User blogs
Laser Marking Machine Marking Process Classification
According to different materials, different wavelengths of laser light absorption different characteristics, the general laser marking machine is divided into two categories, one is the use of a YAG laser, suitable for processing metal and most non-metallic materials such as iron, copper , aluminum, gold, silver and other metals and various alloys, and ABS material, ink coating, epoxy resin and so on. Another use CO2 laser 5000mw, only the processing of non-metallic materials, such as wood, paper, acrylic, glass and the like. Some materials applies to both types of laser marking machine, but the process will be different effects identified.
YAG laser marking machine includes a lamp-pumped, semiconductor and fiber three categories, CO2 marking machine includes a radio frequency tube and the glass tube into two categories, the five products constitute a laser marking machine standard model. The actual needs of different users, with different shape structure, fixture tooling, tailor-made software systems, constitute a complete laser marking solutions.
With respect to the pneumatic marking, electrical corrosion, marking the traditional way of screen printing, inkjet printer, engraving machine, laser 3000mw marking has the following advantages:1. The laser processing optical contact with the non-mechanical contact, no mechanical stress, it is particularly suitable for high hardness (such as carbide), high brittleness (such as solar wafers), high melting point and high precision (such as precision bearings) special requirements high and other occasions.
2. The energy density of the laser processing of large, time is short, small heat-affected zone, heat deformation small, heat stress and will not affect the internal electrical performance. Especially 532μm, 355μm, 266μm laser cold, special materials for precision machining.
3. direct laser ignition etched a permanent mark, can not be erased, the deformation will not fail to fall off, for Anti-forgery, and product traceability requirements.
4. The 1000mw green laser processing system itself is a computer system, you can easily arrange, modify, there are skip, random code and other functions, to achieve unique product coding requirements, suitable for personalized processing, small batch processing of multiple batches more We have an advantage.
5. Mark the effect of fine, beautiful technology, high accuracy, improve product quality, increase product added value. Width can be as small as 10μm, depth of up to 10μm or less, and can "millimeter" parts of the surface size of the labeling.
6. Low supplies, non-polluting, energy-saving and environmental protection, in line with European environmental standards, in line with the GMP requirements of the pharmaceutical industry. Low processing costs. One-time investment in equipment is more expensive, but continuous, large number of processing and finally to each part of the processing costs down.
7. The flexible processing methods. Through a transparent medium on the inside of the workpiece processing, easy to guide, focus, direction to achieve transformation, easily and with CNC systems.
http://www.everyonetobuy.com/best-30000mw-blue-laser-pointer-flashlight.html
What is the Difference Between Infrared Laser and Ultraviolet Laser?
Infrared YAG laser is the most widely used laser source in material processing. However, many of the plastic and a large number of special polymers used as the base material of the flexible circuit board can not be processed by infrared or heat treatment. Because of the "hot" make the plastic deformation, carbonization form damage in cutting or drilling on the edge, may lead to the weakening and parasitic conduction pathway structural, and have to increase the number of subsequent treatment process to improve the machining quality. Therefore, the infrared laser is not suitable for the treatment of some flexible circuits. In addition, even in the high energy density, the wavelength of the infrared laser 5000mw can not be absorbed by the copper, which is more demanding to limit its scope of use.
However, the output wavelength of the UV laser is below 0.4 mu m, which is the main advantage of the treatment of the polymer material. And infrared processing is different, UV micro processing is not a heat treatment, and most of the material absorption of ultraviolet light is easier than the absorption of infrared light. High energy ultraviolet photons directly destroy the molecular bonds of many non metallic materials, and the parts that are processed by this "cold" light etching process have a smooth edge and a minimum of carbonization. Moreover, the mechanical properties of short wavelength UV itself on metal and polymer micro processing advantages. It can be focused to sub micron level points, so the processing can be fine components, even when the pulse energy level is not high, can also obtain the energy density is high, effectively materials processing.
Application of fine pores in the industry has been quite extensive, the main way is formed in two ways: First, the use of infrared laser 3000mw: The substance material surface heated and vaporized (evaporated) to remove the material, in this way is commonly referred to thermal processing. Mainly YAG laser (wavelength 1.06μm). Second, using an ultraviolet laser: high-energy ultraviolet photons directly undermines many of the molecular bonds of the surface of non-metallic materials, the molecule from the body, this approach does not produce high heat, it is called cold, mainly UV laser (wavelength 355nm).
http://www.everyonetobuy.com/best-30000mw-blue-laser-pointer-flashlight.html
Bicycle with LIDAR
Summer, for bicycle lovers, nothing beats the winding road Sahuan children laps, more people feel comfortable a pleasant. But the road from time to time to jump out of the vehicle it is very hard to detect, no matter how frequently you observe the rearview mirror, even subconsciously always back squint, but it will still be "swishing" exceed scared is not a laser 3000mw car.
Summer, for bicycle lovers, nothing beats the winding road Sahuan children laps, more people feel comfortable a pleasant. But the road from time to time to jump out of the vehicle it is very hard to detect, no matter how frequently you observe the rearview mirror, even subconsciously always back squint, but it will still be "swishing" exceed scared is not a light car.In fact, the ideal is to install a laser 5000mw radar (commonly known as "lidar", and it works the same as ordinary radar, but the system emits a laser, not a conventional radio waves), its range fully meet the requirements, but the price is it is ridiculously expensive, on the bike, it is inevitable that some "overkill."
However, a start-up company from Oregon Bender's PulsedLight, introduced a simplified version of the laser radar products --Lidar-lite, like a "timely" to solve the security problem Paul and I have been worried. This relies on crowdfunding launch laser radar detectors, although less than half the size of a deck of cards, but a range of up to 40m, detection accuracy is within ± 2.5cm range, all for only $ 89.Receive the package the first time, Paul can not wait to fiddle opened up. But a little "wonderful" is that this lidar four signal lines are all wrapped in black jacket, the subsequent operation is very unfavorable, so Paul in the first line of each affix different labels, in order to facilitate the distinction. Here we also need to purchase a microprocessor containing Arduino board and connected 30000mw laser pointer radar, finally connecting the circuit board PC via a USB cable, driver software provided by the official line operation, the system is able to adjust to normal work can be. Finally, Paul will contain a four alphanumeric display board access Arduino, a simple programmed, a compact and lightweight rear warning system even if "done" the.
The next most important thing is, you have a whole in the rear of the car can be placed lidar small frame, but also to ensure high speed and severe jarring will not "disintegration." Although this is not an easy job, but PulsedLight engineers in addition to the official website released the operating manual, data sheets and simple Arduino program instructions for reference, but also provides a protective shell production parameters of laser radar 3-D model. Paul raw data Openscad the model was appropriately modified and made by 3D printer.
In addition to the 20000mw laser pen radar placed within a housing, a microprocessor, there is a 6mm thick foam lining, it can play the role of shock protection device. Another point to note is that the entire system is fixed to the car, should the laser radar lens slightly tilted a few degrees to the left, in order to prevent long-range laser transmission bifurcation, to monitor the impact on the rear of the car.
Finally, three DC inverter Paul chose to shunt and AA batteries replaced two batteries contain a rechargeable lithium battery, the maximum output voltage of 7.4V, by 7805 the regulator output voltage can be reduced to 5V, meet the job requirements throughout the lidar system. Although he abandoned the body more tiny, more efficient AA batteries, but this performance and a pair of AA lithium batteries is almost the same. So, headache supply problem finally solved it!PulsedLight offering a simplified version of the 10000mw blue laser radar and an Arduino microprocessor has good compatibility, the use of lithium batteries to power for the entire system. Additional LED display mounted at the handlebar, the rider can clearly inform, to the rear of the car away.
After that in the end the effort to build this Paul car warning system in the end tube regardless of use? In fact, there to be test of time. Paul told me that when he properly debug the system, see LED display at the handlebar display the signal at the rear 35m have a car approaching, because too excited, even forget the car moved to the roadside. In addition, he is also preparing to re-create a protective shell, you can easily adjust the angle of the laser emission, and have to pondering, how can be made without dismantling the entire system case, can easily to charge the lithium battery.After several days of experience, Paul found 2000mw green laser radar range to be smaller than expected, especially in poor sight curve, probe the effect is not ideal. He also said that the system is very easy to send out false alarms, and in order to reduce the false alarm rate, the speed will only decrease. Although there are many shortcomings to be excavated, but this simplified version of the laser radar has actually regarded as a good cost-effective traffic safety product. Of course, we should face a more complex road conditions, advise you still can not rely too much on the radar judgment. At this time, the muscles taut, erect ears, see the machine to hide is the best policy.
http://636653.xobor.com/t295217f2-Laser-Gyro.html
