Process for melting and forming Ti6Al4V titanium alloy micropore structure workpiece through laser powder bed and workpiece

Abstract

The invention discloses a process for melting and forming a Ti6Al4V titanium alloy microporous structure workpiece by a laser powder bed and the workpiece. The process comprises the following steps: providing Ti6Al4V titanium alloy powder; in laser powder bed melting equipment, the titanium alloy powder is spread layer by layer, and laser scanning melting is conducted; wherein the step of laser scanning melting comprises the substeps that filling scanning and contour scanning are executed on each forming layer, and different laser process parameter combinations are adopted in the filling scanning and the contour scanning, so that a micropore structure is formed in the workpiece, and the surface of the workpiece is densified; the laser process parameters of the filling scanning are as follows: the laser power is 160 to 200W, and the scanning interval is 0.03 to 0.07 mm; according to the laser process parameters of contour scanning, the laser power ranges from 170 W to 200 W, and the scanning interval ranges from 0.03 mm to 0.07 mm. The invention aims to provide a laser powder bed melting Ti6Al4V forming process capable of simultaneously realizing an internal controllable microporous structure and a compact surface and a workpiece, so as to solve the problem of poor formability of a complex curved surface in the application of a traditional lattice structure in consumer goods such as glasses and the like.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, specifically to a process and the fabricated part of a Ti6Al4V titanium alloy microporous structure formed by laser powder bed fusion molding. Background Technology

[0002] Metal Additive Manufacturing (MAM), as an emerging advanced processing technology, has been widely applied in aerospace, mold making, machinery manufacturing, and medical engineering. This technology directly manufactures metal components through layer-by-layer deposition, achieving an innovative integrated design-processing-manufacturing model. Compared to traditional subtractive manufacturing, additive manufacturing significantly reduces manufacturing processes and material waste, improving production efficiency and manufacturing flexibility. Simultaneously, the integration of digital design and intelligent manufacturing technologies breaks down the limitations of traditional processing techniques on complex structures and free-form surfaces, enabling innovative structures such as lightweighting, functional gradation, and complex internal channels. Based on this, metal additive manufacturing demonstrates unique advantages in meeting personalized and customized needs. Especially in the eyewear manufacturing industry, additive manufacturing enables individualized ergonomic design and rapid prototyping of high-precision metal frames, shortening product development cycles and increasing product added value and design freedom. Therefore, the introduction of metal additive manufacturing technology provides a new technological path and development opportunity for the high-end, customized, and intelligent transformation of the eyewear industry.

[0003] Traditional 3D-printed titanium alloy microporous structures primarily use crystal lattices as basic units, forming superstructures with high specific strength and excellent energy absorption performance through periodic spatial topological design. These structures can significantly improve mechanical properties, such as strength, stiffness, and impact resistance, while maintaining low density, and are therefore widely used in aerospace, robotics, and high-end equipment fields with extremely high requirements for lightweighting and mechanical performance. However, in the consumer goods sector, especially in applications that come into direct contact with the human body, such as eyeglass frames and wearable devices, traditional lattice structures exhibit several limitations. On the one hand, the large lattice pore size results in insufficient surface density; on the other hand, lattice structures have poor formability in components with complex curved surfaces or small-radius arc surfaces, easily leading to fracture, warping, or localized collapse defects, thus limiting their widespread application in consumer goods. Therefore, in this technical field, there is an urgent need to develop a 3D-printing process and component structure for titanium alloys (Ti6Al4V) that combines excellent formability and surface density. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a process and a finished product for laser powder bed melting forming of Ti6Al4V titanium alloy microporous structures. The purpose is to provide a laser powder bed melting forming process and finished product for Ti6Al4V that can simultaneously achieve a controllable internal microporous structure and a dense external surface, thereby solving the problem of poor formability of complex curved surfaces in traditional lattice structures used in consumer products such as eyeglasses.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: According to a first aspect of the present invention, a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts is provided, comprising: Ti6Al4V titanium alloy powder is available; In a laser powder bed melting device, the titanium alloy powder is spread layer by layer and then laser-scanned and melted. The laser scanning melting process includes performing a fill scan and a contour scan on each forming layer. The fill scan and the contour scan use different combinations of laser process parameters to form a microporous structure inside the part and to densify the surface of the part. The laser process parameters for the filling scan are: laser power 160-200W, scanning spacing 0.03-0.07mm; The laser process parameters for contour scanning are: laser power 170-200W, scanning spacing 0.03-0.07mm.

[0006] In one possible implementation of the first aspect, the laser process parameters for the filling scan further include: a scanning speed of 1200-2400 mm / s; The laser process parameters for contour scanning also include: scanning speed of 1150-2000 mm / s.

[0007] In one possible implementation of the first aspect, the scan layer thickness of the fill scan and the contour scan is 0.03-0.04 mm.

[0008] In one possible implementation of the first aspect, the size of the microporous structure is 50-250 μm.

[0009] In one possible implementation of the first aspect, the Ti6Al4V titanium alloy powder has a particle size of 15-45 μm and a powder density greater than 98%.

[0010] In one possible implementation of the first aspect, the laser power for the fill scan is 160W, the scanning speed is 1200mm / s, and the scanning interval is 0.03mm; the laser power for the contour scan is 200W, the scanning speed is 2000mm / s, and the scanning interval is 0.03mm.

[0011] In one possible implementation of the first aspect, the laser power for the fill scan is 200W, the scanning speed is 2000mm / s, and the scanning interval is 0.04mm; the laser power for the contour scan is 170W, the scanning speed is 1800mm / s, and the scanning interval is 0.04mm.

[0012] In one possible implementation of the first aspect, the laser power for the fill scan is 180W, the scanning speed is 2400mm / s, and the scanning interval is 0.05mm; the laser power for the contour scan is 175W, the scanning speed is 1150mm / s, and the scanning interval is 0.05mm.

[0013] In one possible implementation of the first aspect, the component is an eyeglass part, which is a nose pad or temple.

[0014] According to a second aspect of the present invention, a Ti6Al4V titanium alloy microporous structure component manufactured by the aforementioned process is provided, the component being an eyeglass part, wherein the eyeglass part is a nose pad or temple.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: This invention provides a process for laser powder bed fusion forming of microporous Ti6Al4V titanium alloy parts. By performing filling and contour scanning on each forming layer separately and employing variable laser process parameters, a composite structure with a sparse inner layer and a dense outer layer is achieved. Contour scanning, using a scanning interval of 0.03-0.07 mm and a laser power of 170-200 W, can form a continuous dense layer on the outer surface of the part, fundamentally solving the problem of surface non-density caused by exposed pores in traditional lattice structures, thus meeting the requirements of consumer products such as eyeglasses. Simultaneously, the internal filling region, using a scanning interval of 0.03-0.07 mm and a laser power of 160-200 W, controllably forms a microporous structure of 50-250 μm, giving the part excellent breathability. Traditional periodic lattice structures are prone to stress concentration at complex curved surfaces or small-radius arc surfaces, leading to component fracture or forming defects. The microporous structure formed by this invention lacks macroscopic lattice characteristics, exhibiting a more uniform and discontinuous distribution. This allows it to better adapt to surface variations, effectively avoiding warping, collapse, or fracture problems that easily occur when forming complex geometries. Consequently, it significantly improves the forming success rate of components with complex ergonomic curved surfaces, such as nose pads and temples for eyeglasses. This process introduces a microporous structure within the Ti6Al4V material, achieving lightweight components, which is crucial for eyeglass frames that require prolonged wear. Simultaneously, the internal microporous structure enhances skin breathability, effectively reducing sweat accumulation. Furthermore, the dense surface layer and titanium alloy body ensure the overall mechanical properties of the component. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 The image shows the microporous structure of the part prepared in Example 1.

[0018] Figure 2 The image shows the microporous metallographic image of the part prepared in Example 2.

[0019] Figure 3 The image shows the microporous metallographic image of the part prepared in Example 3.

[0020] Figure 4 The image shows the microporous metallographic image of the part prepared in Example 4.

[0021] Figure 5 The image shows the microporous metallographic image of the part prepared in Example 5.

[0022] Figure 6 This is a graph showing the relationship between printing parameters and micropore structure dimensions.

[0023] Figure 7 The image shows a photograph of the actual product printed according to Example 1, with the small dots on the surface representing a microporous structure. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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, 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.

[0025] Example 1 This embodiment provides a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, and the specific steps are as follows: S1: Provides Ti6Al4V titanium alloy spherical powder with a particle size range of 15-45 μm.

[0026] S2: In a laser powder bed melting device, the above-mentioned titanium alloy powder is spread layer by layer on the molded substrate with a powder density of more than 98%.

[0027] S3: Under an inert gas protective atmosphere, perform a fill scan and a contour scan on each forming layer. The fill scan parameters are: laser power of 160 W, scanning speed of 1200 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.03 mm.

[0028] The contour scanning parameters are: laser power of 200 W, scanning speed of 2000 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.03 mm.

[0029] This embodiment addresses the contradictory requirements of high breathability at the nose pad contact surface with the skin, while maintaining a dense and durable outer surface. It proposes a decoupled LPBF forming strategy involving filling and pore formation to achieve contour densification. In the filling area, a filling laser power of 160 W, a scanning speed of 1200 mm / s, and an extremely small scanning spacing of 0.03 mm are used. By precisely controlling the effective overlap of adjacent melt channels through low power, small spacing, and precise energy control of the overlap relationship, the molten pool maintains continuous forming while stably retaining unfused micro-regions at the melt channel boundaries, thus forming a uniformly distributed microporous structure. Figure 1 It can be seen that the micropores are mainly located between the melt channels and are arranged regularly along the scanning trajectory. The pore size is concentrated in 50–80 μm, and the pore shape and size fluctuate little, which shows that the pore formation mechanism has repeatable and batch-reproducible process controllability.

[0030] To avoid a porous structure leading to a non-dense outer surface, this embodiment employs a high-energy fast-scan contouring strategy with a laser power of 200 W and a scanning speed of 2000 mm / s in the contour area. This creates a wide, shallow molten pool in the contour area and fully remelts and shapes the edges, achieving a dense outer surface without damaging the internal interconnected micropores. Therefore, this process can simultaneously achieve: a highly permeable microporous network with an internal porosity of approximately 90%, and a dense outer surface that meets wearing requirements. For a corresponding application to eyeglass nose pads, see [link to eyeglass nose pad application]. Figure 7 The microporous structure enhances the ventilation and perspiration channels at the contact surface between the nose pad and the skin, reducing the slippage and stuffiness caused by sweat buildup.

[0031] Example 2 This embodiment provides a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, and the specific steps are as follows: S1: Provides Ti6Al4V titanium alloy spherical powder with a particle size range of 15-45 μm.

[0032] S2: In a laser powder bed melting device, the above-mentioned titanium alloy powder is spread layer by layer on the molded substrate with a powder density of more than 98%.

[0033] S3: Under an inert gas protective atmosphere, perform fill scanning and contour scanning on each forming layer. The fill scanning parameters are: laser power of 200 W, scanning speed of 2000 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.04 mm.

[0034] The contour scanning parameters are: laser power of 170 W, scanning speed of 1800 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.04 mm.

[0035] In this embodiment, a filling laser power of 200 W, a scanning speed of 2000 mm / s, and a scanning spacing of 0.04 mm are used in the filling area. By controlling the effective overlap of adjacent melt channels through high-power, small-pitch energy input and overlapping relationships, the molten pool can maintain continuous forming while stably retaining dimensionally controllable unfused micro-regions at the melt channel boundaries, thereby forming a connected microporous network with an internal porosity of approximately 90%. Figure 2 It can be seen that the micropores are mainly distributed between adjacent melt channels and are arranged regularly along the scanning trajectory. The pore size is concentrated in 100–150 μm, and the pore shape and size fluctuate little. This indicates that the obtained pores are not random defects, but a repeatable and batch-reproducible manufacturing result determined by power, speed and spacing.

[0036] Compared to the pore size range (50–80 μm) of Example 1, this embodiment achieves a larger pore size range under different parameter combinations, thereby verifying that the present invention can achieve pore size level / customization control by adjusting the energy input of the filling area and the overlap conditions of the melt channel: for example, for wearers who sweat easily, have sensitive skin, or require stronger ventilation, a larger pore size can be selected to enhance ventilation and perspiration. This component is also a nose pad component for glasses. The actual product appearance photograph obtained by this embodiment is comparable to that of the product photograph obtained in Example 1. This nose pad can effectively improve the ventilation efficiency of the contact surface between the wearer and the skin, and avoid glasses slippage caused by sweat accumulation.

[0037] Example 3 This embodiment provides a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, and the specific steps are as follows: S1: Provides Ti6Al4V titanium alloy spherical powder with a particle size range of 15-45 μm.

[0038] S2: In a laser powder bed fusion (L-PBF) device, the above-mentioned titanium alloy powder is spread layer by layer on the molded substrate with a powder density of more than 98%.

[0039] S3: Under an inert gas protective atmosphere, perform fill scanning and contour scanning on each forming layer. The fill scanning parameters are: laser power of 180 W, scanning speed of 2400 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.05 mm.

[0040] The contour scanning parameters are: laser power of 175 W, scanning speed of 1150 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.05 mm.

[0041] In this embodiment, a filling laser power of 180 W, a scanning speed of 2400 mm / s, and a scanning spacing of 0.05 mm are used in the filling area. This combination of power and large spacing appropriately reduces the energy input per unit volume while increasing the geometric spacing between adjacent melt channels, ensuring forming continuity. Furthermore, it stably forms and retains unfused micro-regions at the melt channel boundaries, creating an interconnected microporous structure with a porosity of approximately 85%. Figure 3As can be seen, the micropores are mainly distributed between adjacent melt channels and arranged regularly along the scanning trajectory. The pore size is concentrated in 100–150 μm, and the pore shape and size fluctuate little, indicating that the obtained pores are not random defects. Meanwhile, this parameter combination further expands the selectable range of pore size and porosity compared to the small-pitch / high-overlap condition, providing manufacturable pore design freedom for different nose pad structures and different wearing needs. This component is also a nose pad part for eyeglasses. The actual product appearance photograph obtained in this embodiment is comparable to that of the product photograph obtained in Example 1. This nose pad can effectively improve the ventilation efficiency of the contact surface between the wearer and the skin, avoiding eyeglass slippage caused by sweat accumulation.

[0042] Example 4 This embodiment provides a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, and the specific steps are as follows: S1: Provides Ti6Al4V titanium alloy spherical powder with a particle size range of 15-45 μm.

[0043] S2: In a laser powder bed fusion (L-PBF) device, the above-mentioned titanium alloy powder is spread layer by layer on the molded substrate with a powder density of more than 98%.

[0044] S3: Under an inert gas protective atmosphere, perform fill scanning and contour scanning on each forming layer. The fill scanning parameters are: laser power of 200 W, scanning speed of 2400 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.07 mm.

[0045] The contour scanning parameters are: laser power of 180 W, scanning speed of 1150 mm / s, scanning layer thickness of 0.03 mm, and scanning spacing of 0.07 mm.

[0046] like Figure 4 As shown, this embodiment, by increasing the scanning interval to 0.07 mm and combining it with a high filling scanning speed of 2400 mm / s, further reduces the energy input per unit volume and weakens the effective overlap between adjacent melt channels, thereby stably enlarging the melt channel gap (unfused micro-region), achieving an upper limit micropore size of 200–250 μm achievable under the process conditions of this invention. Simultaneously, the internal porosity remains at a high level of 92%, indicating that this invention not only enables continuous control of pore size from small to large, but also maintains a stable interconnected channel network even with increased pore size.

[0047] It is important to emphasize that although the micropore size in this embodiment reaches its maximum setting, a continuous and dense outer shell layer can still be formed in the contour area by using independent and precisely controllable scanning parameters to remelt and reshape the boundary. This ensures that the outer surface of the part maintains good integrity, thereby avoiding the problems of edge collapse and excessive surface openings that are usually associated with large-aperture porous structures. Based on the above characteristics, this parameter combination is more suitable for functional areas with higher requirements for lightweighting and breathability, such as the inner side of the temples and other non-directly highly sensitive contact surfaces. It can improve air exchange and reduce sweat adhesion while reducing material usage and enhancing the dry wearing experience.

[0048] Example 5 This embodiment provides a process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, and the specific steps are as follows: S1: Provides Ti6Al4V titanium alloy spherical powder with a particle size range of 15-45 μm.

[0049] S2: In a laser powder bed melting device, the above-mentioned titanium alloy powder is spread layer by layer on the molded substrate with a powder density of more than 98%.

[0050] S3: Under an inert gas protective atmosphere, perform fill scanning and contour scanning on each forming layer. The fill scanning parameters are: laser power of 200 W, scanning speed of 2400 mm / s, scanning layer thickness of 0.04 mm, and scanning spacing of 0.06 mm.

[0051] The contour scanning parameters in this embodiment are: laser power 180 W, scanning speed 1150 mm / s, scanning layer thickness 0.04 mm, and scanning spacing 0.06 mm. Compared with the previous embodiment, the most critical difference in this embodiment lies in the adjustment of the layer thickness: after setting the layer thickness to 0.04 mm, under the same or similar power / speed conditions, the volume of powder to be melted per unit volume increases, and the equivalent volumetric energy input changes accordingly, causing the re-calibration of the remelting depth of the molten pool on the lower layer and the interlayer fusion behavior to be recalibrated. This difference in layer thickness provides a larger control space for the stable window of the melt channel overlap-unfused micro-region in the filling area, so that the micropore scale can stably fall within the target range; on the other hand, it also places higher demands on the contour area, requiring sufficient boundary remelting and shaping through contour parameters to offset the risk of surface openings or contour discontinuities that may be caused by the increase in layer thickness.

[0052] like Figure 5As shown, with the aforementioned 0.04 mm layer thickness and contour densification parameters, this embodiment still forms a controllable and uniform interconnected microporous structure inside the part, successfully fabricating a nose pad for eyeglasses with a pore size of approximately 150–220 μm and a porosity of up to 85%. The figure shows a uniform micropore distribution and minimal pore size fluctuation, indicating that the pores are not random defects. Simultaneously, thanks to the effective remelting and shaping of the contour region at the boundary, the outer surface of the part achieves densification, and the actual product appearance is comparable to that of Example 1, verifying the manufacturability of balancing internal breathability and external surface integrity under different layer thickness conditions. For nose pad applications, the interconnected microporous network can improve the ventilation and perspiration efficiency of the skin contact surface, reducing slippage and stuffiness caused by sweat accumulation.

[0053] like Figure 6 As shown, under the condition that other forming conditions remain consistent, the micropore diameter exhibits a monotonically increasing relationship with the increase of the scanning spacing. Specifically, when the scanning spacing gradually increases from 0.03 mm to 0.07 mm, the micropore diameter steadily increases from approximately 50–80 μm to approximately 200–250 μm, and the overall trend is continuous and predictable. This result indicates that the micropores formed by this invention are not random pores caused by powder fluctuations or occasional defects, but rather a controllable structure dominated by the degree of overlap of the melt channels determined by the scanning spacing: the increase in scanning spacing leads to a decrease in the overlap between adjacent melt channels, which increases the size of the unfused micro-regions retained at the melt channel boundaries, thereby achieving adjustable enlargement of the micropore diameter. Therefore, this invention establishes a clear mapping relationship between scanning spacing and micropore diameter, enabling quantitative design and stable reproduction of micropore diameter within the range of approximately 50–250 μm by adjusting the scanning spacing. This demonstrates that the process parameter window of this invention is wide and highly controllable, suitable for customized manufacturing of microporous structures for different product parts and different wearing requirements.

[0054] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts, characterized in that, include: Ti6Al4V titanium alloy powder is available; In a laser powder bed melting device, the titanium alloy powder is spread layer by layer and then laser-scanned and melted. The laser scanning melting process includes performing a fill scan and a contour scan on each forming layer. The fill scan and the contour scan use different combinations of laser process parameters to form a microporous structure inside the part and to densify the surface of the part. The laser process parameters for the filling scan are: laser power 160-200W, scanning spacing 0.03-0.07mm; The laser process parameters for contour scanning are: laser power 170-200W, scanning spacing 0.03-0.07mm.

2. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 1, characterized in that, The laser process parameters for the filling scan also include: scanning speed 1200-2400 mm / s; The laser process parameters for contour scanning also include: scanning speed of 1150-2000 mm / s.

3. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 1, characterized in that, The scan layer thickness for the fill scan and the contour scan is 0.03-0.04 mm.

4. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 1, characterized in that, The size of the microporous structure is 50-250 μm.

5. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 1, characterized in that, The Ti6Al4V titanium alloy powder has a particle size of 15-45μm and a powder density greater than 98%.

6. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 2, characterized in that, The laser power for the fill scan is 160W, the scanning speed is 1200mm / s, and the scanning interval is 0.03mm; the laser power for the contour scan is 200W, the scanning speed is 2000mm / s, and the scanning interval is 0.03mm.

7. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 2, characterized in that, The laser power for the fill scan is 200W, the scanning speed is 2000mm / s, and the scanning interval is 0.04mm; the laser power for the contour scan is 170W, the scanning speed is 1800mm / s, and the scanning interval is 0.04mm.

8. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to claim 2, characterized in that, The laser power for the fill scan is 180W, the scanning speed is 2400mm / s, and the scanning interval is 0.05mm; the laser power for the contour scan is 175W, the scanning speed is 1150mm / s, and the scanning interval is 0.05mm.

9. The process for laser powder bed fusion forming of Ti6Al4V titanium alloy microporous structure parts according to any one of claims 1 to 8, characterized in that, The component is an eyeglass part, which is a nose pad or temple.

10. A Ti6Al4V titanium alloy microporous structure component manufactured by the process described in any one of claims 1 to 9, characterized in that, The component is an eyeglass part, which is a nose pad or temple.

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