Stern post casting system for ship

Abstract

The utility model provides a stern post casting system for a ship, which belongs to the technical field of casting moulds and comprises a mould unit with a mould cavity inside and a casting unit fixedly connected with the mould unit and communicated with the mould cavity, and the casting unit comprises a vertical casting pipeline and a transverse filling pipeline. The vertical casting pipeline communicates with the transverse filling pipelines, the transverse filling pipelines surround the mold unit and communicate with the mold cavity, and the multiple transverse filling pipelines are arranged at intervals in the height direction of the mold unit and communicate with the bottom end of the vertical casting pipeline; the technical problem that according to an existing stern post casting system, the product quality cannot meet the requirement due to the fact that the temperature of molten steel in a mold cavity is not uniform is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting molds, and in particular relates to a marine stern casting system. Background Art

[0002] The stern post refers to the component at the stern end of the ship that connects the outer plates on both sides and the keel from the bottom of the ship to the stern rib plate. It is relatively large in size, with a height of more than 2m. The whole is formed in one piece by casting using cast steel.

[0003] When casting the stern column, the casting channel is connected to the bottom of the casting mold. The molten steel enters the bottom of the mold through the casting channel and gradually fills the mold cavity until it is completely filled. The mold is then removed and formed after cooling.

[0004] Due to the large size of the stern column, in the existing casting method, the molten steel gradually fills upward through the bottom of the mold cavity. The molten steel at the top has a long travel path, which will inevitably cause excessive heat loss, easily leading to uneven heating of the entire product and uneven shrinkage during the cooling process, thereby affecting the overall quality of the product.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The utility model aims to provide a marine stern casting system to solve the technical problem that the product quality of the existing stern casting system cannot meet the requirements due to the uneven temperature of molten steel in the mold cavity.

[0007] In order to achieve the above-mentioned purpose, the marine stern column casting system of the utility model provides the following technical solutions:

[0008] A marine stern casting system comprises a mold unit having a mold cavity therein, a casting unit fixedly connected to the mold unit and connected to the mold cavity, the casting unit comprising a vertical casting pipe and a transverse filling pipe, the vertical casting pipe and the transverse filling pipe are connected and arranged, the transverse filling pipe surrounds the mold unit and is connected to the mold cavity, a plurality of the transverse filling pipes are arranged at intervals along the height direction of the mold unit and are respectively connected to the bottom ends of the vertical casting pipes.

[0009] As a further optimized technical solution, the bottom end of the vertical casting pipe is vertically connected with a diversion pipe, and the horizontal filling pipe is connected with the vertical casting pipe through the diversion pipe.

[0010] As a further optimized technical solution, each of the transverse filling pipes is connected to the mold cavity of the mold unit through a plurality of branch pipes.

[0011] As a further optimized technical solution, a cylindrical riser structure is provided on the top of the mold unit, and the interior of the riser structure has a accommodating space connected to the top of the mold cavity for compensating the shrinkage of the stern column.

[0012] As a further optimized technical solution, an annular isolation layer is arranged inside the accommodating space, and the isolation layer and the outer side wall of the riser structure form a heat-insulating space.

[0013] As a further optimized technical solution, the heat preservation space is connected to the bottom of the accommodating space.

[0014] As a further optimized technical solution, a connecting ring is provided on the top of the isolation layer, and the connecting ring is detachably connected to the top wall of the riser structure.

[0015] As a further optimized technical solution, the top of the riser structure has a slot, and the connecting ring is provided with a protrusion adapted to the slot at the position corresponding to the slot. The connecting ring and the riser structure are detachably connected by the locking and connection method of the slot and the protrusion.

[0016] As a further optimized technical solution, the connecting ring has a plurality of symmetrically arranged through holes, the through holes are set to penetrate the connecting ring, and the through holes are threaded holes.

[0017] As a further optimized technical solution, a supplementary pipeline is fixedly connected to the outer wall of the riser structure, and the supplementary pipeline is connected to the insulation space.

[0018] Beneficial effect: The utility model sets a plurality of transverse filling pipes, and the plurality of transverse filling pipes are arranged at intervals along the height direction of the mold unit and are respectively connected to the bottom ends of the vertical casting pipes. During the casting process, the molten steel first fills the bottom mold cavity through the bottommost transverse filling pipe. When the filling is close to a higher transverse filling pipe, the bottom pressure increases, thereby prompting the molten steel to flow directly to the higher transverse filling pipe, and then flow to the inside of the mold cavity through the higher transverse filling pipe. Compared with the prior art in which all the molten steel fills the mold cavity upward from the bottom, this solution can realize stepped filling of the mold cavity, effectively improving the overall uneven heating of the product, making the product shrink more evenly during the cooling process, thereby improving the overall quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a front view schematic diagram of an embodiment of the utility model;

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0023] In the figure: 1. mold unit; 2. casting unit; 201. vertical casting pipe; 202. horizontal filling pipe; 203. diversion pipe; 204. branch pipe; 3. riser structure; 301. accommodating space; 302. isolation layer; 303. insulation space; 304. connecting ring; 305. slot; 306. bump; 307. perforation; 308. supplementary pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0025] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0027] The utility model provides a marine stern casting system, which realizes stepped casting of products by arranging a plurality of transverse filling pipes, thereby making the overall temperature distribution of the product more uniform, the cooling shrinkage more uniform, and thus ensuring the overall quality of the product.

[0028] Specifically, Figure 1 As shown, the marine stern casting system includes a mold unit 1 and a casting unit 2. The mold unit 1 has a mold cavity for casting products. The casting unit 2 is fixedly connected to the mold unit 1 and connected to the mold cavity for casting molten steel into the mold cavity.

[0029] The casting unit 2 specifically includes a vertical casting pipe 201 and two transverse filling pipes 202. The vertical casting pipe 201 is parallel to the height direction of the mold unit 1, and the two transverse filling pipes 202 are respectively connected to the mold cavity and arranged at intervals along the height direction of the mold unit 1. In this embodiment, one transverse filling pipe 202 is arranged at the bottom of the mold unit 1, and the other transverse filling pipe 202 is arranged in the middle of the mold unit 1. The bottom end of the vertical casting pipe 201 is vertically connected to a shunt pipe 203, one transverse filling pipe 202 is directly connected to one end of the shunt pipe 203 away from the vertical casting pipe 201, and the other transverse filling pipe 202 is connected to the bottom end of the vertical casting pipe 201 through the shunt pipe 203.

[0030] In this way, by setting two transverse filling pipes 202, specifically during the casting process, the molten steel first flows along the vertical casting pipe 201 and the diversion pipe 203 into the bottom transverse filling pipe 202, and the transverse filling pipe 202 fills the bottom mold cavity. When the height of the molten steel in the mold cavity is close to the middle transverse filling pipe 202, the liquid pressure at the bottom of the mold cavity increases, thereby prompting the molten steel to flow directly to the middle transverse filling pipe 202, and then the molten steel is cast into the mold cavity through the middle transverse filling pipe 202. This step-by-step casting method can make the overall temperature distribution of the product more uniform, which helps to ensure product quality.

[0031] In this embodiment, in order to increase the casting speed, two vertical casting pipes 201 are provided in parallel, and the two vertical casting pipes 201 are symmetrically arranged through the symmetry plane of the mold unit 1 .

[0032] In this embodiment, each transverse filling pipe 202 is connected to the mold cavity of the mold unit 1 through a plurality of branch pipes 204, so that the mold cavity can be quickly filled.

[0033] After casting is completed, the product will shrink to a certain extent during the cooling process of the product. In order to ensure that the size of the product after shrinkage still meets the requirements, it is necessary to replenish molten iron to the shrunk position in time. In order to facilitate the replenishment operation, a cylindrical riser structure 3 is provided on the top of the mold unit 1. The interior of the riser structure 3 has a accommodating space 301 connected to the top of the mold cavity. In this way, molten iron is stored in the riser structure 3. Once the product shrinks, the molten iron in the riser structure 3 will flow to the position that needs to be replenished in time. Therefore, in the utility model, the riser structure 3 is used to replenish the shrinkage of the stern column.

[0034] Because the existing riser structure 3 is arranged at the top of the mold unit 1 and is open, the molten iron inside the riser structure 3 for shrinkage compensation is easier to cool than the molten iron inside the mold cavity. Once the molten iron in the riser structure 3 cools down, it will not play a shrinkage compensation role.

[0035] In order to solve the above technical problems, an annular isolation layer 302 is provided inside the accommodation space 301, such as Figure 2 , Figure 3 As shown, the insulation layer 302 and the outer wall of the riser structure 3 form a heat-insulating space 303 to reduce the cooling speed of the solution in the containing space 301. In this embodiment, the insulation layer 302 can be made of a material with a relatively good heat-insulating effect.

[0036] Specifically, the heat preservation space 303 is connected to the bottom of the accommodation space 301. In this way, the solution in the accommodation space 301 will also flow into the heat preservation space 303, and the outer heat preservation space 303 is used to slow down the cooling speed of the solution in the middle of the accommodation space 301, thereby ensuring the shrinkage compensation effect of the solution in the accommodation space 301.

[0037] In this embodiment, the top of the isolation layer 302 has a connecting ring 304, and the connecting ring 304 is detachably connected to the top wall of the riser structure 3. Specifically, the top of the riser structure 3 has a slot 305, and the connecting ring 304 is provided with a protrusion 306 adapted to the slot 305 at the position corresponding to the slot 305, and the connecting ring 304 and the riser structure 3 are detachably connected by the slot 305 and the protrusion 306. In this way, after the product is cooled in the later stage, the isolation plate can be removed first, and then the mold unit 1 can be removed, so as to facilitate the demolding of the product.

[0038] In order to facilitate the molten steel in the accommodation space 301 to enter the heat preservation space 303, the connecting ring 304 has a plurality of through holes 307 penetrating the connecting ring 304. In order to facilitate the removal of the isolation layer 302, the through holes 307 are symmetrically arranged, and the through holes 307 are threaded holes, so that when removing the isolation layer 302, the hook with external thread can be screwed into the through hole 307, and then the isolation layer 302 can be removed by pulling the hook.

[0039] In order to ensure the shrinkage compensation effect of the riser structure 3 and reduce the disturbance to the top slag in the riser structure 3, a supplementary pipe 308 can be fixedly connected to the outer wall of the riser structure 3, and the supplementary pipe 308 is connected to the insulation space 303. In this way, the riser structure 3 can be supplemented with molten steel with higher temperature through the supplementary pipe 308 at a later stage, which can also further slow down the cooling rate of the molten steel in the riser structure 3.

[0040] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A marine stern casting system, comprising a mold unit (1) having a mold cavity therein, a casting unit (2) fixedly connected to the mold unit (1) and connected to the mold cavity, the casting unit (2) comprising a vertical casting pipe (201) and a horizontal filling pipe (202), the vertical casting pipe (201) and the horizontal filling pipe (202) being connected and arranged, the horizontal filling pipe (202) surrounding the mold unit (1) and connected to the mold cavity, characterized in that: A plurality of the transverse filling pipes (202) are provided, and the plurality of the transverse filling pipes (202) are arranged at intervals along the height direction of the mold unit (1) and are respectively connected to the bottom end of the vertical casting pipe (201).

2. The marine stern casting system according to claim 1, characterized in that: The bottom end of the vertical casting pipe (201) is vertically connected to a diversion pipe (203), and the horizontal filling pipe (202) is connected to the vertical casting pipe (201) through the diversion pipe (203).

3. The marine stern casting system according to claim 1, characterized in that: Each of the transverse filling pipes (202) is connected to the mold cavity of the mold unit (1) through a plurality of branch pipes (204).

4. The marine stern casting system according to any one of claims 1 to 3, characterized in that: A cylindrical riser structure (3) is arranged at the top of the mold unit (1), and the interior of the riser structure (3) has a receiving space (301) connected to the top of the mold cavity, which is used to compensate for the shrinkage of the stern column.

5. The marine stern casting system according to claim 4, characterized in that: An annular isolation layer (302) is arranged inside the accommodation space (301), and the isolation layer (302) and the outer side wall of the riser structure (3) form a heat-insulating space (303).

6. The marine stern casting system according to claim 5, characterized in that: The heat-insulating space (303) is in communication with the bottom of the accommodating space (301).

7. The marine stern casting system according to claim 5, characterized in that: The top of the isolation layer (302) is provided with a connecting ring (304), and the connecting ring (304) is detachably connected to the top wall of the riser structure (3).

8. The marine stern casting system according to claim 7, characterized in that: The top of the riser structure (3) is provided with a slot (305), and the connection ring (304) is provided with a protrusion (306) adapted to the slot (305) at a position corresponding to the slot (305). The connection ring (304) and the riser structure (3) are detachably connected by a locking connection method between the slot (305) and the protrusion (306).

9. The marine stern casting system according to claim 7, characterized in that: The connecting ring (304) is provided with a plurality of symmetrically arranged through holes (307), the through holes (307) are arranged to penetrate the connecting ring (304), and the through holes (307) are threaded holes.

10. The marine stern casting system according to claim 5, characterized in that: A supplementary pipe (308) is fixedly connected to the outer wall of the riser structure (3), and the supplementary pipe (308) is connected to the heat preservation space (303).

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