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Aluminium welding

Aluminum welding requires a great deal of expertise, many years of experience and a sure instinct to ensure consistently high quality. In recent years, a wide variety of welding processes have developed solutions to meet the special challenges of this material.

At TM Lasertechnik, we have been focusing primarily on laser and laser hybrid welding in aluminum welding for 20 years. We use welding sources that allow us to control the process very well.

By constantly developing and striving to find answers, we are able to successfully process aluminum alloys that are generally considered to be unweldable to a high quality.

TM Lasertechnik_Aluminium schweißen

State-of-the-art technology

Individually tailored to the project, we weld manually, partially or fully automated (CNC-controlled) using laser or laser hybrid processes.

Highest precision

We perform fine welding in the range down to 0.3 millimeters.

All inclusiv

With us, you get everything from a single source: we are happy to offer finishing work such as turning, milling or grinding on request.

We weld








and many more.

Good to know:

Aluminium as a material

Aluminum is a material that has high strength at low weight / low density. In addition, it reacts with its ambient air, forming a layer of aluminum oxide that protects the material from corrosion, oxygen and many chemicals.

This oxide layer has a melting point of 2050° C, but the aluminum itself melts at only about 660° C.

This is what makes aluminum welding so difficult.

Difficulty in welding

When welding aluminum, the protective layer must first be removed, observing the strictest cleanliness measures. Alternatively, it is broken through with very high energy input during welding.

Due to the different melting temperatures, however, the aluminum component loses its stability on the inside and is in danger of literally melting. The boundary between loss of stability and a weldable melt is very narrow.
Maintaining this balance is our know-how.

Work examples aluminium welding:

TM Lasertechnik_aluminium welding_plates

Aluminium plates

Multiple additively manufactured plates joined together with a wall thickness of only 1 mm.

TM Lasertechnik_aluminium welding_close to the thread

Welding close to the thread

We also weld in close proximity to the thread (here: M4 thread).

Chrome-nickel steel machined in hybrid welding process.

Spot-on energy input

1.4404 chrome-nickel steel: The plastic film of the container is still present despite welding.

Industries for which we weld aluminium:


For example:

  • Welding of battery contacts.
  • Welding of battery cooling elements and many more.


For example:

  • Cylinder heads (combustion chambers) in prototype construction.
  • Transmission housings in prototype construction.
  • Welding of engine parts (crankcases) in small series.


For example:

  • New part production of containers for unmanned space flight.
  • Development and new part production of electronic boxes with a subsequent load up to 20 G.

Energy industry

For example:

  • Coating aluminum with silver to create highly conductive surfaces.
  • Welding of aluminum contacts.

Mechanical engineering

For example:

  • Welding of ventilation pipes.
  • Welding of filter systems.
  • Welding of aluminum structures.

Mold/tool making

For example:

  • Repair welding of molds.
  • Cost-effective design changes of molds instead of new production.