Beam-Steered Laser Marking of Plastics
Beam steering Nd: YAG (Neodymium: Yttrium Aluminum Garnet) лазер marking provides a unique combination of speed, endurance, versatility and image in a non-contact labeling. Лазер marking can generate significant savings in production costs and processing costs, elimination of secondary processes and consumable disposal costs and reduced inventory, cost control and maintenance of quality time. Лазер marking frequently improves the aesthetic image tagging, which makes the experience all the materials value.
Of product, plastics are the most difficult in terms of interaction with the лазер material and the quality of the image request. The wide variety of colors and materials chemistry and aesthetic needs of plastics applications require particular attention both in physical chemistry and imaging techniques. The successful implementation of лазер marking technology requires a thorough knowledge of лазер marking function and capabilities and a dedicated team approach, from fundamental user.Marking лазер marking is a thermal process that concentrated high-beam лазер to create jobs work contrasting mark on the surface of the material.
If the target material absorbs лазер Ñвет, the surface temperature increases causes a color change in hardware and / or evaporation of material surface.Beam controlled лазер marking, engraving mirrors mounted on high-speed multiplier developed computer controlled лазер beam on target surface. Each galvanometer provides one axis of movement of the beam on the marking. A group of multi-element optical flat-field focused лазер light before the power density to reach the work surface, while maintaining the travel site focused on a flat surface.
The лазер output is generated to remove the bar between the strokes.Marking marker capable of operating at speeds up to mm / sec with a speed between successful branding of 50,000 mm / sec 5000. Since the process is based on the thermal conductivity of plastic marker speed is usually slower than the maximum capacity of the guidance system sufficient for the desired results marker beam controlled almost all black and white images, including the double line of variable widths reach and images smaller 0.
0001 inches. Computer Imaging Technology offers this very complicated maps with line widths, resolution and accuracy less than 0.001 inches. Because the image is made by "drawing" with the лазер beam, marking depends on the amount and complexity of the text and images. computer-generated images, any graphic or all of the tagging program immediately be changed before a new part is positioned to marking.Nd: 1.06 mm strengthen YAG wavelength of light in the near infrared. They are unique among the various types of лазерÑ, in the sense that much work like a capacitor "optical".
In the pulse operation, the Nd: YAG лазер energy reserves between pulses, leading to peak powers in kilowatt-hours of energy from light. A Nd: YAG лазер output of 75 watts of continuous light, pulsed at 1 kHz, emits a train of pulses with a peak power of 110,000 watts. The capacitor "optical effect gives the ability to act necessary for the evaporation zone. For applications summary, the лазер must be a" hat "high mode, where supply of electricity is relatively uniform across the diameter of лазер beam to eliminate "hot spots" in the marking path.
The steered beam Nd: YAG лазер marker often replaces acid and electro-etch systems, stamping and punching systems and other brands permanently mark produced by printing or engraving. It replaces other printing systems with less permanent ink plastic plastic more naked jet.Uncoated be doped with a material that reflects the лазер wavelength as the absorption of лазер light to avoid to lose control of excessive heat and merging areas. colored plastic doped mica, titanium dioxide or carbon-containing materials.
The heat generated by absorption of лазер light causes the carbon to migrate to the surface, producing a contrasting dark stain on the bottom intact plastic.Plastics are semi-transparent to a wavelength

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