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192results about How to "Avoid process" patented technology

Production method of multi-stage HDI plate

The invention discloses a production method of a multi-stage HDI plate. The method comprises the following steps: A. laminating a first copper foil layer on a core plate, carrying out multiband to the first copper foil layer so as to form a brown film on a surface of the first copper foil layer; B. using a same group of location holes to simultaneously carry out laser drilling and mechanical drilling to the surface of the first copper foil layer, forming an internal-layer blind hole through the laser drilling and forming a buried hole through the mechanical drilling; C. laminating a second copper foil layer on the surface of the first copper foil layer, carrying out the multiband to the second copper foil layer so as to form the brown film on the surface of the second copper foil layer; D. using the same group of location holes to simultaneously carry out the laser drilling and the mechanical drilling to the surface of the second copper foil layer, forming an outer-layer blind hole on the position of the buried hole through the laser drilling, forming a folded hole with the buried hole and forming a through hole through the mechanical drilling. At present, the blind hole and the buried hole are drilled separated so that the through hole and the blind hole are not matched with each other. According to the method of the invention, the above problem can be solved; processes of internal layer copper deposition, padpower, an internal layer plating hole graph, porefilling electroplating, film stripping, abrasive-belt grinding plate and the like can be reduced; a production period can be substantially shortened and production cost can be saved.
Owner:SHENZHEN SUNTAK MULTILAYER PCB

Nickel-based positive electrode material, and preparation method thereof and battery

The invention relates to a nickel-based positive electrode material, and a preparation method thereof and a battery. The composition of the nickel-based positive electrode material is LiaNibCocMndMeM'fO2-g / 2Fg (M is at least one selected from Ti, Zr, Al, Fe, Cr, Si, and Cu; M' is at least one selected from Mg, Ca, Sr, Ba, and W; a is no smaller than 0.95 and no greater than 1.2; b is no smaller than 0.2 and no greater than 0.9; c is no smaller than 0 and no greater than 0.4; d is no smaller than 0 and no greater than 0.4; e+f is greater than 0.05and no greater than 0.2; and g is greater than 0.02 and no greater than 0. 1). Anions and cations are used in co-doping. With a synergistic effect, nickel-based positive electrode material capacity, structural stability and circulation performance are greatly improved. The preparation method at least comprises the 4 steps that: (1) corresponding raw materials are weighed according to the molar ratio consistent with LiaNibCocMndMeM'fO2-g / 2Fg; (2) the raw materials are subjected to wet grinding; (3) slurry obtained by grinding is dried; and (4) the dried material is subjected to solid-phase synthesis under a temperature of 500-1100 DEG C. With the process, the raw materials can be more uniformly dispersed, and the obtained product has the advantages of high capacity and good circulation performance. The process is simple, and has the advantages of low cost and suitability for large-scale industrialized productions. With the process, problems such as complicated process and acid and alkali pollution of a wet chemical precursor preparation method are avoided. The invention also relates to a battery with the material as an active substance.
Owner:CHINA AUTOMOTIVE BATTERY RES INST CO LTD

Manufacturing process of HDI (High Density Interconnection) board

The invention relates to a manufacturing process of an HDI (High Density Interconnection) board. The manufacturing process comprises the following steps of: A, carrying out browning treatment on a multilayer circuit board so that a browned film is formed on the surface of a copper foil layer, and carrying out laser hole drilling on the surface of the copper foil to form laser blind holes; B, carrying out hole drilling on the multilayer circuit board through a drill bit to form mechanical drill holes; C, carrying out outer-layer copper precipitation on the multilayer circuit board so that copper layers are formed in the laser blind holes and the mechanical drill holes, and carrying out electroplating treatment on the multilayer circuit board, so that the copper coppers in the laser blind holes and the mechanical drill holes are thickened; and D, carrying out outer-layer pattern making on the multilayer circuit board, and carrying out pattern electroplating, outer-layer etching, silk-screen mask soldering and surface treatment to obtain the HDI board as a finished product. Compared with the prior art, the manufacturing process disclosed by the invention has the advantages of avoiding processes, such as outer-layer copper precipitation, board electroplating, outer-layer pattern hole-electroplating, porefilling electroplating, mold stripping, board grinding with an abrasive belt and the like which are adopted after laser hole drilling, greatly shortening production cycle and reducing production cost; meanwhile, according to the manufacturing process disclosed by the invention, because the process of grinding the board with the abrasive belt is not required, size stability of the circuit board is relatively better, and the circuit board cannot deform.
Owner:SHENZHEN SUNTAK MULTILAYER PCB

Hooped steel reinforced concrete beam-column joint of core area U-shaped column

The invention provides a hooped steel reinforced concrete beam-column joint of a core area U-shaped column, which relates to the field of constructional engineering. The hooped steel reinforced concrete beam-column joint of the core area U-shaped column comprises a column type steel flange plate, a column type steel web plate, a column horizontal stiffened steel plate, a column longitudinal bar, a column hoop, a column U-shaped hoop and a column concrete as well as a beam type steel flange plate, a beam type steel web plate, a beam longitudinal bar, a beam hoop and beam concrete; the beam-column joint core area is steel reinforced concrete structure building or structure of the U-shaped hoop. In the joint core area, the original closed hoop is replaced with the U-shaped hoop which is suitable for the structural forms at the beam-column joints of high-rise and super high-rise buildings. According to the invention, a column hoop through hole which is formed on the beam type steel web plate due to the need of enabling the column hoop to penetrate through the beam type steel web plate in the common steel reinforced concrete beam-column joint is avoided; one procedure is reduced in the member manufacturing process; the trouble of first penetrating through the reinforcing steel bar for making the hoop and then carrying out bending molding and segmental welding on the reinforcing steel bar during construction is prevented; and the beam-column joint can be manufactured in advance so that the construction period is shortened and the construction costs are saved.
Owner:中国建筑东北设计研究院有限公司

Simplified industrial method for recovering silicon carbide from mortar generated in cutting process of silicon wafers

The invention relates to a simplified industrial method for recovering silicon carbide from mortar generated in cutting process of silicon wafers. The method comprises the steps of: 1. adding diluent in the cutting mortar for reducing system viscosity; 2. carrying out primary separation on the mortar subjected to viscosity reduction by using a precise filter A, and setting and controlling filtering precision according to the requirement of silicon material wire-electrode cutting on the particle size distribution of a silicon carbide abrasive to obtain a solid component S1; 3. carrying out alkali wash, acid wash and rinse on the solid component S1, drying a wet material to directly obtain high-quality silicon carbide which meets the requirement of the silicon material wire-electrode cutting; 4. carrying out secondary separation on the mortar fluid subjected to the primary separation by using a precise filter B, and controlling the filtering precision to ensure that smallest passing particles which can be retained are below 2mu m so as to obtain a solid substance S2, and then separating clear liquid; and 5. carrying out alkali wash, acid wash and rinse on the solid component S2 obtained after secondary separation, drying a wet material to collect and obtain silicon carbide micropowder which has smaller particle size and can be used in other industrial occasions.
Owner:JIANGSU JIAYU RESOURCE UTILIZATION

Treatment equipment for VOCs (Volatile Organic Chemicals) technological waste gas of packaging and printing industry

The invention belongs to the technical field of air pollution prevention and control equipment, and relates to treatment equipment for VOCs process waste gas in the packaging and printing industry. The exhaust gas containing VOCS enters the adsorption device from the gas collection main pipe, and the treated exhaust gas is discharged through the purification and exhaust pipe; when the adsorption reaches saturation, the system enters the desorption cycle, and the adsorbed VOCs are desorbed by hot air, and desorbed to obtain concentrated VOCs The gas is sent to the first heat exchanger for preheating through the desorption air duct, and then transferred to the oxidation chamber for oxidation. Part of the evacuated purified gas is heated by the second heat exchanger and transferred to the adsorption box for desorption through the second heat exchanger and the desorption hot air pipe, so that the saturated adsorbent can be desorbed and regenerated. The combustion system is installed on the left facade of the oxidation chamber to provide heat for the oxidation chamber. The invention effectively solves the problem of adsorption and reuse of process waste gas discharged from ovens of gravure printing machines and composite machines with large air volume and low VOCs exhaust concentration.
Owner:广东汕樟轻工股份有限公司

Air micro-cavity type fiber hydrophone, manufacturing method of the same, and signal detection method

The invention discloses an air micro-cavity type fiber hydrophone, a manufacturing method of the same, and a signal detection method. The air micro-cavity type fiber hydrophone is formed by a fiber and an air micro-cavity at the end surface of the fiber, wherein the air micro-cavity can be used as a compressible Fabry-Perot cavity for sensing the micro-cavity length or reflected light interferencespectrum change caused by the external pressure so as to realize measurement of sound wave and ultrasonic wave. The manufacturing method of the air micro-cavity type fiber hydrophone is simple, and optically heats the fiber end surface coated with luminous absorption material to realize water vaporization on the fiber end surface and form an air micro-cavity on the fiber end surface, thus avoiding the complicated process, such as fiber Fabry-Perot cavity structure manufacturing and pressure sensitive film welding. Besides, the manufacturing method of the air micro-cavity type fiber hydrophonerealizes accurate on-line control of the cavity length by adjusting the heating laser power, can overcome the problem that a traditional manufacturing method is not enough in the repeatability of device structural parameters, can realize dynamic tuning of the measurement range and the working frequency band on single sensor, and can improve applicability of the sensor.
Owner:JINAN UNIVERSITY

Water-flushing sinking-assisting system and construction technical method thereof

The invention relates to a water-flushing sinking-assisting system. Two water jet pipes and an air pipe are preembedded in a pile body of a precast pile, water inlet ends of the two water jet pipes are connected to a quick joint and then connected to a double-table water pump, and a side wall of the pile body is provided with three outer drainage holes communicated with a pile core; a pile tip isa funnel shaped steel pile tip welded by a steel plate; and the two water jet pipes at the pile tip flush water directly along the pile axial line direction. The invention has the advantages that because the three outer drainage holes with the diameter of 70mm, reserved at the pile body, are communicated with the pile core, the effective length of an inner drainage slurry channel is reduced so asto drain away water and sand; because a water pipe and the air pipe are preembedded in concretes, the pipes are unnecessary to pull out, an internal thread bend elbow of 90 DEG is adopted at a water inlet end and an air inlet end so as to connect the quick joint; and because the quick joint is utilized, the assembly and disassembly are quick, the steps of assembling and disassembling the water pipe and the air pipe are effectively avoided, the operation is simple, the cost is lower, and the pile-sinking efficiency is improved.
Owner:CCCC FIRST HARBOR ENG +1

Corrugated steel web few-main-beam structure

InactiveCN105133486AReduce the amount of concreteReduce the weight of the main beamBridge structural detailsBridge deckBox girder
The invention discloses a corrugated steel web few-main-beam structure which comprises a plurality of corrugated steel web main beams, a concrete prefabricated plate arranged on corrugated steel webs, and a bridge deck pavement layer is laid on the concrete prefabricated plate. According to the corrugated steel web few-main-beam structure, a corrugated steel web combined structure is adopted, the use efficiency of steel and concrete materials is fully developed, the use amount of concrete is reduced, the dead load of the main beams is reduced, energy conservation and environmental friendliness are achieved, and the economic performance is good. Structural key parts of the corrugated steel web main beams and a concrete bridge deck slab are factorized, the concrete bridge deck slab is prefabricated in a factory and can reduce the additional stress caused by shrinkage and creep of the concrete, the product quality is easily ensured, and compared with a cast-in-place mode, the process of demounting and mounting a formwork is omitted, the wet work amount on the field is reduced, the construction period is shortened, and the construction progress is shortened. The smooth passing of the road can be achieved under a bridge in the construction process of the bridge, fast construction can be achieved, the influences on the existing traffic are small, and the social benefits are good. A basis is provided for factory standardized and prefabricated production and field assembly building of a 30 m-50 m corrugated steel web PC box girder bridge, and the application fields are expanded.
Owner:HENAN DAJIAN BRIDGE STEEL STRUCTURE

Gas extraction pipeline continuous and automatic drainage and deslagging device

The invention belongs to the field of gas extraction and relates to a gas extraction pipeline continuous and automatic drainage and deslagging device. The gas extraction pipeline continuous and automatic drainage and deslagging device is composed of a main device tank, a water tank, a gas extraction inlet, a gas negative-pressure extraction port, a condensing system, a pressure regulating system, a control system, a drainage and deslagging system, a water level monitoring system, a water and slag mixer, a pressure monitoring system, a separating plate guide groove and a separating plate, wherein the water tank is arranged inside the main device tank and separated into an upper tank body and a lower tank body by the separating plate; the condensing system can condense steam inside gas and collecting water into the water tank; the water level monitoring system and the pressure monitoring system are connected with a control system so that the control system can control opening and closing of the separating plate as well as pressure regulation of the pressure regulating system; water and slag can be uniformly mixed by the water and slag mixer and then drained via the drainage and deslagging system. The gas extraction pipeline continuous and automatic drainage and deslagging device is stable in system operation, high in interference resistance, convenient to arrange, full in automation and capable of saving manual operation and achieving continuous and efficiency operation.
Owner:HENAN POLYTECHNIC UNIV

Fusion neuron model, neural network structure, training method, reasoning method, storage medium and equipment

The invention relates to an artificial neuron and a neural network, in particular to a fusion neuron model, a neural network structure, an inference method and a training method of the neural networkstructure, a computer readable storage medium and computer equipment. Each synaptic connection weight of the fusion neuron model is any continuous derivable nonlinear function, and linear-to-nonlinearmapping is realized on the synaptic weight. The neural network structure forms a hierarchical structure by taking a fusion neuron model as a basic composition unit, and the reasoning method comprisesthe following steps: substituting input data into a connected nonlinear weight function, calculating a connection weighting result, and summing all weighting results of neurons, and directly transmitting the weighted results to a next-stage neuron; carrying out forward transmission in sequence to finally obtain an identification result. According to the training method, parameters of a neuron model are optimized through a back propagation algorithm and a gradient descent algorithm; and the computer readable storage medium and the computer equipment can realize specific steps of the reasoningmethod and the training method.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI +1

Multifunctional synergistic pharmaceutical composition based on adriamycin and construction method of multifunctional synergistic pharmaceutical composition

The invention relates to a multifunctional synergistic pharmaceutical composition based on adriamycin. According to the pharmaceutical composition, natural hydrophobic small molecules having a conjugated structure are covalently coupled with a polysaccharide skeleton to form an anti-angiogenesis drug, the anti-angiogenesis drug is physically mixed with the conjugated structure-modifying mitochondria damage peptide derivative and adriamycin, and the pharmaceutical composition of a nano size is assembled by virtue of various supramolecular driving forces. The pharmaceutical composition has the advantages of simultaneously regulating a tumor micro environment and tumor cells, reversing the anti-apoptosis characteristics of tumor cells, and maximizing the antitumor effect of the adriamycin. Inaddition, the multifunctional synergistic pharmaceutical composition has the advantages of the adriamycin such as high load, high stability and high targeting. The multifunctional synergistic pharmaceutical composition based on the adriamycin is compatible with corresponding medicinal auxiliary materials to prepare antitumoar drug preparations for injection, oral administration or external use. The multifunctional synergistic pharmaceutical composition is prepared by virtue of a multi-component supramolecular combination construction, so that the operation is simple, and the industrialized production is easy to realize.
Owner:CHINA PHARM UNIV

Manufacturing method of circuit board

InactiveCN108055784AAvoid thickness (tin thickness) deviationIncrease productivityConductive pattern reinforcementElectroless nickelCopper plating
The invention discloses a manufacturing method of a circuit board. According to the method, a positive process is adopted to manufacture an inner-layer circuit and / or an outer-layer circuit. The positive process includes the following steps that: a circuit pattern is formed on a circuit board through a film coating procedure, an exposure procedure and a developing procedure sequentially; copper isplated at the circuit pattern on the circuit board, so that an electroplated copper layer can be formed; electroless nickel treatment is performed, so that a nickel layer can be formed on the surfaceof the electroplated copper layer; and film removal and etching treatment are performed sequentially, the circuit is formed on the circuit board through etching. According to the manufacturing methodof the invention, conventional tin plating performed after copper plating is replaced by the electroless nickel treatment, so that the nickel layer with uniform thickness can be deposited through theelectroless nickel treatment after the copper is plated onto the outer-layer circuit pattern, and therefore, the deviation of protective layer thickness (tin thickness) caused by special pattern distribution can be completely avoided, and the problem of the film clamping of electrolytic tinning during circuit electroplating which is performed on the pattern can be solved, the scrap rate of the circuit board can be decreased, the cost production of the circuit board can be decreased, and the quality of the circuit board can be improved.
Owner:JIANGMEN SUNTAK CIRCUIT TECH +1
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