening / closing of the furnace opening (18) as the bottom plate (9) is lifted. The upper part of the material tray (8) is provided with a material rack (7) for vertically limiting the molybdenum rods.

2. The annealing apparatus for molybdenum rod processing according to claim 1, characterized by: Several telescopic cylinders (10) are evenly distributed on the lower part of the base plate (9) for adjusting the height of the base plate (9).

3. The annealing device for molybdenum rod machining according to claim 1, characterized in that: The material rack (7) includes a support rod (24) and a pressure rod (23). The upper surface of the material tray (8) has several mounting holes (25) evenly distributed for vertically mounting the support rod (24). The support rod (24) has a pressure rod (23) that is perpendicular to the support rod (24) and can be adjusted up and down along the axial direction of the support rod (24).

4. The annealing apparatus for molybdenum rod processing according to claim 3, characterized by: The support rod (24) is a threaded rod. The lower end of the support rod (24) is threadedly connected to the mounting hole (25), and the upper end of the support rod (24) passes through one end of the pressure rod (23) and is threadedly engaged with the pressure rod (23).

5. The annealing apparatus for molybdenum rod processing according to claim 4, characterized by: The material tray (8) is provided with a second tray (20) on the upper part. The lower surface of the second tray (20) is provided with several insertion holes (21) that correspond one-to-one with the mounting holes (25) on the upper surface of the material tray (8). The upper end of the support rod (24) is provided with an insertion rod (22) that is compatible with the insertion holes (21).

6. The annealing apparatus for processing molybdenum rods according to claim 3, characterized in that: The upper side of the side wall of the material pallet (8) is provided with a reduced-diameter inclined surface (26) surrounding the material pallet (8).

7. The annealing apparatus for molybdenum rod processing according to claim 1, characterized by: The lower side of the material tray (8) is provided with a primary sealing ring (27) that surrounds the material tray (8) and matches the inner wall of the furnace opening (18).

8. The annealing apparatus for molybdenum rod processing according to claim 1, characterized by: The diameter of the bottom plate (9) is matched with the outer diameter of the furnace outer cavity (12). The upper surface of the bottom plate (9) is provided with a secondary sealing ring (28) surrounding the material tray (8). The outer side of the furnace opening (18) is provided with a sealing groove (19) surrounding the furnace opening (18) and matched with the secondary sealing ring 28.

9. An annealing apparatus for processing molybdenum rods according to claim 1, characterized in that: An exhaust pipe (3) is provided on one side of the outer wall of the furnace outer cavity (12) for discharging oxygen from the furnace inner cavity (15).

10. The annealing apparatus for molybdenum rod processing according to claim 9, characterized by: On the other side of the outer wall of the furnace outer cavity (12), there is a gas concentration detector (1) for detecting the content of protective gas in the furnace inner cavity (15) and an air inlet pipe (2) for injecting protective gas into the furnace inner cavity (15).

Images