Preparation method of 3D printed bronze ware
Through 3D printing technology, combined with copper-based composite materials and ball mill mixing technology, bronze ware with three-cycle extremely small curved surface structure design is prepared, solving the flexibility, material utilization and cost problems of traditional bronze ware manufacturing, and achieving efficient and personalized bronze ware manufacturing.
Patent Information
- Application Number
- CN202510207864.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional bronze manufacturing has problems such as limited design flexibility, low material utilization, high manufacturing cost, difficulty in achieving complex structures and insufficient environmental friendliness. When applying 3D printing technology to bronze manufacturing, it faces technical challenges such as material selection, printing parameter optimization and post-processing processes.
The bronze ware is prepared by 3D printing technology. The specific steps include screening and weighing copper-based composite materials, mixing the ball mill to prepare copper-plated diamond copper powder, laser printing through an SLM3D printer, building a three-period extremely small curved surface structure model, stress removal treatment, ultrasonic cleaning and polishing, and finally hot air drying.
It realizes the batch and quick printing of bronzes with three-cycle extremely small curved surface structure design, which improves the design flexibility and material utilization of bronzes, reduces manufacturing costs, and enhances the stability and applicability of bronzes.
Smart Images
Figure CN120041702A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of 3D printing, and in particular to a preparation method for 3D printing bronze wares. Background Art
[0002] Traditional bronze ware manufacturing mainly relies on casting processes, which suffer from problems such as limited design flexibility, low material utilization rate, high manufacturing cost, difficulty in achieving complex structures, and insufficient environmental friendliness.
[0003] With the rapid development of 3D printing technology, especially the maturity of metal 3D printing technology, revolutionary changes have been brought to bronze ware manufacturing. However, applying 3D printing technology to bronze ware manufacturing, especially in combination with the design of triply periodic minimal surfaces, still faces many technical challenges, such as material selection, printing parameter optimization, and post-processing techniques. Summary of the Invention
[0004] In view of the deficiencies of the prior art, the objectives of the present invention can be achieved through the following technical solutions:
[0005] A preparation method for 3D printing bronze wares, the preparation method comprising the following steps:
[0006] S1. Screen and weigh the copper-based composite materials required for 3D printing, including: copper powder and copper-plated diamond powder, and the weight ratio of copper-plated diamond powder to copper powder is 2:498;
[0007] S2. Put the copper powder and copper-plated diamond powder into a ball mill respectively, and carry out ball milling and mixing under the protection of argon to prepare copper-plated diamond copper micropowder with uniform production standards, uniform particle size, and a wetting degree reaching 85%-95%;
[0008] S3. Add the copper-plated diamond copper micropowder to an SLM 3D printer, and then carry out laser printing according to a pre-set program under the protection of nitrogen;
[0009] S4. Use nTopology to construct a model of a triply periodic minimal surface structure, and by adjusting the parameters of the triply periodic minimal surface structure, construct a parametric model that meets the design requirements of bronze wares to achieve personalized customization;
[0010] S5. Add the copper-plated diamond copper micropowder to an SLM 3D printer, and then carry out laser printing according to the model path in step S4 under the protection of nitrogen to prepare a bronze ware with a triply periodic minimal surface structure design;
[0011] S6. Heat the bronze ware with a triply periodic minimal surface structure design made in step S5 between 300°C and 400°C, and then slowly cool it. After stress relief treatment, the stability of the bronze ware increases, making it suitable for use under high load conditions;
[0012] S7. Put the bronze ware with a triply periodic minimal surface structure design made in step S6 into an ultrasonic cleaner, and then add a water-based cleaning agent for ultrasonic cleaning. After cleaning, take it out and set it aside for later use;
[0013] S8. Put the bronze ware made in step S7 into a roller machine for polishing. After polishing, take it out and rinse it clean;
[0014] S9. Put the bronze ware that has been ultrasonically cleaned and polished in step S8 into a hot air dryer for hot air drying, and then the processing of the bronze ware with a triply periodic minimal surface structure design is completed.
[0015] Further, in step S1, 1 vol.% copper-plated diamond / copper composite material is selected as the raw material required for printing.
[0016] Further, in step S2, the ball milling is carried out at a rotational speed of 100 rpm. Set the forward and reverse rotations for 30 minutes each as a group, and rotate for a total of 3 groups. Pause for 10 minutes every 30 minutes to prevent overheating.
[0017] Further, in step S5, the laser power is 180W, the scanning speed is 200mm / s, and the layer thickness is 0.025mm.
[0018] Further, in step S6, the bronze ware with a triply periodic minimal surface structure design is heated between 300°C and 400°C, held for a period of time, and then slowly cooled.
[0019] Further, in step S7, the ultrasonic power is 0.3 - 0.4 w / cm2, and the ultrasonic cleaning time is 10 - 20 min.
[0020] Further, in step S8, when polishing, round iron beads, small flying saucers, agate, polishing powder and clean water need to be added to the roller machine.
[0021] Further, in step S9, the temperature of hot air drying is 130 - 140°C, and the time is 3 - 5 min.
[0022] A bronze ware with a triply periodic minimal surface structure design is prepared by the above-mentioned preparation method of 3D printing bronze ware.
[0023] Advantages of the present invention: By reasonable material selection, printing parameter optimization, and post - processing technology, the present invention combines bronze ware with 3D printing, enabling the batch and rapid printing of bronze ware with a three - periodic minimal surface structure design, which brings convenience to the manufacture of bronze ware. Description of the Drawings
[0024] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0025] Figure 1 are the scanning electron microscope images, bending stress, and CTE values of the embodiments of the present invention; Figure 1 Among them: (a) Scanning electron microscope images of 1 vol.% and (b) 3 vol.% titanium - coated diamond / copper composites, (c) Scanning electron microscope images of 1 vol.% and (d) 3 vol.% copper - coated diamond / copper composites, (e) Bending stress and (f) CTE values of the coated diamond / copper composites and pure copper.
[0026] Figure 2 are the top view, front view, and bottom view of the Gyroid - type bronze ware - gu of the embodiments of the present invention.
[0027] Figure 3 are the top view, front view, side view, and bottom view of the Gyroid - type bronze ware - ding of the embodiments of the present invention.
[0028] Figure 4 are the top view, front view, side view, and bottom view of the Gyroid - type bronze ware - zhong of the embodiments of the present invention.
[0029] Figure 5 are the top view, front view, and bottom view of the Gyroid - type bronze ware - zun of the embodiments of the present invention.
[0030] Figure 6 are the top view, front view, and bottom view of the Diamond - type bronze ware - gu of the embodiments of the present invention.
[0031] Figure 7 are the top view, front view, side view, and bottom view of the Diamond - type bronze ware - ding of the embodiments of the present invention.
[0032] Figure 8 are the top view, front view, side view, and bottom view of the Diamond - type bronze ware - zhong of the embodiments of the present invention.
[0033] Figure 9are the top view, front view, and bottom view of the Diamond type bronze ware - zun in the embodiments of the present invention.
[0034] Figure 10 are the top view, front view, and bottom view of the Schwarz P type bronze ware - gu in the embodiments of the present invention.
[0035] Figure 11 are the top view, front view, side view, and bottom view of the Schwarz P type bronze ware - ding in the embodiments of the present invention.
[0036] Figure 12 are the top view, front view, side view, and bottom view of the Schwarz P type bronze ware - zhong in the embodiments of the present invention.
[0037] Figure 13 are the top view, front view, and bottom view of the Schwarz P type bronze ware - zun in the embodiments of the present invention.
[0038] Figure 14 are the physical diagrams of 3D printed bronze wares with a three - period minimal surface structure design in the embodiments of the present invention.
[0039] Figure 15 are the diagrams of relevant application scenarios of printed bronze wares in the embodiments of the present invention. Detailed implementation manners
[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0041] A preparation method for 3D printed bronze wares, the preparation method includes the following steps:
[0042] S1. Screen and weigh the copper - based composite materials required for 3D printing, including: copper powder, copper - plated diamond powder, and the weight ratio of copper - plated diamond powder to copper powder is 2∶498;
[0043] S2. Put the copper powder and copper - plated diamond powder into a ball mill respectively, and carry out ball - milling and mixing under the protection of argon to prepare copper - plated diamond copper micro - powder with unified production standards, uniform particle size, and a wetting degree reaching 85% - 95% for standby; use a rotation speed of 100 rpm for ball - milling, set 30 minutes for each forward and reverse rotation as a group, with a total of 3 groups, and pause for 10 minutes every 30 minutes to prevent overheating.
[0044] S3. Add the copper-plated diamond copper micropowder into an SLM 3D printer, and then perform laser printing under the protection of nitrogen according to a pre-set program.
[0045] S4. Use nTopology to construct a model of a triply periodic minimal surface structure. By adjusting the parameters of the triply periodic minimal surface structure, construct a parametric model that meets the design requirements of the bronze ware to achieve personalized customization.
[0046] S5. Add the copper-plated diamond copper micropowder into an SLM 3D printer, and then perform laser printing under the protection of nitrogen according to the model path in step S4 to make a bronze ware with a triply periodic minimal surface structure design for standby; the laser power is 180 W, the scanning speed is 200 mm / s, and the layer thickness is 0.025 mm.
[0047] S6. Heat the bronze ware with a triply periodic minimal surface structure design made in step S5 between 300 °C and 400 °C, and then slowly cool it. After stress relief treatment, the stability of the bronze ware increases and it is suitable for use under high load conditions; the bronze ware with a triply periodic minimal surface structure design is heated between 300 °C and 400 °C and kept for a period of time before slowly cooling.
[0048] S7. Put the bronze ware with a triply periodic minimal surface structure design made in step S6 into an ultrasonic cleaning machine, and then add a water-based cleaning agent for ultrasonic cleaning. After cleaning is completed, take it out and set it aside for standby; the ultrasonic power is 0.3 - 0.4 w / cm 2 , and the ultrasonic cleaning time is 10 - 20 min.
[0049] S8. Put the bronze ware made in step S7 into a tumbling machine for polishing. After polishing is completed, take it out and rinse it clean; when polishing, it is necessary to add round iron beads, small flying saucers, agate, polishing powder and clean water into the tumbling machine.
[0050] S9. Put the bronze ware that has completed ultrasonic cleaning and polishing in step S8 into a hot air dryer for hot air drying, and then complete the processing of the bronze ware with a triply periodic minimal surface structure design; the hot air drying temperature is 130 - 140 °C and the time is 3 - 5 min.
[0051] During the preparation, first conduct material screening. According to the casting performance, mechanical and thermal properties, and environmental friendliness, conduct multi-dimensional standards to screen copper-based composite materials suitable for 3D printing.
[0052] Specifically include:
[0053] Prepare appropriate amounts of copper powder, copper-plated diamond powder, and titanium-plated diamond powder, and conduct component analysis on the copper powder, copper-plated diamond powder, and titanium-plated diamond powder to ensure that no harmful elements are contained.
[0054] Table 1 shows the chemical composition of pure copper powder:
[0055] Table 1:
[0056] Element Cu P Zn Sn Pb Fe S Al Wt.% 99.599 0.132 0.069 0.066 0.010 0.066 0.003 0.028
[0057] Table 2 shows the chemical composition of copper-plated diamond powder / titanium-plated diamond powder: Table 2:
[0058]
[0059] In addition, the printed materials need to be screened. The specific screening steps are as follows:
[0060] Perform performance tests on the test pieces. According to the test results, evaluate the thermal and mechanical properties and hardness of the diamond / copper composite coating. The test results show that the interface bonding between the copper matrix and the diamond reinforcement of the copper-plated diamond / copper composite material sample is better than that of the titanium-plated diamond / copper composite material sample. Among them, the interface bonding between the copper matrix and the diamond reinforcement of the 1 vol.% copper-plated diamond / copper composite material sample is relatively the best, with a low coefficient of thermal expansion and the strongest flexural strength;
[0061] Based on the performance test results, make the following adjustments:
[0062] When it is found in the test that the flexural strength of the material is insufficient, or there are large fractures or plastic deformations, it may be that the particle size of the diamond particles is too large, resulting in insufficient mechanical properties. Adjustment steps: Adjust the particle size of the diamond particles. By reducing the particle size (such as from 30 μm to 20 μm), improve its dispersion in the copper matrix and improve the mechanical properties, especially the flexural strength; Optimize the particle distribution to ensure that the diamond particles are evenly distributed in the matrix and avoid the formation of large particle clusters that affect the overall mechanical properties.
[0063] When the thermal conductivity is lower than expected (for example, it fails to reach 500 W / m·K), or the coefficient of thermal expansion does not match, the thermal properties can be improved by adjusting the coating material or thickness. The adjustment method is: Optimize the coating material or thickness. For example, if the thermal conductivity of copper plating is high and its coefficient of thermal expansion matches well with the copper matrix, the thickness of the copper plating layer can be increased (such as from 0.8 μm to 2 μm) to increase the thermal conductivity; At the same time, replace the coating material. For example, the titanium plating material may have limited improvement in the interfacial bonding force, and a more suitable copper coating can be considered.
[0064] Adjust the SLM process parameters according to the performance feedback during the printing process. Check the material density, porosity, and surface quality of the printed material through the scanning electron microscope (SEM) test method. If it is found that there are problems such as high porosity or rough surface, it may be necessary to adjust the printing process parameters. The adjustment methods are as follows: Adjust the laser power. If it is found that the laser power is too low to cause unstable molten pool, the laser power can be increased (such as from 130W to 180W) to test the optimal laser power to enhance the fluidity of the molten pool and improve the forming quality; Adjust the scanning speed. If the test data shows that the scanning speed is too fast to cause incomplete fusion of the molten pool or high porosity, the scanning speed can be reduced (for example, from 550mm / s to 50mm / s) to test the optimal scanning speed to improve the interlayer bonding; Adjust the layer thickness. If it is found through testing that a thicker printing layer causes thermal stress concentration, the layer thickness can be reduced (such as from 50μm to 25μm) to test the optimal layer thickness to reduce deformation and crack generation; Adjust the composition of the copper-based diamond composite material. Finally, select 1 vol.% copper-plated diamond / copper composite material to print bronze wares to meet the requirements of bronze ware manufacturing. It should be noted that when screening copper-based composite materials suitable for 3D printing, multiple criteria such as casting performance, mechanical properties, thermal properties, and environmental friendliness need to be considered comprehensively. The casting performance requires the material to have good fluidity (MFI value 10 - 50g / 10min) and appropriate solidification behavior, and the solidification time should be between several seconds and dozens of seconds to ensure thermal stability during printing. In terms of mechanical properties, the yield strength should be around 150MPa, the hardness should be 50 - 200HV, the ductility should be greater than 10%, and the toughness should be greater than 10J. The thermal properties require the thermal conductivity to be greater than 200W / m·K, and the thermal expansion coefficient should be between 10 - 20×10 -6 / K. In terms of environmental friendliness, the material should have a high recovery rate (at least 90%) and the emissions during the printing process should meet environmental protection standards. Finally, through experimental testing, adaptability evaluation, and environmental friendliness evaluation, comprehensively select the most suitable copper-based composite material for 3D printing applications.
[0065] Among them, first, the experimental testing refers to a series of standardized tests on the coated diamond / copper composite material to evaluate its thermal and mechanical properties. Specifically, it includes: 1. Thermal expansion coefficient test: Use a thermomechanical analyzer (TMA) to measure the dimensional changes of the material during heating to determine its thermal expansion coefficient; 2. Flexural strength test: Determine the flexural strength of the material through a three-point bending testing machine to evaluate its fracture resistance under stress; 3. Hardness test: Measure the hardness of the material using a Vickers hardness tester or a Rockwell hardness tester to reflect its ability to resist local deformation; 4. Thermal conductivity test: Measure the thermal conductivity of the material using the laser flash method or the heat flow method to evaluate its heat conduction performance; 5. Microstructure analysis: Observe the microstructure of the material through a scanning electron microscope (SEM), including the distribution of diamond particles and the interface bonding situation.
[0066] II. Adaptability evaluation refers to evaluating the applicability and performance of materials during the 3D printing process, including: 1. Printing performance test: Through actual printing tests, evaluate the fluidity, solidification behavior, and printing forming quality of materials; 2. Process parameter optimization: According to the printing results, adjust SLM process parameters such as laser power, scanning speed, and layer thickness to optimize the printing effect; 3. Forming quality inspection: Use tools such as SEM to check the density, porosity, and surface quality of the printed materials to ensure that the printed parts meet the design requirements.
[0067] III. Environmental friendliness evaluation refers to evaluating the environmental impact of materials during production and use, including: 1. Recovery rate test: Determine the recovery rate of materials through experiments to ensure that it has high reuse value; 2. Emission test: Detect the gas and particulate emissions generated by materials during printing to ensure that they meet environmental protection standards; 3. Life cycle assessment: Analyze the environmental impact of materials throughout their life cycle from production to disposal and evaluate their sustainability.
[0068] Example 1:
[0069] The SLM process parameters for 1 vol.% copper-plated diamond / copper composite material are a laser power of 180 W, a scanning speed of 200 mm / s, a layer thickness of 0.025 mm, and a checkerboard laser scanning strategy
[0070] Example 2:
[0071] The SLM process parameters for 3 vol.% copper-plated diamond / copper composite material are a laser power of 160 W, a scanning speed of 100 mm / s, a layer thickness of 0.025 mm, and a checkerboard laser scanning strategy;
[0072] Example 3:
[0073] The SLM process parameters for 1 vol.% titanium-plated diamond / copper composite material are a laser power of 180 W, a scanning speed of 200 mm / s, a layer thickness of 0.025 mm, and a checkerboard laser scanning strategy;
[0074] Example 4:
[0075] The SLM process parameters for 3 vol.% titanium-plated diamond / copper composite material are a laser power of 140 W, a scanning speed of 200 mm / s, a layer thickness of 0.025 mm, and a checkerboard laser scanning strategy;
[0076] Test results:
[0077] I. Differences in performance parameters
[0078] 1. Coefficient of thermal expansion (CTE):
[0079] The coefficient of thermal expansion of the materials in each example was measured to evaluate their thermal stability.
[0080] Example 1: The coefficient of thermal expansion of 1 vol.% copper-plated diamond / copper composite material was 19.2×10 -6 / K;
[0081] Example 2: The coefficient of thermal expansion of 3 vol.% copper-plated diamond / copper composite material was 19.1×10 -6 / K;
[0082] Example 3: The coefficient of thermal expansion of 1 vol.% titanium-plated diamond / copper composite material was 19.4×10 -6 / K;
[0083] Example 4: The coefficient of thermal expansion of 3 vol.% titanium-plated diamond / copper composite material was 19.5×10 -6 / K.
[0084] 2. Thermal conductivity:
[0085] The thermal conductivity of the materials in each example was tested to evaluate their heat conduction performance.
[0086] Example 1: The thermal conductivity was 500 W / m·K;
[0087] Example 2: The thermal conductivity was 450 W / m·K;
[0088] Example 3: The thermal conductivity was 400 W / m·K;
[0089] Example 4: The thermal conductivity was 380 W / m·K.
[0090] 3. Flexural strength:
[0091] The flexural strength of the materials in each example was determined by a three-point bending test to evaluate their mechanical properties.
[0092] Example 1: The flexural strength was 150 MPa;
[0093] Example 2: The flexural strength was 108 MPa;
[0094] Example 3: The flexural strength was 148 MPa;
[0095] Example 4: The flexural strength was 36 MPa.
[0096] 4. Porosity:
[0097] The porosity of the materials in each example was determined by scanning electron microscopy (SEM) or density measurement to evaluate their molding quality.
[0098] Example 1: The porosity was 0.5%;
[0099] Example 2: The porosity is 0.8%;
[0100] Example 3: The porosity is 1.2%;
[0101] Example 4: The porosity is 1.5%.
[0102] 5. Interface bonding strength:
[0103] The interface bonding strength between diamond particles and copper matrix is evaluated by interface shear test or microstructure analysis.
[0104] Example 1: The interface bonding strength is 200 MPa;
[0105] Example 2: The interface bonding strength is 180 MPa;
[0106] Example 3: The interface bonding strength is 150 MPa;
[0107] Example 4: The interface bonding strength is 130 MPa.
[0108] II. Data analysis and comparison
[0109] Through the data of the above performance parameters, the differences between each example can be clearly compared:
[0110] Copper plating vs. titanium plating: Copper-plated diamond / copper composites are superior to titanium-plated diamond / copper composites in terms of thermal conductivity, flexural strength and interface bonding strength, indicating that the copper plating layer can better improve interface bonding and thermodynamic properties.
[0111] 1 vol.% vs. 3 vol.%: Composites with 1 vol.% diamond content perform better in terms of thermal expansion coefficient, thermal conductivity and flexural strength, while composites with 3 vol.% diamond content may have performance degradation due to particle aggregation.
[0112] Influence of process parameters: Higher laser power (such as 180 W) and moderate scanning speed (such as 200 mm / s) help to improve the thermal conductivity and flexural strength of the material, while reducing the porosity.
[0113] Conclusion:
[0114] By supplementing the data of the above performance parameters, the differences between each example can be more comprehensively demonstrated, and a scientific basis can be provided for material selection and process optimization. Example 1 (1 vol.% copper-plated diamond / copper composite) performs best in terms of thermal properties, mechanical properties and forming quality, and is suitable for 3D printing manufacturing of high-performance bronze ware.
[0115] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0116] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.
Claims
1. A method for preparing a 3D printed bronze ware, characterized in that: The preparation method comprises the following steps: S1. Screen and weigh the copper-based composite material required for 3D printing, including: copper powder and copper-plated diamond powder, and the weight ratio of the copper-plated diamond powder to the copper powder is 2:498; S2, respectively put the copper powder and the copper-plated diamond powder into a ball mill, and mix them by ball milling under the protection of argon gas to produce copper-plated diamond copper micropowder with uniform production standards, uniform particle size and wettability of 85%-95% for standby use; S3, adding copper-plated diamond copper powder into the SLM3D printer, and then laser printing according to a pre-set program under the protection of nitrogen; S4. Use nTopology to build a model of a three-periodic minimal surface structure. By adjusting the parameters of the three-periodic minimal surface structure, a parametric model that meets the design requirements of bronze ware is constructed to achieve personalized customization. S5, adding copper-plated diamond copper powder into the SLM 3D printer, and then laser printing according to the model path of step S4 under the protection of nitrogen to produce a bronze ware with a three-periodic minimal surface structure design for standby use; S6, heating the bronze ware with the three-period minimal surface structure design made in step S5 between 300° C. and 400° C., and then slowly cooling it, so that after stress relief treatment, the stability of the bronze ware is increased and it is suitable for use under high load conditions; S7, putting the bronze ware with the three-period minimal surface structure design made in step S6 into an ultrasonic cleaning machine, then adding a water-based cleaning agent for ultrasonic cleaning, and after the cleaning is completed, taking it out for use; S8, putting the bronze ware made in step S7 into a drum machine for polishing, and taking it out and rinsing it after polishing; S9, placing the bronze ware that has been ultrasonically cleaned and polished in step S8 into a hot air dryer for hot air drying, thereby completing the processing of the bronze ware with a three-period minimal surface structure design.
2. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S1, 1 vol.% copper-plated diamond / copper composite material is selected as the raw material required for printing.
3. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S2, the ball milling is performed at a rotation speed of 100 rpm, and the forward and reverse rotations are set to 30 minutes each as one group, with a total of 3 groups, and a 10-minute pause every 30 minutes to prevent overheating.
4. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S5, the laser power is 180 W, the scanning speed is 200 mm / s, and the layer thickness is 0.025 mm.
5. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S6, the bronze ware with a three-period minimal surface structure design is heated between 300° C. and 400° C., maintained for a period of time, and then slowly cooled.
6. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S7, the ultrasonic power is 0.3-0.4w / cm2, and the ultrasonic cleaning time is 10-20min.
7. The method for preparing a 3D printed bronze ware according to claim 1, characterized in that: In step S8, round iron beads, small flying saucers, agate, polishing powder and clean water need to be added to the roller machine during polishing.
8. The method for preparing a 3D printed bronze ware according to claim, characterized in that: In step S9, the hot air drying temperature is 130-140° C. and the time is 3-5 minutes.
9. A bronze ware with a three-periodic minimal surface structure design is prepared by the preparation method of a 3D printed bronze ware described in any one of claims 1-8.