Die-casting die for material test piece
By designing die-casting molds with various sample areas and vacuum structures, the problem of single sample specifications in existing technologies has been solved. This enables the production of sample pieces of various specifications in a high vacuum environment, reduces the deviation between laboratory research and the performance of actual die-cast products, and provides a more accurate evaluation of material properties.
Patent Information
- Application Number
- CN202422811657.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing technologies lack die-casting molds capable of producing test pieces of various specifications in a high-vacuum environment, which cannot accurately reflect the performance of integrated heat-free materials in a die-casting environment, leading to discrepancies between laboratory research results and the actual performance of die-cast products.
Design a die-casting mold that includes different types of test piece areas and test piece cavities, including flat, vacuum two-fold, non-vacuum two-fold, S-shaped, and cyclic convex folds, etc. Combined with a vacuum extraction structure, it can produce test pieces of various specifications under high vacuum to simulate the effect of die-casting process on material properties.
By simulating die-casting process conditions, the deviation between laboratory research results and the performance of actual die-cast products can be reduced, providing a reliable basis for material applications in fields such as automobiles and aerospace.
Smart Images
Figure CN223538633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die casting mold technology, and in particular to a die casting mold for material test pieces. Background Technology
[0002] As modern manufacturing moves towards lightweighting and high performance, integrated heat-treatment-free materials are increasingly being used in numerous fields such as automotive and aerospace. These materials eliminate the need for traditional heat treatment processes when manufacturing complex-shaped parts, effectively avoiding problems such as part deformation and reduced dimensional accuracy caused by heat treatment, thereby improving production efficiency and product quality. However, accurate assessment of material properties is crucial for their reliable application in actual production.
[0003] Currently, research on material properties mostly utilizes standard specimens, which are often prepared using conventional processing methods and differ from the actual die-casting production process. In the die-casting of integrated, heat-free materials, the inherent characteristics of the die-casting process, such as high-speed filling and high-pressure solidification, have unique effects on the material's microstructure and properties. Traditional specimen preparation methods cannot accurately reflect the material's performance under die-casting conditions, leading to discrepancies between laboratory research results and the performance of actual die-cast products.
[0004] In actual die-casting production, parts vary in size and shape, which means that test pieces of different specifications are needed to comprehensively study the material's performance under various conditions. For example, the temperature gradient and stress distribution during the solidification process of large die-cast parts differ significantly from those of small die-cast parts. Therefore, test pieces of corresponding specifications are needed to simulate this difference in order to accurately evaluate the material's performance under different size conditions. Currently, there is a lack of die-casting molds capable of producing test pieces of various specifications in a high-vacuum environment to meet the needs of comprehensive performance research on integrated heat-free materials. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a die-casting mold for material test pieces, which aims to simultaneously produce integrated heat-free material test pieces of various specifications.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A die-casting mold for material test pieces includes a fixed mold frame, a movable mold frame, a square iron, and a movable mold base plate arranged sequentially from front to back. The fixed mold frame is provided with a fixed mold core, and the movable mold frame is provided with a movable mold core. The fixed mold core and the movable mold core are combined to form a mold cavity. The mold cavity is divided into a first test piece area, a second test piece area, and a third test piece area. The first test piece area has multiple flat test piece sub-cavities with the same length and different thicknesses. The second test piece area has multiple vacuum two-fold test piece sub-cavities with the same length and different thicknesses. The third test piece area has a non-vacuum two-fold test piece cavity. The movable mold frame is provided with a vacuuming structure for evacuating the first and second test piece areas.
[0008] As a further improvement to the above technical solution, the mold cavity is provided with an S-shaped test piece sub-cavity, and the vacuum structure performs vacuum treatment on the S-shaped test piece sub-cavity.
[0009] As a further improvement to the above technical solution, the mold cavity is provided with a circulating convex test piece sub-cavity, and the vacuum structure performs vacuum treatment on the circulating convex test piece sub-cavity.
[0010] As a further improvement to the above technical solution, the vacuuming structure includes a vacuuming insert disposed on the moving mold core, a pull rod that passes axially through the vacuuming insert and controls the opening and closing of the air extraction port, and a hydraulic cylinder for driving connection with the pull rod.
[0011] The beneficial effects of this utility model are as follows: This die-casting mold, by designing different types of test piece areas and test piece sub-cavities in the mold cavity, can produce test pieces of various specifications in one die casting for performance testing. It simulates the influence of die casting processes (such as high-speed filling, high-pressure solidification, etc.) on the microstructure and properties of materials, making the test pieces more reflective of the material's performance under actual die casting conditions. This reduces the deviation between laboratory research results and the performance of actual die-cast products, providing a stronger basis for the reliable application of actual product molds in the automotive, aerospace and other fields. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the cavity structure on the moving mold core.
[0013] Figure 2 This is a schematic diagram of the structure of the test casting.
[0014] Figure 3 This is a schematic diagram of the structure of the test casting on the moving mold core.
[0015] Figure 4 This is a 3D view of a die-casting mold.
[0016] Explanation of main component symbols: 1-Fixed mold frame, 2-Moving mold frame, 3-Square iron, 4-Moving mold base plate, 5-Moving mold core, 51-First test piece area, 511-Straight test piece sub-cavity, 52-Second test piece area, 521-Vacuum two-fold test piece sub-cavity, 53-Third test piece area, 531-Non-Vacuum two-fold test piece sub-cavity, 54-S-shaped test piece sub-cavity, 55-Circulating convex fold test piece sub-cavity, 56-Gating sleeve, 57-Flow divider cone, 58-Horizontal bypass, 59-Vacuum-evacuation insert, 6-Vacuum-evacuation structure, 71-Two-fold test piece, 72-Straight test piece, 73-S-shaped test piece, 74-Convex fold test piece. Detailed Implementation
[0017] This utility model provides a die-casting mold for material test pieces. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.
[0018] Please see Figures 1 to 4 This utility model provides a die-casting mold for material test pieces, including a fixed mold frame 1, a movable mold frame 2, a square iron 3, and a movable mold base plate 4 arranged sequentially from front to back. The fixed mold frame 1 is provided with a fixed mold core, and the movable mold frame 2 is provided with a movable mold core 5. The fixed mold core and the movable mold core 5 are combined to form a mold cavity. The mold cavity is divided into a first test piece area 51, a second test piece area 52, and a third test piece area 53. The first test piece area 51 is provided with multiple straight test piece sub-cavities 511 of the same length and different thicknesses. The second test piece area 52 is provided with multiple vacuum two-fold test piece sub-cavities 521 of the same length and different thicknesses. The third test piece area 53 is provided with a non-vacuum two-fold test piece cavity 531. The movable mold frame 2 is provided with a vacuuming structure 6 for evacuating the first test piece area 51 and the second test piece area 52.
[0019] In fact, the molten, integrated heat-free material is injected from the sprue sleeve 56 and the flow divider cone 57 into the transverse bypass 58 of the cavity. Then, the transverse bypass 58 is branched to each flat test piece cavity 511, vacuum two-fold test piece cavity 521 and non-vacuum two-fold test piece cavity 531. The flat test piece cavity 511 and the vacuum two-fold test piece cavity 521 flow to the vacuum insert 59 of the vacuum structure 6 through the sprue channel.
[0020] During die casting, the vacuum structure 6 first evacuates the flat test piece sub-cavity 511 and the vacuum two-fold test piece sub-cavity 521 to remove air, reducing the interference of air on the die casting process. This is especially helpful for integrated heat-free materials, as it helps to more realistically simulate the die casting environment and ensures that the quality and performance of the test pieces are closer to the actual die-cast products. The molten integrated heat-free material can be die-cast in the flat test piece sub-cavity 511 of the first test piece area 51 to produce flat test pieces 72 of different thicknesses, in the vacuum two-fold test piece sub-cavity 521 of the second test piece area 52 to produce two-fold test pieces 71 of different thicknesses, and in the non-vacuum two-fold test piece sub-cavity 531 of the third test piece area 53 to produce a comparative two-fold test piece 71. This two-fold test piece 71 is used for test piece die casting under special conditions (without vacuum conditions). This design of different test piece areas and diversified sub-cavities can meet the die casting requirements of test pieces of different shapes and thicknesses. The staff then conducted performance analysis on various flat test pieces 72 and two-fold test pieces 71 through material performance analysis experiments.
[0021] This die-casting mold, by designing different types of test piece areas and test piece sub-cavities within the mold cavity, can produce test pieces of various specifications in a single die-casting process for performance testing. It simulates the impact of die-casting processes (such as high-speed filling and high-pressure solidification) on the microstructure and properties of materials, making the test pieces more reflective of the material's performance under actual die-casting conditions. This reduces the deviation between laboratory research results and the performance of actual die-cast products, providing a stronger basis for the reliable application of actual product molds in the automotive, aerospace, and other fields.
[0022] Furthermore, the mold cavity is divided into S-shaped test piece sub-cavities 54, and the vacuum structure 6 performs vacuum treatment on the S-shaped test piece sub-cavities 54. Adding the S-shaped test piece sub-cavities 54 enriches the variety of test piece shapes, resulting in S-shaped test pieces 73. In actual die-casting production, the shapes of parts are complex and diverse; the S-shaped structure can better simulate some die-cast parts with special curves or bends. This allows the test pieces die-cast using this mold to more broadly cover the possible shapes of actual die-cast products, further improving the comprehensiveness of performance research on integrated heat-free materials in applications with different shaped parts.
[0023] Furthermore, the mold cavity is equipped with a circulating convex-fold test piece sub-cavity 55, and the vacuum structure 6 performs vacuum treatment on the circulating convex-fold test piece sub-cavity 55. In actual die-casting production, there are a large number of parts with thin circulating convex-fold structures or similar complex internal structures. The circulating convex-fold test piece sub-cavity 55 can better simulate these special structures, resulting in convex-fold test pieces 74. This allows the convex-fold test pieces 74 to more comprehensively reflect the performance of the integrated heat-free material in die-casting such complex structural parts, and to study the material's performance under different structural characteristics from more perspectives. For the application of the material in parts with different shapes and structures, its filling situation, solidification characteristics, and microstructure changes during the die-casting process can be analyzed more accurately. This helps to improve the index system for evaluating the performance of integrated heat-free materials and provides more sufficient data support for the reliable application of materials in complex structure die-cast products.
[0024] Specifically, the vacuum structure 6 includes a vacuum insert 59 mounted on the moving mold core 5, a pull rod axially passing through the vacuum insert 59 and controlling the opening and closing of the evacuation port, and a hydraulic cylinder for drive connection with the pull rod. The pull rod in the vacuum structure 6 axially passes through the vacuum insert 59 and controls the opening and closing of the evacuation port, a design that allows for precise control of the evacuation process. When die-casting different test pieces, the evacuation port can be opened or closed at appropriate times as needed, ensuring that the vacuum environment of each test piece during the die-casting process meets its specific simulation requirements. By precisely controlling the timing and duration of evacuation, the die-casting effect can be optimized, making the test piece performance closer to the actual die-cast product.
[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.
Claims
1. A die-casting mold for a material sample, characterized in that, The mold includes a fixed mold frame, a moving mold frame, a square iron, and a moving mold base plate arranged sequentially from front to back. The fixed mold frame is provided with a fixed mold core, and the moving mold frame is provided with a moving mold core. The fixed mold core and the moving mold core are combined to form a mold cavity. The mold cavity is divided into a first test piece area, a second test piece area, and a third test piece area. The first test piece area has multiple flat test piece sub-cavities with the same length and different thicknesses. The second test piece area has multiple vacuum two-fold test piece cavities with the same length and different thicknesses. The third test piece area has one non-vacuum two-fold test piece cavity. The moving mold frame is provided with a vacuuming structure for evacuating the first and second test piece areas.
2. The die-casting mold for the material specimen according to claim 1, characterized in that, The mold cavity is provided with an S-shaped test piece sub-cavity, and the vacuum structure performs vacuum treatment on the S-shaped test piece sub-cavity.
3. The die-casting mold for the material specimen according to claim 1, characterized in that, The mold cavity is equipped with a circulating convex test piece cavity, and the vacuum structure performs vacuum treatment on the circulating convex test piece cavity.
4. The die-casting mold for the material specimen according to any one of claims 1-3, characterized in that, The vacuuming structure includes a vacuuming insert mounted on the moving mold core, a pull rod that passes axially through the vacuuming insert and controls the opening and closing of the vacuum port, and a hydraulic cylinder for driving the pull rod.