Fiber lasers have become a hot topic in laser physics research in recent years, and it is unanimously regarded as a new generation of products that may fully replace solid-state lasers. Fiber laser refers to the use of rare-earth-doped glass fiber as a gain medium laser, fiber laser can be developed on the basis of fiber amplifiers: in the role of the pump light within the fiber is very easy to form a high power density, resulting in laser energy level of the laser working material, "the number of particles inverted", when appropriate to add a positive feedback loop (constituting the When the appropriate addition of positive feedback loop (constituting a resonant cavity) can be formed laser oscillation output. Fiber laser marking machine is the use of laser beams in a variety of different substances on the surface of a permanent mark. The marking effect is through the surface material evaporation to reveal the deep material, or through the light energy to cause physical changes in the surface material and "carved" traces, or through the light energy to burn off part of the material, showing the required etching patterns, text, bar codes and other types of graphics.
The so-called fiber laser marking machine refers to the marking machine using fiber lasers, fiber lasers have a small size (no water-cooling device, the use of air-cooled), good beam quality (base mode), maintenance-free and other characteristics, mainly by the laser, vibration lens, marking card consists of three parts, the use of fiber lasers to produce laser marking machine, the beam quality is good, the output center of 1064nm, the entire life of the machine in the 100,000 Hours or so, compared with other types of laser marking machine life longer, electro-optical conversion efficiency of 28% or more, compared with other types of laser marking machine 2% -10% conversion efficiency advantages, in energy saving and environmental protection and other aspects of outstanding performance.
Equipment features
- Can be a variety of metal, non-metallic materials for processing. Especially for high hardness, high melting point, brittle material marking more advantageous.
- Belongs to non-contact processing, does not damage the product, no tool wear, marking quality.
- The laser beam is fine, processing material consumption is very small, processing heat-affected zone is small.
- High processing efficiency, the use of computer control, easy to realize automation.
Application field
Widely used in integrated circuit chips, computer parts, industrial bearings, clocks and watches, electronic and communication products, aerospace devices, a variety of automotive parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco, as well as military affairs, and other areas of graphic and text marking, as well as high-volume production line operations.
Main features
Fiber laser is divided into two categories of products: continuous fiber laser and pulsed fiber laser. According to the power size there are:
- Continuous 1000W to 4000W
- Pulsed 20W, 30W, 50W, 100W to 1000W
Fiber laser marking machine for today's international most advanced laser marking equipment, with good beam quality, small size, fast speed, long working life, flexible and convenient installation as well as maintenance-free and so on. Fiber laser, the latest international, the most reliable structure, compact size, small power consumption, no high voltage without a huge water cooling system (only about 300W), high beam quality, close to the ideal beam, USB interface output control, optical scanning mirror, high laser repetition frequency, high-speed distortion-free.
Future Advantages
- Glass fiber manufacturing low cost, mature technology and its fiber sparing the miniaturization and intensification of the advantages brought about by the sparing nature of the fiber.
- Glass fiber on the incident pump light does not need to be as strict as the crystal phase matching, this is due to the glass matrix Stark splitting caused by non-uniform broadening caused by the absorption band is wider.
- The glass material has a very low volume-to-area ratio, fast heat dissipation and low loss, so the upper conversion efficiency is higher and the laser threshold is low;
- The output pump light is not strictly phase-matched as in the case of crystals, due to the non-uniform broadening caused by the Stark splitting of the glass matrix.
- Output laser wavelengths: this is because of the rare earth ion energy levels are very rich and its rare earth ion species of the many; (5) the output laser wavelengths: this is because of the rare earth ion energy levels are very rich and its rare earth ion species of the many.
- Tunability: due to the wide energy levels of rare earth ions and the broader fluorescence spectrum of the glass fiber.
- Due to the fiber laser's resonant cavity without optical lenses, it has the advantages of adjustment-free, maintenance-free and high stability, which is incomparable to traditional lasers.
- Fiber export, so that the laser can easily handle a variety of multi-dimensional arbitrary space processing applications, so that the design of the mechanical system becomes very simple.
- Competent in harsh operating environments, with high tolerance for dust, vibration, shock, humidity and temperature.
- No need for thermoelectric cooling and water cooling, just simple air cooling.
- High electro-optical efficiency: the comprehensive electro-optical efficiency is up to 20% or more, which substantially saves power consumption at work and saves operating costs. High power, commercial fiber laser is six kilowatts.
Daily maintenance
The machine does not work, should cut off the marking machine and computer power supply.
When the machine is not working, the field mirror lens cover to prevent dust contamination of the optical lens.
When the machine is working, the circuit is high voltage, non-professionals, do not overhaul the machine when it is turned on to avoid electric shock accidents.
Any failure of the machine should immediately cut off the power supply.
Equipment used for a long time, the dust in the air will be adsorbed on the surface of the lower end of the focusing mirror, the lighter will reduce the power of the laser, affecting the marking effect; the heavier caused by the optics of the lens to absorb heat over-temperature so that cracked. When the marking effect is not good, should carefully check whether the focusing mirror surface is contaminated.
If the surface of the focusing mirror is contaminated, the focusing mirror should be removed to clean its lower surface.
Remove the focusing mirror should be especially careful, pay attention not to touch or fall; at the same time, do not touch the focusing mirror surface with your hands or other objects.
Cleaning method is anhydrous ethanol (analytically pure) and ether (analytically pure) mixed at a ratio of 3:1, with a long fiber swabs or lens paper into the mixture, gently scrub the lower surface of the focusing mirror, each rubbing one side, shall be replaced by a swab or lens paper.
In the marking machine work process, do not move the marking machine, so as not to damage the machine.
Marking machine do not cover the pile or put other items, so as not to affect the machine cooling effect.
Application industry
There are a lot of people on the laser marking machine is not a very good understanding of the industry, so it will not be clear what industry will be used, not clear their industry will not be used, in fact, the laser marking machine is very wide range of applications, in terms of the concept of useful to marking can be used to laser marking machine, but specifically or for the material to be determined, there are materials that only need to be printed on it does not need to be used to the laser, because the laser is a fine marking, if the use of the laser, it is not necessary to use the laser. In the fine brown workpiece is a little too big to use, but how to know what products are suitable for laser marking machine, then come to a specific example; in the hardware industry, wrenches, gauges, sanitary ware, stainless steel tableware, medical equipment, bags, purses, gift industry there are many, such as metal gifts, wooden boxes, USB flash drives, notebooks, clocks and instruments, metal cases, watch bottom, eyeglasses frame, instruments and panels, and also the packaging industry and electronic communications industry. In addition, there are packaging industry and electronic communications industry, cell phone shells, electronic components of the laser marking. So through these we know that the laser marking machine is a vast market prospects, and this market is still to be re-developed, re-exploration, so the laser marking machine enterprises should set an example, good quality, to open the market, in order to solve the problem for the customer to bring profits, so in the future there will be a greater space for development and better market prospects. So do a good job at the moment, look to the future is to cater to the market, to create a good start performance.
