What is laser welding?

What is laser welding?

Laser welding is a welding method that uses a laser to generate high power light that is focused over a small area. Laser welding can be used to join a variety of materials including steel, aluminum, nickel, titanium and even some plastics. Lasers can operate in pulsed or continuous mode. The quality of the seam when using continuous laser radiation is very high and often superior to the mechanical properties of the material being welded, which is related to a change in the structure of the material in the weld area. The choice of mode parameters is dependent on the thickness and type of material to be welded.

Laser welding is considered to be a very suitable solution for the processing of large volumes of material, as well as for those where welding by other methods would be difficult to achieve. The resulting welded joints are characterized by high quality and the process itself is characterized by high speed.

Here are some basic features of laser welding:

1. High energy density. This means that laser welding can penetrate deep into the material and create a strong weld without heating the entire workpiece too much, which will reduce the risk of warping and distortion.  A great advantage over other welding methods for small thickness workpieces.

2. Speed. Lasers can heat and melt the material very quickly, reducing welding time. The advantage of laser welding is the higher productivity compared to other methods, which allows its use for high volume production.

3. Precision. It allows very precise control of the position and magnitude of the weld. The small spot size allows a thin seam of high quality to be obtained without using additional materials for the welding process.

4. Automation. Overall, the application areas of laser welding are numerous.