Quenching device for nodular cast iron casting

Abstract

The utility model discloses a quenching device for nodular cast iron castings, which relates to the technical field of quenching and comprises a quenching table, the top of the quenching table is fixedly connected with a transfer mechanism, the middle of the quenching table is fixedly connected with a quenching mechanism, and one end of the top of the quenching table is fixedly connected with a heating mechanism. And the other end of the top of the quenching table is fixedly connected with a tempering mechanism. Through the arrangement of the quenching mechanism, when a nodular cast iron casting is quenched in winter, the first heater can heat quenching oil through the heating plate, so that the quenching effect is prevented from being influenced by too low temperature of the quenching oil, and meanwhile, the heating mechanism and the tempering mechanism are arranged on the two sides of the quenching mechanism; the transfer distance of the spheroidal graphite cast iron casting during quenching after heating and tempering after quenching can be shortened, so that the time interval of tempering after quenching is shortened, the heat loss of the spheroidal graphite cast iron casting is reduced, and the temperature is closer to the optimal quenching temperature when the spheroidal graphite cast iron casting is quenched.

Description

Technical Field

[0001] The utility model relates to the technical field of quenching, and particularly relates to a quenching device for ductile iron castings. Background Technique

[0002] Ductile iron is an important engineering material with the following characteristics: good mechanical properties: relatively high strength, better toughness and plasticity than ordinary cast iron, good wear resistance: suitable for some occasions requiring wear resistance, excellent shock absorption performance: can reduce vibration and noise, good casting performance: relatively easy to cast into castings with complex shapes. Ductile iron is widely used in many fields, such as: the automotive industry: manufacturing components such as crankshafts and gears, mechanical manufacturing: such as machine tool beds and valve bodies, municipal engineering: used for manhole covers, pipe fittings, etc.

[0003] At present, when producing ductile iron castings, it is necessary to perform quenching treatment on the ductile iron castings to improve the hardness of the surface of the ductile iron castings, and then improve the wear resistance of the ductile iron castings. When quenching the ductile iron castings, the optimal quenching temperature is 860°C, the quenching oil needs to be maintained at about 40°C, and tempering should be carried out immediately after quenching. However, in the existing quenching device, its oil tank does not have a heating function, resulting in too low a temperature of the quenching oil when quenching ductile iron castings in winter, affecting the quenching effect. Moreover, the quenching device does not have a heating function and a tempering function, and additional devices are required for the heating and tempering of the castings. The transfer distance of the castings is relatively long, and when moving, the temperature change of the ductile iron castings is relatively large, resulting in certain inconvenience in use. Summary of the Utility Model

[0004] The utility model provides a quenching device for ductile iron castings to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A quenching device for ductile iron castings includes a quenching table, a transfer mechanism is fixedly connected to the top of the quenching table, a quenching mechanism is fixedly connected to the middle of the quenching table, a heating mechanism is fixedly connected to one end of the top of the quenching table, and a tempering mechanism is fixedly connected to the other end of the top of the quenching table.

[0007] The further improvement of the technical solution of the utility model lies in: the transfer mechanism includes a fixed frame, the bottom of the fixed frame is fixedly connected to the top of the quenching table, a mounting plate is fixedly connected to the top of the inner cavity of the fixed frame, and a first motor is fixedly connected to one side of the mounting plate.

[0008] A further improvement of the technical solution of the present utility model lies in that one end of the rotating shaft of the first motor is fixedly connected with a first threaded rod, the surface of the first threaded rod is threadedly connected with a first driving block, a guide rod is slidably connected inside the first driving block, and both ends of the guide rod are fixedly connected with the surface of the mounting plate.

[0009] A further improvement of the technical solution of the present utility model lies in that the bottom of the first driving block is bolted with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a sliding plate, one end of the sliding plate is fixedly connected with a second motor, and one end of the rotating shaft of the second motor is fixedly connected with a second threaded rod.

[0010] A further improvement of the technical solution of the present utility model lies in that the surface of the second threaded rod is threadedly connected with a second driving block, the surface of the second driving block is slidably connected with the bottom of the sliding plate, the bottom of the second driving block is fixedly connected with a clamping plate, a ductile iron casting is lapped on one side of the clamping plate, and the end of the second threaded rod away from the second motor is rotatably connected with the inner wall of the sliding plate.

[0011] A further improvement of the technical solution of the present utility model lies in that the quenching mechanism includes an oil tank, the surface of the oil tank is fixedly connected with the middle part of the top of the quenching table, the bottom of the oil tank is fixedly connected with a first heater, a heating plate is fixedly connected with the bottom of the inner cavity of the oil tank, and a first controller is fixedly connected with one side of the front surface of the quenching table.

[0012] A further improvement of the technical solution of the present utility model lies in that the heating mechanism includes a heat-insulating heating box, a second heater is fixedly connected with one side of the heat-insulating heating box, a heating wire is fixedly connected with the inner wall of the heat-insulating heating box, one end of the heating wire close to the inner wall of the heat-insulating heating box is fixedly connected with one side of the second heater close to the heat-insulating heating box, and a second controller is fixedly connected with the other side of the second heater.

[0013] A further improvement of the technical solution of the present utility model lies in that one side of the top of the heat-insulating heating box is fixedly connected with a fixing member, a third motor is fixedly connected with one side of the fixing member, a sealing cover is rotatably connected with the other side of the fixing member, one end of the rotating shaft of the third motor is fixedly connected with the inside of the sealing cover, a placement rack is arranged at the bottom of the inner cavity of the heat-insulating heating box, and the structure of the tempering mechanism is the same as that of the heating mechanism.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0015] The present utility model provides a quenching device for ductile iron castings. Through the setting of the quenching mechanism, when quenching ductile iron castings in winter, the first heater can heat the quenching oil through the heating plate, avoiding the influence of too low temperature of the quenching oil on the quenching effect. At the same time, the heating mechanism and the tempering mechanism are arranged on both sides of the quenching mechanism, which can shorten the transfer distance of the ductile iron castings when quenching after heating and when tempering after quenching, thereby shortening the time interval for tempering after quenching, and at the same time shortening the time interval for quenching after heating the ductile iron castings, reducing the heat dissipation of the ductile iron castings, and making the temperature closer to the optimal quenching temperature when quenching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the top view structural schematic diagram of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the heating mechanism of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the transfer mechanism of the present utility model;

[0020] Figure 5 is of the present utility model Figure 4 A enlarged structural schematic diagram.

[0021] In the figure: 1, quenching table; 2, transfer mechanism; 21, fixing frame; 22, mounting plate; 23, first motor; 24, first threaded rod; 25, first driving block; 26, guide rod; 27, hydraulic cylinder; 28, sliding plate; 29, second motor; 210, second threaded rod; 211, second driving block; 212, clamping plate; 213, ductile iron casting; 3, quenching mechanism; 31, oil tank; 32, first heater; 33, heating plate; 34, first controller; 4, heating mechanism; 41, heat-insulating heating box; 42, second heater; 43, heating wire; 44, second controller; 45, fixing piece; 46, third motor; 47, sealing cover; 48, placing rack; 5, tempering mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in detail with reference to the embodiments:

[0023] Embodiment 1

[0024] As Figures 1-5As shown in the figure, the utility model provides a quenching device for ductile iron castings, including a quenching table 1. A transfer mechanism 2 is fixedly connected to the top of the quenching table 1. A quenching mechanism 3 is fixedly connected to the middle of the quenching table 1. A heating mechanism 4 is fixedly connected to one end of the top of the quenching table 1. A tempering mechanism 5 is fixedly connected to the other end of the top of the quenching table 1. The transfer mechanism 2 includes a fixed frame 21. The bottom of the fixed frame 21 is fixedly connected to the top of the quenching table 1. The top of the inner cavity of the fixed frame 21 is fixedly connected with a mounting plate 22. One side of the mounting plate 22 is fixedly connected with a first motor 23. One end of the rotating shaft of the first motor 23 is fixedly connected with a first threaded rod 24. The surface of the first threaded rod 24 is threadedly connected with a first driving block 25. A guide rod 26 is slidably connected inside the first driving block 25. Both ends of the guide rod 26 are fixedly connected to the surface of the mounting plate 22.

[0025] In this embodiment, under the action of the hydraulic cylinder 27, the clamping plate 212 moves downward. After moving to both sides of the ductile iron casting 213, under the action of the second motor 29, the second threaded rod 210 drives the second driving block 211 to slide along the bottom of the sliding plate 28, driving the clamping plate 212 to clamp and fix the ductile iron casting 213. After clamping, under the action of the hydraulic cylinder 27, the ductile iron casting 213 is lifted. Subsequently, under the action of the first motor 23, the first threaded rod 24 rotates, driving the first driving block 25 to move. Then, after moving the ductile iron casting 213 above the oil tank 31, the ductile iron casting 213 is moved downward and immersed in the oil tank 31 for quenching. While quenching, the tempering mechanism 5 is started to preheat the inside of the tempering mechanism 5.

[0026] Embodiment 2

[0027] As Figures 1-5 shown, on the basis of Embodiment 1, the utility model provides a technical solution: Preferably, the bottom of the first driving block 25 is bolted with a hydraulic cylinder 27. The output end of the hydraulic cylinder 27 is fixedly connected with a sliding plate 28. One end of the sliding plate 28 is fixedly connected with a second motor 29. One end of the rotating shaft of the second motor 29 is fixedly connected with a second threaded rod 210. The surface of the second threaded rod 210 is threadedly connected with a second driving block 211. The surface of the second driving block 211 is slidably connected to the bottom of the sliding plate 28. The bottom of the second driving block 211 is fixedly connected with a clamping plate 212. One side of the clamping plate 212 is lapped with a ductile iron casting 213. The end of the second threaded rod 210 away from the second motor 29 is rotatably connected to the inner wall of the sliding plate 28.

[0028] In this embodiment, the ductile iron casting 213 is lifted again by the hydraulic cylinder 27. Subsequently, the first motor 23 drives the first threaded rod 24 to rotate, so that the ductile iron casting 213 moves into the tempering mechanism 5. Then, the rotating shaft of the second motor 29 reverses, and the ductile iron casting 213 is placed into the tempering mechanism 5. Subsequently, the tempering mechanism 5 is closed, and the ductile iron casting 213 is heated and tempered.

[0029] Embodiment 3

[0030] As Figures 1-5 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the quenching mechanism 3 includes an oil tank 31, the surface of the oil tank 31 is fixedly connected to the middle part of the top of the quenching table 1, the bottom of the oil tank 31 is fixedly connected with a first heater 32, and a heating plate 33 is fixedly connected to the bottom of the inner cavity of the oil tank 31. One side of the front surface of the quenching table 1 is fixedly connected with a first controller 34. The heating mechanism 4 includes a heat-insulating heating box 41, a second heater 42 is fixedly connected to one side of the heat-insulating heating box 41, a heating wire 43 is fixedly connected to the inner wall of the heat-insulating heating box 41, one end of the heating wire 43 close to the inner wall of the heat-insulating heating box 41 is fixedly connected to one side of the second heater 42 close to the heat-insulating heating box 41, the other side of the second heater 42 is fixedly connected with a second controller 44, one side of the top of the heat-insulating heating box 41 is fixedly connected with a fixing member 45, a third motor 46 is fixedly connected to one side of the fixing member 45, a sealing cover 47 is rotatably connected to the other side of the fixing member 45, and one end of the rotating shaft of the third motor 46 is fixedly connected to the inside of the sealing cover 47. A placement rack 48 is arranged at the bottom of the inner cavity of the heat-insulating heating box 41, and the structure of the tempering mechanism 5 is the same as that of the heating mechanism 4.

[0031] In this embodiment, by placing the ductile iron casting 213 on the top of the placement rack 48 in the heat-insulating heating box 41, setting the heating temperature through the second controller 44, after the setting is completed, under the action of the third motor 46, the sealing cover 47 is driven to rotate to close the heat-insulating heating box 41. Under the action of the heating wire 43, the ductile iron casting 213 is heated. At the same time, during the heating process, the first heater 32 is controlled by the first controller 34, so that the heating plate 33 heats the quenching oil in the oil tank 31.

[0032] Next, the working principle of the quenching device for ductile iron castings will be specifically described.

[0033] As Figures 1-5As shown, when quenching, first place the ductile iron casting 213 on the top of the placement rack 48 in the heat-insulating heating box 41. Set the heating temperature through the second controller 44. After the setting is completed, under the action of the third motor 46, drive the sealing cover 47 to rotate to close the heat-insulating heating box 41. Under the action of the heating wire 43, heat the ductile iron casting 213. At the same time, during the heating process, control the first heater 32 through the first controller 34 to make the heating plate 33 heat the quenching oil in the oil tank 31. After heating to the appropriate temperature, open the sealing cover 47. Under the action of the hydraulic cylinder 27, move the clamping plate 212 downward. After moving to both sides of the ductile iron casting 213, under the action of the second motor 29, the second threaded rod 210 drives the second driving block 211 to slide along the bottom of the sliding plate 28, driving the clamping plate 212 to clamp and fix the ductile iron casting 213. After clamping, under the action of the hydraulic cylinder 27, lift the ductile iron casting 213. Subsequently, under the action of the first motor 23, rotate the first threaded rod 24 to drive the first driving block 25 to move, and then move the ductile iron casting 213 above the oil tank 31. Then lower the ductile iron casting 213 and immerse it in the oil tank 31 for quenching. During quenching, start the tempering mechanism 5 to preheat the inside of the tempering mechanism 5. After quenching is completed, the hydraulic cylinder 27 lifts the ductile iron casting 213 again. Subsequently, the first motor 23 drives the first threaded rod 24 to rotate, making the ductile iron casting 213 move into the tempering mechanism 5. Then reverse the rotation shaft of the second motor 29, and then place the ductile iron casting 213 into the tempering mechanism 5. Subsequently, close the tempering mechanism 5 and perform temperature-raising tempering on the ductile iron casting 213.

[0034] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A quenching device for ductile iron castings, comprising a quenching table (1), characterized in that: The top of the quenching table (1) is fixedly connected to a transfer mechanism (2), the middle of the quenching table (1) is fixedly connected to a quenching mechanism (3), one end of the top of the quenching table (1) is fixedly connected to a heating mechanism (4), and the other end of the top of the quenching table (1) is fixedly connected to a tempering mechanism (5), the transfer mechanism (2) comprises a fixed frame (21), the bottom of the fixed frame (21) is fixedly connected to the top of the quenching table (1), the top of the inner cavity of the fixed frame (21) is fixedly connected to a mounting plate (22), one side of the mounting plate (22) is fixedly connected to a first motor (23), one end of the rotating shaft of the first motor (23) is fixedly connected to a first threaded rod (24), the surface of the first threaded rod (24) is threadedly connected to a first driving block (25), the interior of the first driving block (25) is slidably connected to a guide rod (26), and both ends of the guide rod (26) are fixedly connected to the surface of the mounting plate (22).

2. A quenching device for ductile iron castings according to claim 1, characterized in that: The bottom of the first driving block (25) is bolted to a hydraulic cylinder (27), the output end of the hydraulic cylinder (27) is fixedly connected to a sliding plate (28), one end of the sliding plate (28) is fixedly connected to a second motor (29), and one end of the rotating shaft of the second motor (29) is fixedly connected to a second threaded rod (210).

3. A quenching device for ductile iron castings according to claim 2, characterized in that: The surface of the second threaded rod (210) is threadedly connected to a second driving block (211), the surface of the second driving block (211) is slidably connected to the bottom of the sliding plate (28), the bottom of the second driving block (211) is fixedly connected to a clamping plate (212), one side of the clamping plate (212) is overlapped with a ductile iron casting (213), and one end of the second threaded rod (210) away from the second motor (29) is rotatably connected to the inner wall of the sliding plate (28).

4. A quenching device for ductile iron castings according to claim 1, characterized in that: The quenching mechanism (3) comprises an oil tank (31), the surface of the oil tank (31) is fixedly connected to the middle of the top of the quenching table (1), the bottom of the oil tank (31) is fixedly connected to a first heater (32), the bottom of the inner cavity of the oil tank (31) is fixedly connected to a heating plate (33), and one side of the front of the quenching table (1) is fixedly connected to a first controller (34).

5. A quenching device for ductile iron castings according to claim 1, characterized in that: The heating mechanism (4) comprises a thermal insulation heating box (41), a second heater (42) is fixedly connected to one side of the thermal insulation heating box (41), a heating wire (43) is fixedly connected to the inner wall of the thermal insulation heating box (41), one end of the heating wire (43) close to the inner wall of the thermal insulation heating box (41) is fixedly connected to one side of the second heater (42) close to the thermal insulation heating box (41), and the other side of the second heater (42) is fixedly connected to a second controller (44).

6. A quenching device for ductile iron castings according to claim 5, characterized in that: A fixing part (45) is fixedly connected to one side of the top of the thermal insulation heating box (41), a third motor (46) is fixedly connected to one side of the fixing part (45), a sealing cover (47) is rotatably connected to the other side of the fixing part (45), one end of the rotating shaft of the third motor (46) is fixedly connected to the inside of the sealing cover (47), a placement rack (48) is provided at the bottom of the inner cavity of the thermal insulation heating box (41), and the structure of the tempering mechanism (5) is the same as that of the heating mechanism (4).

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