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    Modelling of the dynamic tool-chip interface in metal cutting

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    Publication date
    2003
    Author
    Qi, Hong Sheng
    Mills, B.
    Keyword
    Machining
    Shear Strain Rate
    Secondary Shear Zone
    Tribo-Layer
    Cutting Interface
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    The formation of tribo-layers during machining is very common phenomena, especially when machining `free machining¿ steels. Several kinds of tribo-layers formed in metal cutting processes have been reported, layers of inclusions from the workpiece, oxide layers due to chemical reaction, plastic deformation layers, material transfer layers (MTLs) or built-up layers (BULs). A new tool¿chip contact model is proposed to explain the tribo-layer phenomena, which considers the nature of the shear strain rate distribution in the secondary deformation zone. A shear strain rate distribution in this zone having a shape similar to that found in the preliminary zone is proposed. A cutting interface (CI) is defined and this interface is at different location to the material boundary of tool and chip (MBTC). This difference is a key factor in the formation of the tribo-layer in the secondary deformation zone. This model can be used in improving tool wear prediction and the estimation of tool life.
    URI
    http://hdl.handle.net/10454/4081
    Version
    No full-text available in the repository
    Citation
    Qi, H. and Mills, B. (2003). Modelling of the dynamic tool-chip interface in metal cutting. Journal of Materials Processing Technology. Vol. 138, No. 1-3, pp. 201-207.
    Link to publisher’s version
    http://dx.doi.org/10.1016/S0924-0136(03)00072-4
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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