The key feature of green laser pointer contains the important parameters of green laser pointer

The key feature of green laser pointer contains the important parameters of green laser pointer . Many different types of resistance welding, can be classified according to the form of lap joints and butt resistance welding resistance welding two. Combination of process methods, can be divided into lap resistance welding, spot welding, seam welding and projection welding of three, resistance butt welding and resistance welding are generally two kinds of flash butt welding. Shown in Figure 3, when the laser power density to the metal surface is greater than 1000000W/cm2, the metal surface temperature in a very short period of time (1 / 1000000 ~ 1/100000s) increased to above the boiling point and melting point metal to melting and vaporization, the formation of liquid metal and metal vapor, metal vapor can produce enough pressure to overcome the surface tension of liquid metal and gravity, which arranged part of the liquid metal, the laser irradiation of the pool concave, forming holes. Holes in the bottom of the laser beam to heat the metal liquefaction and vaporization, the resulting metal vapor continues to oppress the Bottom of the liquid metal and make it exclusive to the pool four weeks (or overflow), so that the hole deepened, the process is continuous and proceed, in the liquid metal to form an elongated hole. The payment method of led flash light can use the credit card.
When the laser beam generated in the holes of the metal vapor pressure and liquid metal equilibrium surface tension and gravity, not to deepen the hole to form a stable depth of the hole, which is the hole effect. When the forward movement of the laser beam to form a stable hole is forward movement, the hole in front of the constantly melting and vaporization of metal, molten metal flows to the rear hole, and with the liquid metal surface tension and gravity to close, the formation of solidification weld. Compared with the resistance welding, laser welding have a greater advantage: single-sided welding. Double-sided sheet is generally spot welding, welding flanges need to reserve sufficient, and to both sides of flange welding torch can be achieved. Laser welding of the flange side just welding, the welding can greatly reduce the reserve flange, these materials can make the entire body to reduce weight and make the design more flexible body. Distorted. Compared with spot welding, laser welding of hot deformation zone is very narrow. Because it is a non-contact process, so the mechanical distortion associated with welding and the edge waves in the laser welding does not produce. At the same time, this non-contact feature also eliminates the high frequency of wearing parts and maintenance parts, such as the electrode cap, electrode rods and cables. The green laser pointer has the various and powerful functions.
Welding speed and welding strength. One of the main advantages of laser welding is the welding speed it can reach 5m/min, while producing very little heat distortion, but also for the neighboring metal without mechanical distortion, and the welding of high strength, can greatly improve the body's strength and stiffness.