In industries ranging from manufacturing to jewelry making, fiber laser marking machines are heralded for their precision and versatility. However, one common issue users encounter is the problem of shallow typing, which can compromise the readability and permanence of marks. Understanding why this issue occurs and how to address it is crucial for professionals in these fields to maintain high-quality output.

Introduction

Why this content is being discussed: Many users of fiber laser marking machines face the issue of shallow typing, where the marking isn't deep enough on the material surface. This can render the marks ineffective and fail to meet desired standards.

Who it is for, which industry or department it applies to: This guide is tailored for professionals in manufacturing, jewelry, electronics, and automotive industries who rely on laser marking for product identification, traceability, or aesthetic purposes.

In the subsequent article, we will explain the reasons behind shallow typing, terms associated with the process, and guide you step-by-step to effectively address and solve this problem.

Terms Explanation

· Fiber Laser Marking Machine: A device that uses a fiber laser beam to mark or engrave materials. It's known for high-quality, precise, and permanent markings.

· Shallow Typing: A condition where the laser-marked text or design is too superficial on the material surface, making it hard to read or ensuring it doesn’t stay intact over time.

Task Step Guide

Step 1: Identify the Cause

There are several reasons why a fiber laser marking machine might produce shallow marks:

· Inadequate Power Settings: The laser power might be set too low for the material being marked.

· Improper Focus: The focal point of the laser may not be aligned correctly with the material surface.

· Speed Settings: High marking speed can result in more shallow marks as the laser doesn't dwell long enough on the material.

· Material Type: Different materials have different marking thresholds, and some may require more power or slower speeds.

· Lens and Beam Quality: Any issues with the laser lens or beam quality can also affect the depth of the marking.

Step 2: Adjust Power Settings

Increase the Laser Power: Check the current power settings of your machine. Gradually increase the power percentage and perform test markings until you achieve the desired depth.

Example: If your machine is currently set to 50% power, try incrementing by 5% and test until the marking is satisfactory.

Step 3: Calibrate the Focus

Correct the Focus: Ensure that the laser is precisely focused on the material's surface. Out-of-focus beams can cause shallow marks. This may require adjusting the z-axis of your marking machine.

Example: Use an autofocus feature if available, or manually adjust while using test marks to verify the best focus.

Step 4: Adjust Speed Settings

Reduce the Marking Speed: Slowing down the marking speed allows the laser to interact longer with the material, resulting in deeper marks. Be cautious, as too slow a speed can cause burning or damage.

Example: If marking speed is 100 mm/s, try reducing it to 80 mm/s and observe the results.

Step 5: Choose the Right Material

Material Compatibility: Ensure that your material is compatible with fiber laser marking. Some materials respond better to specific laser types or might need additional treatments.

Example: Metals, plastics, and ceramics each have ideal settings to achieve optimal depth. Aluminum might need higher power compared to plastic.

Step 6: Maintain Lens and Beam Quality

Clean the Lens: Dust or residue on the lens can scatter the laser beam and result in subpar markings. Regularly clean the lens with appropriate solutions and use an alignment tool to ensure the beam quality is intact.

Example: Perform a visual inspection and clean at regular maintenance intervals.

Tips and Reminders

· Regular Maintenance: Establish a routine to check and clean your laser marking machine to maintain performance.

· Test Before Production: Always run a test mark on a sample piece of the material before marking the entire batch.

· Consistent Review: Periodically review power and speed settings, especially when marking diverse materials.

Conclusion

Addressing the problem of shallow typing in fiber laser marking machines involves a combination of power adjustments, focus calibration, and regular maintenance. Key takeaways include understanding and modifying power settings, ensuring proper focus, and reducing marking speed. By following these steps, professionals can achieve deeper, clearer, and more reliable marks, ensuring product quality and compliance with industry standards.

Through meticulous adjustments and maintenance, you can optimize your fiber laser marking machine to deliver the best possible results for any material.