146results about How to "Stable manufacturing" patented technology

The invention discloses a method and equipment for preparing high-purity electronic-grade hydrogen chloride from hydrogen-rich hydrogen chloride feed gas. The bid invitation comprises the following steps: (1) removing water through a two-stage deep freezer; (2) further removing water through adsorption of an adsorption tower; (3) rectifying: directly discharging gas-phase materials at the top of the tower, namely hydrogen, carbon dioxide and other non-condensable steam, into an alkali washing section; (4) introducing the material into a light component removal tower for further rectification, directly discharging a gas-phase material at the top of the tower, namely hydrogen chloride gas containing C1 and C2, into an alkali washing section, and circulating a material at the bottom of the tower back to the light component removal tower through a dehydrogenation tower; and (5) introducing the material into a heavy component removal tower for further rectification, directly discharging hydrogen chloride liquid containing chlorine and other high-boiling-point impurities in a tower kettle into an alkali washing section, and extracting a vapor phase at the top of the tower to obtain high-purity electronic-grade hydrogen chloride. According to the method, the load of the adsorption tower is reduced, and the treatment capacity per unit time is increased; the method has the advantages of simple process, low energy consumption, high recovery rate, easiness in stable preparation of high-purity electronic-grade hydrogen chloride, and facilitation of improvement of production scale and yield.

A molding die (C) is provided with: a lower die (LM) including a lower die cavity block (53) and a cartridge block (54) in which a cartridge (54b) is formed; an upper mold (UM) including an upper mold cavity block (64) and a culling block (65) disposed above the cylinder block (54) and capable of lifting independently from the upper mold cavity block (64); a first elastic member (55) that presses the lower mold cavity block (53) to the upper mold (UM); a plurality of support members (63) that are elastically deformable and press the upper mold cavity block (64) and the culling block (65); and a second elastic member (66) capable of pressing the culling block (65) so that the culling block (65) protrudes downward from the lower surface of the upper mold cavity block (64).

The invention discloses a batch type aluminum nitride crystal growth furnace and a growth method. The growth furnace comprises a furnace shell, a heat preservation screen structure, a heating component, a crucible body and the like. The crucible body consists of a crucible cover, a crucible bottom wall, a crucible outer wall, a crucible inner wall and a seed crystal supporting table; the inner wall of the crucible is a polygonal regular prism cylinder with a plurality of small holes distributed in the cylinder wall; the seed crystal supporting table is a polygonal regular prism with a through hole in the center; the seed crystal supporting table, the crucible inner wall and the crucible outer wall are sequentially sleeved on the crucible bottom wall from inside to outside, and the crucible cover covers the tops of the seed crystal supporting table, the crucible inner wall and the crucible outer wall to define a crucible cavity; wherein the crucible cavity is divided into a crystal growth chamber and a raw material accommodating chamber by the crucible inner wall. During crystal growth, a seed crystal is fixed on the outer side surface of the seed crystal supporting table, an aluminum nitride raw material is placed in the raw material accommodating chamber, and the aluminum nitride raw material is decomposed at high temperature to form a gas-phase substance which is transmitted to the surface of the seed crystal through the inner wall of the porous crucible. The design of the crucible body forms a plurality of crystal horizontal growth systems which are circumferentially distributed around the seed crystal supporting table, so that batch type aluminum nitride crystal growth is realized.

The invention relates to the technical field of cigarette manufacturing, and discloses cigarette filter stick forming paper containing bamboo ultrafine powder and a preparation method thereof, the cigarette filter stick forming paper comprises the following raw materials by mass: 40-60 parts of wood pulp cellulose, 0-35 parts of tobacco stem ultrafine powder, 10-30 parts of bamboo ultrafine powder, 20-30 parts of a modified calcium carbonate filler, 12-16 parts of essence and 1-6 parts of a cigarette paper additive; the modified calcium carbonate is obtained by compounding calcium carbonate with zeolite powder and then modifying with glyceryl triacetate. By means of the method, smoke can have the fresh and sweet fragrance of bamboos, the smoke is enriched, the smoke state and the fragrance style are improved, offensive odor and irritation of tobaccos are reduced, and the smoking quality of cigarettes is improved.

The invention discloses a wide-band-gap perovskite solar cell and a preparation method thereof, and belongs to the technical field of new energy, the method comprises the following steps: 1) spin-coating a NiOx solution on a pretreated substrate, and drying to obtain a NiOx hole transport layer; 2) mixing FAI, CsI, PbBr2 and PbI2, dissolving the mixture in a mixed solution of DMF and DMSO, and then adding 4, 5-dicyanoimidazole to obtain a perovskite precursor solution; the NiOx hole transport layer obtained in the step 1) is coated with a perovskite precursor solution through a two-step spin-coating method, and a perovskite layer is obtained after annealing treatment; and 3) successively preparing an electron transport layer and an electrode layer to obtain the wide-band-gap perovskite solar cell. By providing a 4, 5-dicyanoimidazole additive strategy, the strong coordination effect between 4, 5-dicyanoimidazole and iodide ions effectively inhibits the precipitation of iodine, thereby significantly improving the stability of the wide-band-gap solar cell.

The invention relates to the technical field of magnesium ion battery electrode materials, and discloses a silicate positive electrode material of which the chemical formula is MgNi < x > Mn < 1-x > SiO4, x < = 1; a preparation method of a silicate positive electrode material comprises the following steps: S1, ball-milling and mixing a magnesium source, a nickel source, a manganese source, a silicon source and a fluxing agent according to a certain proportion to obtain a Ni-doped precursor; s2, drying the Ni-doped precursor prepared in the step S1; s3, in a protective atmosphere, pre-sintering the Ni-doped precursor subjected to drying treatment in the step S2, and carrying out heat preservation at 300-400 DEG C for 2-3 hours; and heating to 800-1000 DEG C, continuously preserving heat for 6-8 hours, cooling to room temperature, washing and drying to obtain the Ni-doped silicate positive electrode material with the chemical formula of MgNi < x > Mn < 1-x > SiO4, the material is applied to magnesium ion batteries. According to the technical scheme, through doping of nickel, the problems that when an existing MgMnSiO4 material serves as the positive electrode of the magnesium ion battery, the agglomeration phenomenon is serious, the conductivity is poor, and structural distortion and poor cycle performance are caused by manganese ions can be effectively solved.

The invention provides a double-sided efficient CVD continuous coating system and method for a thin metal strip, and relates to the technical field of thin film preparation, the main structure of the coating system is that a positive electrode group and a negative electrode group are arranged between two winding discs, and a thin film deposition area is arranged between the positive electrode group and the negative electrode group; the upper clamping electrode and the lower clamping electrode of each pair of clamping electrodes in the positive electrode group and the negative electrode group are in electric contact with the edges of the upper surface and the lower surface of the metal thin strip; the radio-frequency current source is connected to at least one pair of radio-frequency electrodes which are oppositely arranged on the two sides of the substrate channel, the two CVD precursor spray heads are arranged above and below the substrate channel in the thin film deposition area, and the two anti-deposition protection pieces are arranged on the two sides of the substrate channel between the positive electrode group and the negative electrode group and located between the radio-frequency electrodes. According to the invention, Joule heat generated by stable current provided by the electrified self-heating device of the metal thin strip is used for rapidly reaching the temperature required by coating, so that the utilization rate of precursor particles on the surface of the metal thin strip can be improved, and the coating rate is improved while the film forming quality is improved.

The invention provides a teleoperation radiation-resistant metal mechanical property test sample preparation system, and belongs to the technical field of nuclear industry science, the teleoperation radiation-resistant metal mechanical property test sample preparation system comprises a cutting machine body for preparing and processing all radioactive metal samples, and the preparation system further comprises a purification system installed on the right side of the cutting machine body; the shielding system is mounted on the cutting machine body and the purification system; the cooling system is mounted on the rear side of the purification system; the automatic threading device is mounted on the cutting machine body and is used for providing uninterrupted copper wires for the sample preparation process; and the remote control system is installed at the far end and used for driving the cutting machine body, the purification system, the cooling system and the automatic wire penetrating device and monitoring the operation states of all the systems at the same time. According to the invention, the contradiction between irradiation sample preparation and harm of radioactivity to people and equipment is effectively solved, a radioactive source and an operator as well as the radioactive source and the sample preparation equipment can be isolated, and the operator and the sample preparation equipment are protected from being damaged by radiation.

The invention discloses a preparation method of a crystalline silicon perovskite laminated cell, and belongs to the technical field of solar cells, and the method comprises the following steps: S1, taking a perovskite solar cell as a top cell, taking a crystalline silicon solar cell as a bottom cell, sputtering a composite layer on the crystalline silicon solar cell, and enabling the composite layer to be used for connecting the top cell and the bottom cell in series; s2, preparing a metal oxide modified layer on the composite layer; s3, spin-coating an SAMs hole transport layer on the metal oxide modified layer; by preparing the metal oxide modified layer, the adsorption of the SAMs hole transport layer on the composite layer is promoted, tridentate coordination is formed with the substrate, and the problem of poor wettability of the SAMs material is improved; in addition, the passivation capability and hole selectivity of SAMs can be simultaneously improved through metal oxide modification, favorable energy level alignment is provided between the composite layer and the perovskite absorption layer, and direct contact between the composite layer and the perovskite absorption layer is prevented. According to the method, the preparation of perovskite is more stable, and meanwhile, the photoelectric conversion efficiency of the whole laminated cell is greatly improved.

The invention discloses a method for preparing a potassium manganate solution, and belongs to the technical field of chemistry and chemical engineering. The preparation method comprises the following steps: adding a potassium permanganate solution into an alkaline solution, and stirring and reacting under the irradiation of a light source to obtain a potassium manganate solution; wherein the wavelength of the light source ranges from 365 nm to 560 nm. By accurately controlling the wavelength range of the light source, the specific reaction steps can be more effectively initiated and promoted by light excitation energy, so that the generation efficiency and the yield of potassium manganate are improved. Meanwhile, the selection of the specific wavelength can be beneficial to reducing side reactions and improving the selectivity of the reaction, so that the potassium manganate solution with higher purity is obtained, and the method has economical efficiency, practicability and environmental friendliness. The potassium manganate solution prepared by the method can be used for water treatment process experiments.

The invention provides an anti-ultraviolet aging high-strength and high-modulus PBO (poly (p-phenylene benzobisoxazole)) fiber and a preparation method thereof. The strength of the PBO fiber is 31.6-32.3 cN / dtex. The strength retention rate is greater than or equal to 62.5%, and preferably, the strength retention rate is 62.5-90.5%. The intermittent pre-polymerization process is used for intermittently preparing a pre-polymerized material, starting from a material storage kettle, continuously conveying the material, defoaming, pre-filtering, feeding the material into a final polymerization system, adding an ultraviolet light absorber before the material enters the final polymerization system for blending modification, and then spinning, washing, oiling, drying and densifying to obtain the anti-ultraviolet aging fiber. The PBO spinning solution is high in viscosity and is easy to block equipment and pipelines, so that equipment such as a pre-polymerization kettle, a middle kettle, a defoaming kettle and a double-screw extruder should be compactly arranged in space arrangement. Meanwhile, the reaction time and the reaction temperature need to be strictly controlled, the intrinsic viscosity of materials in each process is guaranteed, the process stability is guaranteed, and the anti-ultraviolet aging fiber can be obtained.

The present invention provides a method for manufacturing a lithium ion battery, which includes (1) selecting a high-purity ethylene carbonate-containing composition containing 90 mass% or more of ethylene carbonate having a total content of formic acid and formate of 500 mass ppm or less, and (2) introducing the selected high-purity ethylene carbonate-containing composition as an electrolyte into a lithium ion battery.

The utility model relates to a coffee machine shell and a coffee machine, and belongs to the field of coffee machines. A coffee machine housing comprises: an outer housing assembly; the inner shell assembly is arranged on the outer shell assembly, a first cavity is defined by the inner wall of the inner shell assembly and the outer shell assembly, and a second cavity is defined by the outer wall of the inner shell assembly and the outer shell assembly; and the connector assembly is arranged on the outer shell assembly. The utility model discloses a coffee machine shell. An inner shell assembly is installed on an outer shell assembly. A first cavity is defined by the inner wall of the inner shell assembly and the outer shell assembly, and a second cavity is defined by the outer wall of the outer shell assembly and the inner shell assembly. By means of the design, the first cavity and the second cavity can be effectively isolated through the inner shell assembly, mixing between different areas is avoided, and dry and wet separation is achieved.

The method for preparing an amorphous silicon thin film according to the present invention includes: placing a substrate in a vacuum chamber; controlling the pressure in the vacuum chamber at a predetermined value and performing surface treatment on the substrate; and introducing silane gas and a rarefied gas into the vacuum chamber, heating the substrate, and depositing an amorphous silicon thin film on the substrate using silane gas ions. This method is characterized by low manufacturing difficulty, simple process, and low cost, while improving the growth rate and uniformity of the thin film, making the manufacturing process more stable and controllable, and resulting in a more uniform, dense, and stable amorphous silicon thin film.

The invention relates to the technical field of integrated circuit component packaging, in particular to a dip welding type copper strip winding type welding column preparation device and method. Comprising a lead wire traction mechanism for leading out a lead wire, a copper strip winding mechanism for winding a copper strip on the lead wire, a segmented placement mechanism for cutting the copper strip wrapped lead wire, a gantry clamping mechanism for grabbing and rotating the copper strip wrapped lead wire, a dip welding mechanism for soldering the tin copper strip wrapped lead wire and a welding column cutting and collecting mechanism for cutting and collecting a welding column, the copper strip winding mechanism comprises a driving motor, a hollow rotating platform is arranged at the output end of the driving motor, a rotating wall plate is arranged on the hollow rotating platform, a copper strip damper for placing a copper strip is arranged at one end of the rotating wall plate, and a guide roller is arranged on the rotating wall plate; the dip welding mechanism comprises a scaling powder heating table, a tin pot heating table and a tin scraping mechanism which are arranged in sequence. The device is simplified, the automation degree is high, the size is small, and batch preparation of the enhanced welding columns can be achieved.

The invention provides a polar group or heterocyclic ring bridged bis (phthalazinone) structure polymer and a preparation method thereof, and relates to the technical field of high polymer material synthesis. According to the polar group or heterocyclic ring bridged bis (phthalazinone) structure polymer, the polar group or heterocyclic ring bridged bis (phthalazinone) structure is introduced, so that the polymer has more excellent heat resistance and good solubility, the glass-transition temperature of the polymer can be up to 405 DEG C, and the polymer can be dissolved in N-methyl pyrrolidone, 1, 1, 2, 3, 4-tetramethyl-3-pyrrolidone, 1, 1, 2, 3-tetramethyl-3-pyrrolidone, 1, 1, 2, 3, 3-tetramethyl-3-pyrrolidone and 1, 1, 2, 3, 3-tetramethyl-3-pyrrolidone. A polar aprotic organic solvent such as 1, 1, 2, 2-tetrachloroethane; besides, the heat resistance and solubility of the polymer can be regulated and controlled by regulating the structures and proportions of the polar group or heterocyclic bridged bis (phthalazinone) structural unit and other structural units, so that the polymer can meet the requirements of more different application scenes. The invention also provides a preparation method of the polymer.

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

The invention belongs to the field of biomedical materials, and provides a preparation method of an ultrasonic response nano composite piezoelectric film, which comprises the following steps: preparation of a KNN nanowire precursor, preparation of a KNN nanowire, preparation of a KNN (at) PDA nanowire, preparation of a PCL / KNN (at) PDA solution and preparation of a PCL / KNN (at) PDA film. According to the preparation method, the piezoelectric film is prepared by using the polycaprolactone and the KNN nanowire which are relatively good in biocompatibility and degradability, so that the risk of a secondary operation is avoided; through the PCL / KNN (at) PDA film, regulation and control of electric energy output by adjusting external ultrasonic pulses are realized; the PDA is modified on the surface of the KNN nanowire, so that the aggregation problem in a PCL matrix is avoided.

The application relates to a manufacturing method of a UAV conformal antenna vertical tail structure and belongs to the field of UAV conformal antenna integrated manufacturing. The method introduces a polymethacrylimide foam core material into the inside of a UAV vertical tail, divides the vertical tail into a left core body and a right core body, lays a radiation plate and glass fiber prepreg on the surface of the left core body and the right core body in sequence, and forms a foam sandwich structure composite vertical tail through autoclave curing forming. The left core body and the right core body are preformed with an antenna mounting groove, a cable groove and an equipment mounting hole, integrated installation of an antenna assembly can be realized, the vertical tail forming process is simplified, the forming efficiency is improved, the cable positioning stability is effectively improved, and electromagnetic performance decline caused by vibration and displacement is reduced.

The utility model discloses a front bumper and upper grille riveting structure which comprises a front bumper body and an upper grille body, bumper sharp corners are arranged at the two ends of the front bumper body, grille sharp corners are arranged at the two ends of the upper grille body, and the bumper sharp corners and the grille sharp corners are arranged oppositely. The bumper sharp corner is provided with a rotatable connecting piece, the grille sharp corner is fixedly provided with a rivet hole inserting piece, the connecting piece and the rivet hole inserting piece are both provided with riveting holes, and the connecting piece and the rivet hole inserting piece are riveted through a rivet. The riveting structure of the front bumper and the upper grating is simple in layout and ingenious in conception, not only can guarantee smooth demolding of two parts, but also can increase the connection strength, adopts the simplest injection molding and riveting process, and plays roles in increasing local strength and preventing local deformation in the structure. According to the structure, a long-term and stable manufacturing process of the product can be realized only by inputting a simple riveting tool, so that the reliability of the product is improved, the manufacturing cost of the product is greatly reduced, and the project expense is reduced.

The invention discloses a toughened modified flame-retardant epoxy resin composition which is prepared by the following steps: S11, performing thermal reaction on 50-90 parts by weight of flame-retardant epoxy resin, 5-20 parts by weight of an epoxy diluent and 10-25 parts by weight of a toughening agent under the action of 0.01-0.5 part by weight of a catalyst to prepare toughened modified flame-retardant epoxy resin A; s12, heating and mixing 0-5 parts of an auxiliary agent, 10-40 parts of a flame retardant, 3-15 parts of a pigment and the toughened modified flame-retardant epoxy resin A, and then adding a chain extender for thermal reaction copolymerization to obtain toughened modified flame-retardant epoxy resin B; s13, mixing 1-10 parts of a latent curing agent and 1-6 parts of an accelerant with the toughening modified flame-retardant epoxy resin B to prepare a toughening modified flame-retardant epoxy resin composition; a composite material product prepared from the toughened modified flame-retardant epoxy resin composition and a fiber reinforcement can meet airworthiness standard requirements such as BMS8-2 Class3 Grade A TYPE 45 and the like, and is suitable for manufacturing of aircraft cargo hold wallboards.

The invention belongs to the technical field of resin-based composite material preparation, and particularly discloses a conductive polyimide composite material and a preparation method thereof. The polyimide film with the metal layer and the thermosetting polyimide prepreg blank are bonded and then co-cured, the metal layer is transferred to the surface of the polyimide composite material from the polyimide film through high temperature and high pressure, high-precision preparation of the thin-metal-layer conductive polyimide composite material is achieved, the method is simple, and the cost is low. And the method is high in manufacturing efficiency, suitable for batch and industrial production, good in application prospect and high in economic value. The preparation process of the metal layer and the curing process of the composite material are fused, preparation of the thin metal layer can be achieved, the prepared surface metal layer is firmly combined with the polyimide composite material, and meanwhile the composite material is endowed with electromagnetic shielding and lightning protection functions through the conductive effect of the metal layer; the method has a wide application prospect in the field of aerospace.

The invention belongs to the technical field of bioengineering, and discloses a preparation method of an engineered exosome with a better treatment effect, and the preparation method comprises the following steps: S1, stimulating mesenchymal stem cells by using 10 [mu] g / mL of polyinosinic acid cytidine monophosphate for 1 h, and removing the polyinosinic acid cytidine monophosphate; s2, introducing a DMEM / F12 culture medium containing 10% of fetal calf serum into the mesenchymal stem cells subjected to stimulation treatment; s3, putting the mesenchymal stem cells into a cell incubator, culturing for 24 hours, and separating and purifying the exosome by adopting a conventional method; according to the invention, stem cells are pretreated by polyinosinic acid cytidine monophosphate, the stem cells are induced to secrete exosomes rich in therapeutic factors, and advanced preparation and purification technologies are combined, so that the engineered exosomes which are stable in quality and have a better therapeutic effect on osteoarthritis are successfully prepared.

The invention relates to a small steamed bun making process, which belongs to the technical field of food making, and makes the made wrappers soft and elastic, fine and smooth in mouthfeel and chewy by accurately controlling the proportion of plain flour, warm water, yeast and baking powder and the fermentation time, temperature and humidity. The optimized wrapper not only can better wrap the stuffing, but also can keep good taste after being steamed, and brings unique taste enjoyment to consumers, in the aspect of stuffing preparation, seasonings such as pork stuffing, scallion and ginger water, salt, sugar, light soy sauce, oyster sauce, sesame oil and white pepper powder are reasonably matched, and the dosage range of the seasonings is strictly controlled, so that the stuffing is rich and delicious in taste, and the taste of the stuffing is greatly improved. And various seasonings are mutually fused and well arranged. The addition of the scallion and ginger water effectively removes fishy smell and enhances aroma, the accurate proportion of the salt, sugar and other seasonings enables the taste to be moderate in saltiness, the light soy sauce and the oyster sauce improve the delicate flavor, the sesame oil increases the aroma, and the white pepper powder increases a slight spicy taste, so that rich taste is created together, and different taste requirements are met.

The invention provides an ultrasonic sensor and a preparation method thereof, an underwater ultrasonic detection system and an application method, a single-mode fiber-multimode fiber-grapefruit type photonic crystal fiber cascade structure is adopted, a PDMS elastomer is locally filled in a photonic crystal fiber, a built-in solid-gas Fabry-Perot interference cavity is formed, an external vibrating membrane is not needed, and the ultrasonic sensor is simple in structure and convenient to operate. Therefore, the structure is simplified, and the manufacturing cost is reduced. By optimizing welding parameters and a PDMS filling and curing process, stable and efficient preparation of the sensor is realized. The design enables the sensor to have high sensitivity and broadband ultrasonic response capability, and PDMS built-in packaging improves environmental durability and measurement stability. The all-fiber passive sensing mode has the advantages of electromagnetic interference resistance, miniaturization and narrow space measurement adaptation, the system is easy and convenient to build, and the system is suitable for ultrasonic detection under complex environments such as underwater and high-temperature environments.

The application discloses a diamond-based boron nitride film and a preparation method thereof, and relates to the technical field of semiconductor epitaxial materials. The preparation method comprises the following steps: sequentially polishing and cleaning and pretreating a single crystal diamond substrate; performing glow discharge cleaning treatment on a cavity, and increasing the temperature in the cavity to a growth temperature; performing glow discharge activation treatment on the surface of the pretreated single crystal diamond substrate; performing auxiliary glow discharge activation treatment on the surface of the single crystal diamond substrate after the glow discharge activation treatment; growing a boron nitride film on the surface of the single crystal diamond substrate after the surface treatment; reducing the growth temperature to room temperature to obtain a diamond-based boron nitride film after the temperature reduction treatment; and performing annealing treatment on the diamond-based boron nitride film after the temperature reduction treatment to obtain a finally prepared diamond-based boron nitride film. The method can simultaneously meet the key requirements of low damage, high nucleation activity and controllable stress release of the interface.

This invention provides a method for manufacturing a phase retardation film, which can suppress stress concentration on the first and second clamps holding the film during the stretching process, and can stably manufacture a phase retardation film with the desired in-plane phase difference. One embodiment of the method for manufacturing a phase retardation film includes a holding process, a stretching process, and a release process. In the holding process, a plurality of first clamps hold the first end of the film with Δn (550) of 0.002~0.009, and a plurality of second clamps hold the second end. The holding area of ​​the film by each of the first and second clamps is 10 cm². 2 ~300cm 2 During the stretching process, the spacing between the multiple first clamps is changed while the multiple first clamps and multiple second clamps are moved to stretch the film at an angle below 180°. During the release process, the film is released from the clamps.

The invention relates to the technical field of processing control, and specifically discloses a control method and system for processing a gallium oxide LDMOSFET device, comprising: step one: detecting an epitaxial layer in an epitaxial growth stage to obtain detection data; step two: calculating and obtaining a detection coefficient based on the detection data; step three: evaluating the thickness of the epitaxial layer based on the detection coefficient, judging whether the thickness of the epitaxial layer is qualified, and generating a thickness evaluation signal; step four: analyzing whether temperature fluctuations have an impact on the growth of the epitaxial layer based on a thickness unqualified signal, and generating an impact evaluation signal; step five: limiting the temperature fluctuation range of a subsequent epitaxial growth stage based on a temperature impact signal. The invention can dynamically adjust the temperature fluctuation range in the epitaxial growth stage, effectively suppress the adverse impact of temperature fluctuations on the uniformity of the thickness of the epitaxial layer, thereby improving the quality of the epitaxial layer and the process stability.

The utility model relates to the technical field of electronic special gas, in particular to an electrolytic bath for preparing nitrogen trifluoride, which comprises an electrolytic bath, a cathode plate support rib is mounted in the electrolytic bath, a plurality of cathode plates are mounted on the inner wall of the cathode plate support rib at equal intervals, a horizontal grating is mounted on the inner wall of the front end of an ionic membrane, and a plurality of cathode plates are mounted on the inner wall of the front end of the ionic membrane. An overflow groove is formed in the upper portion of the inner wall of the electrolytic bath, and overflow observation openings are formed in the two sides of the overflow groove. Through cooperation of the anode plate, the electrolytic bath, the cathode plate, the ionic membrane and the inclined grating, the cathode assembly and the anode plate are completely immersed and suspended in electrolyte, laminar flow of the electrolyte is guaranteed through the horizontal grating at the front end of the ionic membrane, gas entrained in flowing of the electrolyte is isolated, and the stability of the electrolyte is improved. Meanwhile, the precipitation direction of solid impurities in the electrolysis process is controlled, so that the internal structure of the electrolytic bath for producing nitrogen trifluoride through the molten salt electrolysis method is effectively improved, and efficient nitrogen trifluoride production and product purity are achieved.

The invention relates to an aluminum composite material containing metal and / or ceramic and graphite, which is formed by compounding a carbon-graphite material and an aluminum material, has high strength, high heat conductivity coefficient and low thermal expansion coefficient, and can be widely used in industry, and provides a technology for developing the material. The present invention relates to an aluminum composite material containing a metal and / or a ceramic and graphite and a method for producing the composite material, the aluminum composite material containing a metal and / or a ceramic and graphite being obtained by compositing a molded body using a melt of an aluminum metal or an aluminum alloy, a metal and / or ceramic and graphite-containing aluminum composite material which is formed from a material obtained by adding a silica-based binder to the outside of a mixed powder that contains a graphite powder that is not amorphous and a metal powder and / or a ceramic powder, and which has a bending strength of 90 MPa or more. The thermal conductivity in either the XY direction or the Z direction is 240 W / m.K or more, and the thermal expansion coefficient in either the XY direction or the Z direction is 6.0 ppm / K or less.