Pouring device and casting method for large casting

Abstract

The pouring device comprises a movable track and a supporting frame slidably connected with the movable track, the lower end of the supporting frame is rotatably connected with a pouring barrel, a driving mechanism is arranged in the supporting frame to drive the supporting frame and the pouring barrel to move, and a driving motor is arranged at the joint of the supporting frame and the pouring barrel. The outer side of the driving motor is connected with a rotating wheel, one side of the top of the pouring barrel is provided with a liquid guide nozzle, a baking frame is arranged below the moving rail, a liquid collecting ring column is arranged on the periphery of the baking frame, a liquid collecting groove is formed in the top of the liquid collecting ring column, a liquid outlet plate is arranged on the side face of the liquid collecting ring column, and an inclined drainage groove is formed in the liquid outlet plate. According to the pouring device and the casting method for the large casting, before the pouring barrel is used for bearing molten metal, the pouring barrel is baked twice, large-size waste residues and small-size waste residues adhering to the interior of the pouring barrel are removed respectively, the situation that the waste residues reduce the quality of the molten metal is prevented, and the subsequent pouring quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal castings, in particular to a pouring device and a casting method for large castings. Background Art

[0002] Ferroalloy casting refers to the process of injecting liquid ferroalloy (commonly known as molten iron) into a mold to solidify it into an ingot. In the process of using some existing casting devices for large metal casting, in order to prevent the casting liquid inside the casting tube from cooling, a heating device is installed on the device to heat the casting liquid, but the heating of the casting tube in advance is often ignored. After the casting tube is used, solidified waste residue will remain in it. The current treatment of the waste residue is to shovel it out after the casting tube is used several times, and the workers often shovel it out after heating to soften the waste residue. This is not only time-consuming and labor-intensive, but also there is a risk of burns for the workers.

[0003] This case was created to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The object of the present invention is to provide a pouring device and a casting method for large castings to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pouring device and a casting method for large castings, comprising a movable track and a support frame slidably connected to the movable track, the lower end of the support frame is rotatably connected to a pouring barrel, a driving mechanism is provided in the support frame to drive the support frame and the pouring barrel to move, a driving motor is provided at the connection between the support frame and the pouring barrel, a rotating wheel is connected to the outer side of the driving motor, a liquid guide nozzle is provided on one side of the top of the pouring barrel, a baking rack is provided below the movable track, a liquid collecting ring column is provided on the periphery of the baking rack, a liquid collecting groove is provided on 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, the high point of the drainage groove is connected to the liquid collecting groove, and the connection between the liquid collecting groove and the drainage groove is the lowest point in the liquid collecting groove.

[0008] Preferably, when the casting cylinder is turned upside down, the liquid guide nozzle is opposite to the drainage groove.

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

[0010] Preferably, the baking rack is provided with an opening on the side thereof, in which a high-temperature heating element is provided, and the high-temperature heating element is installed into the baking rack through the opening.

[0011] Preferably, the low point of the drainage groove is connected to a liquid collecting box, and the connection between the liquid collecting box and the drainage groove is provided on the box wall on the side of the liquid collecting box.

[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 movable track, 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 movable track.

[0013] Preferably, the method comprises the following steps:

[0014] Step 1: The driving motor drives the pouring tube to reverse, and the support frame and the pouring tube are moved to the top of the baking frame for preliminary baking. The preliminary baking temperature and time are controlled, and the pouring tube that has been preliminarily baked is moved to the top of the liquid receiving box. The driving motor drives the pouring tube to swing back and forth in a small amplitude, so that large pieces of waste slag in the pouring tube fall into the liquid receiving box;

[0015] Step 2: Move the casting barrel to the top of the baking rack for secondary baking. Control the temperature of the secondary baking to be higher than that of the initial baking, so that the waste slag in the casting barrel melts, and the melted waste liquid flows into the liquid collecting tank along the inner wall of the casting barrel, and then flows into the liquid collecting box along the drainage groove until no obvious metal liquid flows down from the edge of the casting barrel. Turn off the high-temperature heating element, let it cool, and then turn the casting barrel back under the drive of the driving motor;

[0016] Step 3: After being baked twice and cooled, the casting tube 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 tilted casting.

[0017] (III) Beneficial effects

[0018] After adopting the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention provides a pouring device and a casting method for large castings. Before using the pouring tube to receive the molten metal, the pouring tube is baked twice to remove the large and small waste slags adhered to the pouring tube respectively, without the need for workers to shovel them out manually, thus avoiding danger to the workers and preventing them from reducing the quality of the molten metal, thereby improving the subsequent pouring quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] In the figure: 1 moving track, 2 supporting frame, 3 casting cylinder, 4 baking frame, 41 opening, 5 driving motor, 6 rotating wheel, 7 liquid guiding nozzle, 8 liquid collecting ring column, 81 liquid collecting trough, 9 liquid outlet plate, 91 drainage trough, 10 liquid collecting box. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below through the accompanying drawings and examples.

[0023] The embodiment of the present invention provides a pouring device and a casting method for a large casting, 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, the lower end of the support frame 2 is rotatably connected to a casting cylinder 3, a driving mechanism is arranged in the support frame 2 to drive the support frame 2 and the casting cylinder 3 to move, a driving motor 5 is arranged at the connection between the support frame 2 and the casting cylinder 3, a rotating wheel 6 is connected to the outer side of the driving motor 5, a liquid guide nozzle 7 is arranged on one side of the top of the casting cylinder 3, a baking rack 4 is arranged below the moving track 1, a liquid collecting ring column 8 is arranged on the periphery of the baking rack 4, a liquid collecting trough 81 is opened on the top of the liquid collecting ring column 8, a liquid outlet plate 9 is arranged on the side of the liquid collecting ring column 8, an inclined drainage trough 91 is arranged on the liquid outlet plate 9, the high point of the drainage trough 91 is connected to the liquid collecting trough 81, and the connection between the liquid collecting trough 81 and the drainage trough 91 is the lowest point in the liquid collecting trough 81.

[0024] Before using the casting tube 3 to receive the molten metal, the casting tube 3 is baked twice to remove the large and small waste slags adhering to the casting tube 3 respectively. Workers do not need to shovel them out manually, which avoids danger to workers and prevents the quality of the molten metal from being reduced, thereby improving the subsequent casting quality.

[0025] Reference Figure 1 When the casting tube 3 is inverted, the liquid guide nozzle 7 is opposite to the drainage groove 91. During baking, melted waste slag flows down from the liquid guide nozzle 7, and the waste liquid flowing down directly falls into the drainage groove 91 to prevent it from falling on the ground.

[0026] Reference Figure 2 The center of the bottom of the casting tube 3 is concave, and the edge is an arc-shaped slope. The arc-shaped slope is used to help drainage. Compared with the flat bottom surface, it prevents the waste liquid melted on the bottom surface from dripping during baking. After adopting the slope, the waste liquid flows along the slope to the side wall of the casting tube 3 under the action of gravity, and finally falls into the liquid collecting tank 81.

[0027] Reference Figure 1 An opening 41 is provided on the side of the baking rack 4, in which a high-temperature heating element (not shown in the figure, and the prior art will not be described in detail) is provided. The high-temperature heating element is installed into the baking rack 4 through the opening 41.

[0028] Reference Figure 1 The low point of the drainage trough 91 is connected to a liquid collecting box 10, and the connection between the liquid collecting box 10 and the drainage trough 91 is provided on the box wall on the side of the liquid collecting box 10, that is, the upper end surface of the liquid collecting box 10 is higher than the drainage trough 91, so that the casting tube 3 is initially baked and then swung above the liquid collecting box 10 so that the fallen waste slag falls into the liquid collecting box 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 movable 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 movable track 1. When taking over, the casting tube 3 moves to the front of the high-temperature furnace for taking over.

[0030] The following steps are involved:

[0031] Step 1: The driving motor 5 drives the pouring tube 3 to reverse, and the support frame 2 and the pouring tube 3 are moved to the top of the baking frame 4 for preliminary baking. The preliminary baking temperature and time are controlled, and the pouring tube 3 that has been preliminarily baked is moved to the top of the liquid receiving box 10. The driving motor 5 drives the pouring tube 3 to swing back and forth with a small amplitude, so that large pieces of waste slag in the pouring tube 3 fall into the liquid receiving box 10;

[0032] Step 2: Move the casting tube 3 again to the top of the baking rack 4 for secondary baking, and control the temperature of the secondary baking to be higher than that of the initial baking, so that the waste slag in the casting tube 3 is melted, and the melted waste liquid flows into the liquid collecting tank 81 along the inner wall of the casting tube 3, and then flows into the liquid collecting tank 10 along the drainage groove 91, until no obvious metal liquid flows down from the edge of the casting tube 3, turn off the high-temperature heating element, and after cooling, turn the casting tube 3 back under the drive of the driving motor 5;

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

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pouring device for large castings, comprising a movable track (1) and a support frame (2) slidably connected to the movable track (1), a pouring tube (3) being rotatably connected to the lower end of the support frame (2), a driving mechanism being provided inside the support frame (2) to drive the support frame (2) and the pouring tube (3) to move, characterized in that: A driving motor (5) is provided at the connection between the support frame (2) and the pouring cylinder (3), and a rotating wheel (6) is connected to the outer side of the driving 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 movable track (1), and a liquid collecting ring column (8) is provided on the periphery of the baking rack (4). A liquid collecting trough (81) is provided on the top of the liquid collecting ring column (8), and a liquid outlet plate (9) is provided on the side of the liquid collecting ring column (8). An inclined drainage trough (91) is provided on the liquid outlet plate (9), and the high point of the drainage trough (91) is connected to the liquid collecting trough (81), and the connection between the liquid collecting trough (81) and the drainage trough (91) is the lowest point in the liquid collecting trough (81).

2. A pouring device for large castings according to claim 1, characterized in that: When the casting cylinder (3) is turned upside down, the liquid guide nozzle (7) is opposite to the drainage groove (91).

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

4. A pouring device for large castings according to claim 1, characterized in that: The baking rack (4) is provided with an opening (41) on the side thereof, in which a high-temperature heating element is provided. The high-temperature heating element is installed into the baking rack (4) through the opening (41).

5. A pouring device for large castings according to claim 1, characterized in that: The lower point of the drainage groove (91) is connected to a liquid collecting box (10), and the connection between the liquid collecting box (10) and the drainage groove (91) is arranged on the box wall on the side of the liquid collecting box (10).

6. A pouring device for large castings according to claim 1, characterized in that: It also comprises a high-temperature furnace and a cavity mold, wherein the cavity mold and a baking rack (4) are arranged in sequence under the movable track (1), the high-temperature furnace is located between the cavity mold and the baking rack (4), and the high-temperature furnace is located on one side of the movable track (1).

7. A method for casting a large casting according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: The driving motor (5) drives the pouring tube (3) to reverse, and the support frame (2) and the pouring tube (3) are moved to the top of the baking frame (4) for preliminary baking. The preliminary baking temperature and time are controlled, and the pouring tube (3) that has been preliminarily baked is moved to the top of the liquid collecting box (10). The driving motor (5) drives the pouring tube (3) to swing back and forth with a small amplitude, so that large pieces of waste slag in the pouring tube (3) fall into the liquid collecting box (10); Step 2: Move the casting tube (3) again to the top of the baking rack (4) for secondary baking, and control the temperature of the secondary baking to be higher than that of the initial baking, so that the waste slag in the casting tube (3) melts, and the melted waste liquid flows into the liquid collecting tank (81) along the inner wall of the casting tube (3), and then flows into the liquid collecting box (10) along the drainage groove (91), until no obvious metal liquid flows down from the edge of the casting tube (3), turn off the high-temperature heating element, place it for cooling, and then rotate the casting tube (3) back under the drive of the driving motor (5); Step 3: After being baked twice and cooled, the casting tube (3) is moved to the front of the high-temperature furnace to receive the molten metal, and then moved to the front of the cavity mold for tilted casting.

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