The used can simply press the related buttons on green laser pointer

The used can simply press the related buttons on green laser pointer .
green laser pointer can serve as normal laser pens for teaching
Butt joints in this more sensitive than the lap of the knot. For example, when the hardened steel gear low carbon steel welded to the drum, the right to control the laser beam position will benefit mainly low-carbon component composition of the weld, the weld has good crack resistance. Some applications, the geometry of the workpiece being welded requires a laser beam deflection angle between the beam axis and joint plane deflection of less than 100 degrees, the workpiece on the absorption of laser energy will not be affected. Welding start and end point of the laser power gradually, gradually decreased to control. Deep penetration laser welding, the weld depth of the holes phenomenon always exists. When the welding process to terminate, turn off the power switch, weld the end of the pit. The lecturer can use green laser pointer with remote control in the back of a lecture hall.
In addition, when the laser welding layer covering the original weld, there will be excessive absorption of the laser beam, resulting in the weldment overheating or blowholes. In order to prevent the above phenomenon, become adjustable power starting and ending points of programming, so that the power of the starting and ending time, namely starting power electronics approach to value set from zero rose to power in a short period of time, and adjust the welding time, and finally in the welding of termination of power by setting the power is gradually reduced to zero value. Laser deep penetration characteristics and the advantages and disadvantages. Laser deep penetration characteristics. High aspect ratio. The technology used by green laser pointer with remote control becomes more and more advanced.
Because the molten metal is formed around a cylindrical high-temperature steam chamber and extends to the workpiece, weld into a deep and narrow. The minimum heat input. Because the temperature is very high, the holes in the melting process happened so fast, input workpiece low heat, heat distortion and heat affected zone is very small. High density. Full of hot steam Kong Youli weld pool stirring and gas to escape, leading to generate stomatal penetration welds. High cooling rate after welding, easy to make the weld miniaturization. Strong weld. Fully absorb the hot heat source and non-metallic components to reduce the impurities to change the mixture of size and its distribution in the weld pool. Welding process without electrode or filler wire to the molten zone contaminated, making the weld strength, toughness is at least equivalent to or even more than the parent metal.