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Spot- and Seam Welding

From Smallest Welding Spots to Continuous Seams

The laser sets minimum welding spots with diameters far below 0.1 mm up to long welding seams in sheet metals with a thickness of some millimeters. The results are small seam geometries at high welding speeds. The used performances typically range from ca. 40 Watt up to some kilowatts. The speed of welding is governed by the laser power, the combination of materials, the geometry, and the type of laser. For example, different wavelengths in the laser mean different degrees of absorption.

Spot welding of copper conductors for electric motors

Spot welding of copper conductors for electric motors

For this application a high number of welds per part have to be realized. With scanner and fiber laser, the laser beam can be positioned from weld to weld within milliseconds. Adjusted scanner movements melt the copper so that broad welding gaps can be bridged. Due to their high absorption into highly reflective materials such as copper, the fiber laser is the right tool for this application. Another advantage of laser welding with the fiber laser is the low heat input due to very short process times. Therefore damaging the isolations because of high temperatures can be avoided.

 

For this application we recommend: FL Series

Spot welding at housings

Spot welding at housings

Smallest welding spots even on large working fields.

 

For this application we recommend: StarPulse, StarFiber, SLS-Series, Manual Welding Lasers

Spot welding at axial circular weld seam

Spot welding at axial circular weld seam

Optimum weld quality due to prime pulse-to-pulse stability < 1 % also coupled with smallest pulse energies.

 

For this application we recommend: StarPulse, StarFiber, Manual Welding Lasers

Laser Welding of Gears and Powertrain Components

Laser Welding of Gears and Powertrain Components

Using lasers, gear components made from high-strength steels can be welded without cracking. The welding of gear components using laser could be established already a long time ago due to its advantages such as low maintenance costs, low distortions at the work piece, high flexibility and simple automation.


For this application we recommend the: DC Series, FL Series

Laser Welding of Air Conditioning Cooling Pipes

Laser Welding of Air Conditioning Cooling Pipes

For welding the aluminum of this air conditioning part, ROFIN fiber lasers are the ideal choice. The shorter 1um wavelength is much better absorbed by high reflective materials such as copper, aluminum or brass, compared to longer wavelengths.

For this application we recommend: FL Series

 

 

Laser Welding of Brake Sensors

Laser Welding of Brake Sensors

The steel of ABS brake sensors is welded with high-power fiber lasers. Besides the brake sensors also various other sensors like pressure sensors, force sensors and air-bag sensors are welded by laser.

 

For this application we recommend: FL Series

Laser Welding of SCR Injectors

Laser Welding of SCR Injectors

To meet the emission standards, the harmful nitrogen oxides are converted into the air components nitrogen, water and carbon dioxide by selective catalytic reduction (SCR method). The selective Catalytic Reduction (SCR) Injectors are welded with ROFIN fiber lasers and are used for AdBlue injection in large diesel engines.

 

For this application we recommend: FL Series

Laser welded heat exchanger tube

Laser welded heat exchanger tube

To produce this component in one process step, a stainless steel strip is coiled up spirally onto an untreated stainless steel pipe and simultaneously welded with the laser. An important aspect of this process is the good accessibility of the weld seam to the laser beam. Besides, the complete weld connection between the rib and the pipe precludes crevice corrosion.

 

For this application we recommend: DC Series, FL Series

Laser Welding of Test Tubes

Laser Welding of Test Tubes

For this application we recommend: DC Series

Further applications

Further applications

No matter if finest spot welds or welds with several kilowatts power - the possibilities and the advantages of the laser beam are manifold.