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METHOD FOR MANUFATURING OF POLYCRYSTALLINE SUPERHARD CUTTER UTILIZING INTERNAL FRAME

  • US 20200130062A1
  • Filed: 08/22/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Application
First Claim
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1. A method for manufacturing a cutter, comprising:

  • placing a can into a press, the can comprising superhard powder, a leaching frame embedded in the superhard powder, and catalyst;

    operating the press to sinter the superhard powder, thereby forming a polycrystalline superhard cutting head; and

    exposing at least a portion of the polycrystalline superhard cutting head and the frame to acid for removing at least a portion of the catalyst from the polycrystalline superhard cutting head,wherein;

    the leaching frame comprises a plurality of branches,each branch has an inner end located adjacent to a front face of the cutting head and an outer end located adjacent to a side of the cutting head, andthe acid tunnels into the polycrystalline superhard cutting head by dissolving the leaching frame.

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