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1116results about How to "Consistent thickness" patented technology

Glass steel radar cover single element and forming method thereof

InactiveCN101630774AAdjust and control thicknessFlat surfaceRadiating element housingsRadarSingle element
The invention relates to a glass steel radar cover single element and a forming method thereof. The radar cover single element is a spherical body, the periphery of which is provided with a sewing structure, wherein the spherical body is formed by assembling the inner skin and the outer skin of the glass steel with a foam core layer and the foam core layer is formed by solidifying injected polyurenthane foam glue material. The forming method comprises the following steps of: presetting a fundamental mould, and copying the female mould and the male mould of the glass steel with the same curvature based on the fundamental mould; respectively manufacturing the inner skin and the outer skin of the radar cover single element on the inner surfaces of the female mould and the male mould of the glass steel; and merging the moulds, and forming an inner cavity between the inner skin and the outer skin. The invention is characterized in that the inner skin is provided with a plurality of through holes which enter into the inner cavity; and the inner cavity is filled with polyurenthane foam glue material from the outside to the inside by the through holes and is solidified to be a foam core layer. The method has simple operation, effectively reduces the use waste of polyurenthane foam, has low cost, guarantees the consilient thickness of the inner skin and the outer skin, and can assemble the radar cover with good safety, reliability and wave permeability.
Owner:北京玻钢院复合材料有限公司

Multilayer compound eccentric-wear-preventing continuous sucker rod and manufacturing device and method thereof

The invention relates to a multilayer compound eccentric-wear-preventing continuous sucker rod and a manufacturing device and a manufacturing method thereof. The sucker rod is characterized in that one section or several sections of the external surface of a fiber reinforced resin matrix composite rod body are respectively covered with a thermosetting wear layer; each thermosetting wear layer is made from one of polyurethane, a fluorocarbon coating, modified epoxide resin, vinylester resin, unsaturated polyester and phenolic resin; by adopting a manufacturing technology of multilayer composite winding and pultrusion or weaving and pultrusion, an internal layer of longitudinal fibers, an intertwining layer or a weaving layer and an external layer of longitudinal fibers are formed from interior to exterior in sequence; the manufactured rod body has a continuous length of 0-5000m. The sucker rod has the beneficial effects that the radial strength and the axial compressive strength are enhanced; the corrosion resistance and the eccentric wear resistance of the thermosetting wear layers are improved by 30%; the maximum temperature tolerance of the thermosetting wear layers is up to 190 DEG C; meanwhile, the bonding between an sucker rod body and each thermosetting wear layer is greater in length and quite high in strength, so that the slippage and the layering of an eccentric-wear-preventing layer from the surface of the sucker rod in the normal operation of an oil well are avoided.
Owner:SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD

Preparation method of magnetic fluorescent composite nanospheres

The invention provides a preparation method of magnetic fluorescent composite nanospheres. The preparation method comprises the steps of (1) preparing CdSe quantum dots by taking Na2SO3, selenium powder, cadmium acetate, N-acetylcysteine and deionized water as raw materials; (2) with FeCl3.6H2O sodium acetate anhydrous and ethylene glycol as raw materials, reacting in an autoclave to obtain Fe3O4 nanoparticles; (3) preparing a Fe3O4@SiO2 product by taking the Fe3O4 nanoparticles, tetraethoxysilane, absolute ethyl alcohol, deionized water and ammonium hydroxide as raw materials; and (4) conducting amino modification on the surface of the Fe3O4@SiO2 by utilizing a silane coupling agent KH-550, then loading CdSe onto the surface of the SiO2 through reaction, so as to obtain the final product magnetic fluorescent composite nanospheres. The preparation method has the characteristics that the prepared CdSe quantum dots have excellent water solubility and excellent fluorescent property and are about 3-4nm in diameter; the Fe3O4 nanoparticles are even in particle size and have good dispersity; the Fe3O4@SiO2 nanoparticles have an obvious core-shell structure, shell layers are evenly coated and are consistent in thickness; the magnetic fluorescent composite nanospheres has strong magnetism and excellent fluorescence property and can be used for site-specific drug transportation in a biological body and the fluorescence imaging of the biological body.
Owner:BEIJING UNIV OF CHEM TECH

Preparation method of titanium and titanium alloy surface black protective film for surgical implantation

The invention discloses a preparation method of a titanium and titanium alloy surface black protective film for surgical implantation, comprising the following steps: step 1: carrying out micro-arc oxidation coloring processing on titanium and titanium alloy surface to be processed, in the process, firstly, preparing a micro-arc oxidation electrolysing solution, and then carrying out the micro-arcoxidation coloring processing; and step 2: carrying out subsequent processing on the micro-arc oxidation film, wherein the subsequent processing comprises the following steps: firstly, preparing a mixed solution for hydro-thermal processing, completely dipping the titanium and titanium alloy after micro-arc oxidation shading processing in the mixed solution, carrying out the hydro-thermal processing on the surface by adopting a hydro-thermal method, drying the titanium and titanium alloy under the condition of low temperature when the hydro-thermal processing is completed, and generating a layer of pure black micro-arc oxidation film with uniform and plump surface on the titanium and titanium alloy surface. The invention has simple and convenient operation, economy, high production efficiency, and high bonding strength between a generated ceramic film, i.e. the micro-arc oxidation film and a substrate, and the invention can effectively overcome various defects and deficiencies which exist in the prior coating processing techniques.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH

Special tool for coating face gluing layer on stretching net of surface mount technology (SMT) laser template

The invention relates to a special tool for coating a face gluing layer on a stretching net of a surface mount technology (SMT) laser template. The special tool is characterized in that a main body is formed by a handle and a scraper plate connected with the bottom end of the handle. The width of the bottom end of the scraper plate is equal to the width of the face gluing layer, a baffle is arranged on one side of the scraper plate and is provided with a protruding portion protruding relative to the bottom end of the scraper plate, a glue liquid backflow plate is arranged on one side of the baffle corresponding to the scraper plate, and the width of the glue liquid backflow plate is 1/4-1/3 of that of the bottom end of the scraper plate. The bottom end of the glue liquid backflow plate is connected with the bottom end of the scraper plate, and an included angle of 15-30 degrees is formed between the glue liquid backflow plate and the plate face of the scraper plate. The baffle and the protruding portion of the special tool enable the scraper plate to be located at the position of the gauze face gluing layer, and the width of the bottom end of the scraper plate is the width of the face gluing layer, so that the width of the face gluing layer formed by the tool is consistent. The glue liquid backflow plate enables glue liquid gathering at the bottom end of the scraper plate to flow to the upper portion of the scraper plate along the surface and then flow back to a glue feeding area to enable the thickness of the face gluing layer to be consistent. The special tool has the advantages of removing working procedures of manual bonding of beautiful line adhesive tapes and remarkably improving production efficiency.
Owner:天津光韵达光电科技有限公司

A kind of production method of pickling-reducing steel

InactiveCN102266868AImprove surface quality and labor productivityReduce generationRoll mill control devicesMetal rolling arrangementsMicrostructureReaction curve
The invention relates to a production method for pickling steel with reduced acid and belongs to the technical field of metal rolling. The technical scheme is that: a FeO eutectoid reaction curve in a scale microstructure in the hot rolling process of target steel is formed; a rolling process is controlled, optimized and adjusted according to the FeO eutectoid reaction curve in the scale microstructure in the hot rolling process of the target steel; and the scale microstructure is changed, the generation of Fe2O3 which is difficult to pickle is reduced, the pickling speed is improved in the pickling process, and acid consumption of each ton of steel is reduced to pickle steel with acid. The invention has the advantages that: the scale is well controlled in the hot rolling process, and thesurface quality of a hot rolled strip coil and labor productivity are greatly improved; and the scale microstructure is changed, the generation of Fe2O3 which is difficult to pickle is reduced, the pickling speed is improved by 10 percent in the subsequent pickling process, and the acid consumption of each ton of steel is reduced by 7.5 percent. The pressure of excessive waste acid emission on the environment is greatly lightened, and the method has the advantages of energy conservation, emission reduction and great social benefit.
Owner:HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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