WO2011103798A1 - Chemically strengthened glass capable of subsequently cutting - Google Patents

Abstract

A chemically strengthened glass capable of subsequently cutting is provided. The glass has a Young's modulus of 70-100GPa, a Knoop hardness of 500-800kg/mm² (0.1/20, 100gf, 20s) and a CTE of 5.0-11.0×10^-6/°C.

Description

能进行后续切割的化学钢化玻璃 技术领域 Chemical tempered glass capable of subsequent cutting

本发明涉及能在化学钢化之后进行切割的薄玻璃。 具体地说， 本 发明涉及具有高强度， 高断裂韧性， 高耐磨性的硅酸盐玻璃， 其具有 被化学钢化的性能， 并在钢化之后能进行激光切割。 更具体地， 本发 明涉及能用于电子产品屏幕以及其他涉及高强度薄玻璃的领域， 并在 化学钢化后， 能很好地进行后续激光切割的玻璃。 同时， 本发明还涉 及对所述硅酸盐玻璃的化学钢化方法。 背景技术 The present invention relates to a thin glass that can be cut after chemical tempering. Specifically, the present invention relates to a silicate glass having high strength, high fracture toughness, and high wear resistance, which has chemical tempering properties and can be laser cut after tempering. More specifically, the present invention relates to glass which can be used in electronic product screens and other fields involving high-strength thin glass, and which can perform subsequent laser cutting after chemical tempering. At the same time, the invention also relates to a chemical tempering process for the silicate glass. Background technique

许多技术领域都要求高强度的玻璃。 最典型的提高玻璃强度的方 法是对玻璃进行表面处理， 如酸蚀。 另一种方法则是在玻璃内引入永 久的应力， 即公知的物理钢化 (或者热钢化)和化学钢化。 物理钢化通过迅速冷却玻璃表面引入永久应力。化学钢化则是通过 离子交换产生表面压应力。 两种方法均为业界熟知并广为应用。 如安全 玻璃、 汽车玻璃、 白色家电、 硬盘、 显示器等电子应用的基板玻璃。 对于触摸屏， 通常要求有既薄又经过强化的盖板玻璃以保证既轻 薄又具有抗划伤能力。 由于厚度限制， 薄玻璃无法在厚度方向产生足够高的温度梯度和 冷却速率， 因此很难被物理钢化。 通常厚度小于 2mm的薄玻璃不能被 物理钢化。 因此， 厚度小于 2mm的薄玻璃通常选用化学钢化。 化学钢化玻璃为公知的技术， 例如在专利 US 4,156,755 和 DE 4206268 A1中都有描述。 对化学钢化后的玻璃进行如磨边、 切割等机械加工， 会有很高的 不良率或者根本无法加工。 这是因为加工过程中玻璃制品内较高的内 部应力会导致无法预测的破裂。 但是在特殊的加工流程中， 切割钢化 玻璃可以带来显著的经济效益。 在特殊的情况下， 切割钢化后的薄玻璃是很有优势的， 因为这样 可以钢化大片的平板玻璃然后切割， 从而提高产量。 最常用的玻璃切割方法有， 如机械刀轮切割， 水刀或激光切割。 激光切割具有不产生碎屑， 不易起皮和较高的边界质量等优点。 激光 切割后的边界质量高可以省去对边界的后续加工， 表面质量好可以提 高玻璃的抗划伤性能力从而可以省去后续的表面处理。 因此很有必要 能获得这种能进行后续机械或者激光切割的高强度玻璃。 传统的玻璃切割方法利用机械力划开玻璃表面， 引入外力使得玻 璃分离， 完成切割。 使用这种方法， 玻璃边缘上会残留有微裂紋， 起 皮， 玻璃表面会被破坏， 并且有玻璃碎屑残留。 相对于传统的机械切割， 如金属和金刚石刀轮切割， 激光切割以 其优良的切割质量被广泛应用于玻璃切割领域。 对于激光切割， 玻璃是被激光引入的张力分开的。 以 CO₂激光切 割为例， CO₂激光理论上可以被多种玻璃完全吸收。 CO₂激光切割有三 种原理。 第一种方法， 直接利用激光熔融玻璃， 使玻璃分开。 这时玻 璃承受的温度远大于玻璃的转变点 T_g。 第二种方法， 利用激光脉冲轻 微的加热玻璃的部分点状区域到稍微大于 T_g的温度， 去除掉这些区域 内的玻璃使玻璃断裂。 第三种方法， 玻璃被加热到稍低于 T_g的某一温 度， 然后迅速冷却。 一个由张力引起的裂缝将使得玻璃分开。 对比传统的刀轮切割， 第三种激光切割方法通过减少边缘缺陷能 够提高玻璃的机械强度。 除此之外， 激光切割不受切割形状限制， 没 有机械磨损， 不与被加工的物品接触使得激光切割几乎不产生玻璃碎 屑， 很适合在洁净室里使用。 发明内容Many fields of technology require high strength glass. The most typical way to increase the strength of the glass is to surface the glass, such as acid etching. Another method is to introduce permanent stresses into the glass, known as physical tempering (or hot tempering) and chemical tempering. Physical tempering introduces permanent stress by rapidly cooling the glass surface. Chemical tempering produces surface compressive stress by ion exchange. Both methods are well known and widely used in the industry. Substrate glass for electronic applications such as safety glass, automotive glass, white goods, hard drives, displays, etc. For touch screens, thin and reinforced cover glass is usually required to ensure both thinness and scratch resistance. Due to the thickness limitation, thin glass cannot produce a sufficiently high temperature gradient and cooling rate in the thickness direction, so it is difficult to be physically tempered. Thin glass, typically less than 2 mm thick, cannot be physically tempered. Therefore, thin glass having a thickness of less than 2 mm is usually selected from chemical tempering. Chemically tempered glass is known in the art and is described, for example, in the patents US 4,156,755 and DE 4,206,268 A1. The chemically tempered glass is machined such as edging, cutting, etc., which has a high defect rate or cannot be processed at all. This is because the higher internal stresses in the glass product during processing can lead to unpredictable cracking. However, in special processing processes, cutting tempered glass can bring significant economic benefits. In special cases, it is advantageous to cut the tempered thin glass because it can temper large pieces of flat glass and then cut it to increase the yield. The most common methods of glass cutting are, for example, mechanical cutter cutting, water jet or laser cutting. Laser cutting has the advantages of no chipping, difficulty in peeling and high boundary quality. The high quality of the boundary after laser cutting can eliminate the subsequent processing of the boundary, and the good surface quality can improve the scratch resistance of the glass, thereby eliminating the need for subsequent surface treatment. It is therefore necessary to obtain such high-strength glass that can be subjected to subsequent mechanical or laser cutting. The conventional glass cutting method uses mechanical force to cut the glass surface, and introduces an external force to separate the glass and complete the cutting. Using this method, microcracks remain on the edges of the glass, peeling, the glass surface is destroyed, and glass debris remains. Compared to traditional mechanical cutting, such as metal and diamond cutter wheel cutting, laser cutting is widely used in the field of glass cutting with its excellent cutting quality. For laser cutting, the glass is separated by the tension introduced by the laser. Taking CO₂ laser cutting as an example, the CO₂ laser can theoretically be completely absorbed by various glasses. There are three principles for CO₂ laser cutting. In the first method, the glass is directly melted by a laser to separate the glass. At this time, the temperature of the glass is much greater than the transition point T_{g of the} glass. The second method, pulsed laser heating of the glass a slight dot-like areas to a portion slightly larger than the_temperature, T_g, the glass removed in these regions of the glass breaking. The third method, the glass is heated to a temperature slightly below the T_g, and then rapidly cooled. A crack caused by tension will separate the glass. Compared to traditional cutter wheel cutting, the third laser cutting method can reduce edge defects. It is enough to increase the mechanical strength of the glass. In addition, laser cutting is not limited by the shape of the cut, there is no mechanical wear, and it does not come into contact with the processed object, so that the laser cutting hardly produces glass debris, which is suitable for use in a clean room. Summary of the invention

本发明涉及一种能够切割的化学钢化玻璃。 进一步的， 所述玻璃 是硅酸盐玻璃， 其包含铝硅酸盐玻璃， 硼硅酸盐玻璃等。 进一步所述 切割方法是用机械力或激光切割。 本发明提供了一种玻璃制品，它能够在化学钢化后进行激光切割。 进一步的， 所述玻璃制品可以是平板玻璃， 进一步的， 所述玻璃制品 可以是玻璃管。 玻璃片的厚度为 0.3-2.0毫米范围之间。 本发明也提供了一种钢化方法， 使用这种方法钢化的玻璃是可以 切割的。 进一步的， 这种玻璃是硅酸盐玻璃。 钢化后玻璃的表面应力小于 1200 MPa。 进一步的， 钢化后玻璃的 表面应力小于 900 MPa。 进一步的， 钢化后玻璃的表面应力小于 800 MPa。 进一步的， 钢化后玻璃的中心应力小于 600 MPa。 钢化后玻璃的中心应力小于 60 MPao 进一步的， 钢化后玻璃的 中心应力小于 40 MPa 。 进一步的， 钢化后玻璃的中心应力小于 20 MPao 进一步的， 钢化后玻璃的中心应力小于 15 MPa。 钢化后玻璃的离子交换层深度为小于 50μπι。进一步的， 钢化后玻 璃的离子交换层深度为小于 30μηι。 进一步的， 钢化后玻璃的离子交换 层深度为小于 20μπι。 进一步的， 钢化后玻璃的离子交换层深度为小于 15μηι。 钢化后玻璃的离子交换层深度和玻璃的厚度比值低于 0.08。 进一 步的， 钢化后玻璃的离子交换层深度和玻璃的厚度比值低于 0.05。 进 一步的， 钢化后玻璃的离子交换层深度和玻璃的厚度比值低于 0.03。 进一步的， 钢化后玻璃的离子交换层深度和玻璃的厚度比值低于 0.02。 钢化后玻璃的 （离子交换层深度 X表面压应力 ÷玻璃厚度） 的值应 该小于 30。 进一步的， 钢化后玻璃的 （离子交换层深度 X表面压应力 ÷ 玻璃厚度） 的值应该小于 20。 进一步的， 钢化后玻璃的 （离子交换层 深度 X表面压应力 +玻璃厚度） 的值应该小于 10。 进一步的， 钢化后玻 璃的 （离子交换层深度 X表面压应力 ÷玻璃厚度） 的值应该小于 5。 本发明还提供了一种化学钢化玻璃的切割方法。 进一步的， 这种 方法使用（ 0₂激光进行切割。 进一步的， CO₂激光束的功率是 50-1000 瓦。 进一步的， CO₂激光束的功率在 60-800瓦范围之内。 迸一步的， 0₂激光束的功率在 80-500瓦范围之内。 进一步的， CO₂激光束的功 率在 80-300瓦范围之内。 进一步的， 激光束的移动速度是 20-1500 毫 米 /秒。 进一步的， 激光束的移动速度是 40-1200 毫米 /秒之间。 进一步 的， 激光束的移动速度是 60-800 毫米 /秒之间。 进一步的， 激光束的移 动速度是 80-500 毫米 /秒之间。 其他的激光切割方法如 YAG:Nd激光器， 绿色激光器等， 都可用 于本发明化学强化玻璃的切割。 附图说明The present invention relates to a chemically toughened glass that can be cut. Further, the glass is a silicate glass comprising aluminosilicate glass, borosilicate glass or the like. Further, the cutting method is performed by mechanical force or laser cutting. The present invention provides a glass article which is capable of laser cutting after chemical tempering. Further, the glass article may be a flat glass. Further, the glass product may be a glass tube. The thickness of the glass sheet is between 0.3 and 2.0 mm. The invention also provides a method of tempering in which the tempered glass is cleavable. Further, the glass is a silicate glass. The surface stress of the tempered glass is less than 1200 MPa. Further, the surface stress of the tempered glass is less than 900 MPa. Further, the surface stress of the tempered glass is less than 800 MPa. Further, the center stress of the tempered glass is less than 600 MPa. After tempering, the center stress of the glass is less than 60 MPao. Further, the center stress of the tempered glass is less than 40 MPa. Further, the center stress of the tempered glass is less than 20 MPao. Further, the center stress of the tempered glass is less than 15 MPa. The depth of the ion exchange layer of the tempered glass is less than 50 μm. Further, the depth of the ion exchange layer of the tempered glass is less than 30 μm. Further, the ion exchange of the tempered glass The layer depth is less than 20 μm. Further, the depth of the ion exchange layer of the tempered glass is less than 15 μm. The ratio of the ion exchange layer depth to the glass thickness of the tempered glass is less than 0.08. Further, the ratio of the depth of the ion exchange layer to the thickness of the glass after the tempered glass is less than 0.05. Further, the ratio of the depth of the ion exchange layer to the thickness of the glass of the tempered glass is less than 0.03. Further, the ratio of the ion exchange layer depth to the glass thickness of the tempered glass is less than 0.02. The value of the tempered glass (ion exchange layer depth X surface compressive stress ÷ glass thickness) should be less than 30. Further, the value of the tempered glass (ion exchange layer depth X surface compressive stress ÷ glass thickness) should be less than 20. Further, the value of the tempered glass (ion exchange layer depth X surface compressive stress + glass thickness) should be less than 10. Further, the value of the tempered glass (ion exchange layer depth X surface compressive stress ÷ glass thickness) should be less than 5. The invention also provides a method of cutting chemically tempered glass. Further, this method uses (0₂ laser for cutting. Further, the power of the CO₂ laser beam is 50-1000 watts. Further, the power of the CO₂ laser beam is in the range of 60-800 watts. the power of the laser beam_02. further, the power CO₂ laser beam. further, the moving speed of the laser beam is 20-1500 mm / sec in the range of 80-300 watts in the range 80-500 watts. Further, the moving speed of the laser beam is between 40 and 1200 mm/sec. Further, the moving speed of the laser beam is between 60 and 800 mm/sec. Further, the moving speed of the laser beam is 80-500 mm/ Other laser cutting methods such as YAG: Nd laser, green laser, etc. can be used for the cutting of the chemically strengthened glass of the present invention.

图一， 表面压应力、 张应力、 应力层深度以及玻璃厚度的关系 (表 面压应力固定在 800 MPa)。 Figure 1. Relationship between surface compressive stress, tensile stress, stress layer depth, and glass thickness (surface compressive stress is fixed at 800 MPa).

图二， 照片显示激光切割的化学钢化玻璃的边缘。 图三， 照片显示普通刀轮切割的化学钢化玻璃的边缘。 发明的具体实施方式Figure 2. The photo shows the edge of a laser-cut chemically tempered glass. Figure 3. The photo shows the edge of a chemically tempered glass cut by a common cutter wheel. DETAILED DESCRIPTION OF THE INVENTION

化学钢化过程中， 盐浴中半径较大的碱金属离子通过离子交换渗 入到玻璃的网络结构中， 交换出玻璃中半径较小的碱金属离子， 从而 在玻璃表面生成一层数十微米深的压应力层。 玻璃强度在此过程中被 强化。 用于如智能电话、 平板电脑等触摸屏产品中的保护性的盖板玻 璃， 通常需要化学钢化以提高其强度和抗划伤能力。 化学钢化玻璃因其玻璃种类的不同， 化学钢化盐浴成分和交换时 间、 温度等的不同， 其压应力的范围是 200-1500 MPa, 离子交换层深 度范围是 10-150微米。 为了平衡表面的压应力， 张应力在玻璃的中部 积聚。 张应力的大小与玻璃的厚度、 表面压应力和离子交换层深度有 关。 化学钢化玻璃的张应力的范围从几个 MPa大到 100 MPa。 传统的玻璃切割方法很难在钢化玻璃表面产生划痕， 或者划痕的 深度不足以划开玻璃。 只要离子交换层深度大于一定限度， 即使在表 面产生了划痕， 由于离子交换层没被划透， 外部施加的张应力不能集 中在划痕边缘上， 这使得整块玻璃不能沿划痕断裂， 而发生无规则的 破裂。 激光切割通过加热玻璃表面能够很容易贯穿压应力层。 在先加热 后冷却的过程中， 玻璃表面压应力驰豫， 形成的张应力产生裂缝并向 下扩展到中心应力层。 这个裂缝持续的扩展并贯穿整个玻璃中心张应 力层。 如果下面压应力层的压应力不是特别的大， 激光切割释放的能 量可以足以分开另一面的压应力层。 上面所述的玻璃制品可以是平板玻璃。平板玻璃厚度范围为 0.1-10 mm, 优选范围为 0.1-5 mm， 更优范围为 0.3-3 mm， 最优范围为 0.3-2 mm₀ 所述的钢化玻璃的尺寸可以大于 50cm²， 也可以大于 100cm², 也 可以大于 1000cm², 也可以大于 2000cm²。 所述的钢化玻璃的尺寸还可 以小于 50cm²。 令人惊讶的是， 通过调整所切割的具有一定厚度的钢化玻璃的表 面应力、 交换层深度和中心张应力， 可以获得很高的玻璃切割良品率， 同时还能保持玻璃很高的断裂强度。 必须严格控制离子交换过程以获得相应的切割性能。 温度、 时间 和盐浴成分是最重要的参数。 化学钢化前进行的表面处理如酸蚀等能 够进一步提高强度。 影响玻璃切割性能的重要参数包括杨氏模量和硬度。 另外， 对于 激光切割热膨胀系数 CTE也很重要。 杨氏模量反映玻璃的刚度， 其优选范围为 70-100 MPa， 更优范围 为 70-90 MPa, 最优范围为 70-85 MPa= 玻璃的努氏硬度 （0.1/20， 100 克力， 20 秒） 的优选范围为During the chemical tempering process, the alkali metal ions with a large radius in the salt bath penetrate into the network structure of the glass by ion exchange, and exchange the alkali metal ions with a small radius in the glass to form a layer of tens of microns deep on the surface of the glass. Compressive stress layer. Glass strength is enhanced during this process. Protective cover glass for use in touch screen products such as smart phones, tablets, etc., typically requires chemical tempering to increase its strength and scratch resistance. Chemical tempered glass has different compressive stress range of 200-1500 MPa and ion exchange layer depth range of 10-150 micrometers due to different types of glass, chemical tempering salt bath composition, exchange time and temperature. In order to balance the compressive stress of the surface, the tensile stress accumulates in the middle of the glass. The magnitude of the tensile stress is related to the thickness of the glass, the surface compressive stress, and the depth of the ion exchange layer. The tensile stress of chemically tempered glass ranges from a few MPa to 100 MPa. Conventional glass cutting methods have difficulty scratching the surface of the tempered glass, or the depth of the scratch is not sufficient to cut the glass. As long as the depth of the ion exchange layer is greater than a certain limit, even if scratches are formed on the surface, since the ion exchange layer is not scratched, the externally applied tensile stress cannot be concentrated on the edge of the scratch, so that the entire glass cannot be broken along the scratch. And a random rupture occurs. Laser cutting can easily penetrate the compressive stress layer by heating the glass surface. During the first cooling and then cooling, the surface compressive stress of the glass is relaxed, and the resulting tensile stress creates cracks and extends downward to the central stress layer. This crack continues to expand and penetrates the entire glass center tensile stress layer. If the compressive stress of the underlying compressive stress layer is not particularly large, the energy released by the laser cutting may be sufficient to separate the compressive stress layer on the other side. The glass article described above may be a flat glass. Flat glass thickness in the range 0.1-10 mm, preferably in the range of 0.1-5 mm, more preferably in the range of 0.3-3 mm, the optimum range of 0.3-2 mm₀ The tempered glass may have a size greater than 50 cm² , may be greater than 100 cm² , may be greater than 1000 cm² , or may be greater than 2000 cm² . The tempered glass may also have a size of less than 50 cm² . Surprisingly, by adjusting the surface stress, exchange layer depth and central tensile stress of the tempered glass cut to a certain thickness, a high glass cutting yield can be obtained while maintaining a high breaking strength of the glass. The ion exchange process must be strictly controlled to achieve the corresponding cutting performance. Temperature, time and salt bath composition are the most important parameters. Surface treatment such as acid etching before chemical tempering can further increase the strength. Important parameters affecting glass cutting performance include Young's modulus and hardness. In addition, it is also important for laser cutting thermal expansion coefficient CTE. Young's modulus reflects the stiffness of the glass, preferably in the range of 70-100 MPa, more preferably in the range of 70-90 MPa, and the optimum range is 70-85 MPa = Knoop hardness of the glass (0.1/20, 100 gram force, The preferred range of 20 seconds) is

500-800Kg/mm², 更优范围为 550-750 Kg/mm², 最优范围为 550-700 Kg/mm²。500-800 Kg/mm² , more preferably 550-750 Kg/mm² , and the optimum range is 550-700 Kg/mm² .

CTE 是玻璃在先加热后冷却过程中产生张应力的最重要参数。 CTE 大的玻璃在切割过程中将产生较大的张应力， 使得玻璃更容易被 切开。 但是， 如果 CTE过大将会导致在切割和化学钢化过程中玻璃容 易因热冲击而产生不可控制的破裂。 为了满足这些要求， 玻璃 CTE的 优选范围为 5.0-11.0xlO-⁶/°C, 更优范围为 5.0-10.0xlO'⁶/°C， 最优范围 为 5.0-9.0xlO-⁶/°C。 玻璃制品化学钢化后的机械性能由玻璃的表面压应力 （CS) 、 中 心张应力 （CT) 和离子交换层深度 （DoL) 定义。 较高的表面应力可 以产生较高的断裂强度， 较高的中心引力则增加玻璃破裂的风险， 而 离子交换层深度则反映玻璃的抗划伤能力。 化学钢化可以增加玻璃的断裂强度， 也增加玻璃的表面硬度和抗 划伤能力， 因此用传统的玻璃加工方法和设备很难切割钢化玻璃。 通过获得有特定离子交换层深度、 表面应力和中心张应力的化学 钢化玻璃， 使得玻璃能够被切割。 中心张应力越低越有利于钢化玻璃 的切割。 中心张应力应该低于 60 MPa, 低于 40 MPa更好， 更好是低 于 20 MPa, 最好低于 15 MPa。 化学钢化玻璃的表面压应力应该低于 1200 MPa, 低于 900 MPa更好， 优选是低于 800 MPa， 最好是低于 600 MPao 离子交换层深度范围为 0-50微米， 优选范围为 0-30微米， 更优 范围为 0-20微米， 最优范围为 0-15微米。 因为中心张力由离子交换层 深度， 表面压应力和玻璃厚度共同决定； 另外， 化学钢化玻璃还必须 满足离子交换层深度和玻璃的厚度比值低于 0.08， 低于 0.05更好， 优 选是低于 0.03， 最好是低于 0.02。 此外， 能够激光切割的化学钢化玻璃必须满足厚度、 表面压应力 和离子交换层深度等的一系列条件：CTE is the most important parameter for the tensile stress generated during the cooling of glass after heating. Large CTE glass will produce large tensile stress during the cutting process, making the glass easier to cut. However, if the CTE is too large, the glass will be susceptible to uncontrollable cracking due to thermal shock during cutting and chemical tempering. To meet these requirements, a preferred CTE range for glass 5.0-11.0xlO-⁶ / ° C, more preferably in the range of 5.0-10.0xlO^'6 / ° C, the optimal range of 5.0-9.0xlO-⁶ / ° C. The mechanical properties of glass products after chemical tempering are defined by the surface compressive stress (CS), central tensile stress (CT) and ion exchange layer depth (DoL) of the glass. Higher surface stresses can produce higher fracture strength, higher center gravity increases the risk of glass breakage, and ion exchange layer depth reflects the glass's scratch resistance. Chemical tempering can increase the breaking strength of the glass and also increase the surface hardness and scratch resistance of the glass, so it is difficult to cut the tempered glass by conventional glass processing methods and equipment. By obtaining a chemically tempered glass with a specific ion exchange layer depth, surface stress and central tensile stress, the glass can be cut. The lower the central tensile stress, the better the cutting of tempered glass. The central tensile stress should be less than 60 MPa, more preferably less than 40 MPa, more preferably less than 20 MPa, and most preferably less than 15 MPa. The surface compressive stress of the chemically tempered glass should be less than 1200 MPa, more preferably less than 900 MPa, preferably less than 800 MPa, preferably less than 600 MPao. The depth of the ion exchange layer is in the range of 0-50 microns, preferably in the range of 0- 30 microns, more preferably 0-20 microns, with an optimum range of 0-15 microns. Because the central tension is determined by the ion exchange layer depth, the surface compressive stress and the glass thickness; in addition, the chemically tempered glass must also satisfy the ion exchange layer depth and the glass thickness ratio of less than 0.08, more preferably less than 0.05, and preferably less than 0.03. , preferably less than 0.02. In addition, laser-cut chemically tempered glass must meet a range of conditions such as thickness, surface compressive stress, and ion exchange layer depth:

(离子交换层深度 X表面压应力 ÷玻璃厚度） 的值应该小于 30， 小 于 20更好， 优选的是小于 10, 最好小于 5。 例如图一所示， 在表面压应力固定在 800 MPa时， 不同厚度的玻 璃的中心张应力随离子交换层深度的变化如图所示。 如果要求中心张 应力层等于 40 MPa,则离子交换层的深度应是： 0.3mm的玻璃约 15μηι， 0.5mm的玻璃约 25μπι， 0.7mm的玻璃约 35μιη， 1.0mm的玻璃约 50μπι。 对进行过化学钢化的玻璃进行 CO₂激光切割。 CO₂激光束的功率 在 50-1000瓦范围之内， 优化的 CO₂激光束的功率在 60-800瓦范围之 内， 更优的 CO₂激光束的功率在 80-500瓦范围之内， 最优的 CO₂激光 束的功率在 80-300瓦范围之内。并且，激光束的移动速度是 20-1500 毫 米 /秒之间， 优化的激光束的移动速度是 40-1200 毫米 /秒之间， 更优的 激光束的移动速度是 60-800 毫米 /秒之间，最优的激光束的移动速度是The value of (ion exchange layer depth X surface compressive stress ÷ glass thickness) should be less than 30, more preferably less than 20, preferably less than 10, and most preferably less than 5. For example, as shown in Figure 1, when the surface compressive stress is fixed at 800 MPa, the central tensile stress of different thicknesses of glass varies with the depth of the ion exchange layer as shown. If the central tensile stress layer is required to be equal to 40 MPa, the depth of the ion exchange layer should be: 0.3 mm of glass of about 15 μm, 0.5 mm of glass of about 25 μm, 0.7 mm of glass of about 35 μm, and 1.0 mm of glass of about 50 μm. The chemically tempered glass was subjected to CO₂ laser cutting. CO₂ laser beam power Within the range of 50-1000 watts, the power of the optimized CO₂ laser beam is in the range of 60-800 watts, and the power of the better CO₂ laser beam is in the range of 80-500 watts, the optimal CO₂ laser The power of the beam is in the range of 80-300 watts. Moreover, the moving speed of the laser beam is between 20 and 1500 mm/sec, the moving speed of the optimized laser beam is between 40 and 1200 mm/sec, and the moving speed of the better laser beam is 60-800 mm/sec. The optimal movement speed of the laser beam is

80-500 毫米 /秒之间。 钠铝硅酸盐玻璃中含有 Na+离子， 是典型的能够进行化学钢化的 玻璃。 这种玻璃的热膨胀系数在 4-15ppm之间。 Na⁺ o K+ 之间的离子 交换在 KNO₃盐浴中进行。 玻璃通常在温度为 390-460°C 的盐浴炉中 处理 1-8小时。这样处理的玻璃的离子交换层深度在 10-120微米之间。 较短的处理时间和较低的处理温度比较有利于激光切割。 在一个具体 实施例中， 盐浴的温度范围为 380〜440°C， 更好的为 380~420°C, 优选 的为 380〜400°C。 处理时间为 1~4小时， 更好的是 1〜3小时， 优选的 是 1~2小时。 锂铝硅酸盐玻璃是含有 Li₂0的铝硅酸盐玻璃。 因为含有 Li₂O意味 着此种玻璃可以用 NaNO₃盐浴处理，并且因为 Li⁺→Na+在盐浴中的扩散 速度很快，进而具有很快的离子交换速度。 NaN0₃处理的玻璃的表面压 应力通常低于 KNO₃处理的玻璃， 但其离子交换层深度可轻易地达到Between 80-500 mm / sec. Sodium aluminosilicate glass contains Na+ ions and is a typical glass that can be chemically tempered. This glass has a coefficient of thermal expansion between 4 and 15 ppm. The ion exchange between Na⁺ o K+ was carried out in a KNO₃ salt bath. The glass is usually treated in a salt bath furnace at a temperature of 390-460 ° C for 1-8 hours. The ion exchange layer of the glass thus treated has a depth of between 10 and 120 microns. Shorter processing times and lower processing temperatures are advantageous for laser cutting. In a specific embodiment, the temperature of the salt bath ranges from 380 to 440 ° C, more preferably from 380 to 420 ° C, and most preferably from 380 to 400 ° C. The treatment time is 1 to 4 hours, more preferably 1 to 3 hours, and preferably 1 to 2 hours. Lithium aluminosilicate glass is an aluminosilicate glass containing Li₂ 0. Since the inclusion of Li₂ O means that such a glass can be treated with a NaNO₃ salt bath, and because Li⁺ →Na+ diffuses rapidly in the salt bath, it has a fast ion exchange rate. The surface compressive stress of NaN0₃ treated glass is usually lower than that of KNO₃ treated glass, but the depth of ion exchange layer can be easily reached.

100微米。 如此深的离子交换层深度， 使得此种钢化玻璃无法切割。 但 是通过控制化学钢化条件可以实现玻璃的切割。用 NaNO₃进行钢化的时 间和温度分别为： 1-60分钟， 1-30分钟更好， 最好是 1-15分钟， 温度为 360-390°C, 在 360-380°C更好， 最好为 360-370°C。 另外， 如果用 KNO₃ 处理这种玻璃， 因为 Li+^K⁺扩散速度较低， 离子交换层深度很小， 即100 microns. Such a deep ion exchange layer depth makes such tempered glass impossible to cut. However, the cutting of the glass can be achieved by controlling the chemical tempering conditions. The time and temperature for tempering with NaNO₃ are: 1-60 minutes, preferably 1-30 minutes, preferably 1-15 minutes, temperature 360-390 ° C, better at 360-380 ° C, most Good for 360-370 ° C. In addition, if the glass is treated with KNO₃ , since the diffusion speed of Li + ^ K⁺ is low, the depth of the ion exchange layer is small, that is,

5-20微米， 这样处理的玻璃能够被激光切割。 硼硅酸盐玻璃是含有一定量 B₂O₃作为网络结构的硅酸盐玻璃。这 种玻璃往往拥有较低的热膨胀系数。 因为 B₂O₃的存在， 玻璃的网络结 构相比普通硅酸盐玻璃更加致密。 致密的结构导致碱金属离子交换进 入玻璃结构中的速度相对较慢， 离子交换层深度不深。 因此， 化学钢 化后， 这种玻璃可以被激光切割。 化学钢化的优化温度范围为5-20 microns, the glass thus treated can be laser cut. Borosilicate glass is a silicate glass containing a certain amount of B₂ O₃ as a network structure. This glass tends to have a lower coefficient of thermal expansion. Because of the presence of B₂ O₃ , the network structure of the glass is denser than ordinary silicate glass. Dense structure leads to the exchange of alkali metal ions The velocity into the glass structure is relatively slow and the depth of the ion exchange layer is not deep. Therefore, after chemical tempering, the glass can be laser cut. The optimized temperature range for chemical tempering is

390-500°C， 更优选范围为 400-490°C， 最优范围为 420-480°C， 而钢化 时间优化范围为 1-30小时，更优选范围为 1-20小时，最优选范围为 1-15 小时。 更进一步， 离子交换层深度应低于 15、 20、 30、 50微米， 而断裂 强度应比未钢化的玻璃提高至少 100%。 更进一步， 玻璃的成分中可以添加其他元素以增加对激光的吸收， 上述激光波长可以在紫外 UV， 可见光 VIS和红外 IR波段。 通常但不 必须加入稀土元素， 如铈。 相关玻璃的成分范围如下：390-500 ° C, more preferably in the range of 400-490 ° C, the optimum range is 420-480 ° C, and the tempering time is optimized in the range of 1-30 hours, more preferably in the range of 1-20 hours, the most preferred range is 1-15 hours. Furthermore, the depth of the ion exchange layer should be less than 15, 20, 30, 50 microns, and the fracture strength should be at least 100% higher than that of the untempered glass. Furthermore, other elements may be added to the composition of the glass to increase the absorption of the laser. The above laser wavelengths may be in the ultraviolet UV, visible VIS and infrared IR bands. Usually, but not necessarily, rare earth elements such as barium are added. The composition of the relevant glass ranges as follows:

钠铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物总重计， 各成分 的百分含量为 （wt%) ： The sodium aluminosilicate glass comprises the following components, and the percentage of each component is (wt%) based on the total weight of the glass composition:

Na₂O 2-17%,Na₂ O 2-17%,

K₂O 2-10%；K₂ O 2-10%;

Na₂O+K₂O 5-25%；Na₂ O+K₂ O 5-25%;

Α1₂Ο₃ 2-20%；Α1₂ Ο₃ 2-20%;

B₂O₃ 0-15%；B₂ O₃ 0-15%;

MgO 0-10%； MgO 0-10%;

ZnO 0-5%； ZnO 0-5%;

ZrO₂ 0-5%；ZrO₂ 0-5%;

CaO 0-5%； 优选的成分含量为 （wt%) ： CaO 0-5%; the preferred ingredient content is (wt%):

SiO₂ 58-65%；SiO₂ 58-65%;

Na₂O 10-15%, K₂O 2-6%；Na₂ O 10-15%, K₂ O 2-6%;

Na₂O+K₂O 13-20%；Na₂ O+K₂ O 13-20%;

Al₂O₃ 12-18%；Al₂ O₃ 12-18%;

B₂O₃ 0-5%；B₂ O₃ 0-5%;

MgO 0-6%； MgO 0-6%;

ZnO 0-2%； ZnO 0-2%;

ZrO₂ 0-4%；ZrO₂ 0-4%;

CaO 0-5%； 可以加入一般量的如下精炼剂， 但没有限制。 例如： 氧化砷、 氧 化锑、 氧化锡、 氯化物、 硫化物等。 锂铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物总重计， 各成分 的百分含量为 （wt%) ： CaO 0-5%; The following amounts of the following refining agents can be added, but are not limited. For example: arsenic oxide, antimony oxide, tin oxide, chloride, sulfide, and the like. Lithium aluminosilicate glass, comprising the following components, based on the total weight of the glass composition, the percentage of each component is (wt%):

SiO₂ 55-70%；SiO₂ 55-70%;

Na₂O 0-10%；Na₂ O 0-10%;

Ll₂W l - L "/o ;Ll₂ W l - L "/o ;

K₂O 0-10%；K₂ O 0-10%;

Li₂O+Na₂O 2-20%；Li₂ O+Na₂ O 2-20%;

AI2O3 2-25%； AI2O3 2-25%;

B₂O₃ 0-15%；B₂ O₃ 0-15%;

P₂O₅ 0-5%;P₂ O₅ 0-5%;

ZnO 0-5%； ZnO 0-5%;

ZrO₂ 0-5%；ZrO₂ 0-5%;

优选的成分范围为： The preferred range of ingredients is:

SiO₂60-70%；SiO₂ 60-70%;

Na₂O 0-10%；Na₂ O 0-10%;

Li₂O 3-10%_;Li₂ O 3-10%_;

K₂O 0-2%；K₂ O 0-2%;

Li₂O+Na₂O 4-16%； Al₂O₃ 10-20%;Li₂ O+Na₂ O 4-16%; Al₂ O₃ 10-20%;

B₂O₃ 0-6%；B₂ O₃ 0-6%;

P₂O₅ 0-3%;P₂ O₅ 0-3%;

ZnO 0-2%； ZnO 0-2%;

ZrO₂ 0-5%； 可以加入一般量的如下精炼剂， 但没有限制。 例如： 氧化砷， 氧 化锑， 氧化锡， 氯化物， 硫化物等。 硼硅酸盐玻璃， 包括如下组分， 以玻璃组合物总重计， 各成分的 百分含量为 （wt%) ：ZrO₂ 0-5%; The following amount of the following refining agent can be added, but there is no limitation. For example: arsenic oxide, antimony oxide, tin oxide, chloride, sulfide, etc. The borosilicate glass comprises the following components, and the percentage of each component is (wt%) based on the total weight of the glass composition:

SiO₂ 55-85%；SiO₂ 55-85%;

Na₂O 0-20%；Na₂ O 0-20%;

K₂O 0-15%；K₂ O 0-15%;

Β₂Ο₃ 0.5-20%；Β₂ Ο₃ 0.5-20%;

Α1₂Ο₃ 0-10%；Α1₂ Ο₃ 0-10%;

TiO₂ 0〜8%；TiO₂ 0~8%;

ZnO 0~10%。 ZnO 0~10%.

优选的成分范围为： The preferred range of ingredients is:

SiO₂ 60-83%；SiO₂ 60-83%;

Na₂O 0-10%；Na₂ O 0-10%;

K₂0 0-10%；K₂ 0 0-10%;

Β₂Ο₃ 2-16%；Β₂ Ο₃ 2-16%;

Α1₂Ο₃ 0-8%；Α1₂ Ο₃ 0-8%;

TiO₂ 0〜6%；TiO₂ 0~6%;

ZnO 0~8%。 可以加入一般量的如下精炼剂， 但没有限制。 例如氧化砷， 氧化 锑， 氧化锡， 氯化物， 硫化物。 钠钙玻璃， 包括如下组分， 以玻璃组合物总重计， 各成分的百分 含量为 （wt%) ：ZnO 0~8%. A general amount of the following refining agent can be added, but there is no limitation. For example, arsenic oxide, antimony oxide, tin oxide, chloride, sulfide. Soda lime glass, comprising the following components, the percentage of each component is (wt%) based on the total weight of the glass composition:

SiO₂ 60-80%；SiO₂ 60-80%;

Na₂O 1-20%；Na₂ O 1-20%;

K₂O 0-5%；K₂ O 0-5%;

CaO 0.5-20%； CaO 0.5-20%;

MgO 0-15%； MgO 0-15%;

Al₂O₃ 0〜10%。Al₂ O₃ 0 to 10%.

优选的成分范围为： The preferred range of ingredients is:

SiO₂ 60-80%；SiO₂ 60-80%;

Na₂O 8-16%；Na₂ O 8-16%;

K₂O 0-4%；K₂ O 0-4%;

CaO 4-15%； CaO 4-15%;

MgO 2-6%； MgO 2-6%;

AI2O3 0〜5%。 可以加入一般量的如下精炼剂， 但没有限制。 例如氧化砷， 氧化 锑， 氧化锡， 氯化物， 硫化物。 以上玻璃组分， 均还可包括 CeO₂ 0-l %。 在以下的实施例中， 所有的组分量以重量百分数计算， 除非另外 说明。 要想达到良好的切割效果， 实验中需要控制玻璃钢化后的表面压 应力大小， 中心张应力， 以及应力层深度等参数。 对于采用 KNO₃钢化的玻璃， 其应力大小和深度可采用 FSM6000 进行测量。 对于锂铝硅玻璃， 特别是在 NaN0₃钢化的情况下， FSM6000无法 测量其表面压应力以及应力层深度， 可采用偏光显微镜， 利用应力双 折射原理进行测量。 实施例一AI2O3 0~5%. A general amount of the following refining agent can be added, but there is no limitation. For example, arsenic oxide, antimony oxide, tin oxide, chloride, sulfide. The above glass components may each include CeO₂ 0-l%. In the following examples, all component amounts are calculated by weight percent unless otherwise stated. In order to achieve a good cutting effect, it is necessary to control the surface compressive stress, the central tensile stress, and the depth of the stress layer after the glass tempering. For glass tempered with KNO₃ , the stress magnitude and depth can be measured with the FSM6000. For lithium aluminosilicate glass, especially in the case of NaN0₃ tempering, the FSM6000 cannot measure the surface compressive stress and the depth of the stress layer. It can be measured by the principle of stress birefringence using a polarizing microscope. Embodiment 1

玻璃的主要成分为 SiO₂ 63%, Α1₂Ο₃ 16%, Na₂O 13%, K₂O 3.55%, MgO 3.95%, 其余为 SnO₂。 首先， 按照表 1 中实施例给出的成分将相应的原料进行配料,在 1600-1640°C 下将原料通过铂金坩埚熔化并保温 5〜15 小时， 然后在 1640-1660°C下澄清， 随后降温到 1600°C左右。 将铂金坩埚从高温炉 中取出， 将玻璃熔体倾倒于冷的不锈钢模子中， 制得尺寸大致为 50x50x40mm 的块体玻璃。 随后将玻璃随着该不锈钢模子放入 600°C 左右的退火炉中退火 2〜8小时。 将退火完毕的玻璃进行抛光， 然后切割， 磨边， 再精细刨光成所 需的样品尺寸， 即 40x40x0.7mm。 拋光后的表面粗糙度在 1纳米以下。 热膨胀系数和转化点通过如下方法测定。 即， 通过膨胀计进行测 量。 样品加工成直径为 5mm的圆柱体。 记录 20到 300°C的长度变化 量， 从而计算线膨胀系数。 在玻璃转化点附近， 玻璃的线膨胀系数发 生明显的突变， 通过外推从而获得玻璃的转变点。 通过阿基米德原理测定玻璃的密度。 将玻璃样品放入盛有水的容 器中并精确测量容器中水的体积变化， 从而来获得样品的体积。 利用 可精确测量的样品重量除以体积， 便得到了密度的数据。 将抛光的样品进行化学钢化。 钢化通过实验室级小型盐浴炉进行 (直径 250x250mm, 深度 400mm) 。 样品放置于专门的防腐蚀不锈钢 样品架上。 在 KNO₃盐浴中经过 390。C， 2小时的离子交换处理后， 经 测量， 表面应力 820 Mpa， 中心应力 20 Mpa, 及应力层深度 20μηι。 采用 CO₂激光器进行切割，激光器功率为 150W,激光束移动速度 为 100mm/秒， 玻璃可以被顺利地切割开。 边缘质量良好。 实施例 二The main components of the glass are SiO₂ 63%, Α1₂ Ο₃ 16%, Na₂ O 13%, K₂ O 3.55%, MgO 3.95%, and the balance is SnO₂ . First, according to the ingredients given in the examples in Table 1, the corresponding raw materials are compounded, and the raw materials are melted through platinum crucible at 1600-1640 ° C for 5 to 15 hours, and then clarified at 1640-1660 ° C, followed by Cool down to around 1600 °C. The platinum crucible was taken out from the high temperature furnace, and the glass melt was poured into a cold stainless steel mold to obtain a bulk glass having a size of approximately 50 x 50 x 40 mm. The glass is then annealed in an annealing furnace at about 600 ° C for 2 to 8 hours. The annealed glass is polished, then cut, edging, and finely diced to the desired sample size, i.e., 40 x 40 x 0.7 mm. The surface roughness after polishing is below 1 nm. The coefficient of thermal expansion and the conversion point were determined by the following methods. That is, the measurement is performed by a dilatometer. The sample was processed into a cylinder having a diameter of 5 mm. The amount of change in length from 20 to 300 ° C was recorded to calculate the coefficient of linear expansion. Near the glass transition point, the linear expansion coefficient of the glass undergoes a significant abrupt change, and the transition point of the glass is obtained by extrapolation. The density of the glass was determined by the Archimedes principle. The volume of the sample is obtained by placing the glass sample in a container filled with water and accurately measuring the volume change of the water in the container. Density data is obtained by dividing the weight of the sample that can be accurately measured by the volume. The polished sample was chemically tempered. The tempering is carried out in a laboratory-scale small salt bath furnace (diameter 250x250mm, depth 400mm). The sample is placed on a special corrosion-resistant stainless steel sample holder. Pass 390 in a KNO₃ salt bath. C, after 2 hours of ion exchange treatment, Measurement, surface stress 820 Mpa, center stress 20 Mpa, and stress layer depth 20 μηι. Cutting with a CO₂ laser with a laser power of 150 W and a laser beam moving speed of 100 mm/sec, the glass can be cut smoothly. The edge quality is good. Embodiment 2

采用同实施例一同样的方法制备玻璃样品。 玻璃样品厚度 0.7mm。化学钢化在 440°C 的纯 KNO₃盐浴中进行 6个小时。表面应力 700Mpa，中心应力 45Mpa，及应力层深度 40μιη。 采用 C0₂激光器进行切割， 经调整激光束功率以及移动速度， 玻 璃无法被顺利切割开。 其原因为应力层深度以及中心张应力过大。 实施例 五A glass sample was prepared in the same manner as in Example 1. The glass sample has a thickness of 0.7 mm. The chemical tempering was carried out in a pure KNO₃ salt bath at 440 ° C for 6 hours. The surface stress is 700 MPa, the center stress is 45 MPa, and the stress layer depth is 40 μm. Cutting with a C0₂ laser, the laser beam power and moving speed are adjusted, and the glass cannot be cut smoothly. The reason is that the stress layer depth and the central tensile stress are too large. Embodiment 5

采用同实施例一同样的方法制备玻璃样品。 玻璃样品厚度 1.0 mm。 化学钢化在 390°C 的纯 KNO₃盐浴中进 行 8个小时。 表面应力 1000 Mpa， 中心应力 10 Mpa， 及应力层深度 10μιη。 采用 CO₂激光器进行切割，激光器功率为 100W,激光束移动速度 为 180mm/秒， 玻璃可以被顺利地切割开。 边缘质量良好。 玻璃边缘质 量可见图二所示。 同时， 采用常规的带刀轮的玻璃切割台也可将此玻璃切割， 如图 三所示。 但边缘产生大量的微小缺口， 无法进行规模化生产。 实施例 七A glass sample was prepared in the same manner as in Example 1. The glass sample has a thickness of 1.0 mm. Chemical tempering was carried out in a pure KNO₃ salt bath at 390 ° C for 8 hours. The surface stress is 1000 Mpa, the center stress is 10 Mpa, and the stress layer depth is 10 μm. Cutting with a CO₂ laser with a laser power of 100 W and a laser beam moving speed of 180 mm/sec, the glass can be cut smoothly. The edge quality is good. The quality of the glass edge can be seen in Figure 2. At the same time, the glass can be cut by a conventional glass cutting table with a cutter wheel, as shown in Figure 3. However, a large number of small gaps are generated at the edge, and large-scale production cannot be performed. Example 7

采用同实施例一同样的方法制备玻璃样品。 玻璃样品厚度 0.5 mm。 化学钢化在 380°C 的纯 NaNO₃盐浴中进 行 10 分钟。 表面应力 650 Mpa， 中心应力 10 Mpa, 及应力层深度 14μιη。 采用 C0₂激光器进行切割，激光器功率为 100W,激光束移动速度 为 200mm/秒， 玻璃可以被顺利地切割开。 边缘质量良好。 实施例 十A glass sample was prepared in the same manner as in Example 1. The glass sample has a thickness of 0.5 mm. The chemical tempering was carried out in a pure NaNO₃ salt bath at 380 ° C for 10 minutes. The surface stress is 650 Mpa, the center stress is 10 Mpa, and the stress layer depth is 14 μm. Cutting with a C0₂ laser, the laser power is 100W, the laser beam moving speed is 200mm/sec, and the glass can be cut smoothly. The edge quality is good. Example ten

采用同实施例一同样的方法制备玻璃样品。 样品厚度 0.3mm。化学钢化在 420°C 的纯 KNO₃盐浴中进行 3个 小时。 表面应力 500 Mpa， 中心应力 14 Mpa， 及应力层深度 8μιη。 采用 CO₂激光器进行切割，激光器功率为 100W，激光束移动速度 为 200mm/秒， 玻璃可以被顺利地切割开。 边缘质量良好。 实施例 十一A glass sample was prepared in the same manner as in Example 1. The sample thickness is 0.3 mm. The chemical tempering was carried out in a pure KNO₃ salt bath at 420 ° C for 3 hours. The surface stress is 500 Mpa, the center stress is 14 Mpa, and the stress layer depth is 8 μιη. Cutting with a CO₂ laser with a laser power of 100 W and a laser beam moving speed of 200 mm/sec, the glass can be cut smoothly. The edge quality is good. Embodiment 11

釆用同实施例一同样的方法制备玻璃样品。 样品厚度 1.0mm。化学钢化在 460°C 的纯 KNO₃盐浴中进行 8个 小时。 表面应力 300 Mpa， 中心应力 5 Mpa， 及应力层深度 16μπι。 采用 CO₂激光器进行切割，激光器功率为 120W, 激光束移动速度 为 150mm/秒， 玻璃可以被顺利地切割开。 边缘质量良好。 应用领域包括显示， 消费电子和光学器件的窗口玻璃。 切割的方法可以是任意的切割方法， 但最好是激光切割， 如 CO₂， Nd-YAG激光或者飞秒激光。 也可用水刀和机械刀轮切割。 实施例A glass sample was prepared in the same manner as in Example 1. The sample thickness was 1.0 mm. Chemical tempering was carried out in a pure KNO₃ salt bath at 460 ° C for 8 hours. The surface stress is 300 Mpa, the center stress is 5 Mpa, and the stress layer depth is 16 μm. Cutting with a CO₂ laser with a laser power of 120 W and a laser beam moving speed of 150 mm/sec, the glass can be cut smoothly. The edge quality is good. Applications include display glass for consumer electronics and optics. The cutting method may be any cutting method, but it is preferably laser cutting such as CO₂ , Nd-YAG laser or femtosecond laser. It can also be cut with a water knife and a mechanical cutter wheel. Example

Claims

权 利 要 求 Rights request

1. 一种能进行后续切割的化学钢化玻璃， 特征在于玻璃的杨氏模 量为 70-100 MPa, 玻璃的努氏硬度 （0.1/20， 100 克力， 20 秒） 为1. A chemically tempered glass capable of subsequent cutting, characterized in that the Young's modulus of the glass is 70-100 MPa, and the Knoop hardness of the glass (0.1/20, 100 gram force, 20 seconds) is

500-800Kg/mm², 及玻璃的 CTE为 5.0-11.0 x l(T⁶/。C。The CTE of 500-800 Kg/mm² and glass is 5.0-11.0 xl (T⁶ /.C.

2. 如权利要求 1所述的能进行后续切割的化学钢化玻璃， 特征在 于杨氏模量为 70-90 MPa。2. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized by a Young's modulus of 70 to 90 MPa.

3. 如权利要求 1的能进行后续切割的化学钢化玻璃， 特征在于杨 氏模量为 70-85 MPao3. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized in that the Young's modulus is 70-85 MPao

4. 如权利要求 1的能进行后续切割的化学钢化玻璃， 特征在于玻 璃的努氏硬度为 550-750 Kg/mm²4. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized in that the glass has a Knoop hardness of 550-750 Kg/mm²

5. 如权利要求 1的能进行后续切割的化学钢化玻璃， 特征在于玻 璃的努氏硬度为 550-700 Kg/mm²。5. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized in that the glass has a Knoop hardness of 550 to 700 Kg/mm² .

6. 如权利要求 1的能进行后续切割的化学钢化玻璃， 特征在于玻 璃 CTE为 5.0-10.0 xlO-⁶/°C o6. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized in that the glass CTE is 5.0-10.0 x^{10 - 6} / ° C o

7. 如权利要求 1的能进行后续切割的化学钢化玻璃， 特征在于玻 璃 CTE为 6.0-9.5 x lO-⁶/°Co7. The chemically toughened glass capable of subsequent cutting according to claim 1, characterized in that the glass CTE is 6.0-9.5 x lO-⁶ / °Co

8. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 所述 的钢化玻璃是如下玻璃之一： A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, wherein said tempered glass is one of the following:

1 )所述玻璃是钠铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物总 重计， 各成分的百分含量为 （wt%) ： 1) The glass is a sodium aluminosilicate glass comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

SiO₂ 55-70%； Na₂0 2-17%； K₂O 2-10%； Na₂O+K₂O 5-25%； Α1₂Ο₃ 2-20%； B₂O₃ 0-15%； MgO 0-10%； ZnO 0-5%； ZrO₂ 0-5%； CaO 0-5%；SiO₂ 55-70%; Na₂ 0 2-17%; K₂ O 2-10%; Na₂ O+K₂ O 5-25%; Α1₂ Ο₃ 2-20%; B₂ O₃ 0-15%; MgO 0-10%; ZnO 0-5%; ZrO₂ 0-5%; CaO 0-5%;

2 ) 所述玻璃是锂铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物 总重计， 各成分的百分含量为 （wt%) ：2) The glass is a lithium aluminosilicate glass comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

SiO₂ 55-70%； Na₂O 0-10%； Li₂O 1-15%； K₂O 0-10%； Li₂O+Na₂O 2-20%； Α1₂Ο₃ 2-25%； Β₂Ο₃ 0-15%； Ρ₂Ο₅ 0-5%;； ΖηΟ 0-5%； ZrO₂ 0-5%；SiO₂ 55-70%; Na₂ O 0-10%; Li₂ O 1-15%; K₂ O 0-10%; Li₂ O+Na₂ O 2-20%; Α1₂ Ο₃ 2-25 %; Β₂ Ο₃ 0-15%; Ρ₂ Ο₅ 0-5%;; ΖηΟ 0-5%; ZrO₂ 0-5%;

3 )所述玻璃是硼硅酸盐玻璃， 包括如下组分， 以玻璃组合物总重 计， 各成分的百分含量为 （wt%) ：3) The glass is a borosilicate glass comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

SiO₂ 55-85%； Na₂O 0-20%； K₂O 0-15%； Β₂Ο₃ 0.5-20%； Α1₂Ο₃ 0-10%； TiO₂ 0〜8%; ΖηΟ 0〜10%; 或SiO₂ 55-85%; Na₂ O 0-20%; K₂ O 0-15%; Β₂ Ο₃ 0.5-20%; Α1₂ Ο₃ 0-10%; TiO₂ 0~8%; ΖηΟ 0 ~10%; or

4) 所述玻璃是钠钙玻璃， 包括以下组分， 以玻璃组合物总重计， 各成分的百分含量为 （wt%) ： 4) The glass is soda-lime glass, comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

Si0₂ 60-80%； Na₂0 1-20%； K₂O 0-5%； CaO 0.5-20%； MgO 0-15%； AI O3 0~10%。Si0₂ 60-80%; Na₂ 0 1-20%; K₂ O 0-5%; CaO 0.5-20%; MgO 0-15%; AI O3 0~10%.

9. 如权利要求 8的能进行后续切割的化学钢化玻璃， 所述的钢化 玻璃具有以下优选成分：9. A chemically tempered glass capable of subsequent cutting according to claim 8, said tempered glass having the following preferred components:

1 ) 该玻璃是钠铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物总重 计， 各成分的百分含量为 （wt%) ： 1) The glass is a sodium aluminosilicate glass comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

SiO₂ 58-65%； Na₂O 10-15%； K₂O 2-6%； Na₂O+K₂O 13-20%； Α1₂Ο₃ 12-18%； B₂O₃ 0-5%； MgO 0-6%； ZnO 0-2%； ZrO₂ 0-4%； CaO 0-5%；SiO₂ 58-65%; Na₂ O 10-15%; K₂ O 2-6%; Na₂ O+K₂ O 13-20%; Α1₂ Ο₃ 12-18%; B₂ O₃ 0- 5%; MgO 0-6%; ZnO 0-2%; ZrO₂ 0-4%; CaO 0-5%;

2 ) 该玻璃是锂铝硅酸盐玻璃， 包括如下组分， 以玻璃组合物总 重计， 各成分的百分含量为 （wt%) ：2) The glass is a lithium aluminosilicate glass comprising the following components, the percentage of each component being (wt%) based on the total weight of the glass composition:

SiO₂60-70%； Na₂O 0-10%； Li₂O 3-10%； K₂O 0-2%； Li₂O+Na₂O 4-16%； Α1₂Ο₃ 10-20%； Β₂Ο₃ 0-6%； Ρ₂Ο₅ 0-3%； ΖηΟ 0-2%； ZrO₂ 0-5%； 3 )该玻璃是硼硅酸盐玻璃，包括如下组分， 以玻璃组合物总重计， 各成分的百分含量为 （wt%) ：SiO₂ 60-70%; Na₂ O 0-10%; Li₂ O 3-10%; K₂ O 0-2%; Li₂ O+Na₂ O 4-16%; Α1₂ Ο₃ 10-20 %; Β₂ Ο₃ 0-6%; Ρ₂ Ο₅ 0-3%; ΖηΟ 0-2%; ZrO₂ 0-5%; 3) the glass is borosilicate glass, including the following components, The total weight of the glass composition, the percentage of each component is (wt%):

SiO₂ 60-83%； Na₂0 0-10%； K₂O 0-10%； Β₂Ο₃ 2-16%； Α1₂Ο₃ 0-8%； TiO₂ 0〜6%; ZnO 0-8%； 或SiO₂ 60-83%; Na₂ 0 0-10%; K₂ O 0-10%; Β₂ Ο₃ 2-16%; Α1₂ Ο₃ 0-8%; TiO₂ 0~6%; ZnO 0 -8%; or

4) 该玻璃是钠钙玻璃， 包括以下组分， 以玻璃组合物总重计， 各 成分的百分含量为 （wt%) ： SiO₂ 60-80%； Na₂0 8-16%； K₂O 0-4%； CaO 4-15%； MgO 2-6%； Al₂O₃ 0~5%。4) The glass is soda-lime glass, including the following components, the percentage of each component is (wt%) based on the total weight of the glass composition: SiO₂ 60-80%; Na₂ 0 8-16%; K₂ O 0-4%; CaO 4-15%; MgO 2-6%; Al₂ O₃ 0-5%.

10. 如权利要求 8或 9的能进行后续切割的化学钢化玻璃， 还可 包括 0-1 wt%的 CeO₂。10. The chemically toughened glass capable of subsequent cutting according to claim 8 or 9, which may further comprise 0-1 wt% of CeO₂ .

11. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于表面压应力小于 1200MPa。 11. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the surface compressive stress is less than 1200 MPa.

12. 如权利要求 11的能进行后续切割的化学钢化玻璃， 特征在于 表面压应力小于 900MPa。 12. The chemically toughened glass capable of subsequent cutting according to claim 11, characterized in that the surface compressive stress is less than 900 MPa.

13. 如权利要求 12的能进行后续切割的化学钢化玻璃， 特征在于 表面压应力小于 800MPa。 A chemically toughened glass capable of subsequent cutting according to claim 12, characterized in that the surface compressive stress is less than 800 MPa.

14. 如权利要求 13的能进行后续切割的化学钢化玻璃， 特征在于 表面压应力小于 600MPa。 14. A chemically toughened glass capable of subsequent cutting according to claim 13, characterized in that the surface compressive stress is less than 600 MPa.

15. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于中心张应力小于 60MPa。 15. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the central tensile stress is less than 60 MPa.

16. 如权利要求 15的能进行后续切割的化学钢化玻璃， 特征在于 中心张应力小于 40MPa。 16. A chemically toughened glass capable of subsequent cutting as claimed in claim 15 wherein the central tensile stress is less than 40 MPa.

17. 如权利要求 16的能进行后续切割的化学钢化玻璃， 特征在于 中心张应力小于 20MPa。 17. A chemically tempered glass capable of subsequent cutting according to claim 16, characterized in that the central tensile stress is less than 20 MPa.

18. 如权利要求 17的能进行后续切割的化学钢化玻璃， 特征在于 中心张应力小于 15MPa。18. A chemically toughened glass capable of subsequent cutting according to claim 17, characterized in that the central tensile stress is less than 15 MPa.

19. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于离子交换层深度小于 50μπι。19. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the ion exchange layer has a depth of less than 50 [mu]m.

20. 如前权利要求 19的能进行后续切割的化学钢化玻璃， 特征在 于离子交换层深度小于 30μπι。20. A chemically tempered glass capable of subsequent cutting according to claim 19, characterized in that the ion exchange layer has a depth of less than 30 μm.

21. 如权利要求 20的能进行后续切割的化学钢化玻璃， 特征在于 离子交换层深度小于 20μπι。A chemically tempered glass capable of subsequent cutting according to claim 20, wherein the ion exchange layer has a depth of less than 20 μm.

22. 如权利要求 21的能进行后续切割的化学钢化玻璃， 特征在于 离子交换层深度小于 15μιη。22. A chemically tempered glass capable of subsequent cutting according to claim 21, characterized in that the ion exchange layer has a depth of less than 15 μm.

23. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于离子交换层深度和玻璃的厚度比值低于 0.08。23. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the ion exchange layer depth and the glass thickness ratio are below 0.08.

24. 如权利要求 23的能进行后续切割的化学钢化玻璃， 特征在于 离子交换层深度和玻璃的厚度比值低于 0.05。24. The chemically toughened glass capable of subsequent cutting according to claim 23, characterized in that the ratio of the depth of the ion exchange layer to the thickness of the glass is less than 0.05.

25. 如权利要求 24的能进行后续切割的化学钢化玻璃， 特征在于 离子交换层深度和玻璃的厚度比值低于 0.03。25. The chemically toughened glass capable of subsequent cutting according to claim 24, characterized in that the ion exchange layer depth and the glass thickness ratio are less than 0.03.

26. 如权利要求 25的能进行后续切割的化学钢化玻璃， 特征在于 离子交换层深度和玻璃的厚度比值低于 0.02。26. The chemically toughened glass capable of subsequent cutting according to claim 25, characterized in that the ratio of the depth of the ion exchange layer to the thickness of the glass is less than 0.02.

27. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于 （离子交换层深度 X表面压应力 ÷玻璃厚度） 的值小于 30。27. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the value of (ion exchange layer depth X surface compressive stress ÷ glass thickness) is less than 30.

28. 如权利要求 27的能进行后续切割的化学钢化玻璃， 特征在于 (离子交换层深度 X表面压应力 ÷玻璃厚度） 的值小于 20。28. The chemically toughened glass capable of subsequent cutting according to claim 27, characterized in that the value of (ion exchange layer depth X surface compressive stress ÷ glass thickness) is less than 20.

29. 如权利要求 28的能进行后续切割的化学钢化玻璃， 特征在于 (离子交换层深度 X表面压应力 ÷玻璃厚度） 的值小于 10。29. The chemically toughened glass capable of subsequent cutting according to claim 28, characterized in that (the ion exchange layer depth X surface compressive stress ÷ glass thickness) has a value of less than 10.

30. 如权利要求 29的能进行后续切割的化学钢化玻璃， 特征在于 (离子交换层深度 X表面压应力 ÷玻璃厚度） 的值小于 5。30. A chemically tempered glass capable of subsequent cutting according to claim 29, characterized in that (the ion exchange layer depth X surface compressive stress ÷ glass thickness) has a value of less than 5.

31. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于它能够在化学钢化后进行激光切割。31. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that it is capable of laser cutting after chemical tempering.

32. 如权利要求 31所述的能进行后续切割的化学钢化玻璃， 特征 在于所述的激光切割为 < 0₂激光器、 YAG:Nd激光器、 绿色激光器切 割。32. The chemically toughened glass capable of subsequent cutting according to claim 31, characterized in that the laser cutting is a < 0₂ laser, a YAG: Nd laser, a green laser cutting.

33. 如权利要求 32的能进行后续切割的化学钢化玻璃， 特征在于 CO₂激光束的功率是 50-1000瓦。33. A chemically tempered glass capable of subsequent cutting according to claim 32, characterized in that the power of the CO₂ laser beam is 50-1000 watts.

34. 如权利要求 32的能进行后续切割的化学钢化玻璃， 特征在于 激光束的移动速度是 20-1500 毫米 /秒。A chemically tempered glass capable of subsequent cutting according to claim 32, wherein the moving speed of the laser beam is 20 to 1500 mm / sec.

35. 如前述任一权利要求的能进行后续切割的化学钢化玻璃， 特 征在于玻璃片的厚度为 0.3-2.0毫米。35. A chemically toughened glass capable of subsequent cutting according to any of the preceding claims, characterized in that the thickness of the glass sheet is from 0.3 to 2.0 mm.

36. 一种能进行后续切割的化学钢化玻璃制品， 特征在于玻璃制 品的杨氏模量为 70-100 MPa， 玻璃制品的努氏硬度（0.1/20， 100克力， 20秒） 为 500-800Kg/mm²， 及玻璃制品的 CTE为 5.0-11.0 xlO'⁶/°C。36. A chemically tempered glass product capable of subsequent cutting, characterized in that the Young's modulus of the glass article is 70-100 MPa, and the Knoop hardness (0.1/20, 100 gram force, 20 seconds) of the glass article is 500- The CTE of 800 Kg/mm² and glass articles is 5.0-11.0 xlO'⁶ /°C.

37. 如权利要求 36所述的钢化玻璃制品， 特征在于所述玻璃制品 是平板玻璃或是玻璃管。37. A tempered glass article according to claim 36, characterized in that the glass article is a flat glass or a glass tube.