Laser welding is used primarily for parts where the emphasis is placed on high welding speeds, precise, high quality weld joint without contamination, porosity and with low thermal deformation of the surrounding material. High process speed, stability and easy implementation of automatic welding process and possibility of on-line diagnostics of the weld make from the laser welding favorite method for industrial applications.
- Optimal technology for automation
- Regular smooth weld with low porosity
- High process stability and welding speed
- Low level of heat input and deformations on welded parts
- Possibility of welding conventionally unweldable materials
Laser weld purity
The effectiveness of laser welding is not only in the speed of weld formation. It also has many other benefits. An indisputable advantage is, for example, the purity and shape of the weld. While with other methods the welds have to be subsequently cleaned and ground, with laser technology it is possible to achieve clean weld with a shiny metallic colour. Logically, this result in time savings not only in multiple welding speed, but also in time for subsequent grinding and cleaning. The final appearance of the weld is influenced by a combination of laser optics, power, welding speed and the method of weld protection.
Safety is very important point in the laser world. Laser safety is solved at the design of laser workplace, at the installation and then during the process too. The protection of the laser welding process is subject to the safety standard ČSN 60825.
The second important point is the preparation of parts before the process itself. Laser technology is very accurate, so it requires stable preparation before welding.
Laser welding speed
A key parameter in laser welding is speed. Compared to other welding technologies, this parameter is the most significant. Welding speeds with laser welding range from meters to tens of meters per minute. These parameters ban be used for basic orientation.
2 kW - 2 mm penetration depth - 2 m/min
With increasing power, the laser welding speed or the penetration depth can be increased proportionaly. At thinner materials, the required laser power can be reduced, or the processing speed can be increased.