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 to welding parts, weld material types can range, but also a variety of heterogeneous materials, bonding with each other. 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 do not need to vacuum, do not need to do X-ray protection. If through-hole solder, weld depth up to a 10:1 aspect ratio laser beam can switch the device will be sent to multiple workstations. The battery of this kind of laser pointer has the leakage-proof design.
The main disadvantage of laser welding. 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. Laser welding of stainless steel. This kind of laser pointer has the fashionable appearance design.The customer asks for the product model of laser pointer. Commonly used in electron beam welding are: high vacuum electron beam welding, low-vacuum electron beam welding and non-vacuum electron beam welding. The first two methods are carried out in vacuum chamber. Weld preparation time (mainly vacuum time) is longer, the workpiece size by the vacuum chamber size limits. Electron beam welding and arc welding compared to the main feature is a large weld penetration, melting width is small, the weld metal of high purity. It can be used in precision welding thin materials, can be used on very thick (the thick 300mm) component soldering.
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