Laser Machine World for Laser Technology and Laser Products

  Recently, researchers from the University of South Australia (UniSA) , the University of Adelaide (UoA), and Yale University (US) have demonstrated that they can increase the power of fiber lasers by a factor of 3-9 with the help of a new multimode fiber, without degrading the quality of the beam, so that it can be focused on a distant target.   The development was published in the journal Nature Communications . The joint Australian-American research team responsible for the study says that wavefront shaping of the input light raises the power threshold for SBS scattering by a full order of magnitude.   For his part, Dr. Linh Nguyen, a researcher from the University of Adelaide, University of South Australia, said that this new approach will allow the industry to continue to output very high power from fiber lasers, making them more useful for the defense industry, remote sensing applications and gravitational wave detection.   " High-power fiber lasers are criti...

Characteristics of laser deep melting welding 1.  High depth-to-width ratio. Because the molten metal is formed around a cylindrical high-temperature vapor cavity and extends toward the workpiece, the weld becomes deep and narrow.   2.  Minimum heat input. Because the temperature inside the small hole is very high, the melting process occurs extremely fast, the heat input to the workpiece is very low, and the heat distortion and heat-affected zone are very small.   3.  High densification. Because the small holes filled with high-temperature vapors are conducive to weld pool stirring and gas escape, resulting in the generation of non-porous penetration weld. High cooling rate after welding and easy to make the weld organization fine.   4.  S trong solid weld. Because of the blazing heat source and the full absorption of non-metallic components, reduce the impurity content, and change the size of the inclusions and their distribution in the molten pool. ...

The biggest advantage of hydrogen fuel cell technology is its high range and fast hydrogen refueling, and hydrogen is needed by industries such as steel, chemical, aviation, etc. In the future, hydrogen fuel cells will not only cover passenger cars and commercial vehicles, but also application scenarios such as unmanned aerial vehicles, ships, rail transportation, and electric motors for power generation. Typically a single fuel cell cell produces less than 1 volt, so many fuel cell cells need to be stacked side-by-side to get enough volts in an application. Therefore, the fuel cell consists of several small cells, each of which consists of bipolar plates and MEA as the main components, which are formed by laser welding the cathode and anode plates together.   Hydrogen fuel cell welding is a very time-consuming process, and completely sealed welding is a basic requirement. Low-quality welding can seriously affect the working performance and service life of the fuel cell and even le...

  1.  A ventilation distance of about 10cm should be left before and after the equipment. Ventilation distance is not enough will probably lead to internal laser failure and can not work. 2.  T he laser cleaner's normal use of the temperature range of 0 ~ 40 degrees Celsius, beyond the operating temperature range will likely lead to an internal laser system alarm and not light, which is a protective behavior, that can effectively protect the long-term use of the reliability of the equipment.   3.  T he laser cleaning machine on the environmental cleanliness requirements of the higher, use or move the cleaning machine in the process of careful handling of the optical head to prevent dust or other contamination, If the equipment is not in working order, please use a protective cover to cover the laser output port. Dust on the output side of the handheld head may lead to heat and damage to the lens, resulting in equipment output power attenuation or failure to pro...