This situation of green laser pointer will be more obvious

This situation of green laser pointer will be more obvious
At present, Germany's Volkswagen in the Audi A6, Audi A4, Golf and Passat and other roof using this technology, the BMW 5 Series, Opel Vectra models, and the Swedish Volvo models production of laser welding is a rush . In China, Shanghai Volkswagen has been used in many models of laser technology to weld the roof and side wall outer plate, such as the Passat, Touran, etc.; Shanghai GM new Regal, LaCrosse platform application of laser welding technology. Figure 1 is the new Regal Shanghai GM's roof and side wall of the welding device used in the of 4kW pump laser, weld identification, tracking systems and real-time monitoring of weld quality systems are all integrated in the laser welding head. The lead time of  green laser pointer would be no less than one or two days.
It uses a tungsten electrode and the plasma gas to generate the arc. Plasma arc welding arc more concentrated relative to the protection of the gas tungsten arc welding, plasma arc welding of horizontal control is particularly important, this technology require a higher mechanical systems. More stable because of its current, tungsten inert gas shielded arc welding, deep welding, welding speed faster. It can welding the tungsten inert gas shielded arc welding of almost all metals, the only welding magnesium. Automatic welding of stainless steel is an important application of plasma arc welding. A variant of the process is plasma cutting for steel cutting. Submerged Arc Welding (Submerged Arc welding, SAW), is a high efficiency of the welding process. The meeting is to discuss the quality problem of  green laser pointer .
With the birth of a new generation of lasers, the laser's life span can reach 50000h, which greatly reduces the cost of the use of laser welding equipment. However, in order to obtain the desired quality of welding, gas protection is essential, which also caused the increase in processing costs; laser welding depth to width ratio is less than the electron beam welding, is generally less than 10:1 (in the gear laser welding the weld depth of 4 to 6 mm, and therefore this aspect is still relatively applicable), not suitable for the welding of large thickness of the workpiece; laser welding of aluminum alloy and other high-reflectivity materials welding there are still some technical difficulties, we must filler wire and other auxiliary means, in order to achieve better welding effect.  green laser pointer can be used by the customer to point to the star.