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66results about How to "Has a strengthening effect" patented technology
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Low-temperature-resistant hot-rolled H-shaped steel and preparation method thereof
The invention discloses a low-temperature-resistant hot-rolled H-shaped steel and a preparation method thereof. The hot-rolled H-shaped steel comprises the following chemical components in percentage by weight: 0.07-0.10% of C, 0.2-0.4% of Si, 1.30-1.60% of Mn, at most 0.020% of P, at most 0.015% of S, 0.015-0.070% of V, 0.010-0.030% of Ti, and the balance of Fe and inevitable impurities. The production method comprises the following steps: converter smelting, LF (ladle furnace) refining, continuous casting, rolling and the like. The structure of the H-shaped steel is a polygonal ferrite and pearlite structure, the yield strength is 350-450 MPa, the tensile strength is 480-600 MPa, the percentage elongation after fracture is greater than or equal to 22%, and the -40-DEG C V-notch Charpy impact energy is greater than or equal to 200J.
Owner:SHANDONG IRON & STEEL CO LTD
Method for designing multi-overflow tray by equal residence time method
The invention relates to a method designing a multi-overflow tray by an equal residence time method, which is intended to raise tray mass transfer efficiency and processing capability, and alleviate amplification effect of equipment. The method is defined by residence time of the liquid on a tray bubbling zone, integrates advantages using an equal channel length method and an equal bubbling area method, takes regard of a contraction effect of a tower wall to a liquid flow and influence of physical property condition on the flow, and provides a calculating formula of the channel length in the tray bubbling zone under the equal residence time. Downcomer weirs on the edge at two sides of the tray are in a backswept weir structure, in order to increase overflow circumference length of the downcomer at two sides. A lower edge of an eccentric downcomer uses an arc or tooth-form structure, in order to balance a bottom gap outlet area of the downcomer. A liquid distribution plate is arranged in a liquid accepting plate, in order to balance liquid flow distribution at two sides of the downcomer. The method enables the liquid flow on each tray bubbling zone to have similar residence time and mass transfer efficiency, and achieves effects of reasonably distributing liquid, promoting gas and liquid uniform distribution and alleviating amplification effect of the tower equipment. The method is particularly suitable for large-scale tower equipment with high gas-liquid phase load.
Owner:PETROCHINA CO LTD +2
Lightweight aluminum alloy profile
The invention discloses a lightweight aluminum alloy profile. The lightweight aluminum alloy profile comprises the following components of, in percentage by weight, copper, magnesium, silicon, zinc, lithium, manganese, titanium, vanadium, boron, nickel, chromium, iron, rare earth metals, and and the balance aluminum and inevitable impurities, wherein the rare earth elements are any one or more mixtures of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. According to the lightweight aluminum alloy profile, the aluminum is taken as a main raw material, various metal materials are added, the manufactured aluminum alloy is light in weight, so that lightweight of the material is achieved; by adding the copper into the aluminum alloy, the mechanical property of the aluminum alloy can be improved, and the machinability of the aluminum alloy becomes better; and by adding the silicon into the aluminum alloy, the fluidity of the aluminum alloy during casting can be improved, best fluidity is obtained from eutectic to hypereutectic, and meanwhile, the tensile strength, the hardness, the machinability and the strength at high temperature of the aluminum alloy can be improved.
Owner:安徽鑫铂铝业股份有限公司
Preparation method for high-molecular weight polylactic acid steric compound with fusion stability
ActiveCN103333472ALower glass transition temperatureLittle impact on formationOrganic solventHeat resistance
The invention discloses a preparation method for a high-molecular weight polylactic acid steric compound with fusion stability. The preparation method comprises the following steps of (1) preparing poly-levolactic acid, poly-dextrolactic acid and plasticizer polyethylene glycol according to a certain weight ratio; (2) respectively dissolving the poly-levolactic acid, the poly-dextrolactic acid and the polyethylene glycol in an organic solvent, performing mixing and solution-casting under the condition of intense agitation after the poly-levolactic acid, the poly-dextrolactic acid and the polyethylene glycol are completely dissolved, and performing vacuum drying on a solution-casting sample; and (3) rapidly heating the solution-casting sample to 230 to 270 DEG C at a speed of 100 DEG C / minute under the condition of nitrogen protection after the vacuum drying, and slowly cooling at a speed of 10 DEG C / minute after 2 minutes of constant temperature. According to the preparation method, a very high possibility is provided for reserving, properties, such as the excellent mechanical property, the heat resistance and the like, of the polylactic acid steric compound in fused products.
Owner:SICHUAN UNIV
Flux-free vacuum-cast high-purity magnesium alloy and preparation method thereof
The invention provides a flux-free vacuum-cast high-purity magnesium alloy and a preparation method thereof. The method includes the following steps that (1) raw materials are preheated; (2) heating and smelting are performed as follows: after the inside of a furnace is pumped to be vacuum, the furnace is filled with inert gas to be under the pressure being 500-1,000 Pa, power-transmission heatingis started, and the three-stage type heating manner is adopted in the heating process; (3) gas introduction and refinement are performed as follows: gas introduction and refinement are performed in melt obtained in step (2), the inert gas is introduced, in the process of gas introduction and refinement, the temperature is increased to be 800-850 DEG C at the rate of 3-8 DEG C / min, then high-temperature standing is performed under the temperature condition that 800-850 DEG C is kept, and the standing time ranges from 15 min to 40 min; (4) filtering and casting are performed as follows: after high-temperature standing in step (3) ends, the temperature is reduced to be 760-820 DEG C, and casting is performed after filtering; (5) cooling is performed as follows: after casting in step (4), furnace cooling is started, or the inert gas is introduced for boosting cooling, and then a magnesium alloy cast ingot is obtained. The obtained magnesium alloy is uniform in structure, free of nonmetalslag inclusions (such as flux slag inclusions and oxidation slag inclusions), low in shrinkage porosity, few in cast ingot defect and obvious in effect on magnesium-rare earth alloys difficult in slagremoval.
Owner:郑州轻研合金科技有限公司
Manufacturing technology of reserved expansion joint and reserved deformation joint of crash barrier
InactiveCN103215891AEasy to removeLow costBridge structural detailsDeformation effectManufacturing technology
The invention relates to manufacturing technology of an expansion joint and a deformation joint of a bridge crash barrier. A steel plate and two foam plates are used for reserving the deformation joint and the expansion joint. The deformation joint steel plate is machined according to designed barrier formwork splicing section size. A bolt hole is reserved according to a bolt position of a barrier formwork. When the crash barrier formwork is mounted, a formwork splicing joint is adjusted to a designed deformation joint position, the steel plate is inserted at the splicing joint, and the steel plate and the barrier formwork are integrally connected through a bolt. Then, the foam plates are attached on two sides of the steel plate according to the width of the reserved deformation joint, the foam plates are machined to be in a barrier shape, and lubricating oil is coated on the contacting faces of the steel plate and the foam plates. When the formwork is disassembled, the steel plate is taken out upwards, and the standard deformation joint is formed. According to the technology, the formwork is convenient to assemble and disassemble and can be used repeatedly, cost is saved, the manufactured deformation joint and the manufactured expansion joint are straight and attractive, manufacturing is convenient, simple, quick and reliable, the used formwork can be used as a plug plate at the same time, reinforcing effect is achieved, the reserved joints are hollow, and deformation effect is really achieved.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD +1
Lucid ganoderma refined powder compound soft capsule and preparation method thereof
ActiveCN103340919ALow costImprove utilizationHydrocarbon active ingredientsAntipyreticBiotechnologyLycopersene
The invention relates to the technical field of health products, and in particular relates to a lucid ganoderma refined powder compound soft capsule and a preparation method thereof. The lucid ganoderma refined powder compound soft capsule comprises 1 to 300 parts of lucid ganoderma refined powder, 1 to 50 parts of lycopene, 1 to 50 parts of grifolan, and 1 to 500 parts of safflower oil. According to the lucid ganoderma refined powder compound soft capsule, the lucid ganoderma refined powder, lycopene, grifolan and safflower oil which are different in molecular structure are used in common and have some same pesticide effects and also have individual outstanding pesticide effects; and after being organically combined in proportion, the four materials complement and promote one another on curative effect and maximize the effects individually. A preparation in form of the soft capsule can cover the discomfort smell of the contents and effectively improve the stability of the lycopene and safflower oil, enables quick and complete intake and absorption of the healthcare components, and give full play to inflammation resistance, pain alleviating, poisonousness reducing, wound repair promoting, immunoregulation, tumor inhibition, resisting to cancer, three highs (high blood pressure, high blood sugar and high blood lipid) and cardiovascular disease, senescence delaying, improvement of liver function, organism balancing and adjusting and other effects.
Owner:东莞市味菇坊生物科技有限公司
Aluminum alloy guide wire suitable for overhead power transmission line and manufacturing method for aluminum alloy guide wire
InactiveCN107557621AImprove corrosion resistanceEasy to shapeMetal/alloy conductorsUltimate tensile strengthGuide wires
The invention relates to an aluminum alloy wire suitable for overhead transmission lines, belonging to the technical field of aluminum alloy wires, which is made of the following components in mass percentage: Mg2.0~3.2%; Si3.5~4.5%; Mn0.2 ~0.3%; Cr: 0.1~0.2%; Zr0.18~0.25%; Ti0.35~0.40%; Yb0.15~0.3%; the balance is Al and impurities with content ≤0.05%. The invention provides an aluminum alloy wire, which can improve the strength and corrosion resistance of the aluminum alloy wire while enhancing the conductivity of the aluminum alloy wire, so as to meet the needs of harsh environments.
Owner:国网河南省电力公司西峡县供电公司
Device for enriching and recycling organic carbon in municipal sewage and method for applying device
InactiveCN105417765AImprove adsorption capacityImprove adsorption removal effectInternal combustion piston enginesSpecific water treatment objectivesActivated sludgeMunicipal sewage
The invention relates to a device for enriching and recycling organic carbon in municipal sewage and a method for applying the device. The device comprises an enriching system, a separating system and a recycling system which are sequentially fittingly connected with one another by pipelines. The enriching system comprises a grate, an organic carbon enriching tank and an organic concentration tank which are sequentially fittingly connected with one another; activated sludge and combined chemical agents are arranged in the organic carbon enriching tank; the municipal sewage sequentially flows through the grate, the organic carbon enriching tank and the organic concentration tank and then flows into the separating system via the corresponding pipeline; the separating system comprises a secondary sedimentation tank and a sludge concentration tank; the recycling system comprises an anaerobic digestion fermenting tank and a combined heat and power generation device; heat energy and electric energy of methane generated after the municipal sewage is treated by the anaerobic digestion fermenting tank can be utilized by the aid of the combined heat and power generation device. The device for enriching and recycling the organic carbon in the municipal sewage and the method have the advantages that the device is simple in structure and reasonable in design, energy consumption can be effectively reduced, adsorption removal effects of the organic carbon can be improved, the sewage recycling cost can be saved, the energy utilization rate can be effectively increased, and the like.
Owner:俞汉青 +2
Fishing net thread use quality improvement processing process
InactiveCN107641955AImprove the effect of modified treatmentImprove physical and chemical propertiesPhysical treatmentFibre typesPhosphoric acidEngineering
The invention discloses a fishing net thread use quality improvement processing process. The process includes steps: (1) cleaning and deoiling treatment; (2) phosphoric acid solution soaking treatment; (3) treating fluid A soaking treatment; (4) ultraviolet irradiation treatment; (5) treating fluid B soaking treatment; (6) flushing and drying treatment. By special processing of fishing net threads, under joint actions in each step, the grafting effect of the fishing net threads is evidently improved, utilization characteristics of the fishing net threads are improved, and the finally treaded fishing net threads are high in coating compatibility, corrosion resistance, strength and comprehensive quality, thereby being high in popularization and utilization value.
Owner:CHAOHU JUNYE FISHING TACKLE CO LTD
Laser compound treatment method and device of perforated plate bushings
InactiveCN103801822AWon't fall offEasy to processLaser beam welding apparatusShock waveOptoelectronics
A laser shock compounding method and device of perforated plate bushings are especially suitable for compound treatment of bushings of perforated parts such as granulator templates. The method includes the steps that shock waves generated on the surface of a laser radiation material shocks a compound layer material covering the surface of a perforated plate, the compound layer material generates tensile deformation and is embedded into holes of the perforated plate, and eventually the compound layer material is punched and broken to get through bushings holes through macro-energy laser pulses. The device is composed of a laser generator, transparent liquid, a blank holder, a clamp, a compound layer, the perforated plate, a working platform, a working platform control device, a computer and a laser generator control device. Through the laser shock compound treatment of the perforated plate bushings, the inner walls of all the holes and the working surface of the perforated plate are covered with the compound layer material, the whole abrasive resistance of the bushings is improved, the bushings of all the holes are connected together through the compound layer material covering the working surface of the perforated plate to form a whole, and therefore the bushings can not fall off in the working process.
Owner:JIANGSU UNIV
Process for producing aluminum medium gaugefoil through 8150 alloy
ActiveCN111455224AGood tensile strengthGood elongationFurnace typesMetal rolling arrangementsAlloyAluminum foil
The invention discloses a process for producing an aluminum medium gaugefoil through an 8150 alloy. The process includes the following steps that 1, material proportioning is performed; 2, smelting isperformed; 3, refining is performed; 4, cast rolling is performed; 5, cold rolling is performed; 6, rolling is performed through a rolling mill; 7, thickness shearing is performed; and 8, annealing and packaging are performed. An aluminum medium gaugefoil roll is annealed and cooled through an annealing furnace and then is packaged, and thus a finished aluminum medium gaugefoil is obtained. The aluminum medium gaugefoil produced through the process is excellent in tensile strength, ductility and the like, is not prone to cracking during stamping, is high in yield and meets the using requirement of a container foil.
Owner:JIANGSU ZHONGJI LAMINATION MATERIALS
Flux-cored wire for aluminum and aluminum welding
ActiveCN102451960AHigh strengthPoor improvementWelding/cutting media/materialsSoldering mediaAir conditioningWeld strength
The invention discloses a flux-cored wire for aluminum and aluminum welding. The flux-cored wire material comprises the following chemical components in percentage by weight: 0.01 to 20 percent of Si, 0 to 30 percent of Zn, 0 to 5 percent of Ti, 0 to 0.5 percent of Ce, 0.001 to 0.5 percent of P, less than 0.1 percent of other inevitable impurity and the balance of aluminum. The flux-cored wire has the characteristics of good drawing performance, high flowability, high weld strength, high postwelding gas tightness, and no corrosion, and can be widely applied to aluminum and aluminum welding of heat exchangers or radiators in air conditioning, refrigerator, automobile and refrigeration industry.
Owner:LICHUANG TAISHAN ELECTRONICS TECH
Pure metal/high-entropy alloy nano-multilayer film with controllable phase change characteristics and preparation method thereof
ActiveCN112481589AImprove bindingIncreased chance of ionizationVacuum evaporation coatingSputtering coatingSputteringHigh entropy alloys
The invention discloses a pure metal / high-entropy alloy nano-multilayer film with controllable phase change characteristics and a preparation method thereof. The preparation method comprises the following steps: alternately carrying out magnetron sputtering on the surface of a silicon substrate with an oxide layer removed through a pure metal target and a high-entropy alloy target to obtain the pure metal / high-entropy alloy nano-multilayer film, wherein the pure metal target is a Cu target, and the high-entropy alloy target is a Fe50Mn30Co10Cr10 target or a Fe50Mn30Co10Ni10 target; during magnetron sputtering, the Cu target and the high-entropy alloy target both adopt a direct-current power supply, the power is 200 W, and the deposition air pressure is 0.8-1.3 Pa; and the pure metal / high-entropy alloy nano-multilayer film is a Cu / Fe50Mn30Co10Cr10 nano-multilayer film or a Cu / Fe50Mn30Co10Ni10 nano-multilayer film. According to the preparation method, the preparation of the metal / high-entropy alloy nano-multilayer film with adjustable phase change is realized.
Owner:XI AN JIAOTONG UNIV
Under-table table top connecting piece provided with installing lugs
PendingCN107620755AEasy to attach and removeIncrease card rib strengthSheet joiningEngineeringMechanical engineering
Owner:ZHEJIANG DEQING MAICHEN FURNITURE
Aluminum foil for electronic tag with low pinholes and high finish degree, and production process thereof
ActiveCN111519050AMeet the needs of useSolve the low temperature resistance of annealingFurnace typesMetal rolling arrangementsMetallurgyAluminum foil
The invention discloses an aluminum foil for an electronic tag with low pinholes and a high finish degree. The aluminum foil for the electronic tag with the low pinholes and the high finish degree comprises the following raw materials in percentage by weight: 0.15 to 0.3 percent of Si, 0.03 to 0.06 percent of Cu, 0.05 to 0.15 percent of Zn, 0.08 to 0.10 percent of Mn, 0.05 to 0.10 percent of Ti, 0.3 to 0.7 percent of Fe, 0.05 to 0.06 percent of Ni, 0.005 to 0.006 percent of Cr, 0.006 to 0.008 percent of Cd, 0.005 to 0.006 percent of Pb, 0.006 to 0.008 percent of Sn, 0.006 to 0.008 percent of Zr, and the balance Al, wherein the weight percentage of the Fe and the Si satisfies the relationship according to the following formulas: Fe / Si is equal to 2 to 3, and Fe+Si is less than or equal to 1percent. The aluminum foil produced by the invention solves the problems of rolled dark lines, tissue lines, easiness in causing strip breakage and the like encountered in the aluminum foil production process.
Owner:JIANGSU ZHONGJI LAMINATION MATERIALS
Method for reinforced washing and purification of catering lampblack in virtue of loofah sponge and application thereof
PendingCN111992023ARenewableRecyclableDispersed particle separationAir quality improvementChemistryPollutant
The invention discloses a method for washing catering lampblack pollutants by applying loofah sponge reinforced activated sludge and application thereof. The loofah sponge is a hydrophilic / oleophylicamphoteric porous fiber plant. According to the method, the loofah sponge is cleaned and dried and is then fixed in activated sludge in a washing tank by using an iron wire for microbial biofilm formation, and then catering lampblack waste gas introduced into the washing tank is subjected to washing and biofilm treatment with the loofah sponge, thereby realizing efficient separation and conversionof gas and pollutants of catering lampblack. The loofah sponge is wide in source, low in price and biodegradable, and the method is relatively simple in treatment process and has the advantages of environmental friendliness and the like.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Special fixing tool for power transformation equipment sulfur hexafluoride gas detection
InactiveCN107490657AEasy to holdHigh strengthGas analyser construction detailsSulfur hexafluorideEngineering
The invention relates to a special fixing tool for power transformation equipment sulfur hexafluoride gas detection, and belongs to the technical field of electrical test assisting tools of substations. The special fixing tool for the power transformation equipment sulfur hexafluoride gas detection comprises a first clamp body and a second clamp body which are symmetrically connected, wherein a positioning mechanism is arranged at a junction of the first clamp body and the second clamp body; arc-shaped pressing parts are arranged at the end parts of clamping parts of the first clamp body and the second clamp body; the first clamp body and the second clamp body are made of aluminum alloy; the aluminum alloy is prepared from the following components in percent by mass: 2.0-3.2% of Mg, 3.5-4.5% of Si, 0.2-0.3% of Mn, 0.1-0.2% of Cr, 0.18-0.25% of Zr, 0.35-0.40% of Ti, 0.15-0.3% of Yb and the balance of Al and impurities with the content being lower than or equal to 0.05%. The special fixing tool for the power transformation equipment sulfur hexafluoride gas detection is simple in structure, high in material strength, resistant to corrosion and convenient to mount and detach, and can remarkably reduce potential safety hazards caused by frequent detachment of screws in the SF6 gas detection process.
Owner:国网河南省电力公司超高压公司 +1
Antifouling paint for ships, as well as preparation method and application of antifouling paint
InactiveCN107880603AImprove anti-corrosion performanceObvious passivation behaviorMolten spray coatingAntifouling/underwater paintsIsothiazolinoneTriazine
The invention provides antifouling paint for ships, as well as a preparation method and an application of the antifouling paint. The antifouling paint for the ships is prepared from Zn-Al-Mg-RE as main agents, organosilicon or fluoride as an auxiliary agent as well as cuprous oxide and auxiliary toxic agents as antifouling agents, wherein the auxiliary toxic agents are one or more of isothiazolinone, triazine and zinc and copper complexes of pyridyl thiophenol oxide. The anti-fouling effect is good in the corrosive environment. High-speed arc spraying is a dynamic and non-equilibrium rapid metallurgical process. As a result of asymmetry of melting of cored wires on two electrodes, the difference in composition of a wire sheath and composition of a core, and the asynchronism of melting of the sheath and the core, the size of droplets and alloying inside the droplets are seriously non-uniform, and various forms of tissue are formed during solidification and cooling.
Owner:DALIAN ZINTELLIGENCE TECH
Antifatigue health-care ginseng oral liquid and preparation method thereof
InactiveCN103494133AHigh health valueFast absorptionFood ingredient functionsFood preparationPolygonum fagopyrumMedicine
The invention discloses an antifatigue health-care ginseng oral liquid and a preparation method thereof. The antifatigue health-care ginseng oral liquid comprises, by weight, 45-50 parts of cherry, 20-30 parts of apple, 5-6 parts of apricot, 3-5 parts of corn, 5-6 parts of buckwheat, 2-3 parts of mulberry, 2-4 parts of Chinese yam, 2-3 parts of ginseng, 1-2 parts of Stellaria yunnanensis Franch., 1-2 parts of leek, 2-3 parts of fructus ligustri lucidi, 1-2 parts of broadleaf holly leaf, 3-4 parts of tremella, 2-3 parts of gynostemma pentaphyllum, 1-2 parts of epimeddium and 1-2 parts of sweet potato stem and leaf. The antifatigue health-care ginseng oral liquid has a high health care value, a fast absorption rate and a good taste, can be directly drunk, is free of being mixed with water, and has no bitter taste. Tremella has effects of nourishing brain and strengthening heart, and raising spirit and tonifying qi. Cherry and apple have effects of promoting intelligence and physical power maintenance. Ginseng, gynostemma pentaphyllum and epimeddium have effects of building body. The antifatigue health-care ginseng oral liquid is especially suitable for fatigued people and can effectively promote physical ability recovery.
Owner:朱奕
Magnesium-based amorphous alloy solder used for magnesium alloy brazing and preparation method for magnesium-based amorphous alloy solder
InactiveCN105057912AImprove performanceEasy to prepareWelding/cutting media/materialsWelding/soldering/cutting articlesBrazingCopper
The invention discloses magnesium-based amorphous alloy solder used for magnesium alloy brazing and a preparation method for the magnesium-based amorphous alloy solder. The structural formula of the amorphous alloy solder is Mg66Cu15Ag5Zn4Dy1GdxNd9-x. According to the preparation method, Mg, Cd, Nd, Ni and Zn are mixed in a graphite crucible according to the needed element composition proportion, melted under the protection of argon and poured into a copper die, and then the Mg-Cu-Ag-Zn-Dy-Nd amorphous alloy solder is obtained. The magnesium-based amorphous alloy solder is suitable for magnesium alloy brazing at the solidus temperature of more than 400 DEG C, and has the characteristics of being low in melting point and high in strength. When the heat-resistant magnesium alloy solder is used for Gw103K magnesium alloy brazing, the room temperature shear strength of a brazing overlap joint is 128-136 MPa. The preparation method is simple, easy to operate, good in component control, small in impurity content and suitable for preparing high-quality magnesium-based amorphous alloy solder.
Owner:NANCHANG HANGKONG UNIVERSITY
Office table with lower tabletop connecting pieces
The invention relates to the field of connecting technologies for office furniture, in particular to an office table with lower tabletop connecting pieces. The office table comprises tabletops, transverse beams, table legs and the lower tabletop connecting pieces. The lower tabletop connecting pieces are connected with the lower sides of the tabletops; the lower tabletop connecting pieces comprisefirst clamp pieces and second clamp pieces, the first clamp pieces are correspondingly provided with first buckles with clamp ribs, the second clamp pieces are correspondingly provided with second buckles with protruded clamp tables, the clamp tables are arranged on corresponding surfaces of the second buckles, each transverse beam is positioned between the two corresponding first buckles, the corresponding second buckles are positioned on the inner sides or the outer sides of the first buckles, the second clamp pieces are clamped with the first clamp pieces, and the clamp ribs are butted tothe clamp tables, so that the transverse beams can be connected with the tabletops. The office table has the advantages that the first clamp pieces can be clamped with the second clamp pieces, so thattabletop plates and the transverse beams can be quickly fixed; the lower tabletop connecting pieces can be quickly and conveniently unfastened, and accordingly the tabletops and the transverse beamscan be conveniently and quickly connected with one another and can be conveniently and quickly detached from one another.
Owner:ZHEJIANG DEQING MAICHEN FURNITURE
Preparation method of titanium-aluminum alloy target material
InactiveCN112410739AHigh strengthImprove toughnessVacuum evaporation coatingSputtering coatingUltimate tensile strengthMaterials science
The invention discloses a preparation method of a titanium-aluminum alloy target material. According to the technical scheme, the preparation method of the titanium-aluminum alloy target material comprises main material powder, ingredient powder and trace powder, and further comprises the following steps that S1, the main material powder, the ingredient powder and the trace powder are mixed to beuniform, large-particle impurities are filtered out, powdery particles with the equal size are reserved, and mixed powder is obtained; and S2, the mixed powder remained after filtering in the step S1is poured into medical alcohol for soaking and cleaning; The preparation method of the titanium-aluminum alloy target material has the beneficial effects that the titanium-aluminum alloy target material is prepared by adding the ingredient powder composed of silicon powder and magnesium powder and the trace powder composed of chromium powder and then adopting a powder metallurgy method, the strength of the alloy is improved, the casting performance, the corrosion resistance and the welding performance are all improved, the finally prepared titanium-aluminum alloy target material is excellent in performance, balanced in attributes in all aspects and simple in production process, and therefore the production cost can be reduced, and production is more economical.
Owner:光洋新材料科技(昆山)有限公司
Moth-resistance processing method of bamboo products
InactiveCN108312275AAvoid crackingGood flexibilityRadiation/waves wood treatmentBiocideMicrowavePre treatment
The invention discloses a moth-resistance processing method of bamboo products. The moth-resistance processing method comprises the following steps: S1, sectioning, cleaning and drying bamboo materials, and then performing microwave treatment to obtain preprocessed bamboo materials; S2, putting the preprocessed bamboo materials into lime water to be soaked and cleaned, then putting the bamboo materials into mothproof liquid to be soaked, and draining water after soaking is carried out; and S3, performing heat treatment on the bamboo materials processed in the step S2. According to the moth-resistance processing method of the bamboo products disclosed by the invention, the phenomena of moldiness, moth damage and the like on the bamboo products are effectively prevented, and the service lifeof the bamboo products is prolonged.
Owner:广德县泉村竹制品有限公司
Method for preventing cast-in-place pile cage floating and adopted reinforced concrete base
PendingCN110144882AQuality improvementGuarantee the construction qualityBulkheads/pilesReinforced concreteEngineering
The invention discloses a method for preventing cast-in-place pile cage floating and an adopted reinforced concrete base. The reinforced concrete base is welded to the bottom of a reinforcing cage ofa cast-in-place pile, and a middle hole of the reinforced concrete base is arranged to be in a shape of a hopper with the large top and the small bottom; when pile concrete is poured, gravity of the concrete enables the reinforced concrete base to generate downward pulling force, and therefore the cage floating phenomenon is prevented. According to the method, the downward force is generated through the reinforced concrete base, and cage floating can be prevented; the bottom surface of the reinforced concrete base is in contact with the bottom surface of a pile hole, and upward floating forcegenerated by impact of the poured concrete basically has no influence on a pile bottom section; the reinforced concrete base has the strengthening effect on the pile bottom, the quality of the pile bottom can be improved, certain guarantees are provided, and the pile bottom quality is reliably guaranteed after a grouting pipe is used for secondary reinforcement on the pile bottom.
Owner:GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC
Highly digestible sweet soup balls and preparation method thereof
The invention belongs to the field of food processing and relates to highly digestible sweet soup balls and a preparation method thereof. The highly digestible sweet soup balls are characterized by being prepared from components by weight as follows: 40-70 parts of glutinous rice flour, 28-35 parts of wheat starch, 7-12 parts of lotus root starch, 3-8 parts of sucrose, 60-75 parts of water, 0.15-0.25 parts of hydroxypropyl distarch phosphate starch, 0.01-0.02 parts of monoglyceride, 0.03-0.05 parts of sucrose ester, 0.1-0.25 parts of ascorbic acid and 0.05-0.2 parts of composite phosphate. A traditional technology is adopted and tightly combined with a modern production technology, and production cost can be reduced substantially. The sweet soup balls prepared with the formula are easy toform and are full, besides, frost cracking rate and water loss rate of the quick-frozen sweet soup balls are greatly reduced, time for cooking is shortened, soup obtained after cooking cannot be turbid, and the digestive rate is increased by 10.5%.
Owner:HUAZHONG AGRI UNIV
Flux-cored wire for aluminum and aluminum welding
ActiveCN102451960BHigh strengthPoor improvementWelding/cutting media/materialsSoldering mediaChemical compositionWeld strength
Owner:LICHUANG TAISHAN ELECTRONICS TECH
Block hoisting tool
ActiveCN108657931AImprove versatilityNot easy to damageLoad-engaging elementsMechanical engineeringStructural stability
The invention provides a block hoisting tool which comprises a top plate and a bottom plate, wherein the length of the top plate is smaller than that of the bottom plate; a first lifting lug is arranged on the top plate; at least two second lifting lugs are arranged on the bottom plate; the top plate and the bottom plate are connected through at least two pull rods to form a triangular frame; anda first reinforcing rod is arranged between every two adjacent pull rods. A plurality of hoisting points arranged on a block are connected with the bottom plate to disperse the local stress of the tool and the block; in addition, the triangular frame structure of the tool is stressed uniformly and has structural stability, so that the tool receives tensile force instead of the original shearing force and bending moment resisting stress, the tool and all parts of the block are stressed uniformly, and the hoisting efficiency and the universality of the tool are improved; in addition, the tool isunlikely to damage, and the length of the tool does not need to be the same as that of the block, so that the manufacturing material and cost of the tool are reduced, and the tool storage space is also reduced; and the first reinforcing rod can improve the strength of the tool.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
The Method of Designing Multiple Overflow Trays by Equal Residence Time Method
The invention relates to a method designing a multi-overflow tray by an equal residence time method, which is intended to raise tray mass transfer efficiency and processing capability, and alleviate amplification effect of equipment. The method is defined by residence time of the liquid on a tray bubbling zone, integrates advantages using an equal channel length method and an equal bubbling area method, takes regard of a contraction effect of a tower wall to a liquid flow and influence of physical property condition on the flow, and provides a calculating formula of the channel length in the tray bubbling zone under the equal residence time. Downcomer weirs on the edge at two sides of the tray are in a backswept weir structure, in order to increase overflow circumference length of the downcomer at two sides. A lower edge of an eccentric downcomer uses an arc or tooth-form structure, in order to balance a bottom gap outlet area of the downcomer. A liquid distribution plate is arranged in a liquid accepting plate, in order to balance liquid flow distribution at two sides of the downcomer. The method enables the liquid flow on each tray bubbling zone to have similar residence time and mass transfer efficiency, and achieves effects of reasonably distributing liquid, promoting gas and liquid uniform distribution and alleviating amplification effect of the tower equipment. The method is particularly suitable for large-scale tower equipment with high gas-liquid phase load.
Owner:PETROCHINA CO LTD +2
A pure metal/high-entropy alloy nano-multilayer film with controllable phase transition properties and its preparation method
ActiveCN112481589BImprove bindingIncreased chance of ionizationVacuum evaporation coatingSputtering coatingSputteringHigh entropy alloys
The invention discloses a pure metal / high-entropy alloy nano-multilayer film with controllable phase transition characteristics and a preparation method thereof. The pure metal target and the high-entropy alloy target are alternately magnetized on the surface of a silicon substrate after the oxide layer is removed. Controlled sputtering to obtain pure metal / high-entropy alloy nano-multilayer film; the pure metal target is Cu target, and the high-entropy alloy target is Fe 50 mn 30 co 10 Cr 10 target or Fe 50 mn 30 co 10 Ni 10 target; during magnetron sputtering, both the Cu target and the high-entropy alloy target use a DC power supply, the power is 200W, and the deposition pressure is 0.8-1.3Pa; the pure metal / high-entropy alloy nano-multilayer film is Cu / Fe 50 mn 30 co 10 Cr 10 or Cu / Fe 50 mn 30 co 10 Ni 10 nanometer multilayer film. The invention realizes the preparation of the metal / high-entropy alloy nano-multilayer thin film with adjustable phase transition.
Owner:XI AN JIAOTONG UNIV
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