HPHT true triaxial Cubic Hydraulic Press is also called a synthetic Cubic Six-sided Diamond Making Machine.

True triaxial Cubic Hydraulic Press-Polycrystalline diamond composite (PDC) is an ultra-hard composite material produced using a six-sided press under high temperature and high pressure conditions. It combines artificial diamond powder, binder, and hard alloy matrix in one firing process. This material combines the high wear resistance of diamonds with the high impact resistance of hard alloys. Drills made from PDC not only significantly extend the life of the drill bit but also markedly improve drilling efficiency. Currently, it is widely used in coalfields, geology, oil, and natural gas fields. For the application of HPHT CUBIC PRESS machines in PDC cutter production.

PDC cutters are produced under high temperature and high pressure. This cubic press machine is applicable to the manufacture of PDC cutters, synthetic gemstones, synthetic diamonds and other superhard materials, providing the high-pressure and high-temperature environment required in the production process.

The first set of true triaxial Cubic Hydraulic Press utilizes high-precision displacement and hydraulic pressure control to load from six directions of the (x/y/z) three axes. Through the control system, it can achieve individual control of the six cylinders for synchronous and asynchronous loading. It can realize confining pressure, eccentric pressure, and eccentric stress loading on the sample. Pressure control accuracy: ±0.05MPa; Controllable range of pressurization and depressurization rates: 0-10MPa/min; The automatic pressure relief control speed is 0.05 to 0.5MPa/s. The fast return speed is approximately 3mm/s. The system is equipped with slow-pressure-increase and slow-pressure-decrease control functions. The pressure regulation accuracy for pressure increase and decrease is 0.01MPa. The slow pressure rise rate is ≤0.002MPa/s; The slow pressure drop rate is ≤0.003MPa/s; The pressure fluctuation during the pressure-holding process is 0.02MPa.

Our Equipment Advantages

• Finite element simulation computer unit force analysis +
  intelligent verification design;
• It adopts a segmented forging process (with
  higher strength) combined with a deposition process;
• Leading the application scenario of large
  cavity press into a new track;
• Long service life, low cost, high output, and better
  benefit-output ratio;
• The overall specific heat treatment process of the hinge beam
  makes its comprehensive mechanical properties more excellent;
• The working cylinder and the hinge beam are integrated into
  one, making the main structure more compact and quieter
  during use;
• The fatigue strength, yield strength, and tensile strength of the
  hinge beam of the new forging press is better, and the high-pressure
  deformation is smaller and more uniform, making the
  press more stable when working in high-temperature and high-pressure environments
  environments
• The design pressure of the host is 110 megapascals. Provide
  quality assurance under pressure conditions of 90 megapascals
  and below, with a warranty period of 5 years. This parameter
  can basically meet the working conditions requirements of
  production processes such as industrial diamond, cultivated
  diamond, and superhard material tool pressing (except for
  special requirements);

True Triaxial Cubic Hydraulic Press — Core Functions & Application Fields

1. Core Equipment Functions

1. True triaxial synchronous ultra-high pressure loading
   Six independent hydraulic rams along X/Y/Z, three orthogonal axes, realize fully separate, synchronized pressure control, generating uniform isotropic ultra-high pressure up to 8–20 GPa inside the synthesis chamber. It precisely simulates the extreme stress environment of the Earth’s mantle and crust, solving the uneven pressure defect of ordinary cubic presses.
2. Integrated high-temperature heating system
   Supports direct/indirect carbon tube heating, temperature range from ambient temperature to 2500°C, with temperature control accuracy ≤±5°C. It creates stable HPHT (High Pressure High Temperature) reaction conditions required for superhard material crystallization and sintering.
3. Closed-loop precision intelligent control
   Computer servo system independently regulates pressure, displacement, and temperature of each axis in real time; high-precision sensors monitor stress, strain, and heating status, with automatic fault alarm and stable pressure holding for long-cycle synthesis.
4. Large uniform synthesis cavity
   Adopts a high-rigidity frame and tungsten carbide anvils, featuring a large effective cavity volume, balanced force bearing, and low anvil wear, supporting mass continuous industrial production and advanced laboratory material research.
5. Multi-condition coupled simulation function
   An optional partial differential stress adjustment module can simulate anisotropic deep geological stress, applicable to rock mechanics, geophysics, and frontier material research besides mass production.

2. Industrial Production Applications (Main Commercial Scenarios)

(1) Superhard Material Manufacturing (Core Application)

• Synthetic diamond series
  Industrial diamond powder, single-crystal diamond, jewelry-grade lab-grown gem diamonds, diamond wire saw blanks.
• PDC / PCD / PCBN cutting blanks
  Polycrystalline Diamond Compact (PDC cutters) for oil & gas drill bits, coal mine roadheaders, tunneling machinery; PCD tool inserts for metal cutting; cubic boron nitride PCBN for hard alloy machining.
• Other superhard products: superabrasives, diamond composite substrates, binder-free ultra-hard polycrystalline materials.

(2) Synthetic Gemstone Production

Lab-grown white diamond, colored diamond, moissanite, and other man-made gemstones for the jewelry industry.

(3) Advanced New Material Synthesis

Synthesize special functional materials under HPHT: superconducting materials, high-density ceramics, magnetic materials, rare-earth functional crystals, and high-pressure insulating materials.

3. Scientific Research & Frontier Laboratory Applications

1. Geological & Earth Science Research
   Simulate high-pressure deep crust/mantle environment, rock deformation, mineral phase transition, hydraulic fracturing, and deep underground stress test for mining and geophysical exploration.
2. National Major Scientific Facilities Matching
   Support high-pressure neutron diffraction and synchrotron radiation in large science platforms (e.g., CSNS China Spallation Neutron Source) for in-situ material microstructure observation under extreme HPHT conditions.
3. New Material R&D Laboratory
   Develop novel ultra-hard, energy storage, and catalytic materials for new energy, aerospace, electronic semiconductor, and biomedical fields.

4. Brief English Version (For Catalog/Product Page)

Functions

This true triaxial cubic hydraulic press adopts six-axis independent synchronous pressurization to build a stable ultra-high pressure & high-temperature reaction environment (up to 20 GPa, 2500°C). Equipped with intelligent closed-loop control, it ensures uniform stress distribution inside the synthesis cavity for stable long-cycle material sintering and crystallization.

Applications

1. Mass production of superhard materials: PDC cutters, synthetic diamond single crystal & polycrystal, cubic boron nitride, diamond wire raw materials;
2. Manufacture of lab-grown jewelry diamonds and synthetic gemstones;
3. R&D of advanced functional materials, superconducting crystals, and high-performance ceramics;
4. Geological mechanics simulation and high-pressure physical research for scientific institutions.