Achieving Grade A Direct Part Marking (DPM) with 1064 nm Fiber Laser on Glass QR Codes According to ISO/IEC 29158
Abstract:
The application of 1064 nm fiber lasers in marking glass substrates with QR codes is becoming increasingly prevalent due to its precision and permanence. This article discusses the criteria for achieving Grade A Direct Part Marking (DPM) as per the ISO/IEC 29158 standard, focusing on the optimization of laser parameters to ensure high-quality and durable markings.
Introduction:
Direct Part Marking (DPM) is a method of marking parts directly onto the surface or into the substrate of the part itself. The ISO/IEC 29158 standard sets the requirements for the quality of DPM, categorizing it into different grades, with Grade A being the highest. For glass substrates, which are commonly used in various industries, achieving Grade A DPM with a 1064 nm fiber laser requires careful control over laser parameters to ensure the二维码's readability, durability, and resistance to environmental factors.
Materials and Methods:
The study involves the use of a 1064 nm fiber laser marking machine to inscribe QR codes onto glass substrates. The laser's parameters, including power, frequency, and scan speed, are adjusted to optimize the marking process. The glass substrates are prepared with a standard size and thickness to ensure consistency in the experiments.
Results:
The results indicate that achieving Grade A DPM requires a delicate balance of laser parameters. The power of the laser must be sufficient to create a clear and permanent mark on the glass surface without causing excessive heat damage that could lead to microcracks or other defects. The frequency and scan speed must be coordinated to ensure uniform marking across the entire QR code, avoiding any distortion or loss of detail.
Discussion:
To meet the Grade A criteria, the laser marking process must produce QR codes with high contrast, sharp edges, and no blurring. The depth of the marking should be controlled to avoid etching too deeply into the glass, which could compromise the surface integrity and readability. The use of a high-quality lens system in the laser marking machine is crucial for focusing the laser beam precisely onto the glass surface, ensuring that the beam diameter and energy distribution are optimal for the marking task.
Conclusion:
Achieving Grade A DPM with a 1064 nm fiber laser on glass requires meticulous control over laser parameters and a thorough understanding of the interaction between the laser and the glass substrate. By optimizing the laser power, frequency, and scan speed, and using a high-quality lens system, it is possible to inscribe QR codes that meet the ISO/IEC 29158 Grade A standard, ensuring long-lasting and high-quality markings that are resistant to environmental degradation and wear.
Keywords: 1064 nm fiber laser, Glass, QR codes, Direct Part Marking (DPM), ISO/IEC 29158, Grade A, Laser marking machine.
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