Abstract
In this work, the tribological behaviour of DLC-coated as well as uncoated tools was characterized by tests on a tribometer. Special attention was paid to assess how the failure mechanisms of the films proceed, for example, whether the so-called “eggshell effect” plays a role in the failure of the films. Compared to the uncoated tools, the DLC-coated tools showed a significantly lower friction coefficient to the work piece material stainless steel X5CrNi18-10. As the contact pressure was varied from 215 to 330 N/mm 2, which is comparable to the maximum contact pressure in deep drawing, no damages in form of cracks or flaking were observed. Furthermore, lubricant-free micro deep drawing was performed with DLC-coated tools made of tool steel X153CrMoV12. Though no lubricant was used, the experimentally measured punch force was lower than that from experiments using lubricant with uncoated tools. This indicates that the DLC-coating has a great application potential in micro forming.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
