How to ensure the efficiency and effect of laser deep engraving?
01Laser deep engraving market
Laser deep engraving is a common laser processing application in laser processing. Compared with traditional methods, laser deep engraving has the advantages of no pollution, high precision, flexible engraving content, and can meet complex engraving processes. More and more attention is paid, the traditional etching process will also be gradually replaced, and the market prospect of laser deep engraving is broad.
02Influence of pulse width on laser deep engraving
At present, laser deep engraving is mainly used in mold engraving, wheel engraving, car VIN code, embossed artwork, steel logo, gas tank logo, jewelry and other products. The engraving materials include carbon steel, stainless steel, aluminum, copper, high-strength steel, etc. What are the factors that affect the deep carving depth and shading roughness of these materials? Laser power, beam quality, pulse width, light output frequency, filling density, and processing speed, etc. This paper mainly studies the effect of pulse width on deep carving.
Take stainless steel as an example to test the influence of pulse width on deep engraving. When other parameters are constant, the pulse width increases and the deep engraving depth also increases. When the pulse width reaches 350ns, the engraving depth is the largest. This is because the pulse width is increased, and under the premise of ensuring the damage threshold of the peak damage material, the pulse action time is long and the removal efficiency is high, but the shading quality may not be guaranteed.
Large pulse width, high efficiency, rough shading
Small pulse width, low efficiency, fine shading
Through the above data analysis, it is concluded that different pulse widths have different effects on the deep engraving effect. In practical applications, it is necessary to select appropriate parameters according to the deep engraving requirements and take into account the deep engraving efficiency and effect.
03Light to the preferred deep engraving laser
In response to the diversification of engraving needs in the market, Guangzhi Technology has launched the YFPN-100-GL MOPA pulsed laser through special pulse modulation methods, repeated tests and parameter optimization. has significant advantages.
Maximum single pulse energy (mJ): 1.5
High stability: 24h power fluctuation <3%
Adjustable pulse frequency (kHz): 1-1000
Pulse width (ns): 150-350
Guangzhi engineers used GL-100W laser to test the influence of pulse waveform on deep carving for three different metal materials: stainless steel, brass and aluminum
From the analysis of the figure, it can be concluded that the pulse width increases, the engraving depth increases, and the shading effect is consistent; in addition, different material properties have different effects on the deep engraving effect. The melting point of aluminum is the lowest, so the deep engraving efficiency is the fastest under the same conditions.
Aluminum deep carving
copper deep carving
Stainless steel deep carving
The current market demand for engraving is diversified, the hardware industry pursues the depth of engraving, and the electronic device and precious metal industry focuses on fine shading. Guangzhi Technology YFPN-100-GL MOPA pulse laser parameters can be adjusted, which can meet the engraving efficiency and ensure fine shading. In the highly competitive engraving market, Guangzhi Technology will continue to upgrade its products to provide more choices for the majority of users.
