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310results about How to "Not easy to generate" patented technology

Nickel-base high-temperature alloy with low density and high melting point and preparation process thereof

The invention relates to high-temperature alloy technology, and in particular provides an isometrical cast nickel-base high-temperature alloy with low density, high incipient melting temperature and good casting property and a preparation process thereof, which can be used for floating tile materials of a combustion chamber. The alloy comprises the following compositions by mass percentage: 0.03 to 0.06 percent of C, 5 to 12 percent of Cr, 5.5 to 6.5 percent of Al, 3 to 8 percent of Co, 3 to 7 percent of W, 2 to 4 percent of Mo, 1.6 to 3.2 percent of Nb, 0.01 to 0.03 percent of B, 0.008 to 0.025 percent of Y and the balance of Ni. A vacuum induction furnace is adopted to smelt a master alloy, and a smelting crucible is a CaO crucible or a MgO crucible; and the operation process comprises the following steps: putting alloying elements such as carbon, chromium, cobalt, tungsten, molybdenum and niobium in proportion and a nickel plate into the crucible; melting the alloy when the vacuum degree reaches between 50 and 0.1 Pa; and after completion of the melting, refining for 30 to 300 seconds at a temperature of between 1,550 and 1,600 DEG C, cutting off electricity, forming a film, breaking the film to add Al and Al-Y and Ni-B interalloy for uniform stirring, and casting a master alloy pig at a temperature of between 1,450 and 1,500 DEG C. The invention solves the problems of low incipient melting temperature, poor plasticity and inoxidability and the like of the nickel-base high-temperature alloy.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Commodity double-layer anti-fake method based on technologies of internet of things

InactiveCN103093361ANot easy to copyDouble encryptionTransmissionCommerceBarcodeThe Internet
Provided is a commodity double-layer anti-fake method based on technologies of internet of things. The commodity double-layer anti-fake method based on the technologies of the internet of things comprises a plain code layer, a code layer, a mobile terminal, a server and a database. The plain code layer only contains inquiry codes which are used for inquiry of commodity information. A user obtains an inquiry code through the mobile terminal, and the inquiry code is automatically sent to the server. The server obtains a commodity information code through a decipherment algorithm, inquires corresponding commodity information from the database, and then sends the commodity information back to the mobile terminal. The code layer only contains verification codes which are used for verification of authenticity of a commodity, wherein a verification code and a corresponding inquiry code are a pair of rule codes which are bound in a one-to-one correspondence mode. The user obtains the verification code through the mobile terminal which is provided with identification software of two-dimension codes, bar codes or digital codes, and the verification code is automaticlly sent to the server. The server matches the verification code and the inquiry code, and sends a matching result back to the mobile terminal. The commodity double-layer anti-fake method based on the technologies of the internet of things has the advantages of being good in anti-fake performance, providing convenience, and being high in encryption performance, rapid, not prone to being forged, and beneficial for protecting rights and interests of consumers and enterprises.
Owner:HUNAN IOT ONLINE TECH

Copper smelting device and process

The invention provides a copper smelting device and a copper smelting process. In the device, a shell of a rotary horizontal type cylindrical furnace body is made of a steel plate; an inner liner is made of a refractory material; the furnace body passes through two supporting rings and is supported on a foundation through four supporting rollers; one side of the furnace body is provided with a transmission mechanism; a motor is used for driving a speed reducer to drive the furnace body to rotate along a central shaft through a gear and a gear ring on a cylinder; the furnace body is partitioned into a smelting area, a blowing area and a refining area by a refractory brick retaining wall; a gap is formed at the bottom of the retaining wall; the bottoms of all areas are provided with a spray gun respectively; a charging hole is formed above the smelting area; a flue hole and a fluxing agent hole are formed above the blowing area; a main burner nozzle and an auxiliary burner nozzle are arranged on the shell of the furnace body end close to the two sides of the smelting area and the refining area respectively; and a slagging hole and a copper discharging hole are formed on the shell of the furnace body end on one side of the auxiliary burner nozzle. The device has a simple structure, a reasonable design and extremely good popularization value and application value and is energy-saving and environment-friendly.
Owner:DONGYING LUFANG METAL MATERIAL

One-step copper smelting technology and device thereof

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.
Owner:DONGYING LUFANG METAL MATERIAL

Production process and production line for continuous stainless steel coil

The invention relates to the machining for a stainless steel coil of a heat exchanging pipe. A production process for a continuous stainless steel coil comprises a pipe making step, a pipe bending step and a cutting step which adopt continuous on-line machining, wherein the first pipe making step comprises the following step: using a steel band as a raw material to perform on-line continuous pipe making; the second pipe bending step comprises the following steps: conveying an obtained steel pipe into a pipe bending machine; conveying a bent pipe to a second pipe bending position to bend the bent pipe for a second time; continuously bending the pipe in turn until the steel pipe is bent and assumes a single continuous bent pipe; and the third cutting step comprises the following step: sizing the single continuous bent pipe and cutting pipe end excess materials to obtain a single coil single pipe with a length of between 15 and 133 meters without a radial weld joint. The production process has the advantages of low cost, continuous pipe making and pipe bending and convenient machining, assembling and transportation. The obtained stainless steel coil has few or no radial welding spot, strong corrosion resistance without stress corrosion or corrosive pitting phenomenon, stable mechanical strength and relatively better heat exchanging efficiency.
Owner:BAC DALIAN

Non-rhenium nickel base single crystal superalloy and preparation method thereof

The invention discloses non-rhenium nickel base single crystal superalloy and a preparation method thereof. The non-rhenium nickel base single crystal superalloy comprises the following components in percentage by weight: 7.25-7.75% of Cr, 4.8-5.2% of Co, 1.8-2.2% of Mo, 7.8-8.2% of W, 6.3-6.7% of Ta, 6.0-6.2% of Al, 0.12-0.18% of Hf, 0.04-0.06% of C, 0.003-0.005% of B, 0.010-0.030% of Y, and the balance of Ni. The preparation method for the non-rhenium nickel base single crystal superalloy comprises the steps as follows: adopting a vacuum induction furnace to smelt the raw material into mother alloy, and preparing a mother alloy casting rod through gravity casting; adopting a seed crystal method to prepare a single crystal test bar within the temperature gradient of 150-250 K/cm and the withdrawing rate of 5-100 micron/s through a Bridgeman directional solidification technology; performing solution treatment on the single crystal superalloy for 2-4 h within the temperature range of 1,295-1,305 DEG C and performing air cooling, then performing high-temperature aging treatment on the single crystal superalloy for 2-4 h within the temperature range of 1,090-1,310 DEG C and performing air cooling; performing low-temperature aging treatment on the single crystal superalloy for 16-24 h within the temperature range of 850-890 DEG C and performing air cooling.
Owner:NANJING UNIV OF SCI & TECH

Composite equipment for flue gas waste heat recovery and dust cleaning

The invention relates to composite equipment for flue gas waste heat recovery and dust cleaning, belonging to the technical field of flue gas waste heat recovery and dust cleaning. The equipment comprises a heat exchange and absorption compound device, a recuperative heat exchanger, a precipitate collection and pollutant discharge device, a solution pool and a liquid pump, wherein a liquid distributor is arranged at the top of the heat exchange and absorption compound device, the recuperative heat exchanger is located at the lower part of the heat exchange and absorption compound device, and the precipitate collection and pollutant discharge device is arranged at the lower part of the heat exchange and absorption compound device; the heat exchange and absorption compound device comprises a flue gas inlet section, a flue gas inlet diversion section, a heat exchange and absorption section, a flue gas outlet liquid baffle diversion section and a flue gas inlet section, and a liquid mesh type liquid membrane distribution net is arranged inside the heat exchange and absorption section. Waste heat recovery and purification treatment are integrated, sensible heat and latent heat of exhausted flue can be recovered, the composite equipment also have the actions of corrosion prevention, dust removal, scale prevention, purification treatment and the like, flow resistance and energy consumption of fans and water pumps are also reduced, the cost of products is lowered, and the deep recovery of flue gas waste heat is achieved.
Owner:BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE +1

Electrolytic cathode containing titanium boride-carbon coating, and preparation method thereof

ActiveCN102304725AExtended service lifeWeaken the peakCarbon coatingAluminium
The invention discloses an electrolytic cathode containing a titanium boride-carbon coating, and a preparation method thereof. The electrolytic cathode is characterized in that: a coating is coated on the surface of the electrolytic cathode, wherein the coating comprises components of, by mass: 20 to 22% of TiB2, 15 to 20% of epoxy resin, 24 to 27% of diethylene triamine, 0.3 to 0.8% of carbon fiber, and balance of graphite powder. The preparation method of the aluminum electrolytic cathode comprises steps that: the materials are sufficiently mixed and uniformly coated on the surface of the electrolytic cathode; the coating is heated from normal temperature to 150 DEG C, such that the coating is cured, and the electrolytic cathode containing the titanium boride-carbon coating is obtained.According to the invention, good wettability of aluminum liquid and the electrolytic cathode is utilized, such that aluminum oxide deposition is not easy to be left on the surface of the electrolyticcathode. Therefore, deposition or crusting is not easy to occur, current is uniformly distributed, disturbance of magnetic fields to the aluminum liquid is reduced, current efficiency is improved, energy consumption is reduced, the service life of an electrolyte tank is prolonged, and aluminum liquid level and polar pitch can be appropriately reduced. With the electrolytic cathode provided by theinvention, an average working voltage and a secondary reaction probability of the aluminum electrolyte tank are reduced, aluminum electrolytic production is improved, and the quality of aluminum products is improved.
Owner:YUNNAN RUNXIN ALUMINUM

Method for preparing MWCNTs/Co1-xZnxFe2O4 magnetic nanocomposite material

The invention relates to a method for preparing a multiwall carbon nano-tube (MWCNTs)/cobalt zinc ferrite (Co1-xZnxFe2O4) magnetic nanocomposite material, which comprises the following steps of: (1) mixing a strong oxidizing acid and MWCNTs in a mass ratio of 1:200-1:400 and reflowing the solution in an oil bath after ultrasonic dispersion; and (2) dispersing the acidized MWCNTs into solution of ethylene glycol at room temperature, weighing a ferric salt, a zinc salt and a cobalt salt, dissolving the salts into the solution, adding polyethylene glycol and anhydrous sodium acetate after the added salts are fully dissolved, mechanically stirring the mixture, putting the mixture into a high-pressure reaction kettle for reaction after polyethylene glycol and anhydrous sodium acetate are fully dissolved, cooling the mixture to room temperature, and washing, collecting and drying a product. The magnetic nanocomposite material prepared by the method has the advantages of pure crystalline phase, high dispersibility, difficult agglomeration, high magnetization intensity and high magnetic induction sensitivity; and the method has the advantages of simple preparation process, relatively lower requirements on production equipment and easy industrial production.
Owner:DONGHUA UNIV

Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal

The invention provides a combustion-supporting desulfurating coal-saving additive which is used in the burning coal in boiler, the preparation of which is composed of 24-35 percent combustion improvers of methanol, aether, tween-80; 32-38 percent oxidants of potassium permanganate, potassium chlorate and potassium dichromate; 4-28 percent desulfurizer in which quicklime, potassium permanganate, potassium chlorate and potassium dichromate take part in; 18-22 percent anti-coking agent which contains potassium dichromate and quicklime; the rest is water, which complement the total volume of the additive to be 100 percent. The additive is prepared by adding water in the quicklime to produce lime cream; heating the water for acting as solution, after potassium permanganate, potassium chlorate and potassium dichromate are added into the solution and are stirred evenly; adding and mixing the methanol and tween-80 into the solution evenly, and then adding and mixing the lime cream into the solution evenly; finally adding and mixing the aether into the solution evenly; and preserving the heat for 1 hour. The invention can improve the desulfurization rate by 40 percent, improve the coal saving rate by 25 percent, and improve the thermal efficiency of the boiler by up to 5-10 percent; and can prevent the occurrence of boiler coking accident.
Owner:周兴泽

Drawing forming method of two-metal layered composite wire

ActiveCN104138923AHigh degree of freedom of combinationHigh bonding strengthDissimilar metalManufactured material
The invention relates to a drawing forming method of a two-metal layered composite wire, which belongs to the technical field of the preparation of a two-metal layered composite wire. The drawing forming method is characterized by comprising the following steps: cladding a metal pipe blank with a heterogeneous rod, drawing and pre-compounding the metal pipe blank with the heterogeneous rod at a room temperature in a single manner, rapidly heating, treating by adopting the combination of drawing and metallurgically compounding under a condition of controlling the temperature and finely drawing at the room temperature to prepare a high-quality two-metal layered composite wire. The drawing forming method has the advantages that the combination strength of a compounded interface of the two-layer layered composite wire is high, a dispersion layer is thin, composite metal is uniformly distributed along the circumferential direction and the longitudinal direction, a cladding ratio is easy to precisely control, the drawing intermediate annealing is not required, the product specification is flexible, raw materials can be freely combined, the product quality and performance are excellent, and the micro two-metal layered composite wire with the diameter of less than 1mm is easy to prepare. The drawing forming method is particularly suitable for preparing the two-metal layered composite wire with an inter-metal compound being easy to generate on the compounded interface and the two-metal layered composite wire which is difficult to process.
Owner:UNIV OF SCI & TECH BEIJING

Large-scale domestic garbage pyrolysis and gasification technology

The invention relates to a large-scale domestic garbage pyrolysis and gasification technology. The large-scale domestic garbage pyrolysis and gasification technology includes the following steps that after domestic garbage is transported to a garbage pit, a grab bucket is used for grabbing the domestic garbage to the top of a pyrolysis and gasification furnace and loading the domestic garbage into a pyrolysis and gasification tank in the pyrolysis and gasification furnace through a loading device. Pyrolysis and gasification of the domestic garbage are completed in the tank, and ash obtained after pyrolysis and gasification is loaded into an ash tank through a discharging device and then is transported outwards. Heat needed by the pyrolysis and gasification tank is transmitted in from a combustion chamber in the pyrolysis and gasification furnace through a partition wall, and high-temperature flue gas in the combustion chamber passes through waste heat utilizing and purifying devices and other devices and then is discharged into the air. Compared with existing domestic garbage incineration, pyrolysis and gasification melting technologies and other technologies, the large-scale domestic garbage pyrolysis and gasification technology has the obvious beneficial effects that the domestic garbage adaptability is high, large-scale production is achieved, environment friendliness is good, cost is low, and the investment is small.
Owner:许志英
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