Molten steel steady-flow casting molding system for precision investment casting

Abstract

The utility model relates to the technical field of pouring, and one embodiment of the utility model provides a molten steel steady-flow pouring forming system for precision investment casting, which comprises an equipment connecting frame and a rectangular block, the rectangular block is arranged on the equipment connecting frame, a steady-flow pouring assembly is arranged on the rectangular block, a rectangular groove is formed in the surface of the equipment connecting frame, and the rectangular groove is formed in the surface of the equipment connecting frame. The lifting control assembly is arranged between the equipment connecting frame and the rectangular block, the steady-flow pouring assembly comprises a steady-flow head, the steady-flow head is arranged on the rectangular block, a slow-flow cavity is formed in the steady-flow head, a material receiving opening is formed in the top of the steady-flow head, and a buffering head is arranged at the top in the slow-flow cavity. By means of the technical scheme, the technical problems that in the prior art, an existing pouring mode has defects, and in a casting formed after pouring, the defect of shrinkage cavities of a middle pouring gate can occur, and the defect cannot be improved are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of casting technology, and more specifically, to a steady-flow casting system for investment casting of molten steel. Background Technology

[0002] Investment casting, also known as lost-wax casting, is a metalworking process. Its basic principle involves creating a precise model using fusible materials (such as wax and plastic), then coating the model surface with multiple layers of refractory material. After drying and hardening, the model is melted and poured out to form a refractory shell. Liquid metal is then poured into the shell, and after the metal cools, the refractory material is removed, yielding the desired casting.

[0003] The design of a gating system relies on an understanding of fluid dynamics principles. This is difficult to describe with a mathematical model because it is not only three-dimensional but also often transient. In the case of molten metal, it includes both velocity (a vector) and a fundamental material property, viscosity, both of which change as the metal cools. Fortunately, most foundry engineers have a good understanding of fluid dynamics by observing the flow of water in a stream. Therefore, most prefer laminar flow to turbulent flow.

[0004] The current casting method has a flaw: in the cast parts formed after casting, there will be a problem of shrinkage cavities at the intermediate gate, which cannot be improved.

[0005] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a steady-flow casting system for investment casting of molten steel, which solves the technical problem that the existing casting methods have defects, such as shrinkage cavities in the intermediate gate in the cast parts after casting, which cannot be improved.

[0007] According to one aspect, at least one embodiment of this disclosure provides a steady-flow casting system for investment casting of molten steel, comprising:

[0008] Equipment connecting frame and rectangular block, the rectangular block being disposed on the equipment connecting frame;

[0009] A flow-stabilizing casting assembly is disposed on the rectangular block;

[0010] A rectangular slot and a lifting control assembly are provided. The rectangular slot is formed on the surface of the equipment connecting frame, and the lifting control assembly is disposed between the equipment connecting frame and the rectangular block.

[0011] The flow stabilizing casting assembly includes a flow stabilizing head, which is disposed on the rectangular block. A flow stabilizing cavity is provided inside the flow stabilizing head, and a material receiving port is provided at the top of the flow stabilizing head. A buffer head is provided at the top of the flow stabilizing cavity.

[0012] As a further technical solution, a casting frame is provided at the bottom of the rectangular block, a flow divider is provided inside the casting frame, a secondary buffer block is provided at the top of the flow divider, the flow divider is connected to the slow flow chamber, and a connection interface is provided at the bottom of the casting frame, which is connected to the flow divider.

[0013] As a further technical solution, the lifting control component includes a vertical lead screw, which is installed in the rectangular groove. The vertical lead screw is rotated by a motor, and slide rails are provided on both sides of the rectangular groove.

[0014] As a further technical solution, a lifting seat is slidably connected to the slide rail, the lifting seat is connected to the vertical lead screw through a threaded connection, and a pair of support columns are fixedly connected to the surface of the lifting seat.

[0015] As a further technical solution, a pair of fixing sleeves are provided on the surface of the rectangular block, and the fixing sleeves are slidably fitted on the support column, and a connecting groove is provided at the front end of the support column.

[0016] As a further technical solution, a connecting block is provided on the inner side of the fixing sleeve, the connecting block is inserted into the connecting groove, and the connecting block and the connecting groove are fixedly connected by bolts.

[0017] As a further technical solution, a pair of fixing grooves are provided at both ends of the surface of the equipment connecting frame, and a round hole is provided in the fixing groove.

[0018] As a further technical solution, a baffle is fixedly connected to a pair of the support columns, and a pair of bosses are provided on the surface of the equipment connecting frame.

[0019] As a further technical solution, the boss is located on both sides of the rectangular groove, and the boss is slidably attached to the surface of the baffle.

[0020] The beneficial effects of the embodiments disclosed herein are as follows:

[0021] In this disclosure, by setting up a flow-stabilizing casting component, the overlap between the flow hot spot and the geometric hot spot can be avoided, overheating can be eliminated, the probability of shrinkage cavities and porosity can be reduced, and the molten metal can be changed from turbulent flow to stable laminar flow. The molten metal is stabilized and purified, the design requirements of the casting system are simplified, the length of the runner is reduced, and the casting process yield is improved. If the laminar or turbulent flow type can be precisely controlled at each point of the casting system, not only can the re-oxidation of the metal be avoided, but also the metal inclusions present in the melting operation can be separated by flotation. The inclusions can be separated by floating or settling under the action of gravity. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 This is an isometric sectional view of the present disclosure;

[0026] Figure 4 This is another isometric sectional view of this disclosure;

[0027] Figure 5 Appendix to this disclosure Figure 4 Enlarged view of part A in the middle;

[0028] In the diagram: 1. Equipment connecting frame; 2. Rectangular block; 3. Rectangular groove; 4. Flow stabilizing casting assembly; 4-1. Flow stabilizing head; 4-2. Slow flow chamber; 4-3. Material inlet; 4-4. Buffer head; 4-5. Casting frame; 4-6. Diverting chamber; 4-7. Secondary buffer block; 4-8. Connecting interface; 5. Lifting control assembly; 5-1. Vertical lead screw; 5-2. Slide rail; 5-3. Lifting seat; 5-4. Support column; 5-5. Fixing sleeve; 5-6. Connecting groove; 5-7. Connecting block; 6. Fixing groove; 7. Round hole; 8. Baffle; 9. Boss. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-5 As shown, it illustrates a steady-flow casting system for investment casting of molten steel according to an embodiment of this disclosure, comprising:

[0036] Equipment connecting frame 1 and rectangular block 2, with rectangular block 2 mounted on equipment connecting frame 1;

[0037] The flow-stabilizing casting component 4 is mounted on the rectangular block 2.

[0038] The rectangular slot 3 and the lifting control component 5 are provided. The rectangular slot 3 is opened on the surface of the equipment connecting frame 1, and the lifting control component 5 is arranged between the equipment connecting frame 1 and the rectangular block 2.

[0039] The flow stabilizing casting assembly 4 includes a flow stabilizing head 4-1, which is mounted on a rectangular block 2. A flow stabilizing cavity 4-2 is provided inside the flow stabilizing head 4-1. A material receiving port 4-3 is provided at the top of the flow stabilizing head 4-1. A buffer head 4-4 is provided at the top of the flow stabilizing cavity 4-2. A casting frame 4-5 is provided at the bottom of the rectangular block 2. A flow distribution cavity 4-6 is provided inside the casting frame 4-5. A secondary buffer block 4-7 is provided at the top of the flow distribution cavity 4-6. The flow distribution cavity 4-6 is connected to the flow stabilizing cavity 4-2. A connection interface 4-8 is provided at the bottom of the casting frame 4-5. The connection interface 4-8 is connected to the flow distribution cavity 4-6.

[0040] In some examples, to improve the effect of narrowing of the intermediate gate, a flow stabilizing pouring component 4 is designed. A flow stabilizing head 4-1 and a material receiving port 4-3 are set on the top of the rectangular block 2. The flow stabilizing head 4-1 has a flow-slowing cavity 4-2 that is connected to the material receiving port 4-3, so that material can be poured into the material receiving port 4-3. A buffer head 4-4 is set in the flow-slowing cavity to buffer the poured material and reduce impact. A pouring rack 4-5 is set at the bottom of the rectangular block 2. A flow-diverting cavity 4-6 is set inside and is connected to the flow-slowing cavity 4-2. A secondary buffer block 4-7 is set at the top of the flow-slowing cavity 4-2 for secondary buffering. A docking interface 4-8 is set at the bottom for docking with the mold.

[0041] like Figures 1-5 As shown, this embodiment proposes a lifting control component 5 including a vertical lead screw 5-1, which is installed in a rectangular groove 3. The vertical lead screw 5-1 is rotated by a motor. Slide rails 5-2 are provided on both sides of the rectangular groove 3. A lifting seat 5-3 is slidably connected to the slide rails 5-2. The lifting seat 5-3 is connected to the vertical lead screw 5-1 by a threaded connection. A pair of support columns 5-4 are fixedly connected to the surface of the lifting seat 5-3. A pair of fixing sleeves 5-5 are provided on the surface of the rectangular block 2. The fixing sleeves 5-5 are slidably fitted onto the support columns 5-4. A connecting groove 5-6 is opened at the front end of the support column 5-4. A connecting block 5-7 is provided inside the fixing sleeve 5-5. The connecting block 5-7 is inserted into the connecting groove 5-6. The connecting block 5-7 and the connecting groove 5-6 are fixedly connected by bolts.

[0042] In some examples, to achieve the effect of easy lifting and docking with the mold, a lifting control component 5 is designed. A vertical lead screw 5-1 and two slide rails 5-2 are set in the rectangular groove 3. The vertical lead screw 5-1 is controlled to rotate by a motor. A lifting seat 5-3 is connected to the vertical lead screw 5-1 and the slide rails 5-2. The lifting seat 5-3 can be controlled to lift up and down by the vertical lead screw 5-1. The lifting seat 5-3 is connected to two support columns 5-4. Two fixing sleeves 5-5 are set on the top of the rectangular block 2 for fitting and connecting with the support columns 5-4. The front end of the support column 5-4 has a connecting groove 5-6. A connecting block 5-7 is set on the inner side of the fixing sleeve 5-5 and is inserted and connected to the connecting groove 5-6. The connecting block 5-7 and the connecting groove 5-6 are fixedly connected by bolts.

[0043] For example, such as Figure 1 As shown, a pair of fixing grooves 6 are provided at both ends of the surface of the equipment connecting frame 1, and a round hole 7 is provided in the fixing groove 6.

[0044] In some examples, by providing multiple fixing slots 6 and circular holes 7, fasteners can be inserted into the circular holes 7 to fix the casting equipment in place.

[0045] For example, such as Figure 1 As shown, a pair of support columns 5-4 are fixedly connected to baffles 8, and a pair of bosses 9 are provided on the surface of the equipment connecting frame 1. The bosses 9 are located on both sides of the rectangular groove 3, and the bosses 9 are slidably attached to the surface of the baffles 8.

[0046] In some examples, the rectangular slot 3 is partially covered by a baffle 8 and a boss 9 to avoid affecting the vertical lead screw 5-1.

[0047] When needed, the equipment connecting frame 1 is installed on the casting equipment. Fasteners are passed through the round hole 7 and fixedly connected to the casting equipment. Then, the fixing sleeve 5-5 is fitted onto the support column 5-4. At the same time, the connecting block 5-7 is inserted into the connecting groove 5-6. After it is fully inserted, the bolts are screwed in for fixation. The mold is located below the casting frame 4-5. When casting, the vertical screw 5-1 is activated to connect the bottom interface 4-8 to the mold. Then, the material is poured into the receiving port 4-3. The material enters the mold through the slow flow chamber 4-2, the diversion chamber 4-6 and the interface 4-8. During the process, the flow rate is stabilized by the buffer head 4-4 and the secondary buffer block 4-7 to ensure that the material enters the mold stably.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A steady-flow casting system for investment casting of molten steel, characterized in that, include: Equipment connecting frame (1) and rectangular block (2), the rectangular block (2) being disposed on the equipment connecting frame (1); A flow-stabilizing casting assembly (4) is disposed on the rectangular block (2); A rectangular slot (3) and a lifting control component (5) are provided. The rectangular slot (3) is formed on the surface of the equipment connecting frame (1), and the lifting control component (5) is provided between the equipment connecting frame (1) and the rectangular block (2). The flow stabilizing casting assembly (4) includes a flow stabilizing head (4-1), which is disposed on the rectangular block (2). A slow-flow cavity (4-2) is provided inside the flow stabilizing head (4-1), and a material receiving port (4-3) is provided at the top of the flow stabilizing head (4-1). A buffer head (4-4) is provided at the top of the slow-flow cavity (4-2).

2. The investment casting precision casting molten steel steady-flow pouring system according to claim 1, characterized in that, The rectangular block (2) is provided with a casting frame (4-5) at the bottom. A flow divider (4-6) is provided inside the casting frame (4-5). A secondary buffer block (4-7) is provided at the top of the flow divider (4-6). The flow divider (4-6) is connected to the slow flow chamber (4-2). A connection interface (4-8) is provided at the bottom of the casting frame (4-5). The connection interface (4-8) is connected to the flow divider (4-6).

3. The investment casting precision casting molten steel steady-flow pouring and molding system according to claim 1, characterized in that, The lifting control component (5) includes a vertical lead screw (5-1), which is installed in the rectangular groove (3). The vertical lead screw (5-1) is rotated by a motor. Slide rails (5-2) are provided on both sides of the rectangular groove (3).

4. The investment casting precision casting molten steel steady-flow pouring system according to claim 3, characterized in that, A lifting seat (5-3) is slidably connected to the slide rail (5-2). The lifting seat (5-3) is connected to the vertical lead screw (5-1) by a threaded connection. A pair of support columns (5-4) are fixedly connected to the surface of the lifting seat (5-3).

5. The investment casting precision casting molten steel steady-flow pouring system according to claim 4, characterized in that, The rectangular block (2) has a pair of fixing sleeves (5-5) on its surface. The fixing sleeves (5-5) are slidably fitted on the support column (5-4). The support column (5-4) has a connecting groove (5-6) at its front end.

6. The investment casting precision casting molten steel steady-flow pouring system according to claim 5, characterized in that, A connecting block (5-7) is provided on the inner side of the fixing sleeve (5-5). The connecting block (5-7) is inserted into the connecting groove (5-6). The connecting block (5-7) and the connecting groove (5-6) are fixedly connected by bolts.

7. The investment casting precision casting molten steel steady-flow pouring system according to claim 1, characterized in that, The device connecting frame (1) has a pair of fixing grooves (6) at both ends of its surface, and a round hole (7) is provided in the fixing groove (6).

8. The investment casting precision casting molten steel steady-flow pouring system according to claim 4, characterized in that, A baffle (8) is fixedly connected to a pair of the support columns (5-4), and a pair of bosses (9) are provided on the surface of the equipment connecting frame (1).

9. A steady-flow casting system for investment casting of molten steel according to claim 8, characterized in that, The boss (9) is located on both sides of the rectangular groove (3), and the boss (9) is slidably attached to the surface of the baffle (8).

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