How should the frequency and pulse width of a laser marking machine be coordinated?
During the laser marking process, frequency and pulse width are two key parameters, and their coordination directly affects the marking effect. The following is a detailed guide on how to set frequency and pulse width according to different materials and marking requirements:
I. Basic Concepts of Frequency and Pulse Width
- Frequency: Frequency refers to the emission speed of a laser pulse, usually measured in Hertz (Hz). The higher the frequency, the denser the laser dots and the smoother the marking effect.
- Pulse width: Pulse width indicates the duration of each pulse, usually measured in nanoseconds (ns). The shorter the pulse width, the faster the laser energy is released, which is suitable for fine marking.
Ii. Frequency and pulse width Settings for different materials
(1) Metallic materials
- Stainless steel: It is recommended to use a higher frequency (30kHz-80kHz) and a shorter pulse width (10ns-100ns) to reduce the heat-affected zone and achieve fine marking.
Aluminum alloy: Suitable for medium frequencies (20kHz-50kHz) and longer pulse widths (100ns-200ns) to prevent material deformation.
(2) Non-metallic materials
- Plastic: It is recommended to start testing at a low frequency (10kHz-20kHz) and a short pulse width (10ns-50ns) to avoid carbonization.
- Glass: A higher frequency (50kHz-100kHz) and a short pulse width (<100ns) are required to reduce the risk of thermal effects and material breakage.
Iii. Frequency and pulse width Settings for different marking Requirements
(1) Fine marking
- High-frequency applications: Suitable for fine marking, such as text, patterns, etc. The frequency is between 20kHz and 100kHz, and the pulse width is within the range of less than 100ns, which can reduce the heat-affected zone.
(2) Deep engraving
- Low-frequency mode: Suitable for deep engraving, such as mold numbering, etc. The frequency is between 1kHz and 10kHz, and the pulse width is between 200ns and 500ns, which can enhance the efficiency of single-pulse energy deposition.
Iv. Precautions in Actual Operation
1. Testing and Optimization: In actual operation, it is recommended to conduct tests on small samples first, and adjust the frequency and pulse width to achieve the best results.
2. Material properties: Different materials absorb and react to lasers differently, and parameters need to be adjusted according to the specific material.
3. Equipment limitations: Some laser marking machines may not support pulse width adjustment. It is recommended to choose equipment that supports independent adjustment of pulse width and frequency.
By setting the frequency and pulse width reasonably, high-quality laser marking effects can be achieved. In actual operation, adjustments and optimizations need to be made based on the type of material and marking requirements.
.
.
Previous page: How does laser marking software achieve flying marking? Next page: Is it true that the faster the laser marking machine is, the shallower it becomes?
Enhancing Clarity in Wood Laser Marking
How to Deal with Loud Fan Noise from a Laser Marking Machine
Understanding Power Curve Segmentation in Laser Marking Machine Software
Does a Laser Marking Machine Need Regular Calibration?
Achieving Non-Contamination Wafer Marking in Vacuum Chambers with Green Laser Marking Machines
Impact of Water Flow Rate on Laser Marking Machine Performance
How should the frequency and pulse width of a laser marking machine be coordinated?
Is it true that the faster the laser marking machine is, the shallower it becomes?
Will a laser marking machine with 100% power damage the lens?
How to Set the Hatch Spacing for a Laser Marking Machine
What should I do if there is a background pattern on the laser marking machine?
How to Adjust a Laser Marking Machine to Fix Whitening and Yellowing
How to quickly determine the focal length of a laser marking machine?
Why the Red Light on a Laser Marking Machine Is Misaligned and How to Fix It
Why Laser Marking Depth is Inconsistent and How to Fix It