A casting apparatus and casting method for large castings

Abstract

This invention provides a casting apparatus and casting method for large castings, including a moving track and a support frame slidably connected to the moving track. A casting cylinder is rotatably connected to the lower end of the support frame. A drive mechanism is provided inside the support frame to drive the support frame and the casting cylinder to move. A drive motor is provided at the connection between the support frame and the casting cylinder. A rotating wheel is connected to the outside of the drive motor. A liquid guide nozzle is provided on one side of the top of the casting cylinder. A baking rack is provided below the moving track. A liquid collecting ring column is provided around the baking rack. A liquid collecting groove is opened at the top of the liquid collecting ring column. A liquid outlet plate is provided on the side of the liquid collecting ring column. An inclined drainage groove is provided on the liquid outlet plate. This invention provides a casting apparatus and casting method for large castings. Before using the casting cylinder to receive molten metal, the casting cylinder is baked twice to remove large and small waste residues adhering to the inside of the casting cylinder, respectively, preventing them from reducing the quality of the molten metal and improving the subsequent casting quality.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, specifically to a pouring device and casting method for large castings. Background Technology

[0002] Ferroalloy casting refers to the process of pouring molten ferroalloy (commonly known as molten iron) into a mold to solidify into an ingot. Some existing casting equipment used for large metal castings employs heating devices to prevent the molten metal inside the casting cylinder from cooling during operation. However, preheating of the casting cylinder itself is often overlooked. After use, solidified slag remains inside the casting cylinder. Currently, the slag is typically scraped off after several uses, often requiring heating to soften it before workers remove it. This process is time-consuming, labor-intensive, and carries the risk of burns for workers.

[0003] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a casting apparatus and casting method for large castings to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a casting device and casting method for large castings, comprising a moving track and a support frame slidably connected to the moving track, a casting cylinder rotatably connected to the lower end of the support frame, a driving mechanism inside the support frame driving the support frame and the casting cylinder to move, a driving motor at the connection between the support frame and the casting cylinder, a rotating wheel connected to the outside of the driving motor, a liquid guide nozzle on one side of the top of the casting cylinder, a baking rack below the moving track, a liquid collecting ring column around the baking rack, a liquid collecting groove at the top of the liquid collecting ring column, a liquid outlet plate on the side of the liquid collecting ring column, an inclined drainage groove on the liquid outlet plate, the high point of the drainage groove communicating with the liquid collecting groove, and the connection between the liquid collecting groove and the drainage groove being the lowest point inside the liquid collecting groove.

[0008] Preferably, when the casting cylinder is reversed, the liquid guide nozzle is opposite to the drainage channel.

[0009] Preferably, the bottom center of the casting cylinder is concave, and the edge has an arc-shaped bevel, which is used to help with drainage.

[0010] Preferably, the baking rack has an opening on its side, and a high-temperature heating element is installed inside the opening. The high-temperature heating element is inserted into the baking rack through the opening.

[0011] Preferably, the lowest point of the diversion channel is connected to a liquid collection tank, and the connection between the liquid collection tank and the diversion channel is located on the side wall of the liquid collection tank.

[0012] Preferably, it also includes a high-temperature furnace and a cavity mold, wherein the cavity mold and the baking rack are arranged in sequence under the moving track, and the high-temperature furnace is located between the cavity mold and the baking rack, and the high-temperature furnace is located on one side of the moving track.

[0013] Preferably, it includes the following steps:

[0014] Step 1: The pouring cylinder is reversed by the drive motor, and the support frame and pouring cylinder are moved above the baking rack to be preheated. The preheating temperature and time are controlled. The pouring cylinder that has been preheated is moved above the liquid collection tank. The drive motor drives the pouring cylinder to swing back and forth slightly, so that large pieces of waste residue in the pouring cylinder fall into the liquid collection tank.

[0015] Step 2: Move the casting cylinder back to the baking rack for a second baking. Control the temperature of the second baking to be higher than that of the initial baking, so that the waste residue in the casting cylinder melts. The melted waste liquid flows into the collection tank along the inner wall of the casting cylinder, and then into the liquid collection tank along the diversion channel until no obvious molten metal is seen flowing down from the edge of the casting cylinder. Turn off the high-temperature heating element, let it cool, and then rotate the casting cylinder back under the drive motor.

[0016] Step 3: After being baked and cooled twice, the casting cylinder is moved to the front of the high-temperature furnace to receive the molten metal. After receiving the molten metal, it is moved to the front of the cavity mold for inclined casting.

[0017] (III) Beneficial Effects

[0018] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The casting device and casting method for large castings of the present invention, before using the casting cylinder to receive the molten metal, bakes the casting cylinder twice to remove the large and small waste residues adhering to the inside of the casting cylinder, respectively. This eliminates the need for workers to manually shovel them out, avoids danger to workers, prevents the reduction of the quality of the molten metal, and improves the subsequent casting quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the casting cylinder;

[0021] In the diagram: 1. Moving track, 2. Support frame, 3. Pouring cylinder, 4. Baking rack, 41. Opening, 5. Drive motor, 6. Rotating wheel, 7. Liquid guide nozzle, 8. Liquid collection ring column, 81. Liquid collection tank, 9. Liquid outlet plate, 91. Drainage channel, 10. Liquid collection tank. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] This invention provides a casting apparatus and casting method for large castings, such as... Figure 1-2 As shown, it includes a moving track 1 and a support frame 2 slidably connected to the moving track 1. A pouring cylinder 3 is rotatably connected to the lower end of the support frame 2. A drive mechanism is provided inside the support frame 2 to drive the support frame 2 and the pouring cylinder 3 to move. A drive motor 5 is provided at the connection between the support frame 2 and the pouring cylinder 3. A rotating wheel 6 is connected to the outside of the drive motor 5. A liquid guide nozzle 7 is provided on one side of the top of the pouring cylinder 3. A baking rack 4 is provided below the moving track 1. A liquid collecting ring column 8 is provided around the baking rack 4. A liquid collecting groove 81 is opened at the top of the liquid collecting ring column 8. A liquid outlet plate 9 is provided on the side of the liquid collecting ring column 8. An inclined drainage groove 91 is provided on the liquid outlet plate 9. The high point of the drainage groove 91 is connected to the liquid collecting groove 81. The connection between the liquid collecting groove 81 and the drainage groove 91 is the lowest point inside the liquid collecting groove 81.

[0024] Before using the casting cylinder 3 to receive the molten metal, the casting cylinder 3 is baked twice to remove the larger and smaller waste residues adhering to the inside of the casting cylinder 3. This eliminates the need for workers to manually shovel them out, avoids worker hazards, prevents the degradation of the molten metal quality, and improves the subsequent casting quality.

[0025] Reference Appendix Figure 1 When the casting cylinder 3 is reversed, the liquid guide nozzle 7 is opposite to the diversion trough 91. During baking, melted waste residue flows down from the liquid guide nozzle 7. The waste liquid flowing down from this point falls directly into the diversion trough 91 to prevent it from falling onto the ground.

[0026] Reference Appendix Figure 2 The bottom center of the casting cylinder 3 is concave, and the edge has an arc-shaped slope. The arc-shaped slope is used to help guide the flow. Compared with the flat bottom surface, it prevents the waste liquid that melts on the bottom surface during baking from dripping. With the slope, the waste liquid flows along the slope to the side wall of the casting cylinder 3 under the action of gravity, and finally falls into the liquid collection tank 81.

[0027] Reference Appendix Figure 1 The baking rack 4 has an opening 41 on its side, and a high-temperature heating element (not shown in the figure, and will not be described in detail in the prior art) is installed inside the baking rack 4 through the opening 41.

[0028] Reference Appendix Figure 1 The lowest point of the diversion channel 91 is connected to the liquid collection tank 10. The connection between the liquid collection tank 10 and the diversion channel 91 is opened on the side wall of the liquid collection tank 10, that is, the upper end of the liquid collection tank 10 is higher than the diversion channel 91, so that after the casting cylinder 3 is initially baked, it swings above the liquid collection tank 10, and the fallen waste residue falls into the liquid collection tank 10.

[0029] It also includes a high-temperature furnace (not shown in the figure) and a cavity mold (not shown in the figure). The cavity mold and the baking rack 4 are arranged in sequence under the moving track 1. The high-temperature furnace is located between the cavity mold and the baking rack 4. The high-temperature furnace is located on one side of the moving track 1. When receiving, the casting cylinder 3 moves to the front of the high-temperature furnace to receive.

[0030] Includes the following steps:

[0031] Step 1: Drive the pouring cylinder 3 to reverse by the drive motor 5. The support frame 2 and the pouring cylinder 3 are moved above the baking rack 4 to be preheated. Control the preheating temperature and time. Move the preheated pouring cylinder 3 above the liquid collection tank 10. Drive the drive motor 5 to drive the pouring cylinder 3 to swing back and forth slightly, so that large pieces of waste residue in the pouring cylinder 3 fall into the liquid collection tank 10.

[0032] Step 2: Move the casting cylinder 3 back to the baking rack 4 for a second baking. Control the temperature of the second baking to be higher than that of the initial baking, so that the waste residue inside the casting cylinder 3 melts. The melted waste liquid flows along the inner wall of the casting cylinder 3 into the collection tank 81, and then flows along the diversion channel 91 into the liquid collection tank 10 until no obvious molten metal is seen flowing down from the edge of the casting cylinder 3. Turn off the high-temperature heating element, let it cool, and then rotate the casting cylinder 3 back under the drive of the drive motor 5.

[0033] Step 3: After being baked and cooled twice, the casting cylinder 3 is moved to the front of the high-temperature furnace to receive the molten metal. After receiving the molten metal, it is moved to the front of the cavity mold for inclined casting.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting method for a casting apparatus for large castings, comprising the following steps: Step 1: Drive the pouring cylinder (3) to reverse by the drive motor (5), and move the support frame (2) and the pouring cylinder (3) to the baking rack (4) for initial baking. Control the initial baking temperature and time, and move the pouring cylinder (3) that has been initially baked to the top of the liquid collection tank (10). Drive the drive motor (5) to drive the pouring cylinder (3) to swing back and forth slightly, so that large pieces of waste residue in the pouring cylinder (3) fall into the liquid collection tank (10). Step 2: Move the casting cylinder (3) back to the baking rack (4) for a second baking. Control the temperature of the second baking to be higher than that of the initial baking, so that the waste residue in the casting cylinder (3) melts. The melted waste liquid flows into the collection tank (81) along the inner wall of the casting cylinder (3), and then flows into the liquid collection tank (10) along the diversion channel (91) until no obvious metal liquid is seen flowing down from the edge of the casting cylinder (3). Turn off the high temperature heating element, let it cool, and then turn the casting cylinder (3) back under the drive of the drive motor (5). Step 3: After being baked and cooled twice, the casting cylinder (3) is moved to the front of the high-temperature furnace to receive the molten metal. After receiving the molten metal, it is moved to the front of the cavity mold for inclined casting. The casting device for large castings corresponding to this method includes a moving track (1) and a support frame (2) slidably connected to the moving track (1). A casting cylinder (3) is rotatably connected to the lower end of the support frame (2). A driving mechanism is provided inside the support frame (2) to drive the support frame (2) and the casting cylinder (3) to move. A drive motor (5) is provided at the connection between the support frame (2) and the casting cylinder (3). A rotating wheel (6) is connected to the outside of the drive motor (5). A liquid guide nozzle (7) is provided on one side of the top of the casting cylinder (3). A baking rack (4) is provided below the moving track (1). The frame (4) is provided with a liquid collection ring column (8) on the outside. The top of the liquid collection ring column (8) is provided with a liquid collection trough (81). The side of the liquid collection ring column (8) is provided with a liquid outlet plate (9). The liquid outlet plate (9) is provided with an inclined drainage trough (91). The high point of the drainage trough (91) is connected to the liquid collection trough (81). The connection between the liquid collection trough (81) and the drainage trough (91) is the lowest point in the liquid collection trough (81). The low point of the drainage trough (91) is connected to a liquid collection box (10). The connection between the liquid collection box (10) and the drainage trough (91) is opened on the side wall of the liquid collection box (10).

2. The casting method of a casting device for large castings according to claim 1, characterized in that: When the casting cylinder (3) is reversed, the liquid guide nozzle (7) is opposite to the diversion groove (91).

3. The casting method of a casting device for large castings according to claim 1, characterized in that: The bottom center of the casting cylinder (3) is concave, and the edge has an arc-shaped slope, which is used to help with drainage.

4. The casting method of a casting device for large castings according to claim 1, characterized in that: The baking rack (4) has an opening (41) on its side, and a high-temperature heating element is provided inside it. The high-temperature heating element is installed inside the baking rack (4) through the opening (41).

5. The casting method of a casting device for large castings according to claim 1, characterized in that: It also includes a high-temperature furnace and a cavity mold. The cavity mold and the baking rack (4) are arranged in sequence under the moving track (1). The high-temperature furnace is located between the cavity mold and the baking rack (4) and is located on one side of the moving track (1).

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