A high-throughput test system for characterizing high-temperature titanium-based alloy casting process performance and a preparation method thereof

Abstract

The application provides a high-throughput test system for characterizing high-temperature titanium-based alloy casting process performance and a preparation method thereof, the system comprises a sprue cup, a trapezoidal feeding opening and a sprue, and the sprue cup, the trapezoidal feeding opening and the sprue are sequentially fixedly connected; the bottom end of the sprue is further provided with a sprue nest, and the sprue nest is externally provided with a single helix alloy fluidity sample; the alloy filling capacity sample, the alloy casting shrinkage hole / shrinkage porosity defect test sample and the mechanical property test sample are arranged between the bottom runner and the top runner; the alloy cracking tendency test sample is fixedly connected to the middle section of the sprue. The wax mold of the high-throughput test system for characterizing high-temperature titanium-based alloy casting process performance has high precision, the functional module unit is combined flexibly and conveniently, the traditional pressing mold tool and the corresponding cost can be saved, the process flow operation is simple, the cost is low, and the sample preparation and research and development time can be greatly shortened.

Description

Technical Field

[0001] This invention belongs to the field of high-temperature titanium-based alloy precision casting technology, specifically relating to a high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys and its preparation method. Background Technology

[0002] Titanium and titanium alloys are widely used in aerospace, marine engineering, and petrochemical industries due to their advantages such as low density, high specific strength, high temperature resistance, and corrosion resistance. High-temperature titanium-based alloys, mainly near-a-type titanium alloys and titanium-aluminum intermetallic compounds, have service temperatures above 550℃ and are important candidate materials for hot-end components of aircraft such as aero-engines, attracting significant attention worldwide. Casting, as the most economical and effective process for forming complex internal cavity structures, plays a crucial role in the manufacture of large, complex, thin-walled, high-performance components. However, the casting process performance of high-temperature titanium-based alloys is relatively poor, mainly manifested in poor filling fluidity, numerous shrinkage cavities, porosity, and loose defects, and a high tendency to crack, seriously affecting the process design and manufacturing of such alloy castings. Traditionally, the evaluation of casting process performance usually involves independent studies of the alloy's fluidity, filling capacity, and shrinkage characteristics during casting production. This requires numerous process experiments, has large errors, and is costly, necessitating the development of an efficient and reliable characterization method.

[0003] The existing journal *Foundry* published a paper titled "Study on the Process Performance of High-Temperature Casting Titanium Alloy ZTA29." This paper compared the fluidity of ZTA29 and ZTC4 using concentric triple-helix patterns, concluding that the fluidity of ZTA29 alloy is 64.23% that of ZTC4 alloy. However, this method is limited to assessing the fluidity of castings and does not address the evaluation of the alloy's cracking tendency.

[0004] Patent 201210141407.7 discloses a method for visualizing casting filling. This patented technology uses a computer to numerically simulate the filling process of a casting, then uses a high-temperature camera to capture the filling process. The simulation results are corrected using the captured images, and based on the corrected simulation results, defects such as incomplete filling and cold shuts are analyzed, thereby improving the casting process and enhancing casting quality. However, this patent does not provide specific embodiments and can only evaluate the filling capacity of localized areas of steel alloys, making it unsuitable for titanium alloys with filling temperatures above 1700℃.

[0005] The article "Study on the Filling Capacity of Thin-Walled Aluminum Alloy Parts in Vacuum Casting" in the journal *Foundry* proposes using thin-walled castings of different thicknesses to study the filling capacity of aluminum alloys. Specifically, a series of thin-walled castings with thicknesses of 1mm, 2mm, 3mm, and 4mm, a width of 30mm, and a length of 200mm were designed and connected to the same gate via an ingate. The filling capacity of these thin-walled aluminum alloy castings under both low-pressure casting and vacuum casting conditions was then studied. However, this method has limitations. It can only evaluate the filling capacity of the alloy and cannot assess the hot cracking tendency of variable cross-section casting structures.

[0006] The *Journal of Dalian University of Technology* published an article titled "Equivalent Strain Criterion for Hot Cracking Prediction," which proposes an equivalent strain criterion for hot crack formation based on numerical simulation results of the temperature, stress, and strain fields during solidification. The specific method involves analyzing the thermal stress and strain of the casting to obtain the equivalent strain field distribution; the location of the maximum equivalent strain is the hot crack location. Its limitation is that this method can only predict the hot cracking tendency of the casting and does not address the evaluation of the alloy's filling capacity.

[0007] Based on this, the present invention proposes a high-throughput experimental system for characterizing the casting process performance of high-temperature titanium-based alloys. This system can not only simultaneously characterize the casting process performance of high-temperature titanium-based alloys, such as filling capacity, fluidity, cracking tendency, casting shrinkage cavity, and shrinkage porosity defects, but also provide mechanical test bars from the same batch, enabling a systematic evaluation of the casting process performance of high-temperature titanium-based alloys and providing guidance for the optimization of the composition and process of casting high-temperature titanium-based alloys. Summary of the Invention

[0008] This invention addresses the shortcomings of the prior art by providing a high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys. To address the difficulty in accurately evaluating the casting process performance of high-temperature titanium-based alloys, this invention integrates methods for characterizing the casting process performance of high-temperature titanium-based alloys with high-throughput preparation of mechanical property samples. It optimizes the design of a stepped casting system, ensuring smooth filling from bottom to top, which facilitates gas removal and avoids casting defects such as sand erosion and inclusions, including shrinkage cavities and porosity. This allows for a flexible combination of the casting process performance characterization system and the high-throughput mechanical property sample preparation array, improving R&D efficiency and product quality while reducing manufacturing costs and R&D time, thus solving the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] The first aspect of this invention provides a high-throughput test system for characterizing the casting process performance of high-temperature titanium-based alloys, comprising a pouring cup, a trapezoidal feeding port, and a sprue, wherein the pouring cup, the trapezoidal feeding port, and the sprue are fixedly connected in sequence;

[0011] The bottom end of the sprue is also provided with a sprue recess, and a single spiral alloy flowability sample is provided outside the sprue recess;

[0012] A cross-shaped bottom sprue is fixedly connected to the sprue near its bottom end, and a cross-shaped top sprue is fixedly connected to the sprue near its top end. An alloy filling capacity test specimen, an alloy casting shrinkage cavity / shrinkage porosity defect test specimen, and a mechanical property test specimen are placed between the bottom sprue and the top sprue.

[0013] An alloy cracking tendency test specimen is fixedly connected to the middle section of the sprue.

[0014] As a further explanation of the present invention, the single-helix alloy flowability sample has a single-helix structure, and gauge point is provided on the single-helix alloy flowability sample.

[0015] As a further explanation of the present invention, the direct casting channel recess is a hemispherical structure.

[0016] As a further explanation of the present invention, the top ends of the alloy filling capacity test specimen and the alloy casting shrinkage cavity / shrinkage defect test specimen are respectively connected to the top runner via titanium wire, the bottom ends of the alloy filling capacity test specimen and the alloy casting shrinkage cavity / shrinkage defect test specimen are respectively connected to the bottom runner, and the top and bottom ends of the mechanical property test specimen are respectively connected to the top runner and the bottom runner.

[0017] As a further explanation of the present invention, the alloy filling capacity test specimens are symmetrically distributed on both sides of the sprue, and each side of the alloy filling capacity test specimens consists of several thin plate-shaped test specimens with different thicknesses ranging from 1 to 6 mm.

[0018] As a further explanation of the present invention, the alloy casting shrinkage cavity / shrinkage porosity defect test specimens are symmetrically distributed on both sides of the sprue, and each side of the alloy casting shrinkage cavity / shrinkage porosity defect test specimens are composed of several thin plate-shaped specimens with different thicknesses within 10 to 25 mm.

[0019] As a further explanation of the present invention, the alloy cracking tendency test specimen is a cracking cup specimen with a maximum diameter of 120 mm, a minimum diameter of 70 mm, a maximum wall thickness of 15 mm, and a minimum wall thickness of 10 mm.

[0020] As a further explanation of the present invention, the mechanical property test specimen is a cylindrical specimen with a diameter greater than or equal to 15 mm, and the cylindrical specimen is provided with a clamping end and a gauge end.

[0021] A second aspect of the present invention provides a method for preparing the above-mentioned high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys, comprising:

[0022] Wax models of the high-throughput testing system are prepared using 3D printing technology for the manufacture of investment casting prototypes.

[0023] The wax model is wrapped with a slurry prepared from alumina powder silica sol and alumina sand. After the slurry solidifies, it is fired until the wax model is completely melted to obtain an investment casting shell.

[0024] The high-temperature titanium-based alloy liquid to be characterized is poured into the investment casting mold shell, cooled and solidified, and then the investment casting mold shell is broken to obtain the high-throughput test system.

[0025] As a further explanation of the present invention, plate-shaped samples of different thicknesses are set on each gating channel based on the bottom pouring method, so as to realize the flexible combination of high-throughput sample preparation arrays.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] This invention utilizes integrated 3D printing technology to create a high-throughput experimental system for characterizing the casting process performance of high-temperature titanium-based alloys. This system features high-precision wax model fabrication, flexible and convenient functional module combinations, saving on traditional molding tools and associated costs. The process is simple to operate, low-cost, and significantly shortens sample preparation and development time. Furthermore, this high-throughput experimental system can simultaneously characterize the fluidity, filling capacity, cracking tendency, casting shrinkage cavities, shrinkage defects, and mechanical properties of high-temperature titanium-based alloys. It enables a comprehensive analysis of the casting process characteristics of high-temperature titanium-based alloys, providing guidance for the development of cast high-temperature titanium-based alloys. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a front view of the overall structure of the present invention;

[0030] Figure 3 This is a top view of the overall structure of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Sprue cup; 2. Trapezoidal shrinkage gate; 3. Straight sprue; 4. Bottom runner; 5. Top runner; 6. Titanium wire; 7. Single spiral alloy flowability test specimen; 8. Alloy filling capacity test specimen; 9. Alloy casting shrinkage cavity / shrinkage porosity defect test specimen; 11. Mechanical property test specimen; 10. Alloy cracking tendency test specimen. Detailed Implementation

[0033] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figure 1-3 As shown, the present invention provides a technical solution: a high-throughput test system for characterizing the casting process performance of high-temperature titanium-based alloys, comprising a pouring cup 1, a trapezoidal feeding port 2, and a sprue 3, wherein the pouring cup 1, the trapezoidal feeding port 2, and the sprue 3 are fixedly connected in sequence.

[0035] The bottom of the sprue 3 is also provided with a sprue recess, which is specifically designed as a hemispherical structure to prevent turbulence and splashing, and ensure smooth filling. A single-helix alloy flowability sample 7 is placed outside the sprue recess.

[0036] A cross-shaped bottom sprue 4 is fixedly connected to the bottom end of the sprue 3, and a cross-shaped top sprue 5 is fixedly connected to the top end of the sprue 3. An alloy filling capacity test specimen 8, an alloy casting shrinkage cavity / shrinkage defect test specimen 9, and a mechanical property test specimen 11 are set between the bottom sprue 4 and the top sprue 5.

[0037] A test specimen 10 for alloy cracking tendency is fixedly connected at the middle section of the straight sprue 3.

[0038] The preparation method of the above-mentioned high-throughput test system for characterizing the casting process performance of high-temperature titanium-based alloys includes the following steps:

[0039] Step 1: Prepare wax models of the high-throughput testing system using 3D printing technology for the manufacture of investment casting prototypes;

[0040] Step 2: Wrap the wax model with a slurry prepared from alumina powder and silica sol and alumina sand. After the slurry solidifies, bake it until the wax model is completely melted to obtain the investment casting shell.

[0041] Step 3: Pour the high-temperature titanium-based alloy liquid to be characterized into the investment casting mold shell, and after cooling and solidification, break the investment casting mold shell to obtain the high-throughput test system.

[0042] Specifically, based on the bottom-injection method, plate-shaped samples of different thicknesses can be set on each gating channel to achieve flexible combination of high-throughput sample preparation arrays.

[0043] By using 3D printing technology to prepare wax models of the above system, which are then used to manufacture investment casting prototypes, the integrated system can be prepared conveniently and quickly.

[0044] The top ends of alloy filling capacity test specimen 8 and alloy casting shrinkage / porosity defect test specimen 9 are connected to the top runner 5 via titanium wire 6, respectively. The bottom ends of alloy filling capacity test specimen 8 and alloy casting shrinkage / porosity defect test specimen 9 are connected to the bottom runner 4, respectively. The top and bottom ends of mechanical property test specimen 11 are connected to the top runner 5 and the bottom runner 4, respectively.

[0045] The bottom runner is designed with a cross structure and a cross-sectional dimension of 30×25mm. The top runner mainly serves as an auxiliary support, with a cross-sectional dimension of 30×10mm. It, together with four 3×78mm titanium wires, firmly fixes two sets of plate-shaped specimens for testing filling capacity and two sets of plate-shaped specimens for testing casting shrinkage cavities and porosity defects onto the gating system for characterizing casting process performance.

[0046] The single-helix alloy flowability sample 7 has a single-helix structure, and gauge length positions are set on the single-helix alloy flowability sample 7.

[0047] Referring to the requirements for standard fluidity test specimens of alloys in the "Casting Handbook", and considering the poor fluidity of high-temperature titanium-based alloys, this invention improves the size of the standard fluidity test specimen to meet the testing requirements of high-temperature titanium-based alloy fluidity. Specifically, its cross-sectional dimensions are 16×6×12mm, the top surface is designed with gauge length position points, the gauge length is 50mm, the maximum length is 1200mm, and the single-helix alloy fluidity test specimen is placed at the bottom of the sprue. After pouring, the fluidity of the cast high-temperature titanium-based alloy is characterized by measuring the length of the fluidity test specimen.

[0048] Alloy filling capacity test specimens 8 are symmetrically distributed on both sides of the sprue 3. Each side of the alloy filling capacity test specimen 8 is composed of several thin plate-shaped test specimens of different thicknesses ranging from 1 to 6 mm.

[0049] By designing several thin plate-shaped specimens with different thicknesses within the range of 1 to 6 mm, the filling capacity of high-temperature titanium-based alloys in thin-walled parts of different thicknesses can be compared. At the same time, multiple sets of control samples are designed for each thickness of thin plate-shaped specimen in this high-throughput testing system to avoid experimental randomness and improve the reliability of the data.

[0050] The alloy casting shrinkage cavity / shrinkage porosity defect test specimens 9 are symmetrically distributed on both sides of the sprue 3. Each side of the alloy casting shrinkage cavity / shrinkage porosity defect test specimens 9 consists of several thin plate-shaped specimens of different thicknesses within 10 to 25 mm.

[0051] Plate-shaped specimens of different thicknesses represent different cooling rates; the smaller the thickness, the greater the cooling rate. By designing several plate-shaped specimens of different thicknesses within the range of 10–25 mm, the generation of defects in high-temperature titanium-based alloys during the casting process can be characterized, and the influence of cooling rate on the generation of defects during the casting process can be quantitatively analyzed. At the same time, multiple sets of control samples of each thickness are designed for this high-throughput experimental system to avoid experimental randomness and improve the reliability of the data.

[0052] The alloy cracking tendency test specimen 10 is a cracking cup specimen with a maximum diameter of 120 mm, a minimum diameter of 70 mm, a maximum wall thickness of 15 mm, and a minimum wall thickness of 10 mm.

[0053] Referring to the characterization method of alloy cracking tendency in the "Casting Handbook", this invention designed a cracked cup sample with a maximum diameter of 120 mm, a minimum diameter of 70 mm, a maximum wall thickness of 15 mm, and a minimum wall thickness of 10 mm. After casting, the number and length of cracks on the inner surface of the cracked cup are examined by penetrant testing to evaluate the cracking tendency of high-temperature titanium-based alloys during the casting process.

[0054] The mechanical property test specimen 11 is a cylindrical specimen with a diameter greater than or equal to 15 mm. The cylindrical specimen is equipped with a clamping end and a gauge end.

[0055] Referring to GB / T228.1-2010 Metallic Materials - Tensile Testing - Part 1: Test at Room Temperature and HB5143-96 Metallic Materials - Tensile Testing at Room Temperature, the standard tensile specimen cylindrical bar designed in this invention has a clamping end and a gauge length end. The clamping end has a diameter of 14.5 mm and a length of 30 mm, while the gauge length has a diameter of 8 mm and a length of 35 mm (with a machining allowance of 2-2.5 mm at each end). The design allows for mechanical property specimens with a diameter greater than 15 mm, which can characterize the mechanical properties of cast high-temperature titanium-based alloys under the same casting conditions. Example 1

[0056] A high-throughput test system for characterizing the casting process performance of high-temperature titanium-based alloys includes a pouring cup 1, a trapezoidal feeding port 2, and a sprue 3, which are fixedly connected in sequence.

[0057] The bottom of the sprue 3 is also provided with a sprue recess, which is specifically designed as a hemispherical structure to prevent turbulence and splashing, and ensure smooth filling. A single-helix alloy flowability sample 7 is placed outside the sprue recess.

[0058] A cross-shaped bottom sprue 4 is fixedly connected to the bottom end of the sprue 3, and a cross-shaped top sprue 5 is fixedly connected to the top end of the sprue 3. An alloy filling capacity test specimen 8, an alloy casting shrinkage cavity / shrinkage defect test specimen 9, and a mechanical property test specimen 11 are set between the bottom sprue 4 and the top sprue 5.

[0059] A test specimen 10 for alloy cracking tendency is fixedly connected at the middle section of the straight sprue 3.

[0060] The preparation method of the above-mentioned high-throughput test system for characterizing the casting process performance of high-temperature titanium-based alloys includes the following steps:

[0061] Step 1: Prepare wax models of the high-throughput testing system using 3D printing technology for the manufacture of investment casting prototypes;

[0062] Step 2: Wrap the wax model with a slurry prepared from alumina powder and silica sol and alumina sand. After the slurry solidifies, bake it until the wax model is completely melted to obtain the investment casting shell.

[0063] Step 3: Pour the high-temperature titanium-based alloy liquid to be characterized into the investment casting mold shell, and after cooling and solidification, break the investment casting mold shell to obtain the high-throughput test system.

[0064] Specifically, based on the bottom-injection method, plate-shaped samples of different thicknesses can be set on each gating channel to achieve flexible combination of high-throughput sample preparation arrays.

[0065] By using 3D printing technology to prepare wax models of the above system, which are then used to manufacture investment casting prototypes, the integrated system can be prepared conveniently and quickly.

[0066] The specific dimensions of each experimental characterization module in this embodiment are designed as follows:

[0067] Characterization of filling capacity: Two thin plate-shaped specimens with thicknesses of 1.5 mm, 3 mm, and 5 mm were designed, with a width of 90 mm and a height of 150 mm. The filling capacity of the high-temperature titanium-based alloy was quantitatively analyzed by statistically analyzing the height of the thin plate-shaped specimens with different thicknesses.

[0068] Cracking tendency characterization: Cracking cup samples with a maximum diameter of 120 mm, a minimum diameter of 70 mm, a maximum wall thickness of 15 mm, and a minimum wall thickness of 10 mm were designed. After casting, the cracking tendency of the high-temperature titanium-based alloy was quantitatively analyzed by penetrant testing to determine the length and number of cracks.

[0069] Flowability characterization: A single-helix alloy flowability specimen with a cross-sectional dimension of 16×6×12mm, a gauge length of 50mm, and a total length of 1000mm was designed with gauge points on the top surface. The flowability of the high-temperature titanium-based alloy was quantitatively analyzed by measuring the length of the single-helix specimen after casting.

[0070] Characterization of shrinkage cavities and porosity defects in casting: Two plate-shaped specimens each with a thickness of 10 mm and 20 mm were designed. After casting, the defects present in the plate-shaped specimens were statistically analyzed using industrial CT. This method can characterize the generation of shrinkage cavities and porosity defects in high-temperature titanium-based alloys during the casting process and qualitatively analyze the influence of cooling rate on the generation of shrinkage cavities and porosity defects in cast high-temperature titanium-based alloys.

[0071] Mechanical property characterization: Based on the high-throughput fabrication array combination system, four φ15*150mm cylindrical specimens were designed. After casting, in accordance with HB5143-96, the standard tensile specimen cylindrical bar was designed with a clamping end and a gauge length end. The clamping end has a diameter of 14.5mm and a length of 30mm, and the gauge length has a diameter of 8mm and a length of 35mm (with a 3mm machining allowance reserved at each end). A total of eight standard tensile specimens can be processed for mechanical property characterization of the cast high-temperature titanium-based alloy.

[0072] In addition, the gating system can also be used for secondary melting or as an auxiliary electrode to maximize the utilization of materials.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," 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 process, method, article, or apparatus.

[0074] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-throughput testing system for characterizing the casting process properties of high-temperature titanium-based alloys, characterized in that: It includes a pouring cup (1), a trapezoidal shrinkage nozzle (2), and a sprue (3), which are fixedly connected in sequence; The bottom end of the sprue (3) is also provided with a sprue recess, and a single spiral alloy flowability sample (7) is provided outside the sprue recess. The sprue (3) is fixedly connected to a cross-shaped bottom sprue (4) near the bottom end, and the sprue (3) is fixedly connected to a cross-shaped top sprue (5) near the top end. An alloy filling capacity test specimen (8), an alloy casting shrinkage cavity / shrinkage defect test specimen (9), and a mechanical property test specimen (11) are provided between the bottom sprue (4) and the top sprue (5). An alloy cracking tendency test specimen (10) is fixedly connected to the middle section of the straight sprue (3). The top ends of the alloy filling capacity test specimen (8) and the alloy casting shrinkage / porosity defect test specimen (9) are connected to the top runner (5) via titanium wire (6), respectively. The bottom ends of the alloy filling capacity test specimen (8) and the alloy casting shrinkage / porosity defect test specimen (9) are connected to the bottom runner (4), respectively. The top and bottom ends of the mechanical property test specimen (11) are connected to the top runner (5) and the bottom runner (4), respectively. The alloy filling capacity test specimens (8) are symmetrically distributed on both sides of the sprue (3). Each alloy filling capacity test specimen (8) on each side consists of several specimens of different thicknesses within 1 to 6 mm. The alloy casting shrinkage / porosity defect test specimens (9) are symmetrically distributed on both sides of the sprue (3). Each side of the alloy casting shrinkage / porosity defect test specimens (9) is composed of several thin plate-shaped specimens with different thicknesses within 10 to 25 mm. The alloy cracking tendency test specimens (10) are cracking cup specimens with a maximum diameter of 120 mm, a minimum diameter of 70 mm, a maximum wall thickness of 15 mm, and a minimum wall thickness of 10 mm. The mechanical property test specimens (11) are cylindrical specimens with a diameter greater than or equal to 15 mm. The cylindrical specimens are provided with a clamping end and a gauge end.

2. The high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys according to claim 1, characterized in that, The single-helix alloy flowability sample (7) has a single-helix structure and a gauge point is provided on the single-helix alloy flowability sample (7).

3. The high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys according to claim 2, characterized in that, The direct casting channel is a hemispherical structure.

4. A method for preparing a high-throughput testing system for characterizing the casting process properties of high-temperature titanium-based alloys according to any one of claims 1-3, characterized in that, include: Wax models of the high-throughput testing system are prepared using 3D printing technology for the manufacture of investment casting prototypes. The wax model is wrapped with a slurry prepared from alumina powder silica sol and alumina sand. After the slurry solidifies, it is fired until the wax model is completely melted to obtain an investment casting shell. The high-temperature titanium-based alloy liquid to be characterized is poured into the investment casting mold shell, cooled and solidified, and then the investment casting mold shell is broken to obtain the high-throughput test system.

5. The method for preparing a high-throughput testing system for characterizing the casting process performance of high-temperature titanium-based alloys according to claim 4, characterized in that, By using the bottom-injection method, plate-shaped samples of different thicknesses are set on each gating channel, enabling flexible combination of high-throughput sample preparation arrays.

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