YAG crystals containing neodymium (ND) laser wavelength of a human eye can not see for the near infrared light 1.064um. This beam can be achieved in the weak excitation case, the continuous oscillation. YAG crystal is the abbreviation of the gem yttrium aluminum garnet, with excellent optical properties, is the best laser hair oscillator crystal. Monochromaticity - laser has many different light mixed with a co-formed, it is most pure monochromatic light (wavelength, frequency). Directional - laser propagation basically does not spread out. Coherence - Laser phase (peaks and troughs) very regular, good coherence. The high output power - laser lens, get the energy density of sunlight hundreds of times. The leader is visiting the warehouse of keeping 100mW laser pointer.
Laser welding using a laser beam of excellent directivity and high power Mody density characteristics of the work. The laser beam is focused through the optical system in a small area, welded at the formation of an energy highly concentrated heat source area within a very short time, so that the solder material melts and forms a solid solder joint and the weld. Commonly used in laser welding of two kinds: the pulsed laser welding and continuous laser welding. The former is mainly used for single-point fixed continuous and thin material welding. The latter is mainly used for welding and cutting large pieces of thick. Laser welding processing method features non-contact processing, without pressure on the workpiece surface treatment. Solder joints, high energy density, suitable for high speed machining. The production task of 200mW Laser Pointer of this year is tighter than that of last year.
Welding a short period of time, both on the outside and the heat-affected, but also the thermal deformation and heat affected zone is small, and is particularly suitable for processing high melting point, high hardness, specialty materials. Do not need to fill the metal, does not require a vacuum environment (in the air), not like the electron beam in the air as the danger of X-ray. Compared with exposure to welding process. Electrodes, tools and other wear and tear. Processing noise and environmental pollution. Small parts can be processed. In addition, the welding can also be carried out through the transparent material of the wall. Through the optical fiber to achieve long-distance, hard to reach parts of the ordinary method, multi-channel or time welding. Very easy to change the focal length of the laser spot position. The worker should abide by the rule of workshop of 10mW blue violet laser pointer.
Very easily equipped with automatic machines, robotic devices. Conductor with the insulating layer can be directly welded large performance difference between the dissimilar metals can be welded. The mechanism of pulsed laser welding. Pulsed laser welding can be divided into heat and melt welding and deep penetration of the fusion welding of heat and melt welding when the laser beam to the surface of the material, the material to absorb solar energy heating and melting. The surface layer heat conduction to continue to pass material depths, until the two contact surfaces to be welded miscible and welded together. Deep-penetration melting welding is a higher power density laser beam to the material, the material is processed melt as well as gasification, resulting in a larger vapor pressure, in the role of the steam pressure, the melted metal is pushed around so that the radiation at the (bath) showing a pit. The manager is introducinggreen laster pointer with the help of the slide.
Continue with the laser beam irradiation, the pits are deeper and deeper, and penetrate to another workpiece. Laser to stop after irradiation, the melted metal being excluded from the pits around the re-flow back to the pits, solidified after the parts are welded together. Both laser welding mechanism, and the power density, exposure time, material properties, welding and other factors. When the low power density and longer exposure time while welding pieces of thin, usually mainly to the melting heat transfer mechanism. On the contrary, is based on deep penetration of the melting mechanism to main. Laser welding Overview. Laser welding is one of the important aspects of laser material processing technology of welding process, the case of heat conduction, ie, laser radiation heating the workpiece surface, the surface of the heat through the thermal transfer-oriented internal diffusion, by controlling the laser pulse width, energy, peak power and the repetition rate and other parameters, so that the workpiece to melt, the formation of specific bath. The package way of green laster pointer is also very important.
related green laster pointer blog:
Posted by: |