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Laser marking is the process of using lasers to mark an item by altering the colour or depth of the surface.

There are several applications that benefit from this process, but it is mostly used in the labelling of work pieces and materials. There are diverse techniques available at Carrs that can produce many different surface finishes. Techniques such as annealing result in a colour change without material removal due to a local oxidization process caused by heat from the laser source.  As a subset technique of laser marking, Carrs can also laser engrave which is the removal of a layer by layer until a maximum depth of 0.25 mm is achieved (further depths will lead to burnt edges and loss of surface definition).

These lasers can be subclassified into pulsed lasers or continuous wave lasers (CW) depending on their operating mode.

KEY ASPECTS - Laser Marking

  • None to minimal material loss
  • Fully automated process
  • Ability to mark logos and symbols
  • Compatible with common design software
  • Colour change in most materials (including plastics)
  • Ability to serialise products
  • Ability to mark drawings including logos
  • Fast process

KEY ASPECTS - Laser Engraving:

  • Up to 0.25mm engraving depth without loss of surface quality
  • Fully automated process
  • Ability to engrave logos and symbols
  • Compatible with common design software
  • Ability to engrave in reverse and/or inverted (for mould production)
  • Removal of a layer by layer can be a lengthy process (up to 1h)

Why choose Laser Marking or Laser Engraving?

Laser marking is the perfect tool to maintain product traceability and the laser engraving technique is a viable alternative to spark erosion for shallow details.

All techniques used are fully automated to assure maximum accuracy, precision and consistency between products.

Laser marking is also a useful tool against counterfeiting of parts, as the laser treatment gives the product a signature which is exceedingly difficult if not impossible to reproduce faithfully; a useful deterrent against fraudulent (and potentially dangerous) pattern parts, and loss of revenue and reputation.

Sequenced Serial Numbering

These drum assemblies for an automotive company are marked by Carrs with an individual serial number and batch number. Any fault or failure may then be traced back to the production date, series and even the operator who worked on the component.

Marking System Capacity

Even large items such as this cylinder block can be accommodated and the system can mark almost anywhere on the component. The operating window is a full 120mm in diameter, allowing ample scope for detailed information and/or graphics to be engraved on both flat and rounded surfaces.

Marking System Flexibility

The system can be programmed to engrave almost any combination of text, serial numbering, and graphics. It is perfect for applying logos, warning signs and instructions permanently. Laser marking helps project the excellence of your product and also deters copyists.

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