42results about How to "Solve key technical problems" patented technology

The invention discloses a purification method in the production of high-purity quartz sand applied to the raw materials of quartz glass. Through effectively eliminating hydroxyl group and gaseous-liquid inclusion in a natural quartz, the raw material of the quartz glass hyphen, the high-purity quartz sand produced by a common vein quartz, is realized, thereby achieving the effective control to key quality indexes such as air bubbles and air lines in a quartz glass product, and breaking the high dependency to the quality of an ore in the prior process art, so that the availability of vein quartz resources in a quartz glass industry is improved to above 80 percent from about 5 percent; the content of the high-purity quartz sand SiO2 produced by the common vein quartz ore reaches above 99.99percent; and the total amount of the foreign impurities of thirteen metallic elements is less than 25 to 30 ppm.

The invention relates to a seamless steel tube, in particular to a molybdenum-base rare earth powder metallurgy forming plug used by a high nickel-chromium stainless steel seamless pipe and a manufacturing method thereof. The manufacturing method of the molybdenum-base rare earth powder metallurgy forming plug comprises the following steps of: simultaneously mixing four rare earth oxides of ZrO2,Y2O3, La2O3 and SC2O3 in pure molybdenum powder; mixing molybdenum-base material to prepare powder by using an ultrasound characteristic; packaging the powder into a vane mixing blender, dispersing mixed molybdenum-base rare earth powder by primary refining; dispersing homogenized molybdenum-base rare earth powder by ultrasound refining through an ultrasound transducer; screening by a 180-mesh equalizing screen in accordance with a configured Tyler standard in a 'vibrating screen classifier' to obtain screen under flow, namely blended qualified molybdenum-base rare earth powder; and manufacturing the molybdenum plug by an isostaticmoulding mold, demolding and cleaning, and finishing the manufacturing in a configured hydrogen atmosphere roaster, a hydrogen atmosphere pre-sintering furnace and a hydrogen atmosphere horizontal intermediate frequency furnace. The molybdenum-base rare earth powder metallurgy forming plug and the manufacturing method thereof can be widely applied to chemical industry, metallurgy, machinery, aviation, national defense and other industrial departments.

The invention discloses a method for extracting parameters from acoustoelectric effect underground detector measurement data. The method for extracting parameters from the acoustoelectric effect underground detector measurement data comprises the following steps of calculating an energy ratio of an intrinsic wave and an accompany converted wave at every predetermined depth of a plurality of predetermined depths, performing normalization processing on the energy ratios of the intrinsic waves and the accompany converted waves and obtaining a first normalization ratio curve which changes along with depth within a target well section range; calculating an energy ratio of an interface converted wave and an intrinsic wave at every predetermined depth of a plurality of predetermined depths, performing normalization processing on the energy ratios between the interface converted waves and the intrinsic waves and obtaining a second normalization ratio curve which changes along with depth within a target well section range; simultaneously solving a coupled acoustic-electromagnetic coefficient curve according to the first normalization ratio curve and the second normalization ratio curve; evaluating the in-place permeability according to the coupled acoustic-electromagnetic coefficient curve in combination with log data. The method for extracting parameters from the acoustoelectric effect underground detector measurement data solves the problem that majority logging method cannot directly evaluate the in-place permeability.

The invention relates to a magnetic brick with electromagnetic shielding and decoration functions and its preparation method which comprises charging the mixture of hydroxyethyl methacrylate and triethylene glycol dimethylacrylate mixed by the mass ratio of 10 : (50-1), water-soluble macromolecular material, dispersing agent, initiating agent into deionized water, mixing to prepare monomer solution, then charging soft magnetic ferrite powder into the prepared monomer solution, mixing to obtain suspension system, then pouring the suspension system into molding dies, heating, thermal insulating, demoulding, drying, thus obtaining ceramic tile plain blanks, then glazing and stamping on the blanks, finally thermal insulating 3-4 hours at 1200-1400 deg. C.

The invention relates to a method for precise positioning and installation of a converter support ring and a furnace shell. The position of the support point of the converter support ring is accurately determined, and the combined mounting bracket is used to reduce the center of gravity of the equipment to improve the stability of the installation process, and at the same time ensure the positioning accuracy. Point positioning pins make the converter support ring accurately positioned on the support ring support, use the center line of the converter to adjust the center position of the converter mouth, and improve the positioning accuracy with the oxygen lance mouth of the vaporization flue and the center of the oxygen lance. This method avoids the excessive deviation of the positioning pin hole of the bearing seat of the converter support ring, and effectively solves the key technical problems in the precise positioning and installation of the converter support ring and the furnace shell.

The invention discloses an anisotropic additive manufacturing method and its B titanium alloy additive material, comprising the following steps: step S1, taking B powder and titanium alloy powder, wherein the mass ratio of B powder is 0.01- 0.2%, wherein the particle size of B powder is 20-100 μm, and the particle size of titanium alloy powder is 30-200 μm; Step S2, mix B powder and titanium alloy powder evenly, and dry in a vacuum environment; Step S3, use laser The material manufacturing device performs laser cladding forming on the mixed powder dried in step 2 under a protective atmosphere to obtain a formed sample. The titanium alloy prepared by the method can eliminate grain boundaries, reduce anisotropy, have excellent comprehensive mechanical properties, and improve the plasticity of titanium alloy products.

The invention discloses a method for improving the firmness of combination of a dye-sensitized cell nanometer fibrous membrane and conductive glass. The method comprises the following steps of: (1) spin coating a thin transition layer on the conductive glass before fiber deposition, wherein the thin transition layer is made of spin-coating liquid which has the same elements and higher viscosity compared with a TiO2 precursor spinning solution; (2) adding a proper amount of surfactant triton to the spin-coating liquid and the spinning solution; and (3) processing sintered TiO2 nanometer fibrous membrane with a TiCl4 aqueous solution. Under the synergic action of the three steps above, the firm combination of the TiO2 nanometer fibrous membrane prepared by an electrostatic spinning technology and an FTO (Fluorine-doped Tin Oxide) conductive glass substrate is realized, a key technical problem of application of the electrostatic spinning technology to preparation of a photoanode of a dye-sensitized solar cell is solved, and performances and stability of a deice are improved.

The invention discloses a car body-in-white welding spot positioning method and device based on robot visual servo. The method comprises the steps that a partial car body image with body-in-white welding spots is collected and stored in a storage unit, and the image is read from the storage unit; the image is preprocessed; edge extraction is performed on the preprocessed image; the position coordinates and radius sizes of the car body-in-white welding spot or circular hole targets in the image are acquired by utilizing random Hough transformation; a target image is intercepted, feature extraction and classification recognition are performed on the target image, and a positioning coordinate is obtained and transmitted to a robot control system. According to the car body-in-white welding spot positioning method and device, quick and automatic recognizing and positioning of a car body-in-white welding spot quality detection robot on the body-in-white welding spots to be detected are achieved, the car body-in-white welding spot quality detection robot can be guided to accurately position the body-in-white welding spots, and the key technical problems are solved for achieving intelligent detection of the car body-in-white welding spot quality detection robot on the welding spot quality on a car industry manufacturing production line.