Development of diamond-hard alloy plate (D-HAP) manufacturing technology on the GY850 multi-punch press and study of the characteristics of experimental batches of samples

  • 1 Technological Institute for Superhard and Novel Carbon Materials, Moscow, Russia
  • 2 Moscow Institute of Physics and Technology (State University), Moscow, Russia


A two-layer, diamond-hard alloy plate (D-HAP) is the cutting element of a drill bit and consists of a layer of polycrystalline diamond compact (PDC) sintered on a superhard alloy (WC-Co) substrate. The entire D-HAP is manufactured using high pressure and high temperature technology. In the FSBI TISNUM the GY850 multi-punch press with a working reaction volume of ≈135 cm3 is used to create high pressure. In one working cycle, sintering takes place from 2 to 12 (depending on the dimension-type) of the D-HAP, consisting of a PDC with grains of 20-10 microns, impregnated with a binder metal and bonded to a hard alloy substrate, forming the working element of
the drill bit.
The report describes the manufacturing process of various amounts of D-HAP in one working cycle and the results of the study of the profiled contact layer (interface) of the diamond layer with the substrate and the presence of defects in this layer.



  1. polycrystalline-diamond-compact-bit
  2. S. Menand, H. Sellami and C. Simon. SPE Drilling & Completion, 2004, V.19, 200487837-PA,
  3. Sergeichev K., Uspekhi Prikladnoi Fiziki. Diamond CVD coatings of cutting tools (review). 2015, V.3, P.324.
  4. Viacheslav Prokhorov, Sergey Perfilov, Andrey Pozdnyakov. Machines, Technologies, Materials. Issue 7/2022, P.241.
  5. Prokhorov V., Pozdnyakov A, Kravchuk K., Morokov E. Machines, Technologies, Materials. Issue 7/2019, P.294.

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