monitoring accuracy requirements

When the forward movement of the laser beam, the holes form a stable forward movement of the holes in front of the metal melting and gasification, molten metal flows into the small hole behind the, and with the liquid metal surface tension and gravity to bridge solidification the formation of weld. Figure 3 Laser welding schematic and resistance welding, laser welding has more advantages: (1) single-sided welding. It means the size of the dot or picture emitted by the laser head of laser pointer can be changeable in size.
The spot is usually two-sided sheet welding, you need to set aside enough of the welding flange, and the torch can be achieved on both sides of the flanging. Welding, laser welding only flanging side can greatly reduce the set aside of the welding flange, reduction of these materials can reduce the weight of the entire body and the body design more flexible. (2) distortion. And spot welding, laser welding, thermal deformation zone is very narrow. Because it is a non-contact process, spot welding with mechanical distortion and wavy edge in laser welding does not produce. Same time, this non-contact features also eliminates wearing parts and high-frequency maintenance parts, such as the electrode cap, the electrode rod and cable. And if laser pointer can emit various kinds of picture through different kinds of laser head of the laser pointer, the pictures emitted by the laser pointer can be changed in different shapes.
Welding speed and weld strength. One of the main advantages of laser welding is the welding speed can be achieved 5m/min, while producing very little heat distortion, and no mechanical distortions of the neighboring metal and the welding strength can significantly improve the strength and stiffness of the body. (4) has a higher flexibility. Can only be monotonous and welding resistance welding compared to the almost omnipotent, laser welding can weld a continuous weld, intermittent weld can also be welded, in fact, in the computer under the control of welding along any trajectory. Of laser welding technology to the following difficulty: the higher the accuracy of the drawing parts, welded parts and tooling fixture requirements, monitoring accuracy requirements. Actually, the adjustable focus type laser pointer is really popular in the market.