A high-temperature sintering device for molybdenum top head

Abstract

The utility model discloses a kind of molybdenum top head high-temperature sintering devices, including base, the base is fixedly connected with sintering furnace, heating wire is fixedly connected in the sintering furnace, support assembly is provided in the sintering furnace, the sintering furnace side is fixedly connected with connecting pipe, vacuum assembly is provided in one end of the connecting pipe, water pipe is fixedly connected with the other side of the sintering furnace, circulation assembly is provided in one end of the water pipe, preheating box is fixedly connected on the water pipe, box door is rotatably connected on the preheating box, the sintering furnace side is rotatably connected with furnace door, the utility model has the advantages that more molybdenum top head blank can be processed simultaneously by support assembly, and can be adjusted according to molybdenum top head blank size.

Description

Technical Field

[0001] This utility model relates to the field of molybdenum mandrel production technology, and more specifically, to a high-temperature sintering apparatus for molybdenum mandrels. Background Technology

[0002] Molybdenum mandrels are molybdenum-based alloy products used in the hot rolling piercing process of seamless steel pipes. They belong to the category of titanium-zirconium-carbon-molybdenum alloy materials. Their production requires processes such as mixing, forming, sintering, and post-processing. Among these processes, sintering requires the use of a high-temperature sintering device to sinter the green billet in order to obtain molybdenum mandrels with high density and high strength. However, existing technologies have some problems: existing high-temperature sintering devices for molybdenum mandrels usually require manual placement of the molybdenum mandrel blanks into the sintering furnace during sintering, which results in low placement efficiency, small processing quantities at the same time, resource waste, and low production efficiency. Therefore, we propose a high-temperature sintering device for molybdenum mandrels. Utility Model Content

[0003] One objective of this invention is to provide a new technical solution for a high-temperature sintering device for a molybdenum mandrel.

[0004] According to a first aspect of this utility model, a high-temperature sintering device for a molybdenum mandrel is provided, comprising a base, a sintering furnace fixedly connected to the base, a heating wire fixedly connected inside the sintering furnace, a support assembly provided inside the sintering furnace, a connecting pipe fixedly connected to one side of the sintering furnace, a vacuum assembly provided at one end of the connecting pipe, a water pipe fixedly connected to the other side of the sintering furnace, a circulation assembly provided at one end of the water pipe, a preheating box fixedly connected to the water pipe, a box door rotatably connected to the preheating box, and a furnace door rotatably connected to one side of the sintering furnace.

[0005] Optionally, the support assembly includes a fixed base, which is fixedly connected to the inner wall of the sintering furnace, and rollers are rotatably connected to the fixed base.

[0006] Optionally, the support assembly further includes a support frame with a slide rail, the rollers being rotatably connected within the slide rail, a support block being fixedly connected to the support frame, and a support plate being detachably connected to the support block.

[0007] Optionally, multiple sets of support blocks are provided, and the multiple sets of support blocks are evenly fixed on the support frame. A fixing pin is fixedly connected to the support plate, and a fixing hole is opened on the support block, and the fixing pin is engaged in the fixing hole.

[0008] Optionally, the vacuum assembly includes a diffusion pump, which is fixedly connected to the connecting pipe. One end of the diffusion pump is fixedly connected to a Roots pump, and the other end of the Roots pump is fixedly connected to a mechanical pump.

[0009] Optionally, the circulation component includes a heat dissipation pipe, which is fixedly connected inside the preheating box. One end of the heat dissipation pipe is fixedly connected to a water pipe, and the other end of the heat dissipation pipe is fixedly connected to a water pump. One end of the water pump is connected to a radiator, and one end of the radiator is fixedly connected to a water tank, which is connected to the sintering furnace.

[0010] According to one embodiment of this disclosure, by setting a support assembly, after the molybdenum mandrel blank is placed on the support plate, the support frame is pushed into the device by aligning the groove of the support frame with the roller and then the furnace door is closed, so that the molybdenum mandrel blank on the support plate can be sintered. The support assembly can quickly realize loading and unloading, improving production efficiency. At the same time, the support assembly is set with multiple sets of support blocks, which can adjust the spacing of the support frame according to the molybdenum mandrel blank. Furthermore, the device also fixes the support plate by engaging the fixing pin on the support plate with the fixing hole on the support block. The structure is simple and easy to adjust, while avoiding the molybdenum mandrel blank from falling and being damaged during loading and unloading.

[0011] This invention features an S-shaped heat dissipation pipe fixed to the bottom of the preheating box, which transfers heat into the box. The outer layer of the preheating box is made of heat-insulating material, while the inner layer is made of heat-conducting material, allowing heat to quickly fill the box. This enables the molybdenum mandrel blank to be placed in the preheating box for initial preheating, controlling the heating rate of the blank, avoiding severe oxidation caused by direct exposure to high temperatures, reducing material loss, and effectively utilizing the heat generated in the sintering furnace to improve energy efficiency.

[0012] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a high-temperature sintering device for a molybdenum mandrel in one embodiment; Figure 2 This is a cross-sectional view of a sintering furnace in a high-temperature sintering apparatus for a molybdenum mandrel, as described in one embodiment. Figure 3 This is a cross-sectional view of a support block of a high-temperature sintering apparatus for a molybdenum mandrel in one embodiment; Figure 4 This is a schematic diagram of a diffusion pump in a high-temperature sintering apparatus for a molybdenum mandrel in one embodiment. Figure 5 This is a schematic diagram of the preheating box of a high-temperature sintering apparatus for a molybdenum mandrel in one embodiment; Figure 6This is a cross-sectional view of the preheating box of a high-temperature sintering apparatus for a molybdenum mandrel in one embodiment.

[0015] The diagram shows the following components: 1. Base; 2. Sintering furnace; 3. Heating wire; 4. Support assembly; 41. Fixing seat; 42. Roller; 43. Support frame; 44. Support block; 45. Support plate; 46. Fixing pin; 5. Connecting pipe; 6. Vacuum assembly; 61. Diffusion pump; 62. Roots pump; 63. Mechanical pump; 7. Water pipe; 8. Circulation assembly; 81. Heat dissipation pipe; 82. Water pump; 83. Radiator; 84. Water tank; 9. Preheating box; 10. Box door; 11. Furnace door. Detailed Implementation

[0016] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0017] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0018] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0019] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0020] like Figure 1-6 As shown, a high-temperature sintering device for a molybdenum mandrel includes a base 1 made of stainless steel. Its main function is to support the entire device and ensure that the device remains stable during operation.

[0021] Furthermore, a sintering furnace 2 is fixedly connected to the base 1. The sintering furnace 2 adopts a double-layer structure, with the inner layer being a high-temperature resistant material and the outer layer being a heat insulation layer, which can effectively reduce heat loss. At the same time, the double-layer structure can be used in conjunction with a water cooling system to achieve rapid temperature adjustment and improve production efficiency.

[0022] Furthermore, a heating wire 3 is fixedly connected inside the sintering furnace 2. The heating wire 3 is made of molybdenum wire, which is wound around the inside of the sintering furnace 2 for direct radiant heating.

[0023] Furthermore, a support assembly 4 is provided inside the sintering furnace 2. The support assembly 4 includes a fixed seat 41, which is fixedly connected to the inner wall of the sintering furnace 2. Rollers 42 are rotatably connected to the fixed seat 41.

[0024] Specifically, the support assembly 4 also includes a support frame 43, on which a slide rail is provided, and a roller 42 is rotatably connected in the slide rail. A support block 44 is fixedly connected to the support frame 43, and a support plate 45 is detachably connected to the support block 44.

[0025] Furthermore, multiple sets of support blocks 44 are provided, and multiple sets of support blocks 44 are evenly fixed on the support frame 43. A fixing pin 46 is fixedly connected to the support plate 45, and a fixing hole is opened on the support block 44, and the fixing pin 46 is engaged in the fixing hole.

[0026] Specifically, after placing the molybdenum mandrel blank on the support plate 45, the support frame 43 is aligned with the roller 42, and then the support frame 43 is pushed into the device and the furnace door 11 is closed to sinter the molybdenum mandrel blank on the support plate 45. The support assembly 4 allows for quick loading and unloading, improving production efficiency. The support assembly 4 is equipped with multiple sets of support blocks 44, which can adjust the spacing of the support frame 43 according to the molybdenum mandrel blank. The device also fixes the support plate 45 by engaging the fixing pins 46 on the support plate 45 with the fixing holes on the support blocks 44. The structure is simple and easy to adjust, while preventing the support plate 45 from slipping during loading and unloading, which could cause the molybdenum mandrel blank to fall and be damaged.

[0027] Furthermore, a connecting pipe 5 is fixedly connected to one side of the sintering furnace 2, and a vacuum component 6 is provided at one end of the connecting pipe 5. The vacuum component 6 includes a diffusion pump 61, which is fixedly connected to the connecting pipe 5. A roots pump 62 is fixedly connected to one end of the diffusion pump 61, and a mechanical pump 63 is fixedly connected to one end of the roots pump 62.

[0028] Specifically, the mechanical pump 63 (primary pump), as the system inlet stage, directly removes air from the atmosphere and volatile substances generated during the sintering process, providing the starting conditions for the Roots pump 62. The Roots pump 62 (booster pump) generates an airflow boosting effect through high-speed rotor rotation, further reducing the pressure and increasing the pumping rate based on the mechanical pump 63, thus reducing the workload of the diffusion pump 61. The diffusion pump 61 (high vacuum pump) uses a high-speed vapor flow (usually silicone oil or mercury vapor) to capture gas molecules and guide them to the pump inlet, ultimately pumping the system to an ultra-high vacuum, meeting the requirements of the sintering process for a pure environment. The above vacuum manufacturing process is a mature existing technology, which is believed to be well understood by those skilled in the art, and will not be elaborated further here.

[0029] Furthermore, a water pipe 7 is fixedly connected to the other side of the sintering furnace 2, a circulation component 8 is provided at one end of the water pipe 7, and a preheating box 9 is fixedly connected to the water pipe 7.

[0030] Furthermore, the circulation component 8 includes a heat dissipation pipe 81, which is fixedly connected inside the preheating box 9. One end of the heat dissipation pipe 81 is fixedly connected to the water pipe 7, and the other end of the heat dissipation pipe 81 is fixedly connected to a water pump 82. One end of the water pump 82 is connected to a radiator 83, and one end of the radiator 83 is fixedly connected to a water tank 84, which is connected to the sintering furnace 2.

[0031] Specifically, the cooling water in the water tank 84 enters the jacket of the sintering furnace 2 to absorb the heat inside, then flows into the heat dissipation pipe 81 for initial heat dissipation, and then flows into the radiator 83 for further heat dissipation. After heat dissipation, it flows back into the water tank 84 for recycling. The above cooling process is a mature existing technology, which is well understood by those skilled in the art, so it will not be described in detail here. The heat dissipation pipe 81 is S-shaped and is fixed at the bottom of the preheating box 9, which can transfer heat into the preheating box 9. The outer layer of the preheating box 9 is made of heat-insulating material and the inner layer is made of heat-conducting material, which can quickly fill the preheating box 9 with heat. Thus, the molybdenum mandrel blank can be placed in the preheating box 9 for initial preheating. The heating rate of the blank can be controlled to avoid severe oxidation caused by direct exposure to high temperature environment, reduce material loss, and effectively utilize the heat generated in the sintering furnace 2 to improve energy utilization.

[0032] Furthermore, a door 10 is rotatably connected to the preheating box 9, which is used to seal the preheating box 9. A furnace door 11 is rotatably connected to one side of the sintering furnace 2, which is used to seal the sintering furnace 2.

[0033] The aforementioned high-temperature sintering apparatus for molybdenum mandrels, by setting a support assembly 4, allows for the sintering of the molybdenum mandrel blank on the support plate 45 after the molybdenum mandrel blank is placed on the support plate 45. This is achieved by aligning the sliding groove of the support frame 43 with the roller 42, pushing the support frame 43 into the apparatus, and then closing the furnace door 11. The support assembly 4 enables rapid loading and unloading, improving production efficiency. Furthermore, the support assembly 4 is equipped with multiple sets of support blocks 44, allowing for adjustment of the spacing of the support frame 43 according to the molybdenum mandrel blank. The apparatus also secures the support plate 45 by engaging the fixing pins 46 on the support plate 45 with the fixing holes on the support blocks 44. This design is simple, easy to adjust, and prevents the support plate 45 from slipping during loading and unloading, thus avoiding damage to the molybdenum mandrel blank.

[0034] This utility model features an S-shaped heat dissipation pipe 81 fixed to the bottom of the preheating box 9, which can transfer heat into the preheating box 9. The outer layer of the preheating box 9 is made of heat-insulating material, and the inner layer is made of heat-conducting material, which can quickly fill the preheating box 9 with heat. Thus, the molybdenum mandrel blank can be placed in the preheating box 9 for preliminary preheating. The heating rate of the blank can be controlled, avoiding severe oxidation caused by direct exposure to high temperature environment, reducing material loss, and effectively utilizing the heat generated in the sintering furnace 2 to improve energy utilization.

[0035] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A high-temperature sintering apparatus for a molybdenum mandrel, comprising a base (1), characterized in that: A sintering furnace (2) is fixedly connected to the base (1). A heating wire (3) is fixedly connected inside the sintering furnace (2). A support assembly (4) is provided inside the sintering furnace (2). A connecting pipe (5) is fixedly connected to one side of the sintering furnace (2). A vacuum assembly (6) is provided at one end of the connecting pipe (5). A water pipe (7) is fixedly connected to the other side of the sintering furnace (2). A circulation assembly (8) is provided at one end of the water pipe (7). A preheating box (9) is fixedly connected to the water pipe (7). A box door (10) is rotatably connected to the preheating box (9). A furnace door (11) is rotatably connected to one side of the sintering furnace (2).

2. The high-temperature sintering apparatus for a molybdenum mandrel according to claim 1, characterized in that: The support assembly (4) includes a fixed seat (41), which is fixedly connected to the inner wall of the sintering furnace (2), and a roller (42) is rotatably connected to the fixed seat (41).

3. The high-temperature sintering apparatus for a molybdenum mandrel according to claim 2, characterized in that: The support assembly (4) further includes a support frame (43), on which a slide rail is provided, and the roller (42) is rotatably connected in the slide rail. A support block (44) is fixedly connected to the support frame (43), and a support plate (45) is detachably connected to the support block (44).

4. The high-temperature sintering apparatus for a molybdenum mandrel according to claim 3, characterized in that: The support block (44) is provided in multiple sets, and the multiple sets of support blocks (44) are evenly fixed on the support frame (43). The support plate (45) is fixedly connected with a fixing pin (46). The support block (44) is provided with a fixing hole, and the fixing pin (46) is engaged in the fixing hole.

5. The high-temperature sintering apparatus for a molybdenum mandrel according to claim 1, characterized in that: The vacuum assembly (6) includes a diffusion pump (61), which is fixedly connected to the connecting pipe (5). One end of the diffusion pump (61) is fixedly connected to a Roots pump (62), and the other end of the Roots pump (62) is fixedly connected to a mechanical pump (63).

6. The high-temperature sintering apparatus for a molybdenum mandrel according to claim 1, characterized in that: The circulation component (8) includes a heat dissipation pipe (81), which is fixedly connected to the preheating box (9). One end of the heat dissipation pipe (81) is fixedly connected to a water pipe (7), and the other end of the heat dissipation pipe (81) is fixedly connected to a water pump (82). One end of the water pump (82) is connected to a radiator (83), and one end of the radiator (83) is fixedly connected to a water tank (84). The water tank (84) is connected to the sintering furnace (2).

Images