Processing method for improving glass microcracks

Abstract

The invention discloses a processing method for improving glass microcracks, and aims to solve the technical problems that the glass has microcracks and the microcracks cannot be repaired when the glass is processed in the prior art. According to the invention, through a series of treatment steps of ultrasonic cleaning, acid pickling, alkali washing and chemical strengthening treatment on the preliminarily processed glass, the micro-crack phenomenon of the glass during processing is effectively improved, meanwhile, the glass with the micro-crack can be repaired, and the strength performance of the glass is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cover glass processing, and in particular to a processing method for improving glass microcracks. Background Art

[0002] With the rapid development of display technology, various advanced display devices are emerging. In the process of continuous development of display devices, glass as a display protection device has also received more and more attention. Glass has become the preferred protection material for many display devices due to its advantages such as high transparency, good hardness and chemical stability.

[0003] Especially in terms of strength performance, the strength of glass is directly related to the durability and safety of display devices. High-strength glass can better resist external impact, scratches and pressure, providing reliable protection for display devices. However, glass will inevitably produce microcracks due to various reasons during processing. These reasons may include mechanical stress during cutting, thermal stress during high-temperature processing, uneven reactions during chemical treatment, etc. The generation of microcracks will not only affect the appearance quality of the glass, but more importantly, it will cause the strength performance of the glass to decrease.

[0004] The presence of microcracks reduces the strength of glass and is prone to further expansion during subsequent use, causing the glass to break or be damaged. This is a serious safety hazard for display devices, which may affect the normal use of the device and even cause harm to the user. Therefore, a process technology that can effectively improve glass microcracks is needed to reduce the generation of microcracks and repair glass that has already developed microcracks to improve the strength of the glass. Summary of the invention

[0005] The object of the present invention is to provide a processing method for improving glass microcracks, so as to overcome the disadvantages that microcracks will appear in the glass and cannot be repaired when the glass is processed by the existing process technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A processing method for improving glass microcracks comprises the following steps: S1, pre-treating the glass to remove impurities on the glass surface; S2, chemically strengthen the glass to obtain high surface quality; S3, the glass is subjected to surface refinement processing to obtain excellent surface quality.

[0007] Furthermore, when the glass is subjected to chemical strengthening treatment, the glass is placed in a high-temperature salt bath furnace for strengthening, and the temperature in the high-temperature salt bath furnace is 380°C.

[0008] Furthermore, the mass percentages of the components in the bath used in the chemical strengthening treatment are as follows: KNO 3 , 97%, LiNO 3 , 3%.

[0009] Furthermore, the strengthening time of the chemical strengthening treatment of the glass is 60 minutes to 360 minutes.

[0010] When chemically strengthening glass, the glass is placed in a high-temperature salt bath furnace at 380°C and 97% by mass of KNO 3 and 3% LiNO 3 Bath liquid, within the strengthening time of 60min~360min, can significantly improve the surface quality and strength performance of glass, effectively improve the problem of micro cracks in glass, and enhance the durability and safety of glass.

[0011] Further, the pretreatment of the glass includes the following steps: S11, performing size processing and chamfering of the glass; S12, ultrasonic cleaning to remove impurities and debris remaining on the glass after processing; S13, pickling to remove residual impurities, dirt and oxides on the glass surface; S14, ultrasonic cleaning to remove residual acid on the glass; S15, alkali washing to remove grease and other organic matter on the glass surface; S16, ultrasonic cleaning to remove residual alkali solution on the glass.

[0012] Furthermore, 100% pure water is used for ultrasonic cleaning of the glass, the ultrasonic frequency is 30-50 khz, and the cleaning time is 3-5 min.

[0013] Furthermore, the glass is pickled for 5 to 10 minutes, and the mass percentages of the components in the washing solution used are as follows: HF, 5%~20%; H 2 C 2 O 4 , 0%~15%; H 2 SO 4 , 0%~15%; HCL, 0%~15%; HNO 3 , 0%~15%; the rest is pure water.

[0014] Furthermore, the mass percentages of the components in the washing solution used for alkali washing of glass are as follows: NaOH, 4%~20%; NaHCO 3 , 0%~15%; the rest is pure water.

[0015] The glass is acid-washed and alkaline-washed to remove residual impurities, dirt and oxides, as well as grease and other organic matter on the glass surface, making the glass surface purer and preparing for improving the strength and quality of the glass. 2 C 2 O 4 , H 2 SO 4 , HCL, HNO 3 Combined with pure water, it can effectively remove specific impurities and oxides within 5 to 10 minutes, ensuring the cleanliness and quality stability of the glass surface. 3 The combination with pure water can effectively remove grease and other organic matter on the glass surface. The mass percentage of each component ensures the effectiveness and safety of alkaline cleaning.

[0016] Furthermore, when fine-finishing the surface of the glass, a slow polishing method is used for fine-finishing polishing.

[0017] Furthermore, the fine polishing time is 30 min.

[0018] The glass surface is refined by slow polishing. 30 minutes of fine polishing time can make the glass obtain excellent surface quality, improve the appearance and use value of the glass.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a processing method for improving glass microcracks. By performing a series of processing steps of ultrasonic cleaning, acid cleaning, alkali cleaning, and chemical strengthening treatment on the glass that has undergone preliminary processing, the phenomenon of microcracks in the glass during processing is effectively improved. At the same time, the glass that has already produced microcracks can be repaired, thereby improving the strength performance of the glass. The processing process described in the present invention includes multiple cleaning processes. After each treatment of the glass, the glass will be ultrasonically cleaned again to remove various impurities remaining in the processing process, ensure the high cleanliness of the glass surface, and avoid residual acid or residual alkali or salt bath residues affecting subsequent steps. The chemical strengthening process treats the glass for 60 minutes to 360 minutes. This step effectively improves the problem of glass microcracks, enables the glass to better resist external impact, scratches and pressure, and provides more reliable protection for display devices. Finally, the glass is finely polished to improve the aesthetics of the glass while further enhancing its performance.

[0020] In summary, the processing method for improving glass microcracks described in the present invention can effectively reduce the generation of glass microcracks, repair glass that has already generated microcracks, greatly improve the strength performance of the glass, and provide a reliable guarantee for the development of display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic flow chart of a processing method for improving glass microcracks in an embodiment of the present invention.

[0022] Figure 2 The figure is a schematic diagram of a glass pretreatment process of a processing method for improving glass microcracks in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should belong to the scope of protection of the present invention. In the following, only some exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Embodiment 1: like Figure 1 A processing method for improving glass microcracks in an embodiment of the present invention is shown, comprising the following steps: S1, pre-treating the glass to remove impurities on the glass surface; S2, chemically strengthen the glass to obtain high surface quality; S3, the glass is subjected to surface refinement processing to obtain excellent surface quality.

[0026] Preferably, in this embodiment, when the glass is subjected to chemical strengthening treatment, the glass is placed in a high-temperature salt bath furnace for strengthening, and the temperature in the high-temperature salt bath furnace is 380°C.

[0027] Preferably, the mass percentages of the components in the bath used in the chemical strengthening treatment in this embodiment are as follows: KNO 3 , 97%, LiNO 3 , 3%.

[0028] Preferably, in this embodiment, the strengthening time of chemically strengthening the glass is 60 min to 360 min.

[0029] In this embodiment, the glass is placed in a high-temperature salt bath furnace at 380°C and a KNO3 solution containing 97% by mass is used to chemically strengthen the glass. 3 and 3% LiNO 3 Bath liquid, within the strengthening time of 60min~360min, can significantly improve the surface quality and strength performance of glass, effectively improve the problem of micro cracks in glass, and enhance the durability and safety of glass.

[0030] Preferably, Figure 2 The pretreatment of the glass in this embodiment includes the following steps: S11, performing size processing and chamfering of the glass; S12, ultrasonic cleaning to remove impurities and debris remaining on the glass after processing; S13, pickling to remove residual impurities, dirt and oxides on the glass surface; S14, ultrasonic cleaning to remove residual acid on the glass; S15, alkali washing to remove grease and other organic matter on the glass surface; S16, ultrasonic cleaning to remove residual alkali solution on the glass.

[0031] Preferably, in this embodiment, 100% pure water is used for ultrasonic cleaning of the glass, the ultrasonic frequency is 30-50 khz, and the cleaning time is 3-5 minutes.

[0032] Preferably, in this embodiment, the time for pickling the glass is 5 to 10 minutes, and the mass percentages of the components in the washing solution used are as follows: HF, 5%~20%; H 2 C 2 O 4 , 0%~15%; H 2 SO 4, 0%~15%; HCL, 0%~15%; HNO 3 , 0%~15%; the rest is pure water.

[0033] Preferably, the mass percentages of the components in the washing solution used for alkali washing of glass in this embodiment are as follows: NaOH, 4%~20%; NaHCO 3 , 0%~15%; the rest is pure water.

[0034] In this embodiment, the glass is subjected to acid washing and alkali washing steps to specifically remove residual impurities, dirt and oxides, as well as grease and other organic matter on the glass surface, making the glass surface purer and preparing for improving the strength and quality of the glass. 2 C 2 O 4 , H 2 SO 4 , HCL, HNO 3 Combined with pure water, it can effectively remove specific impurities and oxides within 5 to 10 minutes, ensuring the cleanliness and quality stability of the glass surface. 3 The combination with pure water can effectively remove grease and other organic matter on the glass surface. The mass percentage of each component ensures the effectiveness and safety of alkaline cleaning.

[0035] Preferably, in this embodiment, when performing surface refinement processing on the glass, a slow polishing method is used for refinement polishing.

[0036] Preferably, the fine polishing time in this embodiment is 30 minutes.

[0037] In this embodiment, a slow polishing method is used to perform surface refinement processing on the glass. The 30-minute refinement polishing time can enable the glass to obtain excellent surface quality, thereby improving the aesthetics and use value of the glass.

[0038] Embodiment 2: In another embodiment of a processing method for improving glass microcracks of the present invention, taking the processing of cover glass as an example, the cover glass is processed using the process technology of the present invention. The processing process in this embodiment includes the following steps: S1, select cover glass with a thickness of 0.9 mm, and process the glass into a size of 145.98 mm × 67.78 mm through processing equipment; S2, put the glass into the special rack of the cleaning equipment, sink it into the ultrasonic cleaning machine together with the glass clip, use 100% pure water to perform ultrasonic cleaning on the glass, and keep it at a frequency of 40khz for 5 minutes to remove the residual glass powder and other residues on the glass surface; S3, sinking the glass together with the insert rack into the acid solution, pickling for 5 minutes, and removing impurities and oxides on the surface of the glass; S4, put the glass together with the rack into clean water for ultrasonic cleaning, use 100% pure water to ultrasonically clean the glass, and maintain it at a frequency of 40 khz for 5 minutes; S5, sinking the glass together with the rack into the alkali solution, and washing for 5 minutes to remove grease and other organic matter on the surface of the glass; S6, put the glass together with the rack into clean water, and use 100% pure water to ultrasonically clean the glass for 3 minutes; S7, after transferring the glass to the strengthening rack, the glass is placed in a salt bath, the salt bath temperature is set to 380°C, and the ion exchange is performed for 60 minutes; S8, the glass is removed from the rack, and when the temperature drops to 70°C, the glass is transferred to an ultrasonic cleaning machine and ultrasonically cleaned with 100% pure water at a frequency of 40 kHz for 5 minutes to remove residual molten salt on the surface. After cleaning, the glass is dried in a protective oven; S9, finally, slow fine polishing is performed, and the polishing time is 30 minutes; S10, performing micro-crack detection on the glass.

[0039] Preferably, the mass percentages of the components in the acid solution described in this embodiment are: HF, 20%; H 2 C 2 O 4 , 15%; H 2 SO 4 , 15%; HCL, 15%; HNO 3 , 15%; the rest is pure water.

[0040] Preferably, the mass percentages of the components in the alkali solution described in this embodiment are: NaOH, 20%; NaHCO 3 , 15%; the rest is pure water.

[0041] Preferably, the mass percentages of the components in the bath solution of the salt bath described in this embodiment are: KNO 3 , 97%, LiNO 3 , 3%.

[0042] In the end, this embodiment conducts a comprehensive micro-crack test on the processed glass. The test results show that no micro-cracks are generated, which fully proves that the use of a processing method for improving glass micro-cracks described in the present invention to process cover glass has excellent results. The application of the process technology described in the present invention to cover glass processing can effectively reduce the phenomenon of micro-cracks in the glass. From the size processing and chamfering of the glass, to multiple carefully designed cleaning processes, and then to acid washing, alkali washing and chemical strengthening treatment, each step reduces the possibility of micro-cracks to the greatest extent. The glass treated by this process can better resist external impact, scratches and pressure. In the chemical strengthening treatment, the glass is placed in a salt bath at a specific temperature for ion exchange, so that the strength of the glass is significantly improved. At the same time, the surface refinement processing step gives the glass excellent surface quality, making it smoother and stronger, and can effectively disperse external impact forces and reduce the damage to the glass caused by scratches and pressure.

[0043] Embodiment 3: In another embodiment of a processing method for improving glass microcracks of the present invention, taking the processing of cover glass as an example, a certain number of cover glasses that have not been processed using the process technology of the present invention are randomly selected, and the small short scratches and point scratches on the cover glasses are detected, and then the cover glasses are repaired using the process technology of the present invention. The repair process in this embodiment is as follows: S1, randomly selecting 82 pieces of cover glass that are not processed by the process technology of the present invention, and inspecting the fine short scratches and point scratches on the cover glass; the number of defective products with fine short scratches and point scratches among the 82 pieces of cover glass is 5; S2, put all the glass into the special rack of the cleaning equipment, sink it into the ultrasonic cleaning machine together with the glass clips, use 100% pure water to perform ultrasonic cleaning on the glass, keep it at a frequency of 40khz for 5 minutes to remove the residual glass powder and other residues on the glass surface; S3, sinking all the glass together with the rack into the acid solution, pickling for 5 minutes to remove impurities and oxides on the glass surface; S4, all the glass together with the rack are replaced in clean water for ultrasonic cleaning, and the glass is ultrasonically cleaned using 100% pure water at a frequency of 40 khz for 5 minutes; S5, sinking all the glass together with the rack into the alkali solution, and washing for 5 minutes to remove grease and other organic matter on the surface of the glass; S6, replace all the glass together with the rack into clean water, and use 100% pure water to ultrasonically clean the glass for 3 minutes; S7, after transferring all the glasses to the strengthening rack, they are placed in the salt bath, the salt bath temperature is set to 380°C, and the ion exchange is performed for 360 minutes; S8, remove all the glass from the rack, transfer the glass to an ultrasonic cleaning machine when the temperature drops to 70°C, use 100% pure water to perform ultrasonic cleaning on the glass, maintain it at a frequency of 40 kHz for 5 minutes, remove the residual molten salt on the surface, and dry the glass in a protective oven after the cleaning is completed; S9, finally, slow fine polishing is performed, and the polishing time is 30 minutes; S10, performing micro-crack detection on the glass.

[0044] Preferably, the mass percentages of the components in the acid solution described in this embodiment are: HF, 20%; H 2 C 2 O 4 , 15%; H 2 SO 4 , 15%; HCL, 15%; HNO 3 , 15%; the rest is pure water.

[0045] Preferably, the mass percentages of the components in the alkali solution described in this embodiment are: NaOH, 20%; NaHCO 3 , 15%; the rest is pure water.

[0046] Preferably, the mass percentages of the components in the bath solution of the salt bath described in this embodiment are: KNO 3 , 97%, LiNO 3 , 3%.

[0047] In this embodiment, the glass is finally tested for microcracks. The test results show that the original scratch marks on the glass disappear, and there are no new scratches and microcracks. This result shows that the cover glass can be processed using a processing method for improving glass microcracks described in the present invention, which can repair the glass with microcracks, improve the strength performance of the glass, and provide reliable protection for display devices. During the processing, the glass is comprehensively repaired and strengthened from multiple angles through a series of carefully designed steps, such as ultrasonic cleaning, acid cleaning, alkali cleaning, and chemical strengthening treatment. Ultrasonic cleaning can remove various impurities and residues on the surface of the glass, creating good basic conditions for subsequent processing steps. Acid cleaning and alkali cleaning can specifically remove residual impurities, dirt, oxides, grease and other organic matter on the surface of the glass, further purify the glass surface, and reduce the potential factors for the generation of microcracks. The chemical strengthening treatment link significantly improves the strength performance of the glass through specific processing time and conditions, thereby effectively repairing existing microcracks and improving the strength performance of the glass, providing a solid and reliable guarantee for the development of display devices.

[0048] The present invention provides a processing method for improving glass microcracks. The technology sequentially performs a series of steps such as ultrasonic cleaning, acid cleaning, alkali cleaning and chemical strengthening treatment on the glass after preliminary processing, successfully improving the situation of microcracks appearing in the glass during the processing, and can also repair glass with existing microcracks, thereby significantly improving the strength performance of the glass.

[0049] During the entire processing, multiple cleaning steps are set up. Each time the glass is processed, ultrasonic cleaning is used to remove various impurities remaining during the processing process to ensure that the glass surface is in a highly clean state and to prevent residual acid, alkali or salt bath residues from having adverse effects on subsequent steps. In the chemical strengthening process, the glass will undergo high-temperature salt bath furnace treatment. This process effectively solves the problem of micro-cracks in the glass, allowing the glass to perform better in the face of external impact, scratches and pressure, providing more reliable protection for display devices. Finally, the glass is finely polished, which not only improves the aesthetics of the glass, but also further enhances its performance.

[0050] The process technology described in the present invention can effectively reduce the generation of glass microcracks, and at the same time can repair glass with existing microcracks, greatly improving the strength performance of the glass, and providing a solid and reliable guarantee for the development of display devices.

[0051] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A processing method for improving glass microcracks, characterized in that: The following steps are involved: S1, pre-treating the glass to remove impurities on the glass surface; S2, chemically strengthen the glass to obtain high surface quality; S3, the glass is subjected to surface refinement processing to obtain excellent surface quality.

2. A processing method for improving glass microcracks according to claim 1, characterized in that: When the glass is subjected to chemical strengthening treatment, the glass is placed in a high-temperature salt bath furnace for strengthening, and the temperature in the high-temperature salt bath furnace is 380°C.

3. A processing method for improving glass microcracks according to claim 2, characterized in that: The mass percentages of the components in the bath used for chemical strengthening treatment are as follows: KNO3, 97%, LiNO3, 3%.

4. A processing method for improving glass microcracks according to claim 2, characterized in that: The strengthening time for chemical strengthening treatment of glass is 60min~360min.

5. The method for improving glass microcracks according to claim 1, characterized in that: The pretreatment of glass includes the following steps: S11, performing size processing and chamfering of the glass; S12, ultrasonic cleaning to remove impurities and debris remaining on the glass after processing; S13, pickling to remove residual impurities, dirt and oxides on the glass surface; S14, ultrasonic cleaning to remove residual acid on the glass; S15, alkali washing to remove grease and other organic matter on the glass surface; S16, ultrasonic cleaning to remove residual alkali solution on the glass.

6. A processing method for improving glass microcracks according to claim 5, characterized in that: When ultrasonically cleaning glass, use 100% pure water, the ultrasonic frequency is 30~50khz, and the cleaning time is 3~5min.

7. A processing method for improving glass microcracks according to claim 5, characterized in that: The time for pickling the glass is 5 to 10 minutes, and the mass percentages of the components in the washing solution used are as follows: HF, 5%~20%; H2C2O4, 0%~15%; H2SO4, 0%~15%; HCL, 0%~15%; HNO3, 0%~15%; the rest is pure water.

8. The method for improving glass microcracks according to claim 5, characterized in that: The mass percentages of the components in the washing solution used for alkali washing of glass are as follows: NaOH, 4%~20%; NaHCO3, 0%~15%; the rest is pure water.

9. The method for improving glass microcracks according to claim 1, characterized in that: When fine-finishing the surface of glass, a slow polishing method is used for fine polishing.

10. A processing method for improving glass microcracks according to claim 9, characterized in that: The fine polishing time is 30 minutes.

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