52results about How to "Meet industrial needs" patented technology

The invention discloses a treatment method for improving alloy material strength, toughness, and anti-fatigue life. The method comprises solid solution and aging treatments. The method also comprises cryogenic cooling, tempering, and laser impact treatments. The cryogenic cooling treatment comprises the steps that: from room temperature, the alloy is cooled to -196 DEG C with a cooling speed of 1-10 DEG C/min, and the temperature is maintained for 10-40h. According to the tempering treatment, the alloy is heated to 100-150 DEG C, and the temperature is maintained for 2-3h. Laser impact parameters comprise laser impact spot diameter of 1-10mm, pulse energy of 1-10J, laser wavelength of 900-1200nm, repetition rate of 0.1-1HZ, pulse width of 15-40ns, and output laser pulse energy fluctuation no higher than +/-5%. The alloy material is preferably aluminum, magnesium, and titanium alloy. With the method, alloy material tissue can be compact, residue stress is low, and refined grains exist. With the method, yield strength, tensile strength, impact toughness, and anti-fatigue life of the alloy material can be greatly and simultaneously improved.

The invention provides a preparation method of a coated lithium ion battery ternary positive electrode material. The coated lithium ion battery ternary positive electrode material is obtained by dispersing a nanometer oxide in a dispersing medium with ultrasound, mixing with a ternary positive electrode LiNi<x>Co<y>Mn<z>O2 and performing stirring, drying and sintering. The nanometer oxide coated ternary positive electrode material prepared by employing a physical coating method is simple and practical in preparation process and low in cost, production on a large scale can be achieved, and the industrial demand of the lithium ion battery ternary positive electrode material is satisfied; and moreover, the coated material has favorable electrochemical performance such as cycle property, rate performance and capacity and favorable thermal stability, and the performance demand of a lithium ion battery can be satisfied.

The invention discloses a rare earth oxygen-free copper based alloy and a production process thereof. The rare earth oxygen-free copper based alloy is prepared by adding rare earth elements RE, Mn and lithium into copper, wherein the rare earth element RE is at least one of La and Ce; the total addition amount of RE is 0.04-0.08w%; the addition amount of Mn is 0.01-0.02w%; as lithium is an active metal element, the lithium added into the copper is added as a Li-Cu intermediate alloy; and the addition amount of the lithium is 0.05-0.15w%. The production process comprises production steps of washing electrolytic copper, shearing, melting, keeping the temperature and stirring, wherein an additive is added when the temperature of a molten copper liquid is 1260-1350 DEG C in the steps of melting and temperature keeping; the molten copper liquid is covered with a layer of ash wood and is mechanically stirred by using a green tree branch or electromagnetically stirred by using an electromagnetic bar, thereby uniformly mixing the molten liquid; and the mixing and stirring time is 20-30 minutes. The rare earth oxygen-free copper based alloy disclosed by the invention has the characteristics of high antioxidation, high strength and high conductivity at a low temperature.

The invention provides a method for rapidly breeding hairy roots of vietnamese sophora roots. The method comprises the following steps: (1) seeds of Sophora tonkinensis are disinfected and inoculated to a 1/2 MS medium for germination, and aseptic seedlings of Sophora tonkinensis are obtained; (2) R1601 Rhizobium rhizogenes is used for inducing rooting of aseptic cotyledons of Sophora tonkinensis; (3) division of hairy roots obtained in the step (2) is carried out, and the divided hairy roots are placed in a nutrient solution for rapid breeding and cultivation, and the breeding multiple reaches 39-55 times. The hairy roots of vietnamese sophora roots have the characteristics of fast growth speed, good genetic stability, and good and stable synthesis capability; partial metabolites are released to the medium, and the hairy roots can be used as alternative resources of industrial vietnamese sophora roots in large scale production.

The invention discloses a Fe-based amorphous alloy composite. The composition of the Fe-based amorphous alloy composite is FeaAlbGacY(3-d)VdInxCoyBzSir, wherein a, b, c, d, x, y, z, and r represent atomic percent, a is larger than or equal to 70 and smaller than or equal to 76, b is larger than or equal to 3 and smaller than or equal to 5, c is 0 or 2, d is larger than or equal to 0 and smaller than or equal to 3, x is larger than or equal to 0 and smaller than or equal to 1.86, Co is larger than or equal to 8 and smaller than or equal to 10, z is 4 or 8, and r is larger than or equal to 0 and smaller than or equal to 3. The Fe-based amorphous alloy composite has excellent high plasticity and soft magnetic properties and has the saturation induction density Bs up to 1.73T, the bulk amorphous alloy composite prepared with a powder metallurgy method has the compactness up to 98.7% and strength up to 2.08 GPa, has good mechanical properties and can meet the industrial requirement, meanwhile, the Fe-based amorphous alloy composite contains no expensive rare earth elements, the demand for the only more expensive indium is very low, so that the production cost is not high, the process is not complex, and commercial production is easy to implement.

The invention discloses a continuous rotation multifunctional three-finger mechanical paw. A physical mechanical structure comprises a wrist part and a paw part. On the basis of the physical mechanical structure, a control system and a sensing system of the three-finger mechanical paw are constructed. The wrist part comprises a rotation freedom degree and is used for rotation of the three-finger paw. The paw part comprises an opening and closing freedom degree and is used for opening and closing of the three-finger paw. The control system of the three-finger mechanical paw comprises two motordrivers. The sensing system is composed of two touch switches, and the paw opening and closing extreme position is detected. Through the finger tip part mechanical structure design, the function similar to the function that an inner hexagon wrench screws an inner hexagon screw can be achieved. The continuous rotation multifunctional three-finger mechanical paw has the beneficial effects that the grabbing, operating and continuous rotating functions are combined, and the operation functions of inner hexagon screw and outer hexagon nut screwing can be achieved.

The preparation process of intermetallic compound filament with powder core for arc spraying includes the following steps: mixing aluminum powder of granularity 38-44 micron and purity not lower than 99.5 % and iron (nickel ) powder of granularity 53-61 micron and purity not lower than 99.5 % in the atom ratio of 1 to 1; pressing the mixture in a hydraulic press into blank and painting the surface with one thin graphite layer; self-spreading reaction in a vacuum combustor to obtain loose intermetallic compound block; crushing, grinding, sieving to obtain 200-325 mesh granularity powder material and drying; and making Fe (Ni)-Al compound filament with powder core. The present invention has good spraying performance, good coating layer performance, high performance/cost ratio, wide use temperature range, simple technological process and low power consumption.

The invention discloses high temperature lipase, preparation for mutants thereof, and application thereof, and in particular discloses a separated lipase with an amino acid sequence as SEQ ID NO:4, a coding sequence thereof, a carrier, a cell and a composition containing the separated lipase, a preparation method for the separated lipase, and application of the separated lipase in catalyzing ester synthesis, performing chiral separation or transforming plant oil into biodiesel.

The invention discloses a separated thermostable lipase of of which amino acid sequence is shown in SEQ ID NO:2, a coding sequence of the thermostable lipase, a carrier with the thermostable lipase, a cell with the thermostable lipase. a composite with the thermostable lipase, a preparation method of the thermostable lipase and applications of the thermostable lipase in the catalytic ester synthesis, chiral separation and convertion from vegetable oil to biodiesel. The name of the invention is ''thermostable lipase, expression of coding gene of thermostable lipase and applications of thermostable lipase''.

The invention discloses a magnetic shoe internal defect detection method based on a wide convolution and recurrent neural network, and relates to the field of magnetic shoe detection, and the method comprises the following steps: constructing a training set, constructing a wide convolution and LSTM recurrent neural network, training the wide convolution and LSTM recurrent neural network, obtaining a trained detection network, and detecting the acoustic signal of the to-be-detected magnetic shoe through the trained detection network to complete the internal defect detection of the to-be-detected magnetic shoe. According to the method, specialist knowledge and complex signal processing and feature selection are not needed, spatial-temporal feature extraction and classification can be directly carried out on original signals in an end-to-end mode by utilizing the wide convolution and the LSTM recurrent neural network, and therefore the target of identifying the internal defects of the magnetic shoe is achieved.

The invention discloses a glaze blue-and-white porcelain, a ceramic body is composed of waste porcelain, natural clay, calcined talc, feldspar, alumina micro powder, silicon nitride, black clay and wollastonite; The glaze blue-and-white porcelain is composed of zinc oxide, cobalt oxide, quartz, limestone, lithium feldspar, ulexite, silicon carbide, silicon nitride, ferric oxide, zirconium silicate, zinc borate, montmorillonite, carboxymethyl cellulose sodium and sodium humate by optimizing a porcelain body and a glaze, physicochemical performance of ceramic colouring effect, hardness and stability can be increased, a product class completely accords with industrial and life requirement, and waste utilization effect can be realized.

The invention relates to a preparation method of a graphene powder material. The preparation method comprises the following steps: (1) growing a vertical graphene array on a copper foil through roll-to-roll plasma chemical vapor deposition equipment by using a special process; (2) dripping a proper amount of PMMA solution on the surface of the copper foil on which the vertical graphene array is grown, uniformly spin-coating the copper foil, and heating in a drying oven for curing; (3) directly and completely stripping the cured vertical graphene PMMA polymer layer from the copper foil by using a mechanical stripping method according to the characteristic of poor binding force between the vertical graphene array and the copper foil; (4) soaking the stripped polymer layer in acetone to completely dissolve PMMA to obtain a graphene sheet suspension; and (5) after filtering and separating the graphene suspended matter, putting the graphene suspended matter into a ball mill or a sand mill to obtain the graphene powder material. The graphene powder material prepared by the preparation method disclosed by the invention has a relatively large lamellar area and relatively high conductivity and heat conductivity coefficient, and can be used as an additive material.

The invention relates to a solar battery laser back electrode window opening end point judging method. According to the method, the laser with the same wavelength and frequency is used for carrying out continuous etching for many times on the back side of a battery piece, a step-shaped structure is formed at the finally obtained back side of the battery piece, the battery surface resistivity under each step surface is respectively measured, and finally, the corresponding relationship between the laser window opening end point and the laser thinning time number is obtained, so the thinning laser repeating time number required by the etching removal of a back side passivation layer is found. Compared with the traditional method, the continuous proceeding mode is adopted for the thinning of the back passivation layer, and similarly, the continuous proceeding mode is adopted for the surface resistivity measurement, so the detection time is greatly shortened, the production efficiency is improved, and in addition, the state information after the etching in each time can be completely remained by samples obtained after the final etching. The window opening end point judging method provided by the invention has the advantages that simplicity is realized, the implementation is easy, the cost is low, and in addition, the precision is higher.

The invention relates to the technical field of ceramics, and particularly relates to a wear-resistant ceramic. The wear-resistant ceramic comprises the following raw materials in parts by weight: 3-8 parts of iron oxide, 3-8 parts of quartz, 4-8 parts of anorthite, 3-5 parts of barium sulfate, 12-20 parts of kaolin, 4-6 parts of titanium dioxide, 1-3 parts of graphene, 2-4 parts of fly ash, and 1-3 parts of mineralizing agent. Compared with conventional ceramics, the above wear-resistant ceramic is better in wear resistance and can meet a large number of industrial needs. Meanwhile, the above wear-resistant ceramic has a wider application range and is suitable for more severe application environments compared with conventional ceramics.

The invention discloses a wear-resistant high hardness ceramic and a processing technology. The ceramic is prepared from the following raw materials in parts by weight: 13-16 parts of aluminum hydroxide, 21-26 parts of polycrystalline silicon, 33-42 parts of ferric oxide, 35-42 parts of celestite, 12-15 parts of graphite, 15-17 parts of indium, 20-55 parts of aluminum oxide, 14-29 parts of ceramicpowder, 8-15 parts of feldspar, 4-7 parts of clay, 5-10 parts of Soochow soil, 9-18 parts of zirconium oxide, 3-6 parts of zinc oxide, 2-4 parts of magnesium carbonate, 1-2 parts of crystal stones and 2.4-4.7 parts of spodumene. By adding zirconium oxide into the formula, the whole ceramic has the advantages of high toughness, high bending strength and high wear resistance, excellent heat isolating property, coefficient of thermal expansion close to that of steel and the like, and can meet the massive industrial demands. Compared with common ceramics, the ceramic has a wider application rangeand is suitable for more severe using environments, the whole processing method is simple, and the processing method is low in cost and worth being popularized.

The invention discloses a pretreatment method for improving the mechanical property of wrought magnesium alloy. The pretreatment method comprises the following steps of (1) homogenization treatment and compression deformation; (2) predeformation treatment, wherein bars are machined into tensile test bars, and then the tensile test bars are placed into a tensile testing machine to be subjected to predeformation treatment (stretching or compression), and the amount of deformation ranges from 0.5% to 20%; and (3) subzero treatment, wherein the magnesium alloy tensile test bars subjected to predeformation treatment in the step (2) are placed into a liquid nitrogen environment to be subjected to subzero treatment for 0.5 hour to 24 hours, and the tensile test bars are taken out and placed intoair to naturally recover to the room temperature. With the pretreatment method for improving the mechanical property of wrought magnesium alloy, the purposes of improving the strength and the flexibility of magnesium alloy can be achieved at the same time, and the current situation that the relationship between strength and flexibility is inverted after common annealing treatment or T5 and T6 aging thermal treatment is relieved.

The invention providers a paddle type air adsorption dryer, a system and an air drying method, which relate to the field of air drying. The paddle type air adsorption dryer comprises a breather pipe,an isolation frame, a drain pipe and a paddle machine, wherein the isolation frame is arranged in the breather pipe, and divides an air passage of the breather pipe into an upper air passage and a lower air passage; the drain pipe is arranged on the breather pipe and is located on one side of the lower air passage; the paddle machine is arranged in the breather pipe; one half of the paddle machineis located in the upper air passage; the other half of the paddle machine is located in the lower air passage; the axis of the paddle machine and the isolation frame are located in the same plane; anotch is formed in the lower air passage and is connected with the drain pipe. The paddle type air adsorption dryer is smaller in size, simple in structure, high in air inlet rate, and energy-saving and high-efficient since the paddle machine is driven by wind power, can be adjusted according to the needs, and achieves a drying effect meeting the requirement on different drying degrees.