Solid-liquid composite casting parameter testing mold and method

Abstract

The invention provides a solid-liquid composite casting parameter testing mold and method, and relates to the technical field of solid-liquid composite casting. The solid-liquid composite casting parameter testing mold comprises a base mold made of a sand core material, a cavity is formed in the base mold, at least two tubular embedded metal parts are arranged in the cavity, the cavity comprises a combination cavity with at least part being round, the embedded metal parts are arranged in the combination cavity, the round part of the combination cavity and the embedded metal parts are coaxially arranged, and the embedded metal parts are arranged in the combination cavity. The distance between the circular part of the combination cavity and the outer surface of the pre-embedded metal part is the pouring coating thickness of the pre-embedded metal part, and any parameter or combination of any parameter of the inner diameter, the wall thickness, the material, the outer surface treatment process and the pouring coating thickness of the at least two pre-embedded metal parts is different. The testing method comprises the steps of obtaining a casting through a mold, detecting the combination quality of the casting and evaluating the influence of parameters. According to the invention, the parameters of solid-liquid composite casting can be efficiently and comprehensively tested.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid composite casting technology, and in particular to a mold and method for testing parameters in solid-liquid composite casting. Background Technology

[0002] Solid-liquid composite casting achieves a metallurgical bond at the interface by combining two different metallic materials through a composite molding method. This compensates for the deficiencies of each component, integrates the advantages of both alloys, and achieves diverse overall properties. Compared to traditional welding methods, solid-liquid composite casting technology is simpler, less constrained by shape conditions, and has higher production efficiency. To determine reasonable solid-liquid composite casting process parameters and ensure a good bond between the solid and liquid interfaces, corresponding composite casting process experiments need to be designed before product production. The experimental setup typically consists of a casting mold and a pre-placed metal part in the mold cavity. During the experiment, molten metal is poured into the mold and covers the surface of the metal part. After solidification, the interface between the metal part and the casting is inspected to determine the impact of process parameters on the bonding quality, and based on this, surface treatment processes and solid-liquid composite processes are selected or optimized.

[0003] However, existing experimental setups often only verify a single parameter or a combination of a few parameters in a single experiment, failing to comprehensively evaluate the impact of multiple process parameters on the bonding quality, resulting in low experimental efficiency. Summary of the Invention

[0004] In a first aspect, the present invention provides a solid-liquid composite casting parameter testing mold, comprising a base mold made of sand core material, a cavity provided in the base mold, at least two tubular pre-embedded metal parts provided in the cavity, the cavity including at least partially circular connecting cavity, the pre-embedded metal parts being disposed in the connecting cavity, the circular portion of the connecting cavity and the pre-embedded metal parts being coaxially arranged, the distance between the circular portion of the connecting cavity and the outer surface of the pre-embedded metal parts being the casting cladding thickness of the pre-embedded metal parts, and any parameter or any combination of parameters among the inner diameter, wall thickness, material, outer surface treatment process, and casting cladding thickness of the at least two pre-embedded metal parts being different.

[0005] In an optional embodiment, at least two embedded metal parts are longitudinally distributed along the height direction within the cavity.

[0006] In an optional embodiment, the embedded metal part is horizontally arranged inside the cavity.

[0007] In an optional embodiment, both ends of the tubular embedded metal part are exposed outside the base mold.

[0008] In an optional embodiment, a cooling medium is provided inside the tubular embedded metal component.

[0009] In an optional embodiment, the tubular embedded metal part is filled with a granular filler material that has a thermally conductive effect.

[0010] In an optional implementation, the base mold is cast by gravity casting or low-pressure casting.

[0011] In an optional implementation, the base mold is cast using a bottom-pouring method.

[0012] In an optional implementation, a fixing component is also included for supporting the embedded metal part.

[0013] Secondly, the present invention provides a method for testing solid-liquid composite casting parameters, using a solid-liquid composite casting parameter testing mold according to any of the foregoing embodiments, comprising the following steps: Molten metal is poured into the cavity of the base mold, and the molten metal is allowed to coat the embedded metal parts and solidify to form a cladding metal, thus obtaining at least two solid-liquid composite casting components. The bonding quality between the embedded metal parts and the cladding metal in the solid-liquid composite casting components is tested. Based on the difference in bonding quality between the at least two solid-liquid composite casting components, the influence of relevant parameters or combinations of relevant parameters among the inner diameter, wall thickness, material, outer surface treatment process, and casting cladding thickness of the embedded metal parts on the bonding quality is evaluated.

[0014] The solid-liquid composite casting parameter testing mold and method provided by this invention have the following beneficial effects: 1. A tubular embedded metal part is set in the cavity of the base mold. The tubular embedded metal part can control parameters such as inner diameter, wall thickness, material, and outer surface treatment process. The embedded metal part is located in the joint cavity, which can also control the casting and covering thickness of the embedded metal part. At the same time, multiple embedded metal parts can be set in the cavity. The parameters such as inner diameter, wall thickness, material, outer surface treatment process, and casting and covering thickness of multiple embedded metal parts can be set and adjusted independently, so as to form a variety of parameter comparisons. There are many types of process parameters that can be verified, and it is convenient to verify the influence of multiple process parameters or parameter combinations on the joint quality at one time. 2. The tubular embedded metal parts also facilitate the filling of solid particles or the introduction of liquid media to control heat dissipation conditions, thereby verifying the impact of heat dissipation on the bonding quality during the solid-liquid composite casting process. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a solid-liquid composite casting component obtained by the solid-liquid composite casting parameter testing method provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the solid-liquid composite casting parameter testing mold provided in an embodiment of the present invention; Figure 3 A cross-sectional schematic diagram of a solid-liquid composite casting parameter testing mold provided in an embodiment of the present invention.

[0017] Illustration: 100 - base mold; 200 - embedded metal parts; 300 - covering metal; 400 - fixing components.

[0018] Explanation of main component symbols: 100-base mold; 110-joining cavity; 200-embedded metal part; 300-cladding metal; 400-fixing component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] This invention provides a solid-liquid composite casting parameter testing mold, such as... Figure 2 and Figure 3 As shown, the system includes a base mold 100 made of sand core material. The base mold 100 has a cavity, within which three tubular embedded metal parts 200 are installed. Each cavity includes a partially circular connecting cavity 110. The embedded metal parts 200 are located within the connecting cavity 110, with the circular portion of the connecting cavity 110 and the embedded metal parts 200 coaxially arranged. The distance between the circular portion of the connecting cavity 110 and the outer surface of the embedded metal parts 200 is the casting coverage thickness of the embedded metal parts 200. The casting coverage thicknesses of the three embedded metal parts 200 are all different. Figure 2 This is a schematic diagram of the structure of the solid-liquid composite casting parameter testing mold provided in an embodiment of the present invention. Figure 3 This is a cross-sectional schematic diagram of the solid-liquid composite casting parameter testing mold provided in an embodiment of the present invention. Figure 3 The structural relationship between the embedded metal part 200 and the connecting cavity 110 is shown.

[0027] This embodiment also provides a method for testing solid-liquid composite casting parameters. Using the aforementioned solid-liquid composite casting parameter testing mold, the method includes the following steps: pouring molten metal into the cavity of the base mold 100, waiting for the molten metal to cover the embedded metal part 200 and solidify to form a covering metal 300, obtaining three solid-liquid composite casting components, detecting the bonding quality between the embedded metal part 200 and the covering metal 300 in the solid-liquid composite casting components, and evaluating the influence of the pouring covering thickness of the embedded metal part 200 on the bonding quality based on the difference in bonding quality among the three solid-liquid composite casting components.

[0028] Figure 1 This is a schematic diagram of the solid-liquid composite casting component obtained by the solid-liquid composite casting parameter testing method provided in this embodiment, in which the riser, gating system and other metal entities are retained.

[0029] like Figure 1 and 2 As shown, the three embedded metal parts 200 are bonded to the surrounding molten metal. The three embedded metal parts 200 have the same parameters such as inner diameter, wall thickness, material, and outer surface treatment process, and only the casting and covering thickness is different. At this time, by analyzing the bonding quality between the three embedded metal parts 200 and the covering metal 300, the influence of the casting and covering thickness of the embedded metal parts 200 on the bonding quality can be evaluated.

[0030] The specific method for analyzing the bonding quality between the three embedded metal parts 200 and the cladding metal 300 can be common technical means such as X-ray or metallographic inspection, and this application does not limit this.

[0031] Among them, the surface treatment process of the embedded metal part 200 can be process parameters that may affect the bonding quality in solid-liquid composite casting, such as roughness and plating process.

[0032] In this embodiment, the base mold 100 is cast using gravity casting or low-pressure casting, and bottom-pouring is employed. The combination of gravity casting or low-pressure casting and bottom-pouring achieves stable mold filling, ensuring the quality of the solid-liquid composite casting.

[0033] In this embodiment, multiple embedded metal parts 200 are longitudinally distributed along the height direction within the cavity, and the embedded metal parts 200 are horizontally arranged within the cavity.

[0034] In this embodiment, as Figure 3 As shown, the circular portion of the mating cavity 110 is a semicircle. In other embodiments, the circular portion of the mating cavity 110 may be larger or smaller than a semicircle, or may be a complete circle.

[0035] In some embodiments, the parameters of the multiple embedded metal parts 200, such as inner diameter, wall thickness, material, and outer surface treatment process, are all different. For example, the multiple embedded metal parts 200 have different wall thicknesses, while other parameters, such as inner diameter, material, outer surface treatment process, and casting cladding thickness, are the same. In this case, the influence of different wall thicknesses on the bonding quality can be evaluated by detecting the bonding quality between the embedded metal parts 200 and the cladding metal 300 in the solid-liquid composite casting component.

[0036] In some embodiments, the combinations of multiple parameters such as inner diameter, wall thickness, material, and outer surface treatment process of the multiple embedded metal parts 200 are different, that is, at least two process parameters are different among the multiple embedded metal parts 200. For example, when it is necessary to verify the wall thickness and outer surface treatment process at the same time, the multiple embedded metal parts 200 have different wall thicknesses and outer surface treatment processes, while other parameters, such as inner diameter, material, and casting cladding thickness, are the same. In this case, the influence of different combinations of wall thickness and outer surface treatment processes on the bonding quality can be evaluated by detecting the bonding quality between the embedded metal parts 200 and the cladding metal 300 in the solid-liquid composite casting component.

[0037] In some embodiments, at least a portion of the tubular embedded metal parts 200 contain a cooling medium. This allows for control of the heat dissipation conditions of multiple embedded metal parts 200, thereby verifying the impact of heat dissipation on the bonding quality during the solid-liquid composite casting process. For example, some tubular embedded metal parts 200 may contain a cooling medium, while others may not, and / or different tubular embedded metal parts 200 may contain different cooling media. In these embodiments, the cooling medium can specifically be compressed air, water, oil, etc.; any cooling medium that can be filled into the tubes of the embedded metal parts 200 is suitable for this application. In other embodiments, the cooling medium can be further combined with parameters such as the inner diameter, wall thickness, material, and outer surface treatment process of the embedded metal parts 200 for verification.

[0038] In some embodiments, at least a portion of the tubular embedded metal parts 200 are filled with granular, thermally conductive filler material. This filler material not only controls the heat dissipation conditions of multiple embedded metal parts 200, thereby verifying the impact of heat dissipation on the bonding quality during the solid-liquid composite casting process, but also provides support for the tubular embedded metal parts 200, improving their internal support effect when bonded to the molten metal, thus increasing the number of verifiable process parameters. For example, some tubular embedded metal parts 200 may contain filler material, while others may not, and / or different tubular embedded metal parts 200 may contain different filler materials. In these embodiments, the filler material can specifically be sand, metal particles, etc.; any granular material with thermal conductivity is suitable for this application. In other embodiments, the filler material can be further combined with parameters such as the inner diameter, wall thickness, material, and external surface treatment process of the embedded metal parts 200 for verification.

[0039] In some embodiments, such as Figure 2 As shown, both ends of the tubular embedded metal part 200 are exposed in the base mold 100 to facilitate the delivery of cooling medium or filling material into the embedded metal part 200.

[0040] In some embodiments, the base mold 100 further includes a fixing component 400, which is used to support the embedded metal part 200. Especially when the embedded metal part 200 is long, the fixing component 400 can prevent the embedded metal part 200 from shifting.

[0041] In some embodiments, the number of embedded metal parts 200 is set to two, four or more, and the number of embedded metal parts 200 can be specifically selected according to the process parameters that need to be verified.

[0042] The inner diameter of the embedded metal part 200 is preferably 10mm~20mm, the wall thickness is preferably 3mm~9mm, and the length is preferably 300mm~800mm. The above parameters are only preferred options and do not constitute a limitation on the use of this application.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid-liquid composite casting parameter testing mold, characterized in that, The system includes a base mold (100) made of sand core material, a cavity provided in the base mold (100), at least two tubular embedded metal parts (200) provided in the cavity, the cavity including a connecting cavity (110) that is at least partially circular, the embedded metal parts (200) being disposed in the connecting cavity (110), the circular portion of the connecting cavity (110) and the embedded metal parts (200) being coaxially arranged, the distance between the circular portion of the connecting cavity (110) and the outer surface of the embedded metal parts (200) being the casting and covering thickness of the embedded metal parts (200), and at least two of the embedded metal parts (200) having different inner diameter, wall thickness, material, outer surface treatment process, casting and covering thickness, or any combination of parameters.

2. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The at least two pre-embedded metal parts (200) are longitudinally distributed along the height direction within the cavity.

3. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The embedded metal part (200) is horizontally arranged inside the cavity.

4. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, Both ends of the tubular embedded metal part (200) are exposed in the base mold (100).

5. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The tubular embedded metal part (200) contains a cooling medium.

6. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The tubular embedded metal part (200) is filled with a granular filler material that has a thermally conductive effect.

7. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The casting method of the base mold (100) is gravity casting or low-pressure casting.

8. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, The casting method of the base mold (100) is bottom casting.

9. The solid-liquid composite casting parameter testing mold according to claim 1, characterized in that, It also includes a fixing component (400) for supporting the embedded metal part (200).

10. A method for testing parameters in solid-liquid composite casting, characterized in that, The solid-liquid composite casting parameter testing mold according to any one of claims 1-9 includes the following steps: Molten metal is poured into the cavity of the base mold (100), and the molten metal is allowed to cover the embedded metal part (200) and solidify to form a cladding metal (300) to obtain at least two solid-liquid composite casting components. The bonding quality between the embedded metal part (200) and the cladding metal (300) in the solid-liquid composite casting components is detected. Based on the difference in bonding quality between the at least two solid-liquid composite casting components, the influence of relevant parameters or combinations of relevant parameters in the inner diameter, wall thickness, material, outer surface treatment process, and pouring cladding thickness of the embedded metal part (200) on the bonding quality is evaluated.

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