Influence of Hard Tool Coatings on Process of Stamping

Bostjan Zajec, Bojan Podgornik, Niels Bay, Joze Vizintin

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    Blanking/punching is a process which enables mass production of very demanding products, such as lamellas for electrical engines, generators and similar devices. Tool wear in the blanking/punching process has large influence on the product surface quality as well as on tool life. Improvement of tool life can be achieved by proper selection of tool materials and possible coatings. In mass production the tools are usually made of WC, which however, results in expensive tools and long time of delivery. The aim of the present investigation was to determine the influence of different tool materials and possible hard coatings as alternative tool materials. For this purpose the blanking/punching process was first analyzed by a numerical model and based on the results four different tool materials and three hard coatings were included in the investigation and tested in a model test rig as well as in a real blanking/punching operation. The tool materials included were WC, BRM, ASP and S390. These materials were tested uncoated as well as coated, with the commercial coatings: Balinit B, Balinit Alcrona and Balinit Hardlube, respectively.
    Original languageEnglish
    Title of host publicationProceedings of the 3rd International Conference on Tribology in Manufacturing Processes
    Number of pages326
    Place of PublicationYokohama
    PublisherSUBARU Planning
    Publication date2007
    ISBN (Print)978-4-9903785-0-9
    Publication statusPublished - 2007
    Event3rd International Conference on Tribology in Manufacturing Processes - Yokohama, Japan
    Duration: 24 Sep 200726 Sep 2007
    Conference number: 3


    Conference3rd International Conference on Tribology in Manufacturing Processes


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