Pre-sintering device for gradient hard alloy bar preparation

Abstract

The utility model relates to the technical field of gradient hard alloy bar preparation, and discloses a presintering device for gradient hard alloy bar preparation, which comprises a furnace body, a bin gate is hinged to the left end of the furnace body, a partition plate is fixedly arranged on the inner wall of the furnace body, and a gas control mechanism is arranged above the furnace body. A material conveying mechanism is arranged in the furnace body, and the gas control mechanism comprises a gas outlet part and an adjusting part. The moving seat drives the connecting rod and the driving plate to move, the driving plate drives the connecting frame and the adjusting plate to deflect when moving, the gas flow rate of inert gas in the connecting bin can be controlled by changing the deflection angle of the adjusting plate, the atmosphere condition in the sintering process can be optimized, and the sintering reaction is more sufficient and uniform; the flow rate of inert gas can be flexibly controlled through deflection of the adjusting plate, so that accurate adjustment of the sintering atmosphere is achieved, the requirements of different sintering materials and technologies for atmosphere conditions are different, and the requirements of different sintering technologies can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of gradient cemented carbide rods, in particular to a pre-sintering device for preparation of gradient cemented carbide rods. Background Art

[0002] Gradient carbide rods are carbide rods with a gradient structure produced through a specific process. The structure of this alloy rod gradually changes from the surface to the inside, making the performance of the alloy different in different parts, thus meeting the use requirements in various complex environments.

[0003] In the pre-sintering process of gradient carbide rods, inert gases (such as argon) or reducing gases are often introduced to precisely control the atmosphere in the furnace to ensure the smooth progress of the sintering process. However, the current inert gas introduction mechanism has shown certain limitations when facing the diverse sintering process requirements, that is, it is difficult to flexibly adapt to the differentiated requirements of different sintering processes for the specific conditions of inert gas.

[0004] Therefore, a pre-sintering device for preparing gradient cemented carbide rods is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide a pre-sintering device for preparing gradient cemented carbide rods, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a pre-sintering device for preparing gradient cemented carbide rods, comprising a furnace body, a door hingedly provided at the left end of the furnace body, a partition fixedly provided on the inner wall of the furnace body, a gas control mechanism provided above the furnace body, and a material conveying mechanism provided inside the furnace body;

[0007] The gas control mechanism includes a gas outlet portion and a regulating portion;

[0008] The material conveying mechanism includes a driving part and a heating part.

[0009] Preferably, the gas outlet includes a gas compressor, which is fixedly connected to the top surface of the furnace body. A compressed gas pipe is provided at the left end of the gas compressor, and the gas compressor and the compressed gas pipe are connected to each other. A connecting bin is fixedly provided on the bottom surface of the compressed gas pipe, and the compressed gas pipe and the connecting bin are connected to each other. The gas compressor guides the inert gas into the compressed gas pipe.

[0010] Preferably, an air outlet pipe is provided inside the furnace body, the upper end of the air outlet pipe passes through the furnace body and extends to the top of the furnace body, the air outlet pipe is fixedly connected to the connecting chamber, the air outlet pipe and the connecting chamber are interconnected, and a plurality of air outlet holes are evenly provided on the bottom surface of the air outlet pipe, and the inert gas then enters the air outlet pipe from the connecting chamber to transport the inert gas into the furnace body.

[0011] Preferably, the adjustment part includes an adjustment plate, which is located inside the connecting bin and rotatably connected to the inner wall of the connecting bin. Connecting frames are fixedly provided on the front and rear sides of the adjustment plate. The other end of the connecting frame passes through the connecting bin and is connected to the connecting bin bearing. An arc frame is fixedly provided on the top surface of the furnace body. There are two arc frames provided in the front and back. The upper end of the connecting frame is located inside the arc frame and is slidably connected to the inner wall of the arc frame. The deflection of the adjustment plate can control the flow rate of the inert gas, thereby realizing precise adjustment of the sintering atmosphere.

[0012] Preferably, a driving plate is hingedly provided at the upper end of the connecting frame, and two driving plates are provided at the front and rear ends. A connecting rod is provided between the front and rear driving plates, and the front and rear ends of the connecting rod are respectively connected to the bearings close to the driving plates, and a movable seat is provided on the outer side of the connecting rod.

[0013] Preferably, a placement plate is provided under the movable seat, the bottom surface of the placement plate is fixedly connected to the furnace body, a positioning groove is provided on the top surface of the placement plate, the lower end of the movable seat is located inside the positioning groove and is slidingly connected to the inner wall of the positioning groove, a first cylinder is fixedly provided on the top surface of the placement plate, the output shaft of the first cylinder is fixedly connected to the movable seat, and the first cylinder drives the movable seat to move.

[0014] Preferably, the driving part includes a discharge rack, which is located inside the furnace body, a second cylinder is fixedly provided on the right side of the partition, the output shaft of the second cylinder passes through the partition and is fixedly connected to the discharge rack, a slide rail is fixedly provided on the inner wall of the furnace body, pulleys are installed on the front and rear sides of the discharge rack, the pulleys are located inside the slide rail and are slidably connected to the inner wall of the slide rail, the second cylinder drives the discharge rack to move, thereby realizing the automated operation of the alloy powder sintering process.

[0015] Preferably, the heating part includes a placement seat, which is fixedly connected to the inner wall of the furnace body. An electric heating tube is installed inside the placement seat. The top surface of the electric heating tube is in contact with the bottom surface of the discharge rack. The electric heating tube is in contact with the bottom surface of the discharge rack, which can ensure that the alloy powder is heated evenly during the sintering process.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the pre-sintering device for preparing gradient cemented carbide rods,

[0017] 1) The connecting rod and the driving plate are driven to move by the moving seat. When the driving plate moves, the connecting frame and the adjustment plate are driven to deflect. Changing the deflection angle of the adjustment plate can control the gas flow rate of the inert gas in the connecting chamber, which can optimize the atmosphere conditions during the sintering process and make the sintering reaction more sufficient and uniform. The deflection of the adjustment plate can flexibly control the flow rate of the inert gas, thereby realizing precise adjustment of the sintering atmosphere. Different sintering materials and processes have different requirements for atmosphere conditions, which can meet the needs of different sintering processes.

[0018] 2) The second cylinder drives the unloading rack to move, realizing the automation of the alloy powder sintering process, reducing manual intervention and improving production efficiency. When the unloading rack moves, the pulley slides in the slide rail to ensure that the unloading rack can be accurately moved to the top of the electric heating tube, ensuring the accuracy of heating and sintering. The electric heating tube contacts the bottom surface of the unloading rack, which can ensure that the alloy powder is heated evenly during the sintering process, avoiding sintering quality problems caused by uneven temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a partial three-dimensional view of the structure of the utility model;

[0021] Figure 3 This is a three-dimensional view of the gas control mechanism of the utility model;

[0022] Figure 4 This is a partial three-dimensional view of the gas control mechanism of the utility model;

[0023] Figure 5 This is a three-dimensional view of the material conveying mechanism of the present utility model.

[0024] In the figure: 1 furnace body, 2 warehouse door, 3 partition, 4 gas control mechanism, 41 gas compressor, 42 compressed gas pipe, 43 connecting warehouse, 44 gas outlet pipe, 45 adjustment plate, 46 connecting frame, 47 arc frame, 48 drive plate, 49 connecting rod, 410 moving seat, 411 placement plate, 412 first cylinder, 5 material conveying mechanism, 51 discharge rack, 52 second cylinder, 53 slide rail, 54 pulley, 55 placement seat, 56 electric heating pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0026] See also Figure 1-Figure 5 The utility model provides a technical solution: a pre-sintering device for preparing gradient cemented carbide rods, comprising a furnace body 1, a door 2 hingedly provided at the left end of the furnace body 1, a partition 3 fixedly provided on the inner wall of the furnace body 1, a gas control mechanism 4 provided above the furnace body 1, and a material conveying mechanism 5 provided inside the furnace body 1;

[0027] The gas control mechanism 4 includes a gas outlet portion and a regulating portion;

[0028] The material conveying mechanism 5 includes a driving part and a heating part.

[0029] The gas outlet part includes a gas compressor 41, which is fixedly connected to the top surface of the furnace body 1. A compressed gas pipe 42 is provided at the left end of the gas compressor 41. The gas compressor 41 and the compressed gas pipe 42 are connected to each other. A connecting bin 43 is fixedly provided on the bottom surface of the compressed gas pipe 42. The compressed gas pipe 42 and the connecting bin 43 are connected to each other.

[0030] An air outlet pipe 44 is provided inside the furnace body 1. The upper end of the air outlet pipe 44 passes through the furnace body 1 and extends to the top of the furnace body 1. The air outlet pipe 44 is fixedly connected to the connecting chamber 43. The air outlet pipe 44 and the connecting chamber 43 are interconnected. A plurality of air outlet holes are evenly arranged on the bottom surface of the air outlet pipe 44.

[0031] The adjustment part includes an adjustment plate 45, which is located inside the connecting bin 43 and is rotatably connected to the inner wall of the connecting bin 43. Connecting frames 46 are fixedly provided on the front and rear sides of the adjustment plate 45. The other end of the connecting frame 46 passes through the connecting bin 43 and is connected to the bearing of the connecting bin 43. An arc frame 47 is fixedly provided on the top surface of the furnace body 1. There are two arc frames 47 in the front and back. The upper end of the connecting frame 46 is located inside the arc frame 47 and is slidably connected to the inner wall of the arc frame 47.

[0032] A driving plate 48 is hingedly provided at the upper end of the connecting frame 46. There are two driving plates 48 at the front and rear ends. A connecting rod 49 is provided between the front and rear driving plates 48. The front and rear ends of the connecting rod 49 are respectively connected to the bearings of the driving plates 48 close to each other. A movable seat 410 is provided on the outer side of the connecting rod 49.

[0033] A placement plate 411 is provided below the movable seat 410. The bottom surface of the placement plate 411 is fixedly connected to the furnace body 1. A positioning groove is provided on the top surface of the placement plate 411. The lower end of the movable seat 410 is located inside the positioning groove and is slidingly connected to the inner wall of the positioning groove. A first cylinder 412 is fixedly provided on the top surface of the placement plate 411. The output shaft of the first cylinder 412 is fixedly connected to the movable seat 410.

[0034] Furthermore, in this embodiment, the gas compressor 41 guides the inert gas into the compressed gas pipe 42, and the inert gas then enters the gas outlet pipe 44 from the connecting chamber 43, transporting the inert gas into the furnace body 1. The first cylinder 412 is started, and the first cylinder 412 drives the movable seat 410 to move. The movable seat 410 drives the connecting rod 49 and the driving plate 48 to move. When the driving plate 48 moves, it drives the connecting frame 46 and the adjustment plate 45 to deflect. Changing the deflection angle of the adjustment plate 45 can control the gas flow rate of the inert gas in the connecting chamber 43.

[0035] Furthermore, in this embodiment, the connecting rod 49 and the driving plate 48 are driven to move by the movable seat 410. When the driving plate 48 moves, the connecting frame 46 and the adjusting plate 45 are driven to deflect. By changing the deflection angle of the adjusting plate 45, the gas flow rate of the inert gas in the connecting chamber 43 can be controlled, and the atmosphere conditions during the sintering process can be optimized to make the sintering reaction more sufficient and uniform. The deflection of the adjusting plate 45 can flexibly control the flow rate of the inert gas, thereby achieving precise adjustment of the sintering atmosphere. Different sintering materials and processes have different requirements for atmosphere conditions, and the needs of different sintering processes can be met. Example

[0036] See also Figure 1-Figure 5 , and on the basis of Example 1, it is further obtained that: the driving part includes a discharge rack 51, the discharge rack 51 is located inside the furnace body 1, a second cylinder 52 is fixedly provided on the right side of the partition 3, the output shaft of the second cylinder 52 passes through the partition 3 and is fixedly connected to the discharge rack 51, a slide rail 53 is fixedly provided on the inner wall of the furnace body 1, and pulleys 54 are installed on the front and rear sides of the discharge rack 51, the pulley 54 is located inside the slide rail 53 and is slidably connected to the inner wall of the slide rail 53.

[0037] The heating part includes a placement seat 55 , which is fixedly connected to the inner wall of the furnace body 1 . An electric heating tube 56 is installed inside the placement seat 55 , and the top surface of the electric heating tube 56 contacts the bottom surface of the material rack 51 .

[0038] Furthermore, in this embodiment, the alloy powder to be sintered is placed in the discharge rack 51, and the second cylinder 52 drives the discharge rack 51 to move. When the discharge rack 51 moves, it drives the pulley 54 to slide in the slide rail 53, so that the discharge rack 51 moves to the top of the electric heating tube 56. The electric heating tube 56 contacts the bottom surface of the discharge rack 51, and the alloy powder in the discharge rack 51 is heated and sintered.

[0039] Furthermore, this embodiment drives the discharge rack 51 to move by the second cylinder 52, thereby realizing the automated operation of the alloy powder sintering process, reducing manual intervention, and improving production efficiency. When the discharge rack 51 moves, the pulley 54 slides in the slide rail 53, ensuring that the discharge rack 51 can be accurately moved to directly above the electric heating tube 56, ensuring the accuracy of heating and sintering. The electric heating tube 56 is in contact with the bottom surface of the discharge rack 51, which can ensure that the alloy powder is heated evenly during the sintering process, avoiding sintering quality problems caused by uneven temperature.

[0040] When in use, the alloy powder to be sintered is placed in the discharge rack 51, and the second cylinder 52 drives the discharge rack 51 to move. When the discharge rack 51 moves, it drives the pulley 54 to slide in the slide rail 53, so that the discharge rack 51 moves to the top of the electric heating tube 56. The electric heating tube 56 contacts the bottom surface of the discharge rack 51 to heat and sinter the alloy powder in the discharge rack 51. During the sintering process, the gas compressor 41 guides the inert gas into the compressed gas pipe 42, and the inert gas then enters the outlet pipe 44 from the connecting bin 43 to transport the inert gas into the furnace body 1. The first cylinder 412 is started, and the first cylinder 412 drives the movable seat 410 to move. The movable seat 410 drives the connecting rod 49 and the driving plate 48 to move. When the driving plate 48 moves, it drives the connecting rack 46 and the adjustment plate 45 to deflect. Changing the deflection angle of the adjustment plate 45 can control the gas flow rate of the inert gas in the connecting bin 43.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-sintering device for preparing gradient cemented carbide rods, comprising a furnace body (1), characterized in that: A door (2) is hingedly provided at the left end of the furnace body (1), a partition (3) is fixedly provided on the inner wall of the furnace body (1), a gas control mechanism (4) is provided above the furnace body (1), and a material conveying mechanism (5) is provided inside the furnace body (1); The gas control mechanism (4) includes a gas outlet portion and a regulating portion; The material conveying mechanism (5) comprises a driving part and a heating part.

2. A pre-sintering device for preparing a gradient cemented carbide rod according to claim 1, characterized in that: The gas outlet portion includes a gas compressor (41), the gas compressor (41) is fixedly connected to the top surface of the furnace body (1), a compressed gas pipe (42) is provided at the left end of the gas compressor (41), the gas compressor (41) and the compressed gas pipe (42) are communicated with each other, and a connecting chamber (43) is fixedly provided on the bottom surface of the compressed gas pipe (42), and the compressed gas pipe (42) and the connecting chamber (43) are communicated with each other.

3. A pre-sintering device for preparing a gradient cemented carbide rod according to claim 2, characterized in that: An air outlet pipe (44) is provided inside the furnace body (1), the upper end of the air outlet pipe (44) passes through the furnace body (1) and extends to the top of the furnace body (1), the air outlet pipe (44) is fixedly connected to the connecting chamber (43), the air outlet pipe (44) and the connecting chamber (43) are communicated with each other, and a plurality of air outlet holes are evenly provided on the bottom surface of the air outlet pipe (44).

4. The pre-sintering device for preparing a gradient cemented carbide rod according to claim 1, characterized in that: The adjustment portion includes an adjustment plate (45), the adjustment plate (45) is located inside the connecting chamber (43) and is rotatably connected to the inner wall of the connecting chamber (43), and the front and rear sides of the adjustment plate (45) are fixedly provided with connecting frames (46), the other end of the connecting frame (46) passes through the connecting chamber (43) and is connected to the bearing of the connecting chamber (43), and the top surface of the furnace body (1) is fixedly provided with an arc frame (47), two arc frames (47) are provided at the front and rear, and the upper end of the connecting frame (46) is located inside the arc frame (47) and is slidably connected to the inner wall of the arc frame (47).

5. A pre-sintering device for preparing a gradient cemented carbide rod according to claim 4, characterized in that: A driving plate (48) is hingedly provided at the upper end of the connecting frame (46), and two driving plates (48) are provided at the front and rear ends. A connecting rod (49) is provided between the front and rear driving plates (48), and the front and rear ends of the connecting rod (49) are respectively connected to the bearings of the adjacent driving plates (48). A movable seat (410) is provided on the outer side surface of the connecting rod (49).

6. A pre-sintering device for preparing a gradient cemented carbide rod according to claim 5, characterized in that: A placement plate (411) is provided below the movable seat (410), the bottom surface of the placement plate (411) is fixedly connected to the furnace body (1), a positioning groove is provided on the top surface of the placement plate (411), the lower end of the movable seat (410) is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove, a first cylinder (412) is fixedly provided on the top surface of the placement plate (411), and the output shaft of the first cylinder (412) is fixedly connected to the movable seat (410).

7. The pre-sintering device for preparing a gradient cemented carbide rod according to claim 1, characterized in that: The driving part includes a discharge rack (51), the discharge rack (51) is located inside the furnace body (1), a second cylinder (52) is fixedly provided on the right side of the partition (3), an output shaft of the second cylinder (52) passes through the partition (3) and is fixedly connected to the discharge rack (51), a slide rail (53) is fixedly provided on the inner wall of the furnace body (1), pulleys (54) are installed on the front and rear sides of the discharge rack (51), and the pulleys (54) are located inside the slide rail (53) and are slidably connected to the inner wall of the slide rail (53).

8. The pre-sintering device for preparing a gradient cemented carbide rod according to claim 1, characterized in that: The heating portion includes a placement seat (55), the placement seat (55) is fixedly connected to the inner wall of the furnace body (1), an electric heating tube (56) is installed inside the placement seat (55), and the top surface of the electric heating tube (56) is in contact with the bottom surface of the material rack (51).

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