Surface Integrity in Laser De-coating of Tooling

Muhammad Tajuddin Bin Reduan*, Paul Mativenga

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Laser de-coating technology is a promising method for the selective removal of coatings on cutting tools. When the coating is removed, it is essential to ensure that the surface integrity is not compromised. The laser cleaning process can also be targeted to enhance surface integrity. Among the many different types of coating used on tooling is Diamond-like Carbon (DLC). The coating has excellent performance in terms of a low coefficient of friction. This research investigates the effect of laser de-coating on the surface morphology, composition, residual stress, nano hardness, and surface roughness when removing DLC coating on tungsten carbide substrates to facilitate re-use in a circular economy. The research provides a greater understanding of the effect of laser process parameters in de-coating and on preserving the surface integrity and enabling favorable residual stress. This research is vital in the transition towards optimized remanufacturing of tooling and in enabling circularity.
Original languageEnglish
Pages (from-to)18-23
JournalProcedia CIRP
Publication statusPublished - 2024

Keywords

  • Laser surface cleaning
  • Diamond-like Carbon
  • Surface integrity

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