A test bar molding mold

Abstract

The present application relates to the technical field of casting, in particular to a test bar forming die. The test bar forming die comprises a pouring seat and a forming seat. The pouring seat is provided with a containing groove and a pouring gate which is communicated with the containing groove. The forming seat is arranged in the containing groove and is composed of a plurality of core members which are located on the same circumference. The type cavity which is communicated with the pouring gate is formed by the cooperation between two adjacent core members. The plurality of type cavities are located on the circumference with the pouring gate as the center. Therefore, the forming time and conditions of the test bar in each type cavity are similar, the difference of the mechanical properties of each test bar is small, and the accuracy of the subsequent mechanical property test data is improved.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a test bar forming mold. Background Technology

[0002] Mechanical property test bars (referred to as test bars) can be used to understand the tensile strength, bending strength, hardness, toughness and other performance indicators of materials under different conditions, so as to ensure the quality and reliability of the corresponding components of the material in the engineering field and avoid failures and accidents during use.

[0003] Currently, most test bars for metallic materials are formed by casting. Test bars are directly poured into molds or simple rods, which are then machined to the required dimensions. The mechanical properties and microstructure of the test bars are then tested, observed, and analyzed to obtain the mechanical property level of the metallic material.

[0004] In related technologies, the cavities of the test bar mold are arranged symmetrically from left to right. Most test bar molds are single-mold molds (one or two pieces), allowing for the molding of a limited number of test bars at a time. To meet experimental requirements, multiple rounds of casting are necessary, resulting in a long casting cycle. When designing a larger number of test bar mold cavities, the single casting time is extended. Furthermore, the symmetrical arrangement of the cavities leads to significant differences in the molding time of test bars within each cavity, resulting in greater disparities in the mechanical properties of the test bars formed in each cavity and affecting the accuracy of subsequent testing experiments.

[0005] Therefore, there is an urgent need for a test bar molding die to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a test bar molding mold to solve the problems in the prior art and reduce the differences between multiple test bars formed by one casting.

[0007] To achieve the above objectives, the following technical solution is provided:

[0008] A test bar molding die, comprising:

[0009] A pouring stand having a receiving groove and a pouring port communicating with the receiving groove;

[0010] A molding seat is disposed in the receiving groove. The molding seat is composed of multiple core parts located on the same circumference. Two adjacent core parts cooperate to form a cavity that communicates with the pouring gate. The multiple cavities are located on a circumference with the pouring gate as the center.

[0011] As an optional solution for the test bar molding mold, the cavity includes a molding part, a connecting part and a buffer part connected sequentially from top to bottom, and the buffer part is connected to the pouring gate.

[0012] As an optional solution for the test bar molding mold, the buffer part includes a horizontal channel and a slag collection channel connected at an obtuse angle. The horizontal channel extends in a horizontal direction, and the inner end of the horizontal channel can be connected to the pouring port, while the outer end of the horizontal channel is connected to the slag collection channel.

[0013] As an optional solution for the test bar molding die, the casting seat also has a flow stabilizing groove, which is located below the cavity and is used to connect the cavity and the casting gate.

[0014] As an optional solution for the test bar molding mold, the flow stabilizing groove is annular, with the inside of the flow stabilizing groove connected to the pouring port and the outside of the flow stabilizing groove connected to the cavity.

[0015] As an optional solution for the test bar molding die, the outer wall of the molding seat is fitted with the inner wall of the receiving groove.

[0016] As an optional solution for the test bar molding mold, the casting seat includes a base and a flow stabilizer. The base is provided with the receiving groove, the molding seat is annular, and the flow stabilizer is located inside the annulus of the molding seat.

[0017] As an optional solution for the test rod forming mold, the outer wall of the flow stabilizer is provided with a first limiting surface, and the inner wall of the forming seat is provided with a second limiting surface. The second limiting surface cooperates with the first limiting surface and is located above the first limiting surface.

[0018] As an optional option for the test bar molding die, the number of the casting seats is at least two, and the at least two casting seats include a first casting seat and / or a second casting seat;

[0019] In the first casting seat, the base is provided with the casting port, and the flow stabilizer is a wall structure with one end open. The flow stabilizer is installed on the casting port with its opening facing the casting port. The flow stabilizer and / or the base are provided with a connecting groove, so that the liquid flowing in from the casting port can enter the cavity after passing through the connecting groove; and / or

[0020] In the second casting seat, the flow stabilizer is a wall structure with openings at both ends. One end of the flow stabilizer is covered on the chassis, and the other end forms the casting port. The flow stabilizer and / or the chassis are provided with a connecting groove, so that the liquid flowing in from the casting port can enter the cavity after passing through the connecting groove.

[0021] As an optional solution for the test bar forming mold, a plurality of the connecting grooves are arranged at intervals along the circumference of the flow stabilizer.

[0022] As an optional embodiment of the test bar molding die, the test bar molding die further includes a filter screen, which is disposed in the channel from the pouring port to the flow stabilizing tank.

[0023] As an optional solution for the test bar molding mold, the flow stabilizing groove is annular, with the inside of the flow stabilizing groove connected to the pouring port and the outside of the flow stabilizing groove connected to all the cavities.

[0024] As an optional option for the test bar molding die, all the cavities are located on a circumference centered on the gating gate.

[0025] As an optional option for the mold for forming the test bar, the diameter of the pouring gate gradually decreases along the direction of molten metal flow.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The test bar molding die provided by the present invention includes a pouring seat and a molding seat. The pouring seat has a receiving groove and a pouring port connected to the receiving groove. The molding seat is disposed in the receiving groove and is composed of multiple core parts located on the same circumference. Two adjacent core parts cooperate to form a cavity connected to the pouring port. The multiple cavities are located on a circumference with the pouring port as the center, so that the molding time and molding conditions of the test bars in each cavity are similar, ensuring that the mechanical properties of each test bar are less different and improving the accuracy of subsequent mechanical property test data. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the first test bar forming mold provided in an embodiment of the present invention;

[0030] Figure 2 A cross-sectional schematic diagram of the first type of test bar forming mold provided in an embodiment of the present invention;

[0031] Figure 3 This is an exploded view of the first type of test bar forming mold provided in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A bottom-view schematic diagram of the intermediate flow stabilizer;

[0033] Figure 5This is a schematic diagram of the structure of the second type of test bar forming mold provided in an embodiment of the present invention;

[0034] Figure 6 A cross-sectional schematic diagram of the second type of test bar forming mold provided in an embodiment of the present invention;

[0035] Figure 7 This is an exploded view of the second type of test bar molding die provided in an embodiment of the present invention.

[0036] Figure label:

[0037] 10. Molding base; 101. Core component; 102. Cavity; 1021. Molding part; 1022. Connecting part; 1023. Buffer part;

[0038] 20a. Pour base; 11. Base plate; 111. Receiving groove; 112. Flow stabilizing groove; 113. Pour gate; 12. Flow stabilizing component; 121. Connecting groove;

[0039] 20b, pouring seat; 21, base plate; 211, receiving groove; 212, flow stabilizing groove; 213, recess; 214, connecting groove; 22, flow stabilizing component; 221, pouring gate. Detailed Implementation

[0040] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0041] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0043] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0044] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0045] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0046] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0047] In related technologies, test bar forming molds are mainly used for forming test bars for mechanical property testing. These molds have the following disadvantages: 1) The number of cavities in the mold is limited, allowing only a small number of test bars to be formed in a single pour. 2) The cavities of the mold are formed by symmetrical inner cores. When the number of cavities is large, the single pouring time is long. Furthermore, due to the varying distances between the pouring gate and different cavities, the forming time and conditions for the test bars in each cavity differ significantly, ultimately affecting the mechanical properties of the test bars and resulting in lower accuracy in subsequent tests. 3) During the pouring process, small particles can easily fall from the cavity walls into the molten metal, leading to defects such as porosity and sand inclusions in the test bars. 4) Existing test bar forming methods include gravity pouring and low-pressure pouring. Different molds need to be designed for different forming methods, increasing mold development costs.

[0048] In view of this, this embodiment provides a test bar molding die, which aims to solve any one or any two or more of the above four problems by optimizing the die structure, so as to meet the needs of casting technicians for test bars for mechanical property testing.

[0049] To make the technical problems to be solved, the technical solutions adopted, and the technical effects achieved by the test bar molding die clearer, the technical solution of the test bar molding die will be further explained below with reference to the accompanying drawings and specific implementation methods.

[0050] Based on the inventive concept of this invention, this embodiment provides a first type of test bar molding die, which can be used for low-pressure casting molding. Details are as follows:

[0051] Figure 1 A schematic diagram of the structure of the first test bar molding die provided in this embodiment is shown. Figure 2 A cross-sectional schematic diagram of the first type of test bar molding die provided in this embodiment is shown. (See attached diagram.) Figures 1 to 2As shown, the first type of test bar molding die includes a casting seat 20a and a molding seat 10. The casting seat 20a has a receiving groove 111 and a casting port 113 communicating with the receiving groove 111. The molding seat 10 is disposed in the receiving groove 111 and has a plurality of cavities 102. The casting port 113 is located below the cavity 102, and the diameter of the casting port 113 gradually decreases along the flow direction of the molten metal. For example, the casting port 113 can be an inverted cone shape. During casting, the molten metal is injected from the casting port 113, and the molten metal slowly fills the cavity 102 of the molding seat 10 from bottom to top. After the molten metal cools, it is demolded to obtain a preliminary test bar. Then, the preliminary test bar is subjected to simple machining to obtain the final test bar. In this embodiment, the molding seat 10 is placed in the receiving groove 111 of the casting seat 20a, and no other connecting parts are needed to fix the molding seat 10 and the casting seat 20a. Of course, in other embodiments, the molding base 10 and the casting base 20a can also be detachably fixedly connected by a connector, which is not limited here.

[0052] See also Figures 1 to 2 The molding base 10 has multiple cavities 102 arranged on a circle with the gating gate 113 as the center. In this way, the distance between the gating gate 113 and each cavity 102 is equal (theoretically, but there may be slight differences in practice). This makes the molding time and molding conditions of the test rods in each cavity 102 similar, ensuring that the mechanical properties of each test rod are less different and improving the accuracy of subsequent mechanical property test data.

[0053] In this embodiment, the molding base 10 is composed of multiple cores 101 arranged in a circle. Adjacent cores 101 cooperate to form a cavity 102 communicating with the pouring gate 113. All cores 101 have the same structure and dimensions, making them standardized parts. This not only reduces the manufacturing cost of the molding base 10, but also allows for individual replacement of a single core 101 if it breaks, without discarding the entire molding base 10, thus reducing material costs and improving manufacturing efficiency. Of course, in other embodiments, the molding base 10 can also be a one-piece molded structure. Compared to a split structure, the manufacturing cost of a one-piece molded structure is higher, but it also has advantages such as fewer parts and easier assembly.

[0054] Understandably, each core component 101 has grooves on both its left and right sides. The grooves of one core component 101 mate with the grooves of the other core component 101 to form a cavity 102, while ensuring that the end faces of the two core components 101 are in contact. Since the fluidity of molten metal is generally low, when the end faces of two adjacent core components 101 are in contact, the molten metal will not overflow between the two core components 101, and no additional sealing structure is required.

[0055] In this embodiment, there are 12 core components 101 arranged in a circle. Of course, in other embodiments, the number of core components 101 can be any number, which can be designed according to the number of test bars formed in a single molding process, and is not limited here.

[0056] To facilitate the overall positioning of the molding base 10, the outer wall of the molding base 10 is fitted against the inner wall of the receiving groove 111. When the molding base 10 is placed in the receiving groove 111 of the casting base 20a, individual core parts 101 are successively placed into the receiving groove 111, and the outer wall of the core part 101 is fitted against the inner wall of the receiving groove 111, thereby ensuring the positioning and assembly of the core part 101. In this embodiment, the molding base 10 is a rotating body, and the outer wall of the molding base 10 that mates with the receiving groove 111 is circular, and the receiving groove 111 is also circular. Of course, in other embodiments, the outer wall of the molding base 10 can also be other shapes, and the design can be customized as needed, without limitation here.

[0057] Figure 3 An exploded view of the first type of test bar molding die provided in this embodiment is shown. (See attached diagram.) Figure 3 Combination Figure 2 As shown, the casting base 20a includes a base 11, on which a receiving groove 111 and a flow stabilizing groove 112 are provided. The receiving groove 111 surrounds the flow stabilizing groove 112, which is annular, and the bottom surface of the flow stabilizing groove 112 is lower than the bottom surface of the receiving groove 111. The inner ring of the flow stabilizing groove 112 is connected to the casting port 113, and the outer ring of the flow stabilizing groove 112 is connected to the cavity 102. Furthermore, the casting port 113, the flow stabilizing groove 112, and the receiving groove 111 are arranged in concentric circles. During the casting process, the molten metal flowing in from the casting port 113 needs to enter the flow stabilizing groove 112 first. The flow stabilizing groove 112 can buffer and stabilize the flow rate of the molten metal, avoiding splashing, air entrapment, and other phenomena. After the flow stabilizing groove 112 is full of molten metal, the molten metal can slowly flow into the cavity 102 from bottom to top. In addition, since the flow stabilizing tank 112 is annular and the molten metal inside the flow stabilizing tank 112 is a whole, the upward flow speed of the molten metal in any direction is relatively uniform, which ensures the injection speed of each cavity 102 and reduces the difference in the test bars formed by each cavity 102.

[0058] In this embodiment, the cavity 102 includes a forming part 1021, a connecting part 1022 and a buffer part 1023 arranged and connected in sequence. The buffer part 1023 is connected to the flow stabilizing tank 112. By setting the buffer part 1023 and the connecting part 1022, the molten metal can be further buffered to ensure the forming quality of the test bar.

[0059] In this embodiment, the casting base 20a also includes a flow stabilizer 12. The base 11 is provided with a casting port 113. The flow stabilizer 12 is a wall structure with one end open. The flow stabilizer 12 covers the casting port 113 with its opening facing the casting port 113. The flow stabilizer 12 is provided with a connecting groove 121. The molten metal flowing in from the casting port 113 first flows into the flow stabilizer 112 through the connecting groove 121, and then enters the buffer part 1023 and the connecting part 1022 of the cavity 102. Finally, it enters the forming part 1021 of the cavity 102. After the molten metal cools down, the initial test bar can be obtained.

[0060] Furthermore, the buffer section 1023 includes a horizontally extending transverse channel and a slag collection channel connecting the outer end of the transverse channel. The slag collection channel is set at an obtuse angle to the transverse channel, and the connecting section 1022 is connected to the middle position of the transverse channel. When the stabilizing tank 112 is filled with molten metal, the molten metal flows into the transverse channel of the buffer section 1023. At this time, the slag that is washed off at the front end of the molten metal will flow with the molten metal to the slag collection channel at the outer edge of the transverse channel first. The clean molten metal will flow into the forming section 1021 along the connecting section 1022 and slowly fill the mold from bottom to top.

[0061] In this embodiment, the molding seat 10 is annular and can be placed in the receiving groove 111 of the chassis 11. The flow stabilizer 12 is located in the middle of the annular shape of the molding seat 10, and the center line of the flow stabilizer 12 coincides with the center line of the molding seat 10. Furthermore, the center line of the flow stabilizer 12 coincides with the center line of the gating gate 113, thus ensuring that the distance between the gating gate 113 and any cavity 102 in the molding seat 10 is the same.

[0062] The flow stabilizer 12 has a first limiting surface on its outer wall, and the forming seat 10 has a second limiting surface on its inner wall. The second limiting surface mates with the first limiting surface and is located above the first limiting surface. Thus, the forming seat 10 can limit the flow stabilizer 12, ensuring that the flow stabilizer 12 remains stable during pouring. It is understood that the forming seat 10 is relatively large in size and weight. The second limiting surface of the forming seat 10 pressing against the first limiting surface of the flow stabilizer 12 ensures that the flow stabilizer 12 remains stable during the pouring of molten metal.

[0063] In this embodiment, the flow stabilizer 12 is a rotating body, and the stepped surface on its outer sidewall forms a first limiting surface. A boss is provided on the inner sidewall of the molding base 10, and the lower surface of the boss forms a second limiting surface. Specifically, each core 101 of the molding base 10 has a protrusion structure on its inner sidewall, and the protrusion structures of all cores 101 are connected and fitted to form a boss.

[0064] When assembling the mold for forming the test bar, the flow stabilizer 12 is first assembled onto the chassis 11, and then multiple core components 101 are assembled in sequence. This can effectively prevent sand from being rubbed off during the assembly of the core components 101, which would cause sand holes to form inside the test bar, and also speeds up the assembly process.

[0065] The test bar molding die also includes a filter screen. A filter screen is installed in the flow channel between the pouring port 113 and the cavity 102. The filter screen can filter out fine inclusions in the molten metal, ensuring that clean molten metal flows smoothly and evenly into the flow stabilizing tank 112, and then into each cavity 102 of the molding seat 10. Furthermore, the filter screen is installed at the position where the molten metal flows from the pouring port 113 into the flow stabilizing component 12, thereby filtering the molten metal entering the flow stabilizing component 12 to ensure that there are no impurities or very few impurities in the molten metal entering the flow stabilizing tank 112 and the cavity 102, improving the molding quality of the test bar. The filter screen can be a ceramic filter screen or a filter screen made of other high-temperature resistant materials; there are no restrictions on this.

[0066] Figure 4 It shows Figure 3 A bottom view of the intermediate flow stabilizer 12. (See attached image.) Figure 4 Combination Figure 2 As shown, the flow stabilizer 12 has multiple connecting grooves 121, which are spaced circumferentially around the bottom end face of the flow stabilizer 12. In this embodiment, the connecting grooves 121 do not penetrate the sidewall of the flow stabilizer 12, and part of the connecting grooves 121 are located above the flow stabilizer 112. After the molten metal enters from the pouring port 113, it flows into the connecting grooves 121 and then into the flow stabilizer 112. Of course, in other embodiments, the connecting grooves 121 can also penetrate the sidewall of the flow stabilizer 12, or the connecting grooves 121 can be provided on the chassis 11 to facilitate the molten metal flowing from the pouring port 113 to enter the flow stabilizer 112 through the connecting grooves 121. In this case, a mounting surface for the filter screen needs to be designed on the chassis 11, and the position of the filter screen should be lower than the position of the connecting grooves 121 to ensure that the filter screen can effectively filter the molten metal flowing into the flow stabilizer 112.

[0067] In this embodiment, the pouring gate 113 is disposed on the base 11 of the pouring seat 20a. The base 11 also has a receiving groove 111 and a flow stabilizing groove 112. The forming seat 10 is installed in the receiving groove 111 and is located above the base 11. Based on the assembly method of the base 11 and the forming seat 10, the pouring gate 113 is positioned lower than the positions of the cavities 102 within the forming seat 10. This pouring seat 20a is suitable for low-pressure pouring. In other words, when pouring and forming the test bar, the first type of test bar forming mold needs to provide a certain pressure to the molten metal to ensure that the molten metal can completely fill the cavities 102 of the forming seat 10.

[0068] Based on the inventive concept of this invention, this embodiment also provides a second type of test bar molding die, which can be used for gravity casting. Details are as follows:

[0069] Figure 5A schematic diagram of the structure of the second type of test bar molding die provided in this embodiment is shown. Figure 6 A cross-sectional view of the second type of test bar molding die provided in this embodiment is shown. (See figure) Figures 5 to 6 As shown, the second type of test bar molding die includes a casting seat 20b and a molding seat 10. The casting seat 20b has a receiving groove 211 and a casting port 221 connected to the receiving groove 211. The molding seat 10 is disposed in the receiving groove 211 and has several cavities 102. The inlet of the casting port 221 is not lower than the highest position of the cavity 102, and the diameter of the casting port 221 gradually decreases along the flow direction of the molten metal. For example, the casting port 221 can be conical. During casting, the molten metal is injected from the casting port 221. The molten metal first flows downward and then slowly fills the cavity 102 of the molding seat 10 from bottom to top. After the molten metal cools, it is demolded to obtain a preliminary test bar. Then, the preliminary test bar is subjected to simple machining to obtain the final test bar.

[0070] The second type of test rod forming mold has the same basic inventive concept as the first type of test rod forming mold, and the forming seat 10 of the second type of test rod forming mold has the same structure as the forming seat 10 of the first type of test rod forming mold, which will not be described again here.

[0071] The main difference between the second type of test bar molding die and the first type of test bar molding die is that the structure of the casting seat 20b is different. The casting seat 20b of the second type of test bar molding die is suitable for gravity casting.

[0072] Figure 7 It shows Figure 5 An exploded view of the second type of test bar molding die. (See diagram below.) Figure 7 Combination Figure 6 As shown, the casting base 20b includes a base 21 and a flow stabilizer 22. The base 21 has a receiving groove 211 and a flow stabilizing groove 212. The casting port 221 is formed by the flow stabilizer 22, instead of the casting port 113 in the first type of test bar molding die described above, which is located on the base 11. Specifically, the flow stabilizer 22 is a wall structure with openings at both ends. One end of the flow stabilizer 22 covers the base 21, and the other end forms the casting port 221. The base 21 has a connecting groove 214. The molten metal flowing in from the casting port 221 flows through the connecting groove 214, then enters the flow stabilizing groove 212, and finally enters the cavity 102. The casting port 221 formed by the flow stabilizer 22 is not lower than the upper surface of the molding base 10 to facilitate the molten metal casting process.

[0073] A recess 213 is provided on the chassis 21 opposite to the flow stabilizer 22 to buffer the molten metal flowing in from the pouring port 221 to a certain extent, preventing the molten metal from impacting the forming seat 10 at high speed. Furthermore, a connecting groove 214 is provided on the upper part of the peripheral wall of the recess 213. The connecting groove 214 penetrates the peripheral wall of the recess 213, and the molten metal enters the flow stabilizer 212 through the connecting groove 214.

[0074] Based on the structure of the chassis 21, the filter screen needs to be set above the connecting groove 214 of the chassis 21 to filter the molten metal flowing in from the pouring port 221, so as to ensure that the molten metal entering the recess 213 and the flow stabilizing groove 212 of the chassis 21 is filtered through the filter screen, thereby improving the molding quality of the test bar.

[0075] In summary, it can be understood that the casting seat in this test bar molding die can be of two types: casting seat 20a and casting seat 20b. There can be multiple casting seats 20a, and their dimensions can vary. Similarly, there can be multiple casting seats 20b, and their dimensions can vary. The molding seat 10 can cooperate with different types of casting seats through receiving grooves on the casting seats to achieve low-pressure casting or gravity casting. The main difference between gravity casting and low-pressure casting lies in the height relationship between the sprue and the cavity. When the sprue is not lower than the cavity, gravity casting is usually selected; when the sprue is lower than the cavity, low-pressure casting is usually selected. By setting receiving grooves on different types of casting seats that match the molding seat, the molding seat can be used for both gravity casting and low-pressure casting, thereby improving the standardization of the test bar molding die and reducing the development cost of different dies.

[0076] Compared with related technologies, the first and second test rod forming molds provided in this embodiment have the following advantages: 1) By designing the test rod forming mold to consist of a casting seat and a forming seat 10, the forming seat 10 can be installed through the receiving groove on the casting seat. Thus, by designing receiving grooves that match the forming seat 10 on different types of casting seats, the forming seat 10 can be matched with casting seats suitable for gravity casting or casting seats suitable for low-pressure casting, improving the versatility of the forming seat 10 and reducing the mold development cost. 2) By setting the forming seat 10 to be spliced ​​together from multiple core parts 101 arranged along the same circumference, and by forming a cavity 102 between two adjacent core parts 101, the required number of core parts 101 can be selected according to the number of test rods to be formed, increasing the number of test rods formed in a single casting. 3) The cavities 102 of the forming seat 10 are arranged in a ring around the pouring gate 221, thus ensuring that the forming conditions of the test bars in each cavity 102 are similar, thereby reducing the differences in the formed test bars and ensuring the accuracy and reliability of the output data and test analysis conclusions. 4) By setting a filter screen at the pouring gate 221, the molten metal can be filtered, reducing defects such as porosity and sand inclusions, and also facilitating the smooth flow of the molten metal.

[0077] The test bar forming mold provided in this embodiment can also be other combinations of the first and second test bar forming molds described above, which will not be illustrated here. The molten metal can be molten aluminum or other molten metals, and there are no limitations on this.

[0078] Note that in the description of this specification, references to terms such as "an embodiment," "in other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A test rod forming mold, characterized in that, include: The pouring base (20a, 20b) has a receiving groove (111, 211) and a pouring port (113, 221) communicating with the receiving groove (111, 211). A molding base (10) is provided in the receiving groove (111, 211). The molding base (10) is composed of multiple core parts (101) located on the same circumference. Two adjacent core parts (101) cooperate to form a cavity (102) that communicates with the pouring gate (113, 221). The multiple cavities (102) are located on a circumference with the pouring gate (113, 221) as the center. The cavity (102) includes a molding part (1021), a connecting part (1022) and a buffer part (1023) connected from top to bottom, and the buffer part (1023) is connected to the pouring gate (113, 221); The buffer section (1023) includes a transverse channel and a slag collection channel connected at an obtuse angle. The transverse channel extends horizontally, and the inner end of the transverse channel can be connected to the pouring port (113, 221). The outer end of the transverse channel is connected to the slag collection channel. The casting base (20a, 20b) also has a flow stabilizing groove (112, 212), which is located below the cavity (102) and is used to connect the cavity (102) and the casting gate (113, 221). The flow stabilizing grooves (112, 212) are annular. The inside of the flow stabilizing grooves (112, 212) is connected to the pouring port (113, 221), and the outside of the flow stabilizing grooves (112, 212) is connected to the cavity (102).

2. The test rod forming mold according to claim 1, characterized in that, The outer wall of the molding seat (10) is in contact with the inner wall of the receiving groove (111, 211).

3. The test rod forming mold according to any one of claims 1-2, characterized in that, The casting base (20a, 20b) includes a chassis (11, 21) and a flow stabilizer (12, 22). The chassis (11, 21) is provided with the receiving groove (111, 211). The molding base (10) is annular, and the flow stabilizer (12, 22) is located inside the annulus of the molding base (10).

4. The test rod forming mold according to claim 3, characterized in that, The outer wall of the flow stabilizer (12, 22) is provided with a first limiting surface, and the inner wall of the molding seat (10) is provided with a second limiting surface. The second limiting surface cooperates with the first limiting surface and is located above the first limiting surface.

5. The test rod forming mold according to claim 3, characterized in that, The number of the casting seats (20a, 20b) is at least two, and the at least two casting seats (20a, 20b) include a first casting seat and / or a second casting seat; In the first casting seat, the base (11, 21) is provided with the casting port (113, 221), and the flow stabilizer (12, 22) is a wall structure with one end open. The flow stabilizer (12, 22) covers the casting port (113, 221) with its opening facing the casting port (113, 221). The flow stabilizer (12, 22) and / or the base (11, 21) are provided with a connecting groove (121, 214). Liquid flowing in from the casting port (113, 221) can enter the cavity (102) after passing through the connecting groove (121, 214); and / or In the second casting seat, the flow stabilizer (12, 22) is a wall structure with openings at both ends. One end of the flow stabilizer (12, 22) is covered on the chassis (11, 21), and the other end forms the casting port (113, 221). The flow stabilizer (12, 22) and / or the chassis (11, 21) are provided with a connecting groove (121, 214). Liquid flowing in from the casting port (113, 221) can enter the cavity (102) after passing through the connecting groove (121, 214).

6. The test rod forming mold according to claim 5, characterized in that, Several of the connecting slots (121, 214) are arranged at circumferential intervals along the flow stabilizers (12, 22).

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