10 results about "Synthetic diamond" patented technology

This application belongs to the technical field of synthetic diamond manufacturing equipment, specifically disclosing a pressurizing device for a six-sided press, comprising: a cage, the interior of which is provided with a regular hexahedral pressure chamber, each with a conical positioning countersunk hole on its inner wall; eight secondary anvils forming a regular hexahedral composite, the outer wall of which is provided with a frustum corresponding to the conical positioning countersunk holes; and an octahedral pressure chamber inside the regular hexahedral composite. The conical positioning countersunk holes and the conical surfaces of the frustums cooperate to uniformly decompose the concentrated load applied by the external pressurizing hammer into normal clamping force and radial constraint force. This ensures that under ultra-high pressure conditions of tens of GPa, the secondary anvil can only move centripetally along its axial direction, and cannot undergo radial slippage or torsion. This reduces the risk of stress concentration and anvil breakage caused by anvil surface misalignment, ensuring the geometric stability and reusability of the secondary pressurizing device under extreme conditions.

The utility model discloses a kind of beam cylinder disengaging devices for synthetic diamond of six-face top hydraulic press, it is related to synthetic diamond technical field, the device includes base hinge beam, connecting lug, bolt, jacking assembly, four bolt holes are provided in the bottom of base hinge beam side, the base hinge beam is connected with synthetic equipment hinge beam by bolt and connecting lug, jacking assembly is arranged in the base hinge beam, for the beam cylinder in the jacking of synthetic equipment hinge beam.This utility model is driven by hydraulic pressure mode through jacking assembly, the stable jacking of beam cylinder is realized, the uneven stress problem caused by traditional artificial knocking or prying is avoided, the controllable telescopic motion of piston rod can control jacking degree and speed, reduce secondary damage of beam cylinder and hinge beam, protect equipment core component.

This invention relates to the field of electronic material manufacturing technology, specifically to an annealing method for large-size sapphire single crystals. For large-size sapphire single crystals with a diameter ≥ 6 inches, the steps include: placing the single crystal in a graphite crucible with a high thermal conductivity synthetic diamond buffer layer on its inner wall; performing dynamic pulse cyclic annealing under a mixed protective atmosphere using independent temperature control in both the center and edge zones; during the annealing process, using a non-contact temperature sensing component to acquire the temperature gradient in real time, and calculating the internal thermal stress value of the single crystal in real time using a stress calculation model; when the thermal stress approaches a preset threshold, the system automatically reduces the heating and cooling rate to actively relieve pressure. This invention, through a virtual stress monitoring system and a high thermal conductivity buffer layer, solves the technical problems of localized heat conduction lag and macroscopic stress runaway in large-size crystals, reducing the internal stress of the annealed crystal to below 50 MPa, significantly shortening the annealing cycle and significantly improving the wafer yield.

This invention discloses a large-size, high-grade synthetic diamond synthesis device, relating to the technical field of diamond synthesis equipment. The large-size, high-grade synthetic diamond synthesis device includes a symmetrical ultra-high pressure loading mechanism, a composite pressure-bearing cavity, a temperature control system, a high-purity raw material packaging system, and a safety protection system. The symmetrical ultra-high pressure loading mechanism adopts a six-sided symmetrical hydraulic pressurization structure, including six main pressure heads and edge auxiliary pressure rings. The six main pressure heads and edge auxiliary pressure rings are separate structures, with each main pressure head and pressure ring equipped with an independent servo hydraulic cylinder, forming a two-stage loading of central main pressure from the main pressure head and edge auxiliary pressure from the pressure rings. The main pressure head includes a first hydraulic cylinder, with a base block fixedly connected to the end of the first hydraulic cylinder, and a first pressure block fixedly connected to the center of the head face of the base block. This two-stage loading of central main pressure from the main pressure head and edge auxiliary pressure from the pressure rings improves the accuracy of pressure output and the speed of loading response.

This utility model relates to the field of sorting machine technology, specifically to a raw material sorting machine for synthetic diamonds. It includes a sorting cylinder and a sorting mechanism for sorting the diamond raw materials. The sorting mechanism is located inside the sorting cylinder. A rotating disk is fixed to the lower end of a rotating shaft, and a baffle is provided on the outer side of the rotating disk. Multiple sorting holes are opened on the rotating disk, and a pushing structure is provided between the rotating disk and the baffle to spread the raw materials on the surface of the rotating disk. Beneficial effects: The centrifugal force generated when the rotating disk rotates throws the raw materials on the surface outwards. During this throwing, small particles fall through the sorting holes and are screened below. Large particles accumulate at the bottom of the baffle, and then the pushing structure pushes the accumulated material towards the center of the rotating disk, spreading out and flattening the small particles mixed within the large particles. This increases the screening path for small particles, ensuring thorough sorting and improving sorting efficiency.

The present application relates to the field of diamond synthesis, and discloses a kind of synthetic diamond synthesis device, including six top press machine main body, six top hammer, synthesis bowl, conducting component and raw material synthesis block;The six top press machine main body is the basic support and power compression component of device.This application, by optimizing the structure design of synthesis bowl, realize synthesis cavity full dimension uniform pressure transmission, effectively improve the quality and consistency of synthetic diamond finished product, the inner layer of synthesis bowl uses the high density pyrophyllite sintered body of purity as pressure equalizing and pressure transmission layer, can the pressure transmitted by top hammer evenly, losslessly conduct to spherical pressure equalizing synthesis cavity, ensure that the cavity is balanced in each direction, at the same time, synthesis bowl adopts spherical structure design, with top hammer inner concave arc top pressure surface precision adaptation, further improve the stability of pressure transmission, provide uniform pressure environment for the conversion of graphite to diamond under the action of catalyst, significantly reduce the internal defects of finished diamond, improve product pass rate.

This invention belongs to the field of diamond cleaning technology, specifically a cleaning equipment and impurity removal process applied to the production of synthetic diamonds. It includes a vertical cleaning vessel with a central cathode rod and a circumferential anode ring to create a radial electrolytic field. A jetting suspension assembly is located at the bottom to create a circulating flow field for the diamond particles. The core component is a scanning and vibration unit, which includes a ring-shaped ultrasonic transducer coaxially mounted outside the central cathode rod. The transducer has a scraper ring inside its bore and is driven by a drive mechanism to reciprocate along the Z-axis within the slurry. The process includes feeding and jetting, hydrogen-induced explosion pretreatment, dynamic mechanical-acoustic-electric synergistic cleaning, online bubble flotation, and sedimentation discharge. This invention solves the problems of traditional bottom-mounted ultrasonic cleaning failing to penetrate thick powder layers and electrode scaling. By eliminating cleaning dead zones through flow field suspension and dynamic scanning, it achieves efficient and deep purification of synthetic diamond micropowder.

This invention belongs to the technical field of insulating flame-retardant tape, specifically relating to an insulating flame-retardant tape and its preparation method. The invention utilizes a flame-retardant additive prepared by reacting phytic acid with 3-amino-5-methylpyrazole, triaminopyrimidine, and polyetheramine-2000. This additive is then compounded with magnesium hydroxide, zinc borate, and melamine to prepare a modified flame retardant that generates an expanded char layer during combustion to block heat and oxygen, achieving a flame-retardant effect. An alumina layer is formed on synthetic diamond micropowder, acting as an insulating and thermally conductive additive, improving the insulation, abrasion resistance, and corrosion resistance of the insulating flame-retardant tape. It also assists in uniform heat conduction, preventing localized overheating and combustion. The insulating material is prepared by encapsulating the uniformly dispersed insulating and thermally conductive additive, anisoleyl, and boron nitride ceramic powder in epoxy resin and curing it, thereby enhancing the tape's dielectric breakdown performance. The insulating flame-retardant tape prepared by this invention exhibits excellent insulation and flame-retardant properties and does not contain halogen-based flame retardants. The production process is also environmentally friendly.

This invention relates to a high-temperature and high-pressure preparation method for ultrafine diamond high-density array nucleation, belonging to the field of synthetic diamond technology. The method involves preparing 500-mesh Fe-Ni catalyst powder via gas atomization, mixing it with fine-particle high-purity graphite powder at a mass ratio of 80:20 in a ball mill, ball milling the mixture, and pressing it into a graphite column preform. This preform is then subjected to high-temperature reduction treatment under a hydrogen atmosphere. A secondary cold-pressing process is then performed to refine the preform to a specified size, yielding a high-density graphite core column. This graphite core column is then placed in a six-sided press chamber for high-temperature and high-pressure synthesis, followed by mechanical crushing, electrolytic purification, cleaning, and sieving to obtain ultrafine diamond single crystals with a main particle size ≤30μm. This invention overcomes the technical bottleneck of the traditional HTHP method for preparing ultrafine diamond single crystals, enabling stable batch production of ultrafine diamond single crystals with a main particle size ≤30μm, and significantly increasing the graphite conversion rate to over 50%.