Laser Welding

High Speed Laser Welding Capabilities
Welding with a laser

Welding with a Laser

Using an intense energy beam of light as its heat source, the laser welding process operates at very high speeds with low heat generation and little or no distortion. Since it requires no filler material, laser welding also reduces costs and naturally lends itself to automation for a stable, repeatable weld process. 

With their well-defined beams, lasers are excellent tools for welding thin materials, performing hermetic welds, or operating in close proximity to heat-sensitive components. Even hard-to-reach areas can be laser welded if a line of sight exists.


  • Ship Building
  • Medical Devices
  • Power Train 
  • HVAC
  • Highway Transportation
  • Fuel Cells
  • Solar Power 
  • Wind Turbines

High-quality welding.

An automated fillet laser weld for high-quality joining of sheet metal components. Preco provides laser welding processes including robotics, tooling and material handling. The process can be used with just about any materials that are commonly welded using conventional welding equipment. However, lasers can also join difficult to bond materials such as high carbon stainless steels and titanium as well as for welding dissimilar materials that otherwise may not be compatible.

Power Train Welding

Hybrid laser welding combines a laser with other heat sources, such as arc welding or induction.  Typically, hybrid welding refers to combining the laser with gas metal arc welding (GMAW, sometimes referred to as MIG or MAG). The intense energy supplied by the laser in combination with the efficient melting of wire by GMAW results in high welding speeds that can bridge significant gaps between joining surfaces. 


  • Steels 
  • High Carbon
    Alloy Steels
  • Cast Irons
  • Aluminum Alloys
  • Nickel-Based Alloys 
  • Titanium 
  • Plastics
  • Dissimilar Metals


  • Automotive
  • Aerospace 
  • Defense 
  • Marine 
  • Medical 
  • Electronics 
  • Oil and Gas
  • Nuclear 


Just some of the advantages of laser welding with a Preco-made machine.

Preco's experienced applications engineering staff can assist improper material selection and joint design. Preco also has the capability to perform metallurgical evaluations and our staff is experienced in destructive and non-destructive techniques (e.g. ultrasound, x-ray, helium leak detection) for assessing weld quality.

  • Minimal heat input, therefore small heat-affected zone (HAZ)
  • Fine-grain structure with excellent weld quality
  • High energy density and high weld speeds
  • Oftentimes no filler material necessary
  • Line of sight access for hard to reach areas

Preco has experience in hybrid and induction-assisted laser welding as well as cold wire feed welding, sometimes necessary if the weld chemistry requires an alteration in order to meet design requirements. More info is available on our laser welding systems, including the SL SeriesST Series, and RT Series. Contact us today to find out if laser welding is an ideal option for your material processing needs.