Australian Journal of Mechanical Engineering: Vol. Depends on different materials and the marking effects you want so for a new operator may need conduct dozens of trials to know the ideal marking parameters for each material and even some experienced engineers […] I have been in contact with Trotec's support staff and cannot get one single answer to anything it seems. In contrast to fiber-delivered lasers, the entire path of the beam is within a fiber-optic cable all the way to the beam delivery optics. solutions for each unique application. The following illustrates these processes in detail with examples. Factory cut chart settings. Laser cutting and engraving can be done using a CO 2 laser. Some additives contain mixtures of antimony-doped tin oxide and antimony trioxide that can impart a "grayish" tint to the natural (uncolored) substrate opacity. IPG Photonics, a leading developer and manufacturer of high-performance fiber lasers, offers both fixed-pulse YLP Series (sometimes referred to as "Q-switch") and variable short-pulse YLPN (MOPA) lasers. Pulse repetition rate and peak power density are critical parameters in forming the mark and achieving the optimal contrast and speed. The advantages of 2 µm thulium fiber laser welding of polymer-metal and polymer-polymer combinations have been recently reported. Choosing a laser engraving machine for yourself. The laser light is of materials. That is what is happening with the laser engraved PMAGs. Laser Engraving Settings. Direct ink printing puts an image on the surface of the plastic which can be removed by abrasion or solvents, but Laser marking can provide an indelible high-contrast mark in the material itself, with no direct contact with the plastic other than through the incident Laser beam. The fiber laser engraver is a good metal laser engraver which can better suitable for various gun parts marking, you could consider purchase the engraving machine with a reasonable price from China. Monday – Friday 9am to 5pm CST (Lunch from 12:00-1:00pm CST) Additional contributing factors that influence the marking contrast and quality are, of course, beam velocity and vector line separation distance. All fiber lasers are not created equal. Futonics fiber lasers are ideal for welding a variety of clear and colored thermoplastic materials. Short pulses, typically <40ns, enable more controlled energy input when processing sensitive polymeric materials. Scott F. Scott is a firearms enthusiast and gun hobbyist whose primary interest is the practical application of gun ownership. (2019). Most polymers are transparent to laser radiation at wavelengths in the range of 1000 nm . Most are easily dispersed in polymers. Another solution might be to coat a white or transparent part with a clear, nanoparticle-bearing polymer film that selectively absorbs the appropriate wavelength. Laser marking on polyethylene can be obtained with either a CO 2 or a fiber laser source. 17, Design, Manufacturing and Materials, pp. Adopting a laser-based system that is able to track the component or assembly as it moves along the production line creates a precise and indelible mark as it does so, without interfering with the production flow. If youโ€™d like to learn more about ablative laser cutting, check out this article on Micron-Scale Manufacturing.. Using a fiber laser on wood is essentially like starting a campfire. Non-contact digital laser marking replaces expensive adhesive labels and ink-chemical printing processes. Breakthrough FDA-approved laser additives incorporated into polymers yield superior marking contrast, line edge detail, and speed. Polyethylene laser marking. For the European Union, there are similar compliance statements. The 1064nm wavelength of a fiber laser transmits partially through organic structures (like wood) based on its shorter wavelength. However, when the beam travels into wood, its absorption can’t be controlled. High-power fiber laser has been proven to be feasible for cutting carbon fiber reinforced polymers with several advantages including noncontact force, high efficiency and flexibility, while the characteristics of thermal damage and heat conduction in materials are not yet fully understood. Fiber Laser Settings. Temporal pulse shape of an IPG Photonics fixed-pulse-length laser at 100ns pulse length (a) and an IPG Photonics MOPA laser at 4ns pulse length (b). Each polymer grade, even within the same polymeric family, can produce different results. Clear, semi-transparent, and opaque colored polymers, including nylons, polyethylene terephthalate (PET), polycarbonates, polyolefins, polyvinyl chloride (PVC), styrenics, and thermoplastic elastomers (TPUs) and thermoplastic polyurethanes (TPEs), are uniquely formulated using non-heavy metal, FDA/European Food Safety Authority (EFSA)-approved additives to achieve high-contrast marking quality (FIGURE 1). Ask an expert LMM14 Laser Settings Page 2 of 2 Suggested Laser Settings Used for Beam Steered ND:YAG or Fiber Laser with a 100mm lens Material Power (W) Speed (cm/sec) Hatch Spacing โ€œ CW Mode or Q-Switch Freq Stainless Steel 8 25 .002 CW / โ‰ฅ50KHz Stainless Steel - Bright Annealed 7 25 .002 CW / โ‰ฅ50KHz Galvanized Steel 7 15 .002 CW / โ‰ฅ50KHz We demonstrated efficient and photostable laser action in graded index polymer fiber lasers doped with organic dyes such as Rhodamines, Perylenes and Pyrromethenes. Laser processing of glass fiber reinforced composite material: a review. White contrast on dark-blue automotive exterior/under-hood components using IPG Photonics' YLPN Laser. Commercially supplied, specific additives (also used for laser welding) have received FDA approval for food contact and food packaging use under conditions A-H of 21 CFR 178.3297 – Colorants for Polymers. Because of the complexity of factors influencing on-the-fly production marking capability, every application must be precisely examined. Acrylic. Other additives can contain aluminum particles, mixed metal oxides, and proprietary compounds. Fast speed, superior contrast, and cost savings are among the significant benefits. Some colorant compounds containing low amounts of titanium dioxide (TiO2) and carbon black may also absorb laser light, and in some instances, improve the marking contrast. Corrosion-resistant black marking of medical devices. materials processing and fiber lasers have. Frequency – The pulse repetition rate of the laser. For both graphs, the particular combination of parameter inputs controls the output properties of the laser beam, namely the pulse energy, the peak power (the highest instantaneous peak of the pulse energy, joules/pulse duration), and the average power (average power in watts = pulse energy in joules × pulse repetition rate in hertz). laser machining, marking plastics and metal using a fiber laser (plotter or Galvosystem) can involve different processes. For this reason, the fiber laser (a type of solid-state laser) is a better choice when marking metals. Advantages; Lease Calculator; Section 179 Tax Credit; Lease Application; Lasers for Marking & Engraving. Vanadate lasers also possess a small M2 value with shorter pulse width than fixed fiber and YAG lasers. Compared to ink printing processes (pad/screen printing and inkjet), laser additives are cost-saving and can demonstrate 20% and faster marking speeds vs. non-optimized materials. 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