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Laser paint removal | TRUMPF

Laser paint removal

A clean surface – this is the basic requirement for successful and durable welding and adhesive connections. However, before joining, components often have paint and functional layers. The laser provides a remedy for this: the non-contact tool frees components of functional layers within seconds. And it does this only in areas where joining is meant to take place, for example, or where the functional layer is no longer needed. Here's how it works: pulses with high peak pulse power evaporate the wafer-thin layers, without affecting the component. Subsequent processes such as joining can then be carried out faster, more homogenously, and are entirely reproducible. The connections are clean and last longer. Joining preparation work using light as a tool can also integrate seamlessly into industrial series production, due to the fact that data can be easily transferred via interfaces. TRUMPF offers a special integration package for uncomplicated laser equipment integration for cleaning and paint removal in robot systems.

What are the benefits of laser paint removal?

Environmentally friendly

Stripping with a laser does not require any additional blasting agents or chemical substances which would prove elaborate and expensive.

Reproducible and precise

The laser enables controlled paint removal, precise down to the micrometer – easy to reproduce and extremely precise.

Non-contact

Laser paint removal represents an almost wear-free technology as no mechanical tool is subjected to wear and tear.

Gentle on the material

While alternative methods to laser cleaning such as sandblasting can damage the surface of the component, the laser operates gently, leaving absolutely no residue.

How does the laser paint removal process work?

Process drawing of the laser paint removal application

Laser paint removal or ablation is a process during which functional layers are selectively removed from a surface using laser radiation (usually pulsed). The absorbing material is heated by laser energy and evaporates or sublimates.

The transparent material is ablated in its solid state. Geometrically defined sections are made accessible for subsequent processes (welding, bonding, screwing, sintering, contacting, etc.).

  1. The laser radiation hits the workpiece surface.

  2. The laser radiation heats the material.

  3. The coating is removed by abrupt evaporation, sublimation or ablation.

  4. The process products are removed using suction.

Typical applications of laser paint removal

Application examples

Cleaning and stripping robot systems

Easy integration of the laser equipment for cleaning and stripping in robot systems.

Battery pack production

Cover plate for the protection of battery cells and electronics: the battery system must be protected against external influences to guarantee its function is long-lasting and high-performance. Surfaces are cleaned and paints are removed to ensure safe sealing and electrical grounding.

Laser paint removal with the TruPulse nano

We have many lasers that are suitable for laser paint removal. For example, the TruPulse nano.

These lasers are suitable for laser paint removal