95 results about "Synthetic diamond" patented technology

To provide a grinding tool capable of improving grinding accuracy and a manufacturing method thereof. [Solution] The grinding tool 1 comprises a plurality of diamond abrasive grains 2 made of synthetic diamond, and a substrate 3 to which the plurality of diamond abrasive grains 2 are fixed. The plurality of diamond abrasive grains 2 are fixed in a single layer to the surface 31 of the substrate 3. The surface of each of the plurality of diamond abrasive grains 2 has a plurality of flat surfaces 21 which are crystal faces, and corners 22 connecting the flat surfaces 21. When the grinding tool 1 is used to grind an object to be ground, the portion of the diamond abrasive grains 2 that comes into contact with the object to be ground is defined as the contact portion 11. The grinding tool 1 has more diamond abrasive grains 2 whose contact portions 11 are corners 22 than diamond abrasive grains 2 whose contact portions 11 are flat surfaces 21.

The invention relates to the technical field of artificial diamonds, in particular to an artificial diamond single crystal generation process which comprises the following specific steps: A, mixing and granulating graphite, mother powder and a metal catalyst, and then transferring into a pressing workshop to be pressed into a graphite column; b, pyrophyllite powder and boron nitride powder are mixed and then made into a cylindrical blank, and a cylindrical cavity is machined in the center of the pyrophyllite blank; c, assembling the graphite column, the pyrophyllite cylinder, the plug assembly, the heating assembly and the insulating assembly into a synthetic block; and D, a mechanical arm carries the clamping mechanism to position the synthetic block to the center of a cavity of the cubic press, the surface of the anvil in the equipment is blown and swept, dust particles are removed, then the clamping mechanism is taken back, and the cubic press is started for temperature rising and pressure rising. And more time and energy are consumed.

The invention discloses a method for processing a diamond roller for hob processing, comprising the following steps: processing an annular groove on the inner ring of an annular roller female mold, placing CVD artificial diamond raw materials in the annular groove in sequence, firing a semi-finished diamond roller in the roller female mold by powder metallurgy, taking out the semi-finished diamond roller, and trimming two sides of the use end of the CVD artificial diamond raw materials with a grinding wheel to finally obtain a finished roller; the invention changes the original arrangement method and trimming method of the CVD artificial diamonds, so that the processed diamond roller has a sharp tip ridge, thereby improving the processing efficiency of the diamond roller; the structures on both sides of the tip ridge form a cutting layer structure at the sharp corner of the diamond end, thereby enhancing the wear resistance of the roller; the improved diamond roller has a more reasonable grinding state, so that it has the advantages of high precision, high stability, high wear resistance, etc., and can meet the high-speed and high-efficiency processing requirements of customers.

The invention discloses an artificial diamond cleaning and purifying device, and relates to the technical field of artificial diamond cleaning and purifying, the artificial diamond cleaning and purifying device comprises a machine box, two U-shaped frames and concave strip plates are arranged on the left side and the right side of the machine box, the concave strip plates are respectively fixed on the top surfaces of the two U-shaped frames, the two transverse plates are respectively fixed on the two sides of the inner walls of the two concave strip plates, and the two U-shaped frames and the concave strip plates are arranged on the left side and the right side of the machine box. The threaded rod penetrates through and is rotatably installed in the middle of the sides, close to each other, of the two transverse plates, the inner threaded block is slidably installed on the outer wall of the threaded rod, the inner wall of the inner threaded block is meshed with the inner wall of a threaded groove of the threaded rod, and the outer wall of the inner threaded block is in sliding contact with the inner walls of the two concave strip plates; according to the artificial diamond cleaning device, the two sides of the inner screw block are limited through the rubber mats, and therefore the problem that the artificial diamond cleaning effect is poor due to the fact that the filter cartridge shifts during displacement is solved.

The present invention discloses a synthetic device for synthetic diamonds from life, which includes: a growth chamber, in which a plurality of mutually isolated growth chambers are provided, and a synthetic cavity assembly is provided in each growth chamber; wherein, the synthetic cavity assembly includes a heating assembly and a synthetic assembly, the heating assembly is arranged at the upper and lower ends of the synthetic assembly, the heating assembly includes a heating sheet and a heating electrode, the heating sheet is arranged close to the synthetic assembly, and the heating electrode is arranged on the heating sheet. The present application achieves the purpose of being able to place one seed crystal in each of the multiple growth chambers in a growth chamber, so that multiple seed crystals can be cultivated simultaneously in one growth chamber, thereby realizing the technical effect of improving the cultivation efficiency of synthetic diamonds from life and reducing the cultivation cost, and then solving the problem that in the synthesis process of synthetic diamonds from life in the related art, only one seed crystal can be placed in each diamond growth chamber, so the production efficiency is much lower than that of ordinary cultivated diamonds, resulting in the high manufacturing cost of synthetic diamonds from life.

The invention belongs to the technical field of artificial diamond processing, and relates to a raw material pretreatment device and method applied to an artificial diamond synthesis process, and the method comprises the following steps: selecting graphite powder with the purity not lower than 99.9% as a carbon source main material, screening through a 100-mesh standard sieve, removing coarse particles with the particle size larger than 150 microns and impurities, and collecting screen underflow for later use; meanwhile, metal catalyst powder with the particle size of 5-10 microns is selected, the screened graphite powder is placed in plasma treatment equipment, inert gas is input to drive the graphite boat body to rotate in the furnace, it is ensured that all the surfaces of the biscuit can make continuous and uniform contact with the high-temperature inert gas, and therefore the sintering temperature of the biscuit is increased; the problem of uneven heating caused by the near-heat and far-cold effect in the static oven is fundamentally solved; and the biscuit is uniformly dehydrated and purified in all-dimensional hot air flow, so that insufficient pretreatment caused by local overheating or insufficient temperature is effectively avoided, and the quality stability of a final artificial diamond product is greatly improved.

The artificial diamond synthesis system comprises a workbench, a cubic press is fixedly mounted at the top of the workbench, a cooling box is fixedly connected to one side of the workbench, and a discharging bearing plate is fixedly connected to one end of the cooling box; a clamping device for automatically feeding the synthetic diamond blocks is arranged on one side of the cubic press; a lifting device facilitating better feeding of the clamping device is arranged on the side, corresponding to the feeding port, of the top of the cooling box. And a translation device for pushing the synthetic diamond block to move is arranged in the cooling box, and a cooling device for reducing the temperature of the synthetic diamond block is arranged at the bottom of the cooling box. The problems that the diamond synthesis block is not easy to place and the temperature is high after synthesis are solved, and the synthesis automation of the artificial diamond is improved.

The multifunctional artificial diamond grinding table comprises a grinding wheel grinding structure, a grinding disc grinding structure, a lower box body structure, an upper box body structure and a positioning piece, the upper box body structure is installed above the lower box body structure, the grinding disc grinding structure is installed in the upper box body structure, the grinding wheel grinding structure is installed above the upper box body structure, and the positioning piece is installed on the upper box body structure. Compared with the scheme that only special-shaped grinding or linear grinding can be conducted in the prior art, multifunctional grinding can be achieved. In addition, according to actual requirements, positioning pieces with abutting faces of different angles can be selected and installed on the upper box body structure to assist in grinding.

The invention discloses a crushing and shaping device for artificial diamond machining, and belongs to the technical field of diamond machining. The device comprises a rack, the top of the rack is fixedly connected with a feeding hopper, a roller crushing mechanism is fixedly installed on the inner wall of the rack, a bearing assembly is arranged below the roller crushing mechanism, the two sides of the rack are each fixedly provided with an airflow shaping mechanism, and each airflow shaping mechanism comprises a shaping cover; and feeding ports and discharging ports are formed in the side, close to the rack, of the shaping cover, transferring assemblies are arranged between the two ends of the bearing assembly and the two feeding ports, and the two discharging ports are obliquely arranged towards the roller crushing mechanism. According to the device, a traditional tandem type segmented operation mode is broken through, the roller crushing mechanism and the airflow shaping mechanism are arranged in parallel and level in space, after being crushed once, raw materials can enter a shaping stage through airflow and mechanical guide without being discharged and transferred, and automatic circulation reprocessing is achieved.

The utility model discloses an assembly structure for synthesizing diamonds by a high-temperature and high-pressure method, which relates to the technical field of diamond synthesis and comprises an outer layer structure, a middle layer heating and insulating system, a core reaction layer and a top covering layer which are sequentially arranged from outside to inside, the outer-layer structure comprises a pyrophyllite composite block, a pyrophyllite ring surrounding the outer side of the pyrophyllite composite block and a conductive steel cap fixed to the top, the middle-layer heating and insulating system comprises a heating sleeve embedded into the pyrophyllite composite block, a heating piece is arranged in the heating sleeve, a magnesium oxide insulating sleeve is wrapped in the heating piece, and the outer-layer structure and the middle-layer heating and insulating system are arranged in the heating sleeve. A vertically supported thick zirconium oxide column is arranged below the heating sleeve, the core reaction layer comprises a magnesium oxide crystal bed, a carbon source is placed on the magnesium oxide crystal bed, alloy is distributed around the carbon source, and the top covering layer comprises a thin zirconium oxide column covering the core reaction layer. The problems that in the prior art, obtained seeds with high carbon content grow fast, but the impurity removal capacity is weak, and the quality is poor are solved; the seeds with low carbon content are good in quality but small in size, and the economic benefit is low.

The invention discloses a method for preparing spherical or sphere-like polycrystalline diamond through chemical vapor deposition and a product thereof, and belongs to the technical field of artificial diamonds.The method comprises the steps that 1, a sheet is provided, and nano particles are arranged on the surface of the sheet to serve as nucleation points; (2) taking a sheet with nano particle nucleation points on the surface as a base material, firstly raising the temperature of the base material to 700-1200 DEG C by utilizing a chemical vapor deposition method, then introducing hydrogen and methane into the reaction cavity according to the volume flow ratio of the methane to the hydrogen being (1-7): 100, and depositing to form spherical or sphere-like polycrystalline diamond; and (3) separating the spherical or spheroidic polycrystalline diamond from the surface of the base material treated in the step (2), and further purifying to obtain the product spherical or spheroidic polycrystalline diamond powder. The method provided by the invention has the advantages of precise control of diamond particle size and maintenance of good sphericity, and the obtained spherical or spheroidic polycrystalline diamond is micron-sized, adjustable in size, high in sphericity and good in uniformity.

A microwave plasma chemical vapour deposition (CVD) reactor 1 for manufacturing synthetic diamond material comprises a microwave generator 8, a plasma chamber 2, a microwave coupling configuration 12

The utility model relates to the technical field of product demagnetization, in particular to a demagnetization device, which comprises a shell and a plastic bucket, and is characterized in that the shell comprises a lower shell and an upper shell, the lower shell and the upper shell are fixedly mounted together, a hole groove is formed in the top of the upper shell, a cylinder is inserted into the hole groove, and the plastic bucket is arranged in the hole groove. The outer surface of the cylinder is wound with a demagnetizing coil, and the outer surface of the bottom end of the cylinder is fixedly connected with a limiting ring. The demagnetizing device has the advantages that the demagnetizing coil is wound on the outer surface of the cylinder, the artificial diamond particles are put into the plastic barrel, and the plastic barrel is put into the cylinder and then taken out for demagnetizing, so that even if the plastic barrel is full of the artificial diamond particles, the plastic barrel can be demagnetized after being inserted into the cylinder; all the diamond particles are located in the magnetic field generated by the demagnetizing coil, so that the diamond particles in the plastic barrel can be demagnetized completely, the diamond particles can still be demagnetized completely under the condition that the artificial diamonds are stacked thicker, and the demagnetizing efficiency is improved.

The present invention discloses a method for preparing yellow synthetic diamonds using hair as a carbon source and a nitrogen source, which relates to the technical field of synthetic diamond preparation. The method comprises the following steps: 1) placing the hair in a closed pyrolysis furnace, pyrolyzing it in an oxygen atmosphere at 1250 - 1300 °C, with the ratio of hair to oxygen being 1 g : (1.2 - 1.5) L, to obtain pyrolysis gas; 2) sequentially removing sulfur oxide gas and water vapor from the pyrolysis gas; 3) placing the seed crystal in an MPCVD cavity for the growth of diamond blanks. By controlling the pyrolysis conditions of the hair, the present invention converts the nitrogen and carbon elements in the hair into gaseous products that can be directly used for preparing yellow synthetic diamonds by the MPCVD method. Combining with the specific diamond blank growth process of the present invention, nitrogen elements can be effectively incorporated into the crystal lattice.

The invention belongs to the field of artificial diamonds, and particularly relates to an automatic feeding device for table separation of diamonds. Comprising a shaking table and further comprises a trough communicated with a ball mill, a discharging pipe is arranged at the bottom of the trough and communicated with a pneumatic diaphragm pump, the output end of the pneumatic diaphragm pump is communicated with the shaking table, the pneumatic diaphragm pump is further connected with an air compressor, and a stirring mechanism is arranged on the trough. According to the automatic feeding device for sorting the diamonds through the shaking table, the material groove and the stirring mechanism arranged on the material groove are additionally arranged between an existing spheroidizing machine and the shaking table, uniformity of slurry is guaranteed, conveying of the slurry is completed through the arrangement of the pneumatic diaphragm pump, and therefore it is guaranteed that the feeding speed is controllable, and safety is good; the device is simple in structure, convenient to maintain, high in safety, capable of continuously and automatically running and high in production efficiency.

A microwave plasma reactor 1 for manufacturing synthetic diamond material via chemical vapour deposition (CVD) is disclosed, comprising a microwave generator 8, a plasma chamber 2, a coupling configur

The invention relates to a method for manufacturing a ceramic part from a sample of ceramic powder, comprising: heating said sample to a predetermined minimum temperature, generating and emitting a plurality of acoustic waves by a plurality of acoustic wave generators towards a focusing system, said plurality of acoustic waves together generating a sound intensity Ie at the input of said focusing system, focusing the plurality of acoustic waves in an acoustic focal region within the sample by the focusing system, the focusing system defining a product factor M, the focused plurality of acoustic waves together generating a minimum sound intensity at at least a portion of the acoustic focal region, the minimum sound intensity being at least M x Ie, and combining the minimum heating temperature applied to the sample of ceramic powder sufficient to sinter the ceramic powder in the portion of the acoustic focal region.

The present invention belongs to the technical field of synthetic diamond production and application, and particularly relates to an automatic loading device for diamond blanks. The present invention utilizes a conveyor belt to move graphite columns. This, in conjunction with a sequentially arranged first steel cup mounting mechanism, a second steel cup mounting mechanism, a first white cup mounting mechanism, a second white cup mounting mechanism, a heating tube mounting mechanism, and a pyrophyllite half-block mounting mechanism, along with a graphite column flipping mechanism, effectively achieves automated installation of synthetic diamond column cores, improving work efficiency.

This application relates to the field of interior wall decoration materials, specifically disclosing a crystal diamond coating and its preparation method. The base slurry of the crystal diamond coating comprises the following components: antibacterial emulsion; water; defoamer; ethylene glycol; film-forming aid; bentonite; suspending agent; cellulose; odor-neutralizing multifunctional additive; and thickener. The antibacterial emulsion is a bio-based styrene-acrylic emulsion with antibacterial groups. The crystal diamond coating obtained by this application has strong decorative properties and broad-spectrum antibacterial ability. Furthermore, the antibacterial components are not prone to migration, degradation, or discoloration within the coating, resulting in more durable antibacterial performance. Simultaneously, this crystal diamond coating also possesses excellent formaldehyde removal capabilities, capable of effectively and persistently adsorbing and decomposing indoor formaldehyde under normal temperature, pressure, and light conditions. It is environmentally friendly and can be widely used in various locations with high antibacterial and environmental protection requirements.

The utility model belongs to the field of artificial diamond application equipment, and particularly relates to an artificial diamond electrolytic purification variable-frequency liquid flow regulation and automatic constant temperature device. Comprising an electrolytic cell, the electrolytic cell comprises a first electrolytic cell, a second electrolytic cell and a third electrolytic cell which are sequentially communicated, the first electrolytic cell and the third electrolytic cell are further communicated with an electrolyte adjusting pool, and the first electrolytic cell, the second electrolytic cell, the third electrolytic cell and the electrolyte adjusting pool are in circulating communication. The electrolyte adjusting tank is further communicated with a liquid supplementing tank, a liquid supplementing pump is further arranged between the electrolyte adjusting tank and the liquid supplementing tank, and a heat exchange pipe is further arranged in the electrolyte adjusting tank. Meanwhile, the electrolytic production device is simple in structure and convenient to process, and can be improved and upgraded on the basis of the prior art.

A microwave plasma reactor for manufacturing synthetic diamond material. The microwave plasma reactor comprises a microwave generator configured to generate microwaves, a plasma chamber, a microwave coupling configuration for feeding microwaves from the microwave generator into the plasma chamber, a gas flow system for feeding process gases into the plasma chamber and removing them therefrom, a substrate holder disposed in the plasma chamber and comprising a supporting surface for supporting a substrate on which the synthetic diamond material is to be deposited in use, a first sensor configured to sense interference of emitted infrared radiation from the substrate with reflections from the diamond plasma interface.

The invention relates to the technical field of metallurgical separation, in particular to impurity removal equipment for artificial diamond single crystal production, which comprises a box body, a butterfly valve is rotatably connected to the outer wall of the bottom end of the box body, an air pump is fixedly connected to the outer wall of the box body, and a driving motor is fixedly connected to the outer wall of one end, far away from the air pump, of the box body; a primary impurity removing mechanism is arranged in the box body, a secondary impurity removing mechanism is arranged at the bottom of the primary impurity removing mechanism, and a waste gas filtering mechanism is arranged on the outer wall of the box body. Efficient friction impurity removal and wind tunnel separation of impurities and materials are achieved through the primary impurity removal mechanism, the anti-sinking effect of the materials is achieved through the secondary impurity removal mechanism and an aeration and anti-sinking assembly, the impurities are fully dissolved, waste gas treatment is achieved through the arrangement of the waste gas cleaning mechanism, and the practicability of the equipment is improved through the arrangement of the filter element rapid replacement design; the transparent waste gas filter cartridge can directly observe the state of the rotating fan, timely discover the failure condition of the filter element, and ensure the production reliability.

A microwave plasma reactor for manufacturing synthetic diamond material, the microwave plasma reactor comprising a microwave generator configured to generate microwaves, a plasma chamber, a microwave coupling configuration for feeding microwaves from the microwave generator into the plasma chamber, a gas flow system for feeding process gases into the plasma chamber and removing them therefrom, a substrate holder disposed in the plasma chamber and comprising a supporting surface for supporting a substrate on which the synthetic diamond material is to be deposited in use, a cooling system configured to pass a cooling fluid around the plasma chamber, a first temperature sensor configured to measure a temperature of the cooling fluid at an inlet of the cooling system, a second temperature sensor configured to measure a temperature of the cooling fluid at an outlet of the cooling system, and means for determining a flow rate of the cooling fluid in the cooling system.

This invention provides a method, system, and storage medium for identifying HPHT synthetic diamonds, belonging to the field of gemstone testing technology. By combining X-ray fluorescence spectroscopy, deuterium lamp electroluminescence spectroscopy, and laser photoluminescence spectroscopy, it can distinguish natural diamonds from HPHT synthetic diamonds, improving the accuracy of HPHT synthetic diamond identification. Furthermore, this identification method, based on the optical defect characteristics of HPHT synthetic diamonds, provides a fast and effective systematic detection process, enhancing the authority and technological advancement of testing institutions and safeguarding the sustainable development of the diamond-related industry.

A microwave plasma reactor 1 for manufacturing synthetic diamond material via chemical vapour deposition (CVD) is disclosed, comprising a microwave generator 8, a plasma chamber 2, a coupling configur

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 an artificial diamond synthetic raw material modification treatment device which comprises an annular heating bin, a plurality of electric heating wires are distributed in the inner wall of the annular heating bin in an annular array mode, and the left end and the right end of each electric heating wire are both electrically assembled and fixedly connected with electric heating ring seats. Positioning ring seats are fixedly embedded in the inner sides of the electric heating ring seats, the positioning ring seats are symmetrically erected in the left-right direction, clamping seats are embedded in the centers of the opposite sides of the positioning ring seats in a butt joint mode, and a plurality of limiting clamping plates are fixedly arranged on the opposite sides of the clamping seats in an annular array mode; the left and right opposite sides of the limiting clamping plate are correspondingly embedded into the inner wall of the positioning ring base and are fixedly clamped with the positioning ring base, and a driving motor and a shaft sleeve are rotationally matched with the left and right sides of the center of the opposite side of the clamping base correspondingly; the mixed raw materials are uniformly mixed and the heating temperature of the mixed raw materials is kept uniform and stable while the mixed raw materials are comprehensively heated at constant temperature.

The invention relates to the technical field of artificial diamonds, and discloses an artificial diamond preparation device and a preparation method thereof.The artificial diamond preparation device comprises a workbench and a mixing barrel arranged above the workbench, a driving motor is installed at the lower end of the mixing barrel, an output shaft of the driving motor rotationally penetrates through the mixing barrel, and a stirring rod is fixedly installed on the output shaft of the driving motor; the outer wall of the lower portion of the stirring rod is fixedly connected with a plurality of sets of connecting rods, the upper end of each connecting rod is fixedly connected with a screw rod, the driving motor drives the stirring rod to rotate, the stirring rod drives the stirring blades to rotate, and therefore the raw materials are stirred and mixed; therefore, the driving motor rotates to drive the connecting rod and the screw rod to rotate, raw materials can be better and conveniently discharged under the cooperation of the screw rod, particularly, the raw materials on the inner wall of the mixing barrel can be guided and conveyed along the spiral wall of the screw rod in a rotating state, conveying of the mixed raw materials is enhanced, and intervention of workers is reduced.

The invention belongs to the technical field of high-power semiconductor lasers, and discloses a heat sink sheet and a preparation method and application thereof. According to the preparation method provided by the invention, the artificial diamond with very excellent heat-conducting property is used as a substrate material for preparing the heat sink sheet, and the small through holes with specific apertures and specific arrangement intervals are introduced into the artificial diamond; high-temperature reduction treatment, magnetron sputtering tungsten plating treatment, magnetron sputtering copper plating treatment, high-temperature calcination treatment and sectional type hole filling copper electroplating treatment are matched, and high-precision filling of copper on the artificial diamond is achieved through cooperation of all the treatment steps. The obtained diamond / copper composite material has excellent heat-conducting property, electrical conductivity and deformation resistance, the thermal expansion coefficient of the diamond / copper composite material is highly matched with common semiconductor materials such as GaAs, the problems of high-heat-flux heat dissipation and thermal stress failure existing in an existing high-power laser device are effectively solved, and the diamond / copper composite material has very excellent application prospects.

The application discloses a furnace body structure of a synthetic diamond crystal growth equipment, and belongs to the technical field of synthetic diamonds, which comprises a base plate, a top cover arranged on the upper side of the base plate, supporting columns fixedly arranged between the top cover and the base plate, an upper cover arranged between the top cover and the base plate, supporting slide rods fixedly arranged on the outer surface of the upper cover, the supporting slide rods being slidably connected with the supporting columns, and a motor fixedly arranged on the upper end surface of the base plate. The buckle mechanism is arranged, the furnace body is automatically opened, the fixing effect and the stability of the furnace body are enhanced under the action of the fixing assembly and the reinforcing piece, meanwhile, the elastic sealing pieces are additionally arranged on the key joint surfaces, the gaps are filled by pressure self-adapting deformation, the repeated calibration steps required by the traditional multilayer sealing are reduced, under the premise of maintaining high sealing performance, the opening and closing operation steps are reduced to single triggering action, the artificial operation complexity is reduced, and the equipment operation efficiency and the operation stability are simultaneously improved.