METHOD FOR PRODUCING A PCD COMPACT
    130.
    发明公开
    METHOD FOR PRODUCING A PCD COMPACT 有权
    用于生产紧凑型PCDS

    公开(公告)号:EP2240265A1

    公开(公告)日:2010-10-20

    申请号:EP09757977.5

    申请日:2009-06-03

    Abstract: 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.

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