The technical review of green laser pointer is not easy to pass

 The technical review of  green laser pointer  is not easy to pass.
Are molten welding, laser beam energy, the impact on the joints in the weldment. Laser beam by the planar optical elements (such as mirrors) guidance, followed by reflections or focusing lens component in the beam projection weld. Laser welding is a non-contact welding operation process without pressure, but need to use an inert gas to prevent oxidation bath, with occasional use of filler metal. Laser welding and MIG welding can be composed of laser MIG hybrid welding to achieve a large penetration welding, and MIG welding heat input than greatly reduced. Heat input can be reduced to the minimum requirements, heat-affected zone microstructure range is small, and due to the deformation caused by heat conduction is also the lowest. 32mm thickness of single-channel welding been certified by welding parameters, weld plate can be reduced or eliminated in the time required for the use of filler metal. Without the use of electrodes, no electrode contamination or damage concerns. And because they do not belong to-contact welding processes, equipment wear and tear and then the deformation can be reduced to a minimum. Easy to focus the laser beam, aligned and guided by the optical instruments can be placed in the appropriate distance from the workpiece and the workpiece can be equipment or barriers around the room and then guided by the result of other rules of welding the space limitations and can not play . Workpiece can be placed in a closed space (by vacuum or under the control of the internal gas environment). Laser beam can be focused in a small area, the interval may be small and similar welded parts. Weldable material type over large areas, a variety of heterogeneous materials can be of mutual engagement. The technical review of  green laser pointer contains a lot of checking items.
Easy to automate for high-speed welding, can also be digital or computer-controlled. Welding thin materials or small diameter wire, such as arc welding is not as easy to melt with back problems. Not affected by magnetic fields (electric arc welding and electron beam welding is easy), can accurately alignment weldment. Weldability of different physical properties (such as different resistance) of the two metals. Without vacuum, do not need to do X-ray protection. If through-hole solder, weld depth an aspect ratio up to 10:1. Laser beam can switch the device will be sent to multiple workstations. Weldment to be very precise location, be sure to focus the laser beam range. Weldments need to use fixtures, to ensure that the final position of weldment and the laser beam will be the impact of solder joint alignment. Maximum thickness of weld penetration is restricted far more than the 19mm thickness of the workpiece, the production line is not suitable for laser welding. High reflectivity and high thermal conductivity material such as aluminum, copper and its alloys, will be affected by the laser welding of the change. When the energy in high energy laser beam welding, the controller will need to use plasma ionized gas around the pool get rid of, to ensure that bead again. Energy conversion efficiency is too low, usually less than 10%. Rapid solidification of the weld may have holes and embrittlement concerns. Expensive equipment. All the checking items of technical review of  green laser pointer  should be passed.