A COATED CUTTING MEMBER HAVING A NITRIDE HARDENED SUBSTRATE
    2.
    发明公开
    A COATED CUTTING MEMBER HAVING A NITRIDE HARDENED SUBSTRATE 审中-公开
    与氮化衬底上的涂层切削元

    公开(公告)号:EP1646482A1

    公开(公告)日:2006-04-19

    申请号:EP04744522.6

    申请日:2004-07-08

    摘要: The invention relates to a cutting member (7) for use in a device for shaving hair. The cutting member comprises a steel substrate (15) which is provided with a cutting edge (9). At least a portion of a surface (27) of the substrate including the cutting edge is provided with a protective coating (19) having a hardness which is higher than a~hardness of the steel substrate. According to the invention, the portion of the surface (27) of the substrate (15) provided with the coating (19) is nitride hardened. As a result, the substrate provides an improved mechanical supporting function for the coating. In this manner, the risk that the coating will break as a result of deformations of the substrate, which occur under', the influence of high mechanical loads on the coating and on the cutting edge (9), is considerably limited. Examples of suitable coatings (19) in combination with the nitride (hardened steel substrate (15) are diamond-Like carbon and coatings having a superlattice structure comprising carbon and a metal, e.g. Cr.

    Shaving device with a cutting member having a superlattice coating
    3.
    发明授权
    Shaving device with a cutting member having a superlattice coating 有权
    毛发切割装置与网格被覆切削

    公开(公告)号:EP1531974B1

    公开(公告)日:2008-08-27

    申请号:EP03792536.9

    申请日:2003-07-14

    IPC分类号: B26B21/60

    CPC分类号: B26B21/60

    摘要: The invention relates to a cutting member (7) for use in a device for shaving hair. The cutting member comprises a metal substrate (15) which is provided with a cutting edge (9). At least a portion of the substrate including the cutting edge is provided with a protective coating (19). According to the invention the coating (19) comprises a plurality of stacked pairs (21) of layers, wherein each pair of layers comprises a first layer (23) mainly comprising carbon (C) and a second layer (25) mainly comprising a metal, and wherein each pair of layers has a thickness (TP) between 1 and 10 nm. The second layer preferably comprises Cr, Nb, Mo, Ti, V, or W. As a result, the coating has a superlattice structure which provides the coating with physical properties which are superior to the properties of the individual materials of the layers. In an embodiment wherein the second layer comprises Cr and each pair (21) of layers has a thickness of 1.8 nm, the coating (19) has a hardness that is approximately four times the hardness of Cr and provides a coefficient of friction between the cutting member (7) and the hair to be shaved which is considerably lower than the coefficient of friction which would be obtained without the coating.

    A CUTTING MEMBER HAVING A SUPERLATTICE COATING
    7.
    发明公开
    A CUTTING MEMBER HAVING A SUPERLATTICE COATING 有权
    毛发切割装置与网格被覆切削

    公开(公告)号:EP1531974A1

    公开(公告)日:2005-05-25

    申请号:EP03792536.9

    申请日:2003-07-14

    IPC分类号: B26B21/60

    CPC分类号: B26B21/60

    摘要: The invention relates to a cutting member (7) for use in a device for shaving hair. The cutting member comprises a metal substrate (15) which is provided with a cutting edge (9). At least a portion of the substrate including the cutting edge is provided with a protective coating (19). According to the invention the coating (19) comprises a plurality of stacked pairs (21) of layers, wherein each pair of layers comprises a first layer (23) mainly comprising carbon (C) and a second layer (25) mainly comprising a metal, and wherein each pair of layers has a thickness (TP) between 1 and 10 nm. The second layer preferably comprises Cr, Nb, Mo, Ti, V, or W. As a result, the coating has a superlattice structure which provides the coating with physical properties which are superior to the properties of the individual materials of the layers. In an embodiment wherein the second layer comprises Cr and each pair (21) of layers has a thickness of 1.8 nm, the coating (19) has a hardness that is approximately four times the hardness of Cr and provides a coefficient of friction between the cutting member (7) and the hair to be shaved which is considerably lower than the coefficient of friction which would be obtained without the coating.