Laser welding focuses a high-powered laser beam onto the joint between two materials; the intense energy melts the metal, which forms a weld as it cools. Because the heat is concentrated into a very small area, the process creates a narrow heat affected zone, reducing distortion and post-weld finishing compared with traditional welding. A handheld laser welder simply lets an operator guide that beam by hand.
How does laser welding work?
Laser welding focuses a high-powered laser beam onto the joint between two materials. The intense energy melts the metal, forming a weld as it cools. Because the heat is concentrated into a very small area, laser welding creates a narrow heat affected zone (HAZ), reducing distortion and post-weld finishing compared with traditional welding methods.
What is fibre laser welding?
Fibre laser welding uses a fibre optic laser source to generate a concentrated beam of light for welding metals. Fibre lasers are efficient, reliable and require relatively low maintenance. They are commonly used in handheld laser welders and automated industrial systems, and are the technology behind most modern handheld machines.
What is a handheld laser welder?
A handheld laser welder allows the operator to manually guide the laser welding head, combining the flexibility of manual welding with the speed and precision of laser technology. Handheld systems are becoming increasingly popular for fabrication, maintenance and stainless steel work, because they bring laser performance to jobs that previously relied on MIG or TIG. Weldability SIF supplies HP Fiber handheld laser welders, with training and a Certified Laser Safety Officer to help workshops adopt the process safely.
What are the advantages of laser welding?
Laser welding offers high welding speeds, low distortion, excellent weld appearance and minimal post-weld cleaning. It is ideal for precision components and thin materials. Additional benefits include reduced heat input, improved productivity and the ability to automate the welding process for consistent, repeatable results.
What is the heat affected zone in laser welding?
The heat affected zone (HAZ) is the area surrounding the weld that experiences elevated temperatures without melting. Laser welding produces a much smaller HAZ than conventional welding methods. A smaller HAZ helps minimise distortion and preserves material properties.
Does laser welding cause less distortion?
Yes. Laser welding generates highly concentrated heat, reducing thermal expansion and contraction compared with MIG or TIG welding. This makes laser welding particularly suitable for thin materials and precision fabrication.
Is laser welding difficult to learn?
Laser welding is generally considered easier to learn than TIG welding because operators do not need to coordinate a separate filler rod and torch. However, training is essential to understand machine settings, safety procedures and correct welding techniques. Proper training helps maximise productivity while ensuring safe operation.
Can laser welding be automated?
Yes. Laser welding is widely used in automated manufacturing because it provides consistent weld quality, high travel speeds and excellent repeatability. Robotic laser welding is common in automotive, aerospace, battery manufacturing and electronics production.
Related reading
- Back to the laser welding hub
- Materials and applications for laser welding
- Laser welding safety and requirements
- Laser welding vs traditional welding
See also our TIG welding and MIG welding knowledge centres.