220results about How to "Dense tissue structure" patented technology

The invention discloses a manufacturing method of a multilayer shell-core composite structural part, which comprises the following steps of: (1) respectively preparing feed for injection forming of a core layer, a transition layer and a shell layer, wherein powder in the feed of the core layer and the powder in the feed of the shell layer are selected from one or a mixture of some of metal powder, ceramic powder, or toughened ceramic powder and are different from each other, and the powder in the feed of the transition layer is gradient composite powder; (2) respectively manufacturing blanks of the multilayer shell-core composite structural part layer by layer with a powder injection forming method; (3) degreasing the blanks; and (4) sintering the blanks to obtain the multilayer shell-core composite structural part. The multilayer shell-core composite structural part is manufactured with the powder injection forming method, and has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance, strong binding force between the shell layer and the core layer due to the transition layer, good integral bending strength and good impact toughness and is difficult to crack.

The invention relates to ultrahigh-malleability tunnel supporting anchor pile steel of converter continuous cast billet and a production method, which belongs to the technical field of a mine anchor rod. The anchor rod steel comprises the following components by weight percent: 0.5 to 0.70 percent of carbon, 0.15 to 1.20 percent of silicon, 0.5 to 2.5 percent of manganese, less than or equal to 0.045 percent of phosphorus, less than or equal to 0.045 percent of sulfur, 0 to 1.00 percent of chrome, 0 to 1.00 percent of nickel, 0 to 1.00 percent of molybdenum, 0 to 0.30 percent of copper, 0.03 to 0.40 percent of vanadium, 0.01 to 0.2 percent of aluminum, 0 to 0.10 percent of titanium, 0 to 0.10 percent of boron, 0.001 to 0.0 percent of niobium, 0.004 to 0.020 percent of nitrogen, and iron for the surplus; the yield strength Rel is larger than or equal to 600 MPa, the percentage elongation delta 5 is larger than or equal to 20 percent, the impact strength is 20 DEG C, Akv is larger than or equal to 27 J, and the breaking load is larger than or equal to 300 KN. By adopting the production process flow of converter crude metallurgy, LF furnace fine metallurgy and full protection continuous casting, the steel grade has the advantages that the purity is high, the structure is dense, the grain is fine, the physical chemistry properties of the steel are stable, the over-all mechanical property is good, the production operation and process flow are simple, and the rolled metal finished product can be directly used without heat treatment to the rear part.

The invention relates to the textile technology field, in particular to a terylene super fine denier double-faced short floss textile and a production method thereof; the terylene super fine denier double-faced short floss textile is characterized in that: polyester yarns or poly/nylon composite yarns with 0.42dtex and/or 0.58dtex or lower than the specification of the single-fiber fineness are adopted as felted yarn raw material, polyester FDY or polyester DTY with 55.5dtex-111dtex is used as bottom yarns; the invention further discloses a production method of the terylene super fine denier double-faced short floss textile. The terylene super fine denier double-faced short floss textile in the invention has the advantages that: 1) the textile has super smoothness, the single-fiber fineness reaches 0.42dtex and 0.58dtex, the advanced printing and dyeing process is adopted, so as to ensure the super smoothness, really achieve the purpose that the touch sense is more comfortable than the feeling of touching baby skins and have excellent fitting performance; 2) the textile has strong heat retention, the texture structure is compact and can reach 36 stitches per hour; 3) the textile has super long using cycle, the weaving structure is contact without depilation and balling-up, and the anti-tearing strength is high.

The invention relates to a high-adsorption nanofiber composite filter material which comprises a non-woven base material and a nanofiber membrane applied to the surface of the non-woven base material, wherein nanofibers forming the nanofiber membrane comprise continuous-phase thermoplastic polymers and disperse-phase active nanoparticles. A preparation process of the composite filter material comprises the steps of performing double-screw extruding and granulating on the active nanoparticles and the thermoplastic polymers according to a ratio to prepare a composite material; mixing the composite material with cellulose acetate butyrate according to a ratio, performing melt spinning, and performing solvent extraction to prepare thermoplastic nanofibers containing the active nanoparticles; finally, coating the surface of the non-woven base material with ethanol suspension of the thermoplastic nanofibers, and drying to obtain the high-adsorption nanofiber composite filter material. The preparation process is simple, the cost is low, the energy consumption is low, and the yield is high. The thermoplastic nanofibers containing the active nanoparticles are dense in tissue structure and controllable in diameter. The composite filter material has the characteristics of stable structural performance and excellent adsorption filtration performance.

The invention relates to a preparation method of a molybdenum alloy electrode material doped with nano rare oxides. According to the preparation method, molybdenum powder is used as a raw material, the molybdenum powder and nano rare oxide powder are uniformly mixed by adopting a solid-solid doping method, wherein the nano rare oxides are lanthana oxide, cerium oxide or mixed rare earth oxide; and then the molybdenum alloy electrode material doped with different kinds and contents of nano rare earth oxides is prepared through adopting the processes of sieving, pressing and forming, sintering,forging and vacuum annealing heat treatment under certain temperature. The preparation method disclosed by the invention and the heat treatment process are simple and feasible; and the molybdenum alloy electrode material doped with the nano rare earth oxides, which is prepared by using the method disclosed by the invention, has the characteristics of uniform tissues, high compactness, high strength, high recrystallization temperature, high elongation rate, favorable deep processing performance, and the like.

The invention discloses a functional duck meat square leg and a preparation method of the functional duck meat square leg. The method comprises the steps of: slaughtering the duck, scalding hair, removing internal organs, cleaning, taking breast meat and leg meat, coating a mixture of nitrate, sodium isoascorbate and composite phosphate to pickle, adding a medlar juice and a walnut and lactoprotein mixed enzymatic solution, pig backfat, accessories, and glutamine transaminase and a lactic acid bacteria leavening agent, chopping, agitating and mixing uniformly, injecting in a mold way, preserving temperature and enzymolyzing, freezing and molding, demolding, packaging in vacuum, decocting and curing, sterilizing by microwave, and cooling to obtain the functional duck meat square leg which is rich in extracellular polysaccharide of lactic acid bacteria and polypeptide and amino acids. The method has the advantages that the amount of phosphate is reduced, and the emulsion stability, heat stability, water-retaining property and gel capacity of meat product are improved. The functional duck meat square leg is not only unique in flavor, but also has the functions of preventing oxidation, resisting angiotensin converting enzyme, and promoting calcium absorption and immune adjustment.

The invention discloses a method for preparing a pantograph carbon slide strip material from graphene oxide. The method comprises the following steps: mixing graphene oxide, semi-reinforced carbon black and graphite powder with crushed, milled and screened pitch coke to form aggregate for preparing carbon slide strips; adding a binder to the aggregate, and mixing and kneading the aggregate and the binder to form a paste; carrying out pre-compression molding on the paste; and calcining the pre-compression molded paste to finally obtain the material suitable for pantograph carbon slide strips. The required carbon strip material can be obtained only through one-time calcination, so the production period is short. The pantograph carbon slide strips produced by using the graphene oxide have the advantages of good electricity conduction performance, high heat conduction performance, strong friction and wear resistance, and low cost of raw materials.

The invention relates to a tissue engineering vessel and a preparation method and an application thereof. The tissue engineering vessel uses a tubular gelatin/polycaprolactone electricity texture membrane as a support, and smooth muscle cells are evenly distributed in the support. The preparation method includes: a) spreading disinfected gelatin/polycaprolactone materials in a culture dish; b) collecting umbilical artery smooth muscle cells, evenly inoculating the umbilical artery smooth muscle cells on the surface of the gelatin/polycaprolactone electricity texture membrane to culture over the night, and forming a cell material composite electricity texture membrane; and c) twisting the cell material composite electricity texture membrane on a polyvinyl chloride (PVC) tube for culturing, and finally forming the tubular tissue engineering vessel. Cells of the tissue engineering vessel prepared by the method are evenly distributed, simultaneously the tissue engineering vessel has the advantages of being good in elasticity, moderate in hardness and compact in tissue structure, having smooth inner walls and abundant collagenous fibers, and being clear in self tissue boundary and the like. The characteristics of the tissue engineering vessel are close to that of living body vessels.

The invention belongs to the field of graphite materials, and particularly relates to a raw material composition and method for preparing a special graphite material. The raw material composition is prepared from, by weight, 70-75% of isotropic coke and 5-30% of medium temperature coal-tar pitch, and preferably 70-72% of isotropic coke and 28-30% of medium temperature coal-tar pitch. The method comprises the following steps that the isotropic coke is crushed, screened and blended, medium temperature coal-tar pitch is added for mixing kneading, vibration molding, primary roasting, primary impregnation, secondary roasting and graphitization, and the special graphite material is obtained. The physical and chemical indexes of the prepared special graphite material can compare favourably with other mid-to-high end graphite materials and also can replace the mid-to-high end graphite materials; due to the fact that the raw material sources are wide, the price is low, the preparation process is easier, the technical difficulty is low, the production cost is low, the product performance is high, the quality is good, and the price is lower than other similar or mid-to-high end graphite materials, the raw material composition is very successful in business.

The invention discloses a TC4 titanium alloy multi-channel valve body laser selective area melting forming method. A multi-channel valve body three-dimensional model is established, manufacturabilitycompensation is added, and the size precision and the shape precision are improved; meanwhile, the valve body character and a complex stress and strain environment formed in the valve body in the forming process are aimed, a stress/strain simulation result is utilized, and the forming direction is determined, a specially-made process support is arranged, alleviating the stress concentration phenomenon is optimized, and machining parameters with the minimum stress strain are selected; and then laser scanning path data of each slice layer are obtained by means of slicing software, and laser selective area melting forming is carried out according to the scanning path data; and finally, after the valve body removes floating powder and is subjected to thermal stress treatment, a substrate plateof the valve body is separated, and the problem that the size precision of the forming valve body is low by utilizing the laser selective area melting forming technology is solved.

The invention discloses a method for preparing a composite coating Ni3Al/Cr3C2 by use of a laser cladding technique. The method comprises the following steps: pretreating the surface of a steel material to remove oil contamination and impurities attached on the surface of the steel material; adding Cr3C2 powder to Ni3Al powder and mixing evenly to obtain the mixture of the Ni3Al and the Cr3C2, wherein the content of the Cr3C2 in the mixture is 10wt% to 50wt%; and cladding the mixture on the surface of the steel material by use of the laser cladding technique so that the mixture is formed into the composite coating Ni3Al/Cr3C2 on the surface of the steel material. The composite coating Ni3Al/Cr3C2 obtained by use of the method has remarkable wear-resisting property.

The invention relates to a preparation method of a carbon fiber strengthened aluminum-base-layer-shaped composite board, and aims to solve the condition that the intensities of aluminum and aluminum alloy are low and the tenacity is poor. According to the preparation method, aluminum powder and carbon fiber cloth are heated, fused and combined, vibrated and pressurized so as to manufacture an aluminum base-layer-shaped composite board, the carbon fiber strengthened aluminum base-layer-shaped composite board is manufactured on a heating and vibrating press machine in a heating, pressurizing and vibrating process, so that a nine-layer structure is formed, an aluminum solution is utilized for wetting the carbon fibers under low temperature, pressure and vibration actions, and a fragility compound can not be formed, so that the organization structure is compact, the tensile strength achieves 144MPa, the elongation achieves 21.2%, the process is advanced, the data is full and accurate, the process flow path is short, and the preparation method is an ideal method for preparing the carbon fiber strengthened aluminum base-layer-shaped composite board.

The invention relates to a fermentation dairy product in food field, which is a lean cheese and process for preparation. Crystalline cellulose is utilized as fat substitute and sucrose fatty acid ester is utilized as fat imitation to produce novel low-caloric lean cheese with rich nutrition. During producing, the crystalline cellulose and the sucrose fatty acid ester is pro rata mixed and swelled with part butter milk as premix compound. After high speed shearing type stirring, the crystalline cellulose forms a micro-mesh shape cellulose dispersion with high viscosity, and the stereo meshed structure is filled with fat imitation sucrose fatty acid ester for improving physical arrangement of products. Then the above premix compound is charged to the rest butter milk or low-caloric butter milk powder reconstructed milk to evenly stir, to high pressure homogeneously treat, and to be charged with leaven and other addition agents, such as perfume compounds, condiment, coloring matter and the like, thereby producing the lean cheese product of the invention after fermenting, with missible oil shape appearance and taste similar to that of whole cheese.

The invention discloses a magnesium-chrome composite spinel brick which is made from synthetical magnesium-chrome spinel sand, magnesia, chromium concentrate and chrome oxide according the weight percentages as follows: taking 65 percent to 70 percent of MgO, 20 percent to 25 percent of Cr2O3, 0.5 percent to 1.2 percent of SiO2, 4 percent to 6 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.5 percent to 1.2 percent of CaO to the material of the number one synthetical magnesium-chrome spinel sand; taking 55 percent to 60 percent of MgO, 30 percent to 35 percent of Cr2O3, 0.5 percent to 1.2 percent of SiO2, 4 percent to 6 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.5 percent to 1.2 percent of CaO to the material of the number two synthetical magnesium-chrome spinel sand; taking 70 percent to 75 percent of MgO, 14 percent to 19 percent of Cr2O3, 0.8 percent to 1.2 percent of SiO2, 4.5 percent to 7 percent of Fe2O3, 2 percent to 4 percent of Al2O3 and 0.8 percent to 1.5 percent of CaO to the material of the number three synthetical magnesium-chrome spinel sand; taking 97 percent to 98.5 percent of MgO, 0.5 percent to 1.3 percent of SiO2, 0.5 percent to 1.3 percent of CaO and 0.2 percent to 0.5 percent of Fe2O3 to the material of the magnesia; taking 50 percent to 60 percent of Cr2O3, 9 percent to 15 percent of MgO, 0.3 percent to 1.5 percent of SiO2, 15 percent to 25 percent of Fe2O3 and 8 percent to 15 percent of Al2O3 to the material of the chromium concentrate; taking 92 percent to 96 percent of Cr2O3 and 4 percent to 8 percent of ZrO to the material of the chrome oxide. The invention has the advantage of having the characteristics of compact structure, thermal shock resistance, anti-scaling off, erosion resistance etc.

The invention provides a preparation method of a continuous carbon fiber reinforced aluminum-based composite material. According to the preparation method provided by the invention, the thickness of an aluminum layer adhered to the surface of the carbon fiber can be controlled by adopting a method of adhering curing aluminum powder to the surface of continuous carbon fiber through organogel, so that the content and the spacing of the carbon fiber in a composite material after hot pressing sintering can be controlled, the carbon fiber can be parallelly distributed in an aluminum matrix, and analuminum-based composite material with high carbon fiber content can be prepared. The preparation method disclosed by the invention is low in cost and easy to operate and is capable of realizing industrialized production; the strength of the carbon fiber reinforced aluminum-based composite material obtained through the preparation method provided by the invention is obviously superior to that of the carbon fiber reinforced aluminum-based composite material prepared through an existing infiltration method, and a wide application prospect is obtained.

The invention relates to a steel-based surface chrome-contained abrasion-resistant ceramic coating layer and a preparing method of the steel-based surface chrome-contained abrasion-resistant ceramic coating, and belongs to the technical field of methods for preparing steel-based protective coatings. The steel-based surface chrome-contained abrasion-resistant ceramic coating and the preparing method are characterized in that the steel-based surface chrome-contained abrasion-resistant ceramic coating is composed of silicon carbide ceramic abrasion-resistant powder, silicon dioxide, water glass, ferrochromium powder and the like; structure defects are overcome through the ferrochromium powder, the compactness of the coating structure is improved, and the metallurgical bonding strength between the coating and a steel base is greatly improved. By means of the preparing method, as a two-time curing technology is adopted, the curing time can be shortened, the coating quality can be improved, and a ceramic phase between the steel base and the coating can be easily generated; meanwhile, the coating has the abrasion resistance several times higher than that of the steel base, and the overall performance such as the surface rigidity and the corrosion resistance of the coating is improved. The preparing method is simple, construction is convenient, the production efficiency is high, and the economical effect and the practical effect are achieved. The problem that as a ceramic coating prepared in the prior art is poor in structure compactness, the overall performance of the ceramic coating can not be guaranteed through one-time curing is solved.

The invention relates to a production process of foie gras, comprising the following steps of: putting goose livers into a vacuum cut mixer to roughly cut after clearing and cleaning; putting the goose livers and ingredients into the vacuum cut mixer again to finely cut; cutting and mixing the goose livers into foie gras; and finally, canning, sealing in vacuum, sterilizing at high temperature, cooling by spraying water, entering a constant-temperature tank and canning at the temperature of 37 DEG C sequentially. The invention has simple process and low production cost and can effectively eliminate fishy smell and peculiar smell in the foie gras by cutting and mixing the goose livers at high temperature and high speed, and the foie gras has fine mouthfeel and just melts in the mouth.

The invention discloses a preparation method for a periclase composite spinel brick used for a cement kiln clinkering zone. The method comprises the following steps: firstly, preparing a magnesium sand granule material, a ferric oxide powder and an alumina powder; and synthetizing into hercynite granule material and pleonaste granule material at a certain ratio; weighing the above materials as follows: 6-15 parts of synthetized hercynite granule material, 40-55 parts of synthetized pleonaste granule material, 35-45 parts of magnesium sand granule material, 1-3 parts of ferric oxide powder and 1-2 parts of alumina powder; adding 2-5 parts of magnesium chloride solution or sulphurous acid paper pulp solution in the above materials for milling; then pressing the mixture in a press to obtain a green brick; and after drying, sintering and forming. The preparation method has the advantages that the sintered finished brick has the characteristics of compact tissue structure, high strength, excellent alkali corrosion resistance and thermal shock stability, good spalling resistance and is an ideal product for a large cement kiln clinkering zone and kiln coating is easy to hung. The product fills up the national blank, reaches the international leading level and can replace the same type of imported products.