Polycrystalline diamond abrasive elements
    3.
    发明授权
    Polycrystalline diamond abrasive elements 有权
    多晶金刚石磨料元素

    公开(公告)号:US08469121B2

    公开(公告)日:2013-06-25

    申请号:US13216796

    申请日:2011-08-24

    摘要: A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The non-planar interface typically has a cruciform configuration. The polycrystalline diamond has a high wear-resistance, and has a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The region lean in catalysing material extends to a depth of 40 to 90 microns, which is much shallower than in the prior art. Notwithstanding the shallow region lean in catalysing material, the polycrystalline diamond cutters have a wear resistance, impact strength and cutter life comparable to that of prior art cutters, but requiring only 20% of the treatment times of the prior art cutters.

    摘要翻译: 多晶金刚石研磨元件,特别是切割元件,包括沿着非平面界面结合到基底,特别是硬质合金基底的多晶金刚石台。 非平面界面通常具有十字形构造。 多晶金刚石具有高耐磨性,并且具有邻近工作表面的贫乏催化材料的区域和富含催化材料的区域。 在催化材料中倾斜的区域延伸到40至90微米的深度,其比现有技术浅得多。 尽管催化材料的薄弱区域,多晶金刚石切割器具有与现有技术的切割机相当的耐磨性,冲击强度和切割寿命,但仅需要现有技术切割器的20%的处理时间。