Multiscale dimensional tolerance specifications established on shrinkage assessment in ceramic micro injection molding

Danilo Quagliotti*, Hans N. Hansen, Guido Tosello

*Corresponding author for this work

    Research output: Contribution to journalConference articleResearchpeer-review

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    Abstract

    Taking advantage of a micro powder injection molding production of a critical functional component in a miniaturized mechanism, a method for the formulation of specification intervals was developed, based on the evaluation of the shrinkage. The synthesis allows to allocate tolerance intervals according to a desired risk of rejecting parts in future evaluations. Such specifications are formulated as a function of the shrinkage, optimizing its impact on different features of size independently of their shapes or dimensions. The method is of general validity for any molding process where the material undergoes a change in dimensions due to a phase transformation.
    Original languageEnglish
    JournalProcedia CIRP
    Volume75
    Pages (from-to)143-148
    ISSN2212-8271
    DOIs
    Publication statusPublished - 2018
    Event15th CIRP Conference on Computer Aided Tolerancing (CIRP CAT 2018) - Milan, Italy
    Duration: 11 Jun 201813 Jun 2018
    Conference number: 15
    http://www.cirpcat2018.polimi.it/

    Conference

    Conference15th CIRP Conference on Computer Aided Tolerancing (CIRP CAT 2018)
    Number15
    Country/TerritoryItaly
    CityMilan
    Period11/06/201813/06/2018
    Internet address

    Keywords

    • Shrinkage
    • Shrinkage uncertainty
    • Tolerance interval formulation

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