Laser stripping of CrTiAlN coating to facilitate re-use of cutting tools

M. Sundar*, D. Whitehead, P. Mativenga, L. Li, Y. Shicai, K. Cooke

*Corresponding author for this work

    Research output: Contribution to conferencePaperpeer-review

    Abstract

    This work reports on a technical feasibility and establishment of a process window for decoating of Chromium Titanium Aluminium Nitride (CrTiAlN) coating from steel substrates by laser stripping. CrTiAlN coating has a high hardness and oxidation resistance and finds application in cases such as cutting tools. The motivation for removing such coatings is to facilitate reuse of tooling by enabling regrinding or reshaping before recoating and hence promote sustainable material usage. Laser stripping was performed using an excimer laser. The effect of laser fluence, number of pulses, frequency, scanning speed and beam overlap distance on the decoating performance was investigated in detail. In this work, the effectiveness of the laser stripping process was evaluated in terms of the ability to remove CrTiAlN with minimal damage to the substrate and surface quality. Successful laser removal of CrTiAlN coating without noticeable damage to the steel substrate was demonstrated. In addition, the surface finish after decoating was comparable to that of the uncoated material.

    Original languageEnglish
    Pages232-240
    Number of pages9
    Publication statusPublished - 1 Dec 2008
    EventICALEO 2008 - 27th International Congress on Applications of Lasers and Electro-Optics - Temecula, CA, United States
    Duration: 20 Oct 200823 Oct 2008

    Conference

    ConferenceICALEO 2008 - 27th International Congress on Applications of Lasers and Electro-Optics
    Country/TerritoryUnited States
    CityTemecula, CA
    Period20/10/0823/10/08

    Keywords

    • Chromium Titanium Aluminium Nitride
    • Laser ablation
    • Laser decoating

    Fingerprint

    Dive into the research topics of 'Laser stripping of CrTiAlN coating to facilitate re-use of cutting tools'. Together they form a unique fingerprint.

    Cite this