A protecting key is provided for this kind of laser pointer

 A protecting key is provided for this kind of laser pointer .
For example, when hardened steel gears welded to mild steel drum, the right to control the laser beam position will help to produce mainly low-carbon components of the composition of the weld, the weld that has good crack resistance. Some applications, the geometry of the workpiece to be welded requires a laser beam deflection angle of the beam deflection angle between the axis and joint plane at 100 degrees or less, the workpiece to the laser energy absorption is not affected. Welding start and end points of the laser power gradually rise, gradually decreased control. At the same time, laser pointer can serve as the necessary accessories.
Laser deep penetration welding, the weld regardless of the depth of the hole phenomenon is always present. When the welding process to terminate, close the power switch, weld end crater will appear. In addition, when the laser welding layer covering the original weld, there will be excessive absorption of the laser beam, resulting in overheating or produce weldment holes. To prevent this phenomenon, starting and ending points can be programmed on power, so power becomes adjustable start and end time, that the initial power method with electronics rose from zero in a short period of time set power value, and adjust the welding time, the final termination of the power in the welding power gradually reduced to zero by the set value. Deep penetration of laser characteristics and advantages and disadvantages. Deep penetration of the laser characteristics. The customer no longer needs to use the traditional mouse and keyboards for laser pointer is more convenient.
High aspect ratio. Because high-temperature steam molten metal around the cylindrical cavity formation and extension of the workpiece, the weld becomes deep and narrow. Minimum heat input. Because the temperature inside the holes is very high, the melting process happened so fast, low heat input workpiece, heat distortion and heat affected zone is very small. High compactness. Because high-temperature steam filled the small Kongyou Li in the weld pool stirring and gas escape, leading to generate non-stomatal penetration welds. High cooling rate after welding to weld and easy to granular. Strong weld. Because red-hot heat and non-metallic components of the full absorption, reduce impurities, changes in pool size and inclusions in the distribution. Welding electrode or filler wire without melting zones were affected by pollution, making the weld strength, toughness, at least equal to or more than the parent metal. laser pointer must be used prudently.