Principle of remote welding

Laser welding technology offering great new opportunities.

Remote welding is a laser welding technology offering great new opportunities:

The major difference compared to conventional laser welding is the way the beam is positioned:

The scanner principle is that two mirrors are turning around their axes.
This enables them to project the focal point at the desired position on the product, as is shown in the figure on the left.

Just before the scanner mirrors the beam is being focused.
The focusing can be achieved either by lenses or by mirrors.

Translation of the focusing optics changes the focal length of the laserbeam.

In this way it is possible to reach any position in the area that is indicated in the figure here under.

Why remote welding?

Scanner systems offer unparalleled dynamical behavior: Speeds up to 20 m/s [1200 m/min; 3600 feet/minute].
Conclusion: Minimization of Time Between Welds, and consequently shorter cycle time.

An example:

Conventional spot welding:
Cycle time 30 seconds.
5 seconds actual welding, 25 seconds positioning.

Remote welding:
5 seconds actual welding, less than 6 seconds cycle time.
  
This example shows that remote welding is especially of interest when welding several welds on one product.
Above the dynamical capabilities, the ScanWeld series offer all the advantages of laser welding in general:

· High welding speeds
· Low distortion due to low heat input
· Flexibility
· Welding depth well adjustable
· Overlap welding possible