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    • 3. 发明申请
    • METHOD FOR PRODUCING A PCD COMPACT
    • 生产PCD压缩的方法
    • WO2009147629A1
    • 2009-12-10
    • PCT/IB2009/052344
    • 2009-06-03
    • ELEMENT SIX (PRODUCTION) (PTY) LTDSITHEBE, Humphrey, Samkelo, Lungisani
    • SITHEBE, Humphrey, Samkelo, Lungisani
    • B01J3/06B22F7/06
    • B01J3/065B01J2203/063B01J2203/0655B22F7/062C22C26/00C22C2204/00
    • A method of producing a composite diamond compact comprising a polycrystalline diamond (PCD) compact bonded to a cemented carbide substrate is provided. The method includes the steps of: providing a PCD table, preferably a PCD table with diamond-to-diamond bonding and a porous microstructure in which the pores are empty of second phase material bringing together the PCD table and a cemented carbide substrate in the presence of a bonding agent to form an unbonded assembly; subjecting the unbonded assembly to an initial compaction at a pressure of at least 4.5 GPa and a temperature below the melting point of the bonding agent for a period of at least 150 seconds; and thereafter subjecting the unbonded assembly to a temperature above the melting point of the bonding agent and a pressure of at least 4.5 GPa for a time sufficient for the bonding agent to become molten and bond the PCD table to the substrate to form a composite diamond compact.
    • 提供了一种制造复合金刚石复合体的方法,其包括结合到硬质合金基底的多晶金刚石(PCD)紧固件。 该方法包括以下步骤:提供PCD表,优选具有金刚石 - 金刚石结合的PCD表和多孔微结构,其中孔隙为空的第二相材料,在存在的情况下将PCD台和硬质合金基底聚集在一起 的粘合剂以形成未结合的组件; 使未结合的组件在至少4.5GPa的压力和低于粘合剂的熔点的温度下进行至少150秒的初始压实; 然后使未结合的组件经受高于粘合剂熔点的温度和至少4.5GPa的压力,持续一段时间足以使粘合剂变得熔融并将PCD工作台结合到衬底上以形成复合金刚石致密体 。