Laser Weld Applications 2017-08-08T17:11:34+00:00

Laser weld product applications.


There are practically no limits for the possible applications of laser welding. Accordingly, the number of areas in where laser welding systems are used has increased rapidly in the past two decades.

ALPHA LASER develops and manufactures welding equipment for industry and trade. Our laser systems help improving production quality and process reliability considerably. Our objective is to make welding more and more accurate and faster. The good controllability of laser energy even allows welding of materials with high melting points or high conductivity.

Laser Hardening

Laser hardening is particularly used to harden surfaces and peripheral layers. During the laser hardening process, the flexible arm of the robot guides the laser beam with its adjustable focal spot over the surfaces to be hardened. During the process, the integrated temperature control ensures a uniform heat input in the beam geometry. The surface to be hardened is heated very quickly by the focused laser beam to the required transformation temperature and then quenched by the cold volume of the material. Thanks to the very rapid heat input and the almost simultaneous self-quenching, material distortion is minimized significantly. Therefore, depending on the geometry of the work piece, one can speak of laser hardening as a very low-distortion or even a distortion-free heat treatment.

Advantages over usual welding techniques are:

  • Punctual energy input, exactly localized, even in very fine structures
  • Very little or no work piece deformation
  • High mechanical strength of welded seams
  • Slim and flat welding seams, with an oxide-free surface
  • Contactless welding, without effects of mechanical force on the work piece
  • Excellent process control, ensuring a consistent manufacturing quality

Mobile welding opens up countless new applications, because this laser can be used anywhere:
You can simply carry out repairs and material application on large and heavy parts directly at the customer site, for example to repair big machinery wear parts, molds and tools. Also, large injection molding machines can be repaired directly on the spot with very low positioning effort or complete mold halves can be processed as part of regular maintenance works. Therefore, welding with our mobile laser systems is very efficient compared with the conventional welding process, which is not only costly, but also very time consuming due to the required transport of the machine parts to the welding device. With our mobile laser ALFlak, we have considerably expanded the mobile capabilities of welding furthermore: This flexible high end laser is ideal for programmable deposit welding and contour welding on large surfaces, e.g. large machine or design components, injection molding or forming tools.

Precise, fast and without distortion: Laser welding is the best technique to repair or modify forms. Whether work piece damage, wear or a design change – Many companies use the Laser welding systems to edit their forms. The industries are varied: automotive, cell phones, toys, just to name a few. Our laser welding systems with up to 500 W were specifically designed for material application. They are ideal for applying millimeter-thin filler wires homogeneously and crack-free. Only minor finishing is required since the deposit application is similar to the original contour. The laser fusion welding process allows a very fine energy dosing: Only a small volume of material is melted, thus avoiding tension. Consequently, weldings free of cracks are obtained. In most cases previous warming of the material is not essential. The tensile strength of the basis material can be reproduced by using a selection of filler wires. A subsequent heat-treatment is not necessary.

When it comes to the manufacture or repair of particularly filigree and complex design components, the benefits of laser welding systems fully come into effect.

When the contours or dimensions of components have to be changed or when damaged edges or contours have to be repaired, our welding systems help you in saving time and cost-intensive new production.

With laser systems that were specially developed for micro welding, very small objects can be welded and microscopic welds can be produced, for example, inside of thermal sensors.

The use of laser is also increasing for welding of thin sheet metal parts. Sheet metal parts, as well as parts manufactured from stainless steel, Titanium or nickel silver can be welded oxide-free, without penetration and without noticeable distortion on long welding seams. Since the high quality seams resulting from welding alone usually meet the optical requirements finishing work, such as sanding or straightening becomes unnecessary to a large extent.

The Laser machines are very economical, even in the production of small quantities, as the programming is simple and easy to learn.


  • Seams and corner joints on housings
  • Butt-welding of tubes
  • Welding short tubes on smooth sheet metal
  • Rotation seams on turning parts
  • Welding seams on junctures