Humans have used glass for thousands of years. Due to its excellent properties such as high light transmittance, high surface cleanliness, high hardness, and corrosion resistance, glass is widely used in many fields, including industrial substrates, display panels, consumer glass, and display covers for the electronics industry. However, after glass products are cooled and formed, they require processing steps such as drilling and grinding to meet diverse application needs. The limitations of traditional processing methods have consistently hindered quality upgrades.
Traditional glass drilling often uses contact processes such as mechanical cutting tools, grinding wheels, or chemical etching, which easily create micro-cracks on the glass surface, resulting in poor processing quality and potential environmental pollution. Glass grinding relies on mechanical grinding, sandblasting, and UV curing or hydrofluoric acid etching, which is not only cumbersome but also difficult to balance environmental protection and efficiency. Against this backdrop, laser processing, with its core advantages of high efficiency, environmental friendliness, and reliability, has become a key solution to overcome the pain points of traditional processing methods. Among them, nanosecond-level pulsed infrared lasers, due to their ability to generate higher single-pulse energy and peak power, offer significant advantages in efficiency, cost, and equipment size, and are gradually becoming a core tool in the glass processing field. Fly Laser, a rising star among high-tech enterprises in the laser industry, is redefining glass processing standards with this advanced laser technology, leveraging its years of technological accumulation.
Laser processing technology focuses a beam of light onto the surface of an object, utilizing the high energy density of the focused spot to vaporize or melt the material. Compared to traditional methods, it has three core advantages: first, non-contact processing, avoiding secondary contamination and material damage; second, higher processing precision, meeting the needs of precision manufacturing; and third, high flexibility, easily enabling the processing of irregularly shaped designs. With the development of high peak power laser technology, nanosecond-level high peak infrared fiber laser processing technology has demonstrated enormous potential in the glass field. Fly Laser has further applied it deeply to two core scenarios: glass drilling and frosting, fully releasing the technological value.
Laser Drilling: A Precision and Efficient Hole Processing Solution
Laser drilling employs a unique "bottom-up" processing mode: the laser penetrates the glass and focuses on the lower surface, vaporizing the material layer by layer from the bottom and spiraling upwards to the surface (as shown in Figure 1a). This method allows the fine powder generated by vaporization to fall naturally. Compared to top-down processing of opaque materials, it completely avoids taper issues and ensures consistent through-hole performance. Two filling methods are typically used during processing: inward or outward filling, which can be flexibly selected based on the required inner and outer diameters.
Processing tests conducted by Feilai Laser using a similar technical approach show that when processing 4mm thick ordinary white glass using the YDFLP-200-M8-S-WV2 model, focusing the laser 1-2mm below the lower surface and achieving laser-material contact by moving the 2.5D galvanometer upwards, the chipping on the lower surface can be controlled within 150μm, with a measured chipping of only 136μm. Surface chipping is significantly affected by material type, heat accumulation, and process parameters, with pulse width control being a key optimization method. Experiments comparing four pulse widths (9ns, 12ns, 14ns, and 20ns) revealed that a 12ns pulse width yielded the best processing results, achieving a chipping value of only 291μm at a single pulse energy of 0.95mJ and a repetition frequency of 160kHz.
Fly Laser's nanosecond pulse infrared laser drilling technology further demonstrates its advantages in complex scenarios: when drilling a 0.5mm diameter microhole in 5mm thick ordinary white glass, chipping can be controlled to 92μm, resulting in a straight, taper-free hole. For ultra-thick glass, this technology can drill holes with diameters ranging from 0.3 to 150mm in 20mm thick glass, with chipping in 5mm and 10mm thick glass consistently within 0.3mm. This high-precision and highly adaptable processing capability makes it widely applicable to various fields: from mobile phone glass covers and automotive center console glass panels in the consumer electronics (3C) sector, to eyeglasses and watches in everyday life, and even the processing of wire holes in backplane glass in the photovoltaic industry, all can be efficiently formed using Feilai Laser's technology solutions. Especially in the photovoltaic field, its environmentally friendly characteristics and automated integration advantages make it an ideal choice for the industry.
Laser Grinding: A New Way of Environmentally Friendly and Delicate Surface Processing
Frosted glass, due to its light transmission without transparency, privacy protection, and aesthetic appeal, is widely used in offices, bathrooms, and glass crafts. Feilai Laser's nanosecond pulse infrared laser grinding technology completely changes the drawbacks of traditional processes, achieving a balance between high efficiency, environmental friendliness, and low cost.
Compared to the rough surfaces of mechanical grinding and the pollution problems of chemical treatments, Fly Laser's laser grinding technology can create a delicate and uniform frosted effect on the glass surface. The reprocessing of mirrored glass exhibits unique advantages: after processing on mirrored glass coated with a reflective film, the edges of the frosted area are straight and neat. Combined with lighting, it can present a composite visual effect of "frosted surface transparency and mirror reflection" (as shown in Figures 3a and 3b), providing more creative possibilities for product design. This is consistent with Feilai Laser's accumulated experience in precision processing in the field of glass marking.
From micro-hole processing to ultra-thick glass drilling, from planar frosting to mirror reprocessing, Fly Laser, with its nanosecond pulsed infrared laser technology at its core, has not only solved the quality and environmental challenges of traditional glass processing, but also provided high-quality processing solutions for numerous fields such as industrial substrates, consumer electronics, and photovoltaic energy with its diversified application scenario adaptability, continuously leading technological innovation and industrial upgrading in the glass processing industry.
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