Titanium alloy, spectacle frame and 3D printing method of spectacle frame

Abstract

According to the titanium alloy, the spectacle frame and the 3D printing method of the titanium alloy, titanium alloy powder serves as a raw material, SLM printing forming is adopted, and the titanium alloy comprises metal I and metal II; the content of the metal I is 5-20%, the content of the metal II is 5-15%, and the balance is titanium and unremovable impurities; wherein the metal I is one or more of Cr, Pt, Zr and Mo, and the metal II is one or more of Ta, Nb, No, Re, Rh, Sc, Ho, Co and Ir. And toxic metals such as nickel, iron, aluminum and the like are not contained, so that skin allergy is not easily caused, and the manufacturing time and cost are saved.

Description

Technical Field

[0001] This invention belongs to the field of 3D printing and relates to a titanium alloy and an eyeglass frame, as well as a 3D printing method thereof. Background Technology

[0002] 3D printing technology emerged in the 1980s and has been widely used in various industries due to its excellent properties such as meeting personalized needs, producing arbitrarily complex parts, and saving materials.

[0003] With the increasing use of electronic products, the number of people with myopia is also growing, leading to a surge in demand for eyeglasses. Eyeglass frames are a crucial component of eyeglasses. When people wear eyeglasses, the prolonged pressure on the bridge of the nose can cause indentation. Additionally, when people sweat, the glasses tend to slip down, requiring constant adjustments, which severely impacts comfort and convenience.

[0004] Titanium alloys have advantages such as light weight, corrosion resistance, high strength, and good heat resistance, and have been applied in the eyewear market. Commonly used titanium alloy eyeglass frames mainly include TA1, α+β titanium alloy, and shape memory nickel-titanium alloy. Pure TA1 has advantages such as light weight, corrosion resistance, and good biocompatibility, but its strength and elastic modulus are low, making it easy to be damaged. α+β titanium alloy and shape memory nickel-titanium alloy have higher strength, corrosion resistance, and fatigue resistance than TA1, but their application is limited by the presence of toxic elements such as Ni, V, and Al, as well as poor weldability and allergenicity. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a titanium alloy and eyeglass frame and a 3D printing method thereof, which do not contain toxic metals such as nickel, iron, and aluminum, and therefore are less likely to cause skin allergies.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A titanium alloy comprising metal I and metal II; The content of metal I is 5%~20%, the content of metal II is 5%~15%, and the balance is titanium and non-removable impurities; wherein metal I is one or more of Cr, Pt, Zr and Mo, and metal II is one or more of Ta, Nb, No, Re, Rh, Sc, Ho, Co and Ir.

[0007] An eyeglass frame made of the aforementioned titanium alloy.

[0008] A 3D printing method for eyeglass frames, using titanium alloy powder as raw material and employing SLM printing.

[0009] Preferably, the titanium alloy powder has an average particle size of 30-40 μm.

[0010] Furthermore, the weight percentage of titanium alloy powder with a particle size of 18 μm or less does not exceed 10%, and the weight percentage of powder with a particle size of 60 μm or greater also does not exceed 10%.

[0011] Preferably, the sphericity of the titanium alloy powder is greater than 0.95, the loose density of the titanium alloy powder is 2.4~2.8 g / cm³, and the flowability of the titanium alloy powder is ≤50s / 50g.

[0012] Preferably, before printing, a general eyeglass frame model is created, and the user's face and head are 3D scanned to collect personalized data. The general eyeglass frame model is then modified to generate a personalized data model, which is then printed.

[0013] Preferably, during the printing process, the laser power is 160-350w, the scanning speed is 0.5-1.6m / s, the scanning spacing is 0.05-0.1mm, and the scanning layer thickness is 0.02-0.08mm.

[0014] Preferably, during the printing process, nitrogen is used as the inclusion gas, and the oxygen content is less than 0.08%.

[0015] Preferably, the titanium alloy eyeglass frames printed by SLM are ground, polished, and sandblasted, and finally colored.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The titanium alloy described in this invention has good alloying conditions, and the other metal I and metal II materials selected are combined with the titanium alloy in different proportions to achieve different properties of the titanium alloy, thereby enriching the alloy types of titanium alloy eyeglass frames and meeting the performance needs of different groups of people. It has good corrosion resistance, light weight, high strength, good biocompatibility, high strength, impact resistance, good flexibility, and improved wearing comfort. It does not contain toxic metals such as nickel, iron, and aluminum, so it is not likely to cause skin allergies.

[0017] Furthermore, integrated printing production reduces the number of parts, avoiding the trouble caused by missing parts during use, improving ease of use, and enabling mass production after finalization, saving manufacturing time and costs.

[0018] Furthermore, by utilizing 3D printing technology, users can meet various needs and personalize their designs, making titanium alloy eyeglass frames fit the human face better and improving their lightness and comfort. Attached Figure Description

[0019] Figure 1 This is a flowchart of the 3D printing process for titanium alloys and eyeglass frames according to the present invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms “installation,” “connection,” and “linkage” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection, an electrical connection, or a connection that allows communication; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements or an interaction between two elements. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0025] The titanium alloy eyeglass frame of the present invention is made of titanium alloy, comprising metal I and metal II; the content of metal I is 5%~20%, the content of metal II is 5%~15%, and the balance is titanium and non-removable impurities; wherein metal I is one or more of Cr, Pt, Zr and Mo, and metal II is one or more of Ta, Nb, No, Re, Rh, Sc, Ho, Co and Ir.

[0026] like Figure 1 The diagram illustrates the 3D printing method for titanium alloy eyeglass frames according to the present invention, comprising the following processes: Step (1): Generation of user-personalized data models.

[0027] Step (2): Prepare titanium alloy powder.

[0028] Step (3): SLM printing.

[0029] Step (4): Post-process the printed eyeglass frames.

[0030] As described in step (1), a general eyeglass frame model is established, and the user's face and head are scanned in 3D to collect the user's personalized data. The general eyeglass frame model is then modified to generate the user's personalized data model.

[0031] The titanium alloy powder mentioned in step (2) includes metal I and metal II; the content of metal I is 5%~20%, the content of metal II is 5%~15%, and the balance is titanium and non-removable impurities; wherein metal I is one or more of Cr, Pt, Zr and Mo, and metal II is one or more of Ta, Nb, No, Re, Rh, Sc, Ho, Co and Ir.

[0032] The average particle size of the titanium alloy powder is 30-40 μm. The weight percentage of the titanium alloy powder with a particle size of less than or equal to 18 μm does not exceed 10%, and the weight percentage of the powder with a particle size of greater than or equal to 60 μm also does not exceed 10%. The sphericity of the titanium alloy powder is greater than 0.95, the loose density of the titanium alloy powder is 2.4~2.8 g / cm³, and the flowability of the titanium alloy powder is ≤50s / 50g.

[0033] In step (3), the 3D printing equipment selected is the laser sintering equipment (SLM).

[0034] The SLM printing process parameters are as follows: laser power 160-350w, scanning speed 0.5-1.6m / s, scanning spacing 0.05-0.1mm, and scanning layer thickness 0.02-0.08mm.

[0035] Nitrogen is used as the inclusion gas during the printing process, and the oxygen content is controlled to be less than 0.08%.

[0036] In step (4), the titanium alloy eyeglass frames printed by SLM are ground, polished and sandblasted, and finally colored.

[0037] Example 1 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Personalized data collection of users and generation of their models.

[0038] (2) Titanium alloy eyeglass frame material composition: Cr 5%, Zr 10%, Nb 15%, No 5%, Ti as balance, and unavoidable impurities.

[0039] (3) SLM printing: laser power 160w, scanning speed 0.5m / s, scanning spacing 0.05mm, scanning layer thickness 0.02mm.

[0040] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0041] Example 2 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0042] (2) Titanium alloy eyeglass frame material composition: Cr 5%, Pt 10%, Ta 15%, Nb 5%, Ti as balance, and unavoidable impurities.

[0043] (3) SLM printing: laser power 160w, scanning speed 0.5m / s, scanning spacing 0.05mm, scanning layer thickness 0.02mm.

[0044] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0045] Example 3 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0046] (2) Titanium alloy eyeglass frame material composition: Zr 5%, Mo 10%, Re 15%, Rh 5%, Ti as balance, and unavoidable impurities.

[0047] (3) SLM printing: laser power 160w, scanning speed 0.5m / s, scanning spacing 0.05mm, scanning layer thickness 0.02mm.

[0048] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0049] Example 4 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0050] (2) Titanium alloy eyeglass frame material composition: Pt 5%, Zr 10%, Sc 15%, Ho 5%, Ti as balance, and unavoidable impurities.

[0051] (3) SLM printing: laser power 160w, scanning speed 0.5m / s, scanning spacing 0.05mm, scanning layer thickness 0.02mm.

[0052] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0053] Example 5 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0054] (2) Titanium alloy eyeglass frame material composition: Cr 5%, Mo 10%, Co 15%, Ir 5%, Ti as balance, and unavoidable impurities.

[0055] (3) SLM printing: laser power 160w, scanning speed 0.5m / s, scanning spacing 0.05mm, scanning layer thickness 0.02mm.

[0056] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0057] Example 6 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0058] (2) Titanium alloy eyeglass frame material composition: Cr 5%, Zr 10%, Nb 15%, No 5%, Ti as balance, and unavoidable impurities.

[0059] (3) SLM printing: laser power 180w, scanning speed 0.8m / s, scanning spacing 0.07mm, scanning layer thickness 0.05mm.

[0060] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0061] Example 7 The titanium alloy eyeglass frame of this embodiment is prepared through the following steps: (1) Collection of personalized user data and generation of its model.

[0062] (2) Titanium alloy eyeglass frame material composition: Cr 5%, Pt 10%, Ta 15%, Nb 5%, Ti as balance, and unavoidable impurities.

[0063] (3) SLM printing: laser power 350w, scanning speed 1.6m / s, scanning spacing 0.1mm, scanning layer thickness 0.08mm.

[0064] (4) Polish and sandblast the printed titanium alloy eyeglass frames, and finally color them.

[0065] Comparative Example The titanium alloy eyeglass frame in this embodiment is obtained through the same preparation steps as in Example 1. The only difference between the two is the different proportions of titanium alloy materials. In the comparative example, the eyeglass frame is made of TC4, a commonly used material for laser sintering, selected by SLM.

[0066] The alloy properties of the titanium alloy eyeglass frames prepared in Examples 1-7 were tested and labeled as Samples 1-7, and the experimental example was labeled as Sample 8. The test results are shown in Table 1.

[0067] Table 1 Performance Test Results

[0068] By comparing the eyeglass frames prepared in Examples 1-7 and the experimental examples, it was found that, under the same printing process parameters, pure titanium eyeglass frames have lower strength and lower flexibility compared to other eyeglass frames containing metal dopants. Considering both strength and flexibility, the material ratio of Example 2 was selected.

[0069] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0070] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0072] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0073] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

[0074] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A titanium alloy, characterized in that: Includes Metal I and Metal II; The content of metal I is 5% to 20%, the content of metal II is 5% to 15%, and the balance is titanium and unremovable impurities; wherein the metal I is one or more of Cr, Pt, Zr and Mo, and the metal II is one or more of Ta, Nb, No, Re, Rh, Sc, Ho, Co and Ir.

2. A spectacle frame, characterized in that: The material is the titanium alloy described in claim 1.

3. A 3D printing method based on the eyeglass frame according to claim 2, characterized in that: Titanium alloy powder is used as raw material and SLM printing is adopted.

4. The 3D printing method of eyeglass frames according to claim 3, characterized in that: The average particle size of the titanium alloy powder is 30-40 μm.

5. The 3D printing method of eyeglass frames according to claim 4, characterized in that: The weight proportion of titanium alloy powder with a particle size less than or equal to 18 μm does not exceed 10%, and the weight proportion of powder with a particle size greater than or equal to 60 μm does not exceed 10%.

6. The 3D printing method of eyeglass frames according to claim 3, characterized in that: The sphericity of the titanium alloy powder is greater than 0.95, the bulk density of the titanium alloy powder is 2.4~2.8g / cm³, and the fluidity of the titanium alloy powder is ≤50s / 50g.

7. The 3D printing method of eyeglass frames according to claim 3, characterized in that: Before printing, a universal glasses frame model is established, a 3D scan of the user's face and head is performed to collect the user's personalized data, the universal glasses frame model is modified, a personalized data model is generated, and the personalized data model is printed.

8. The 3D printing method of eyeglass frames according to claim 3, characterized in that: During the printing process, the laser power is 160-350w, the scanning speed is 0.5-1.6m / s, the scanning spacing is 0.05-0.1mm, and the scanning layer thickness is 0.02-0.08mm.

9. The 3D printing method of eyeglass frames according to claim 3, characterized in that: During the printing process, nitrogen is used as the containing gas, and the oxygen content is less than 0.08%.

10. The 3D printing method of eyeglass frames according to claim 3, characterized in that: The titanium alloy glasses frames printed by SLM are ground, polished, sandblasted, and finally colored.

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