33results about How to "Reasonable component design" patented technology

The invention discloses a new high-resistance electrical heating alloy material and a preparation method thereof. The material comprises the following components by weight percent: 0.01-0.06% of C, 1.0-1.5% of Si, 0.1-0.6% of Mn, less than or equal to 0.02% of P, less than or equal to 0.015% of S, 20-23% of Cr, 74.0-78.0% of Ni, 0.1-0.25% of Al, 0.2-1.0% of Fe, 0.01-0.2% of Ti, 0.2-0.8% of Zr and the balance of inevitable impurities. The preparation method comprises the steps of smelting, forging, wiring, annealing, rinsing, drawing and the like. Compared with Cr20Ni80, the prepared new high-resistance electrical heating alloy material has better oxidation resistance and is an electrical heating alloy material with low thermal expansion coefficient, good high temperature strength, long service life and high resistivity.

The invention discloses a high-resistance electrothermal alloy material, which comprises the following components in percentage by weight: 0.02 to 0.08 percent of C, 0.75 to 1.6 percent of Si, 0.1 to 0.5 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.015 percent of S, 20 to 23 percent of Cr, 0.1 to 0.5 percent of Al, 0.2 to 0.8 percent of Y, 0.2 to 1.0 percent of Fe, and the balance of Ni and inevitable impurities. The preparation method for the high-resistance electrothermal alloy material comprises the following steps of: smelting; forging; coiling; annealing; rinsing; mold drawing, and the like. Compared with Cr20Ni80, the high-resistance electrothermal alloy material has higher antioxidation performance, and is an electrothermal alloy material with small thermal expansion coefficient, high high-temperature strength and processability, long service life and high resistivity.

The invention relates to an ultrahigh-strength high-toughness high corrosion-resisting CuNiSiNbSn elastic copper alloy and a preparation method thereof, and belongs to the technical field of elastic alloy preparation. The ultrahigh-strength high-toughness high corrosion-resisting CuNiSiNbSn elastic copper alloy is prepared from the following components in percentage by mass: 6.0-7.5% of Ni, 1.0-1.4% of Si, 0.8-1.2% of Nb, 0.5-0.8% of Sn, 0.1-0.15% of Mg, 0.1-0.15% of Cr and the balance of Cu and inevitable impurities. The alloy preparation process comprises the following steps: smelting, performing semicontinuous casting, uniformly annealing, carrying out hot rolling, carrying out cold rolling, performing solid solution, performing combined aging (pre-aging treatment, cold-rolling and aging treatment), performing finish rolling, and annealing at low temperature. The ultrahigh-strength high-toughness high corrosion-resisting CuNiSiNbSn elastic copper alloy can meet requirements of various conductive elastic devices and is applicable to ultrahigh-strength high-toughness high corrosion-resisting conductive elastic devices requested in the electronic industry and electrical engineering, the automobile industry and the ocean transportation industry.

The invention discloses semi-rigid concrete and a preparation process thereof. The semi-rigid concrete is concrete which is prepared through replacing part of fine aggregate of ordinary concrete with a flexible material and then blending, wherein the mass of the replaced fine aggregate is equal to that of the replacing flexible material; the flexible material contains the following ingredients in percentage by mass: 30-40% of rubber powder, 30-40% of rubber grains, 0.5-1.5% of polypropylene fibers, 3-8% of fly ash and 20-28% of mineral admixture; zinc stearate is required to be removed from the surfaces of the rubber grains and the surface of the rubber powder through a strong-base solution. The preparation process comprises the steps: (1) preparing the flexible material and carrying out grading combination in proportion; (2) preparing the semi-rigid concrete. According to the preparation process disclosed by the invention, the steps are simple, the operation is simple and convenient, the invested cost is low, the use effect is good, and the defects in the existing ordinary concrete that the deformation is little, the brittleness is high, the tensile strength is low, and the like can be made up.

The invention discloses a bamboo-wood fiber board using bio-based non-formaldehyde adhesive and a preparation method thereof. The fiber board comprises the raw materials of, by weight, 60-70 parts offirst fiber, 6-10 parts of second fiber, 10-20 parts of adhesives, 25-35 parts of hydrophobic auxiliary agents, 6-8 parts of additives and 6-8 parts of modifiers. The second fiber is prepared from anhydrous aluminum chloride, aluminum powder, water, magnesium lactate and acetic acid, a sol-gel method is adopted during preparation, and the anhydrous aluminum chloride, the aluminum powder and the water are polymerized under a reaction condition to form a linear polymer to obtain polyaluminium chloride sol; and the magnesium lactate is added, the acetic acid is used as a stabilizer, and a spinning solution is obtained by stirring and reduced pressure distillation. According to the fiber board and the preparation method, the bamboo-wood fiber board is reasonable in component design and simplein process operation, the prepared bamboo-wood fiber board does not contain formaldehyde, benzene and xylene toxic substance release, formaldehyde pollution is effectively avoided, and the bamboo-woodfiber board has excellent mechanical property, high strength, excellent hydrophobic property and high practicability.

The invention discloses an instant sodium alginate hydrogel fire extinguishing agent and a preparation method thereof. The instant sodium alginate hydrogel fire extinguishing agent comprises modifiedsodium alginate hydrogel, a filler and water-absorbent resin; the filler comprises a first additive, a second additive and a third additive; the first additive is a conventional dry powder extinguishing agent and comprises ammonium dihydrogen phosphate, ammonium sulfate, auxiliary agents and other materials. The preparation method comprises the steps: preparing a first additive, firstly crushing ammonium dihydrogen phosphate, ammonium sulfate and other main materials by using a supersonic jet mill to obtain ultrafine mixed powder which has the advantages of fine particle size, narrow particlesize distribution, high overall surface activity and convenience for subsequent modification. The invention discloses the instant sodium alginate hydrogel fire extinguishing agent and the preparationmethod thereof, wherein the instant sodium alginate hydrogel fire extinguishing agent is reasonable in component design and simple in process operation, preparation of the sodium alginate hydrogel fire extinguishing agent can be realized, and the fire extinguishing agent is excellent in fire extinguishing performance and relatively high in practicability.

The invention discloses a corn straw oil stain adsorbent for an oil field, and a preparation method thereof. The corn straw oil stain adsorbent comprises oxidized sodium alginate, pretreated fibers, modified carbon fibers and other components. The preparation method comprises the following steps: preparing a modified gel with a high specific surface area and a high adsorption capacity by taking the modified carbon fibers, oxidized sodium alginate and pretreated fibers as main bodies and polyvinyl alcohol as a reinforcing phase, and then performing hydrophobic treatment through trimethylsilaneand reduced graphene oxide to obtain the oil stain adsorbent. The adsorbent has certain hydrophobic and oleophylic properties and excellent oil absorption and oil retention capacities. According to the corn straw oil stain adsorbent for the oil field, and the preparation method thereof, the component design is reasonable, the technological operation is simple, and the prepared adsorbent has excellent hydrophobic and oleophylic properties, obviously increased oil stain adsorption capacity, high specific surface area, excellent oil retention performance, can be suitable for various working conditions and has high practicability.

The invention discloses a fragrant cotton blank and a preparing method thereof. The cotton blank comprises the following ingredients including fragrant fiber, low-melting-point fiber and cotton. The preparing method comprises the following steps that after weighed materials are mixed and uniformly stirred, a raw cotton fiber sheet is formed through loosening, impurity removal, carding for sheet forming and lamination. After the temperature of the raw cotton fiber sheet is raised to 130 to 190 DEG C and the heat insulation is carried out, pressurization, shaping and grinding are carried out, and the fragrant cotton blank is obtained. The fragrant cotton blank and the preparing method have the advantages that the ingredient proportion is reasonable, the processing and the manufacturing are easy, the heat insulation performance is stable, the damp affecting cannot easily occur, and the prepared cotton blank has the permanent fragrant smell. The fragrant cotton blank and the preparing method are applicable to industrial scale production.

The invention discloses steel for an excavator slewing bearing and a production process thereof, and belongs to the technical field of slewing bearing materials. The steel is prepared from, by mass, 0.48-0.54% of C, 0.17-0.32% of Si, 0.70-0.85% of Mn, 0.04-0.18% of Cr, 0.20-0.24% of Mo, 0.022% or below of P, 0.022% or below of S, 0.30% or below of Ni, 0.018% or below of Cu, 0.10% of below of V and the balance Fe. The production process comprises converter smelting, LF refining, vacuum degassing (VD), continuous casting and steel billet examination and storage. The production process has the advantage that the strength and wear resistance of the steel for the slewing bearing can be effectively improved.

The invention provides a kit for induced amplification of regulatory T cells from naive T cells. The kit comprises an anti-CD3 antibody, a PBS (phosphate buffer solution), a lymphocyte separation solution, a naive CD4<+>T Cell Biotin-Antibody Cocktail II antibody, Naive CD4[+]T Cell Micro Bead Cocktail II magnetic beads and a Treg induced culture medium. The invention also provides an application method of the kit. The kit and application method thereof are simple to operate, are safe and effective, and have the advantages of shorter amplification induction period, higher stability and lower cost.

The invention discloses a preparation method and an application process of an oil washing agent. A base solution is prepared from the following components by weight percent: 10-15% of A, 5-10% of B, 15-20% of C, 5-10% of D, 5-10% of E, 5-10% of F, 5-10% of G, 5-10% of H and 10-20% of water. A preparation method of the base solution of the oil washing agent comprises the following steps: adding F and G into a stirring tank with a heating function according to the proportion; sequentially adding A, B, C, D and E into the stirring tank while stirring, and heating for complete dissolution; and finally, adding H, controlling the temperature at 80+/-5 DEG C, and performing heat preservation for 1 hour to obtain the base solution. The oil washing agent is obtained by preparing the base solution into 1% of aqueous solution with 4% of NaCl and 0.1% of CaCl2 solution, and curing the aqueous solution in water bath at 90 DEG C for 24 hours. The application process of the oil washing agent adopts an oil recovery method of combining the oil washing agent with the CO2 huff-puff technology; the oil washing efficiency of the oil washing agent reaches 97% and above, and the purpose that the single round of huff-puff can increase the oil recovery rate by 1% is further achieved.

The present invention relates to the field of biotechnology and particularly provides a mesenchymal stem cell, cell culture media, and a culture method and an application. The provided set of cell culture media comprise four culture media, each culture medium independently comprises a basic medium, serum and cytokines, wherein the basic medium comprises DMEM/F12, DMEM or alpha-MEM, the serum comprises FBS or NBCS, and the cytokines comprise EGF and bFGF. The set of the cell culture media are simple in components and low in cost, each culture medium is designed reasonably and highly efficientlycultures cells, and at the same time continuously reduces serum content, and continuous culturing of the four culture media can highly efficiently separate and culture the mesenchymal stem cell fromtissues, and avoids quality instability and heterogeneous contamination caused by batch-to-batch differences. The provided mesenchymal stem cell is low in immune rejection, good in quality, small in the batch-to-batch differences and free of heterogeneous pollution.

The invention discloses a safety ink that can be scrubbed away. The main ingredients include pigment, link stuff and an additive; the composition formula is as follows: (1) the organic pigment is adopted in pigment; (2) natural resin, phenolic resin or alkyd resin modified by colophony is added to the formula as the link stuff; and (3) mineral oil, wetting dispersant and wax are added in the formula as the additive; and the specific formula is as follows: the content of the pigment is 20-30 percent; the content of the link stuff is 60-70 percent; and the content of the additive is 2-10 percent. The invention has the advantages that when volatile or short-acting organic solvent is used for altering notes, the contents printed with the safety ink of the invention can present the marks of loss, spread or washing away, and therefore, the ink can effectively prevent a fake producer from obliterating and altering a genuine note. The ink has reasonable ingredient design and low manufacture cost and can be used for wet offset printing and the like.

The invention belongs to the technical field of conveying machinery, and relates to a side face pressing device. The side face pressing device is fixed below a conveying roller way frame body and mainly comprises a rack, a push frame, a direct guide rail pair, a linear bearing pair and an air cylinder fixing seat; and the pushing frame acts through a fixed air cylinder to clamp a workpiece with a matched device on a conveying roller way. According to the side face pressing device, the product is reasonable and ingenious in structure and formed by welding sectional materials and plates, the whole component is reasonable in design, the structure is compact, and materials taking, manufacturing and installation are convenient.

The invention discloses a denitrification slow-release carbon source material for a leaching type superimposed wetland and a preparation method of the denitrification slow-release carbon source material. The components of the carbon source material comprise fruit shells and polycaprolactone, and the volume ratio of the fruit shells to the polycaprolactone is 2: 1. According to the invention, the fruit shells and polycaprolactone are mixed to be used as an external carbon source material component, and are processed; the particle size of the prepared spherical carbon source material is uniformly distributed, and the fruit shells are added to the polycaprolactone, and the volume ratio of the fruit shell to the polycaprolactone is 2: 1, such that the production cost is substantially reduced,the practicality of the product is improved, and the carbon source material can be widely used in a variety of working conditions, and has good application prospects. The component design is reasonable, the structure is simple and optimized, the obtained carbon source material can provide a carbon source for the denitrification biochemical process, the wetland water permeation efficiency is fullyguaranteed according to the special structure of the carbon source material, the cost is low, and the practicability is high.