70results about How to "Strong production operability" patented technology

The invention discloses a method for evaluating self-discharge consistency of a lithium iron phosphate battery. The method mainly comprises the following steps of: measuring open circuit voltage after the battery is charged and open circuit voltage after the battery is laid at high temperature under the conditions of constant voltage and constant current; calculating the voltage drop of the battery, a mean value and a standard difference; and determining the upper control limit of the voltage drop to determine that the battery has high self-discharge consistency under the condition that the voltage drop does not surpass an upper specification limit. By the method for evaluating the self-discharge consistency of the lithium iron phosphate battery, evaluation accuracy, high production operability and obvious practical meaning are achieved, and the grouping consistency of the lithium iron phosphate battery is effectively improved.

The invention discloses a lithium secondary battery consistency screening method, belonging to the field of secondary batteries, characterized in that: a unit battery grades the capacity, platform, and internal resistance when conducting capacity grading and detection, and then the unit battery is charged by multi-step constant current and constant voltage, wherein a constant current of 0.3-5C5 is used for charging to a voltage V0, when the charging current is 0.1-0.3 C5, the charge is stopped and the battery is shelved; after the battery is shelved for 5-30 min, the charging is continued with a constant current of 0.1-0.3 C5 to the voltage V0, when the charging current is 0.05-0.1 C5, the charge is stopped and the battery is shelved; after the battery is shelved for 5-30 min, the charging is continued with a constant current of 0.05-0.1 C5 to the voltage V0, when the charging current is 0.03-0.05 C5, the charge is stopped and the battery is shelved; after the battery is shelved for 5-30 min, the charging is continued with a constant current of 0.03-0.05 C5 to the voltage V0, when the charging current is 0.01-0.03 C5, the charge is stopped; after the charging is complete, the unit battery is shelved at a normal temperature, the shelving time is no less than 24h, when the shelving ends, measurement is carried out on the open-circuit voltage Vt of the unit battery, if the open-circuit voltage Vt is no less than the result of V0 minus delta V0 and minus n*delta V, the unit battery is qualified. According to the invention, the qualified unit battery screened by the invention has low self-consuming hazards, the combined battery pack has good self-discharge consistency, high reliability, and rapidness, simpleness and easy operation in practical application, and has a good market application prospect.

The invention discloses a production method of high magnetic induction oriented silicon steel, comprising the following steps: a) carrying out steel-making and continuous casting to produce slabs, wherein the slabs comprise 0.05-0.10 wt% of C, 2.5-4.0 wt% of Si, 0.008-0.028 wt% of S, 0.008-0.040 wt% of Als, 0.004-0.012 wt% of N, 0.08-0.20 wt% of Mn, 0.08-0.30 wt% of Cu, and the balance of Fe; b) preserving heat at no higher than 1250 DEG C and then carrying out hot rolling, wherein the finishing temperature is higher than 850 DEG C; c) carrying out annealing, pickling, once cold rolling or twice cold rolling containing intermediate annealing to get finished product thickness; d) decarburizing annealing, and preserving heat in wet nitrogen-hydrogen protective atmosphere; e) coating an annealing isolation agent and then carrying out high temperature annealing; f) carrying out nitriding treatment; and g) coating an insulating coating, and carrying out stretching, flattening and annealing. According to the invention, the types and distribution of the inhibitor is adjusted, the stable and high inhibition capability is guaranteed, by cooperating with hot rolling and twice recrystallization, the high magnetic induction oriented silicon steel with stable properties is obtained.

The invention provides a preparation method of high-gloss PET film transfer mirror-surface polyurethane synthetic leather. The preparation method comprises the following steps: firstly ironing wet polyurethane synthetic leather by a post-treatment calender at a temperature of 120-140 DEG C, and cooling to obtain a wet polyurethane synthetic leather semi-finished product; using a high-gloss PET mirror-surface film as a release film, and uniformly coating the front surface of the high-gloss PET mirror-surface film with a layer of polyurethane slurry to form a surface layer, and drying to obtain a high-gloss PET film; and finally heat-conglutinating a bonding layer of the high-gloss PET film and the front surface of the wet polyurethane synthetic leather semi-finished product, drying, cooling, and stripping the high-gloss PET mirror-surface film so as to obtain the high-gloss PET mirror-surface polyurethane synthetic leather. The mirror-surface effect of the leather is similar to the mirror-surface effect of patent leather. In addition, the leather provided by the invention has high gloss, high transparency, high flex resistance, resistance to yellowing and fogging resistance.

The invention provides a synthesis method of sulbenicillin sodium and sulbenicillin sodium used for injection, which comprises the concrete steps of: using 6-APA and BSA to synthesize an organic salt, and dissolving the organic salt into dichloromethane; using a sulphur phenylacetic acid triethylamine salt and pivaloyl chloride to make mixed anhydride; carrying out anhydrous condensation on the sulphur phenylacetic acid triethylamine salt and the pivaloyl chloride in the dichloromethane; and then forming a sodium salt, free-drying and obtaining a finished product. The new technical process is stable and feasible, better and stable in product quality and strong in operability of production, and reduces the environmental pollution.

The invention belongs to the field of lithium ion battery materials, and discloses a lithium ion battery alumina hydrate coating membrane and preparation method thereof. The alumina hydrate slurry is coated on the surface of the lithium ion battery membrane. The preparation method comprises the following steps: mixing nano-level alumina hydrate, surfactant, thickening agent, adhesive, dispersing agent, defoaming agent and solvent, stirring, using a coating device to uniformly coat the slurry on the frontage and the back surface of the lithium ion battery membrane so as to form the coating layer, drying the coating layer to obtain the lithium ion battery alumina hydrate coating membrane, winding and sealing to store. Besides the high security of the coating membrane, the heat resistance, puncture strength, and the electrolyte retention of the lithium ion battery membrane are improved, the electrochemical property of the lithium ion battery can be obviously improved, and the production operability is strong.

The invention relates to a preparation method of glycyrrhetinic acid of a bulk drug for livestock, in particular to a method for extracting effective components from a plant medicine to prepare the bulk drug of a medicine for livestock, particularly a preparation method for extracting purified glycyrrhetinic acid from licorice, which is used for preventing and treating the disease of the livestock. The invention starts off from the feasibility of actual production, develops the preparation and the method thereof of the glycyrrhetinic acid of the bulk drug for the livestock, is widely applied to the nuisance-free breeding industry, promotes the production of nuisance-free foods and guarantees the safety of the foods, and the purity of the glycyrrhetinic acid is high. The invention has reasonable technology, strong production operability and large value of practical application, is economical and practical and can hopefully bring favorable economic benefit and social benefit, and the purity of a product can reach more than 90%.

The invention relates to the field of hot rolling pickling plates, in particular to a boracic low-carbon hot rolling pickling plate and a preparation method thereof. Boron with the content of 0.0010-0.0030% is added into a low-carbon hot rolling pickling plate, wherein the thickness is larger than or equal to 2.0 mm and less than or equal to 6.0 mm, and thus based on the ideal structural performance, multiple kinds of measures for controlling the surface quality can be taken, so that steel plate mixed crystals are effectively avoided, and the problem of rolled edge mixed crystals is especiallysolved. The boron is added into the low-carbon hot rolling pickling plate to reduce the transformation temperature from austenite to ferrite, so that structural transformation does not happen at thefinishing rolling temperature of 840-860 DEG C at a hot rolling stage, that is to say, no mixed crystal defects exist, finally, the even structural performance is obtained, and meanwhile, an advantageis created for inputting a large amount of descaling water to overcome scale defects at the hot rolling stage.

The invention discloses foliar fertilizer for puer tea trees. The foliar fertilizer is prepared from the following components in parts by weight: 4 to 10 parts of fresh puer tea leaves, 8 to 21 parts of jatamans valeriana rhizome medicine residues, 8 to 21 parts of radix puerariae medicine residues, 5 to 13 parts of rhizoma dioscoreae medicine residues, 6 to 15 parts of poria cocos medicine residues, 8 to 18 parts of fructus jujubae medicine residues, 5 to 16 parts of fructus lycii medicine residues, 10 to 25 parts of Xiaoqu fen-flavor liquor vinasse and 1 to 8 parts of brown sugar. The foliar fertilizer disclosed by the invention is obtained by fermentation; the foliar fertilizer contains a large quantity of nutrient elements including amino acids, polypeptides, vitamins and the like and can be used for supplementing nutrient element deficiency caused by various factor influences; the foliar fertilizer can also be used for rapidly balancing the ecology of probiotics in the tea leaves, increasing the plant disease and insect pest resisting capability of the tea trees and improving the quality of the tea leaves; the foliar fertilizer provided by the invention is produced by adopting industrial waste materials; a preparation technology is simple and the production operability is very strong; the planting production cost of puer tea is greatly saved.

The invention discloses a polyurethane resin used for non-solvent leather with high brightness and bending resistance, a preparation method and application. The polyurethane resin used for non-solventleather with high brightness and bending resistance comprises a resin component A and a resin component B; the resin component A comprises 30% to 45% of ether-ester polyhydric alcohol-aromatic polyisocyanates prepolymer; the resin component B comprises 15% to 60% of aromatic diisocyanate. The resin can be used for preparing polyurethane synthetic leather, the synthetic leather is high in brightness and attractive in appearance, the physical and mechanical properties, such as bending resistance, of the synthetic leather are improved preferably, the production operability of the non-solvent synthetic leather in the mass production process is improved, and the matching stability of the resin component A and the resin component B during machining is guaranteed.

The invention provides a lithium ion power battery, which can improve the tab location accuracy while winding an electrode plate, improve the production efficiency and the yield and further improve the cell security. The lithium ion power battery comprises a case with a cylindrical surface, a cell in the inner cavity of the case, an upper cover plate and a lower cover plate on both ends of the cell, and an upper electrode part and a lower electrode part on both ends of the cell. The cell includes an electrode plate assembly formed by arranging and connecting a plurality of positive electrode plates, negative electrode plates and an isolating membrane between adjacent positive electrode plate and negative electrode plate in a winding manner; the cell also includes one or more aluminum rings with a cylindrical structure, wherein the aluminum rings are arranged in the inner cavity of the case to divide the electrode plate assembly into a plurality of sections; and a portion of the electrode plate assembly is located inside the aluminum ring, and the other portion of the electrode plate assembly is sheathed outside the aluminum ring. An aluminum plate for dissipating heat is arranged on both ends of the cell, and is connected with the end part of the aluminum ring.

The present invention relates to a nickel release detection standard substance preparation method, which comprises: uniformly mixing brass powder and nickel powder according to a certain ratio to prepare a pre-smelting raw material; placing the raw material in a graphite crucible, adding a layer of active carbon powder on the surface, and placing into an intermediate frequency induction device; setting an initial induction current to 70+/-5 A, carrying out heat smelting, and maintaining for 3-5 min; reducing the current value to 50+/-5 A, and maintaining for 1-2 min; repeatedly performing the previous steps three times, and carrying out argon gas protection during the processes; increasing the current value to 80 A, heating for 0.5-1 min, and then pouring into a graphite mold to prepare a round bar-like specimen; cutting the specimen into a sheet with phi20*1.3 mm, grinding to achieve a thickness of 1.2 mm and a weight of about 3.0 g; and cleaning the grinded specimen with alcohol, and carrying out hot air drying. The preparation method has characteristics of simple process, strong production operability, easy operation, low cost, easily available raw materials, and easy marketization, wherein the obtained standard substance has good uniformity and good stability.

The invention discloses process holes for back-end procedures in flat-shape covering part stamping production. Each process hole is in a periphery rounded equilateral triangle shape, and the size of each process hole is internally tangent to a circle of phi 3-phi 6. The process holes are used for part precise locating in procedures after trimming and punching and are formed in a supplement part of a drawing process. The number of the process holes is larger than or equal to 2. The invention discloses a locating method of a flat-shape covering part after trimming at the same time. According to the process holes for the back-end procedures in flat-shape covering part stamping production, it is guaranteed that the flat-shape covering part, an automobile engine hood outer plate, is fast and accurately located; locating precision is high; stamping production operation is convenient; product consistency is good; production efficiency is high; product quality is stable; and the product percent of pass is high.

The invention provides environment-friendly dinotefuran microemulsion free of an organic solvent and a preparation method thereof. The environment-friendly dinotefuran microemulsion is prepared from, by weight, 1-10% of dinotefuran, 4-10% of an anionic surfactant, 4-12% of a nonionic surfactant, 0.01-0.04% of a defoaming agent and the balance water. The anionic surfactant is selected from one or more of anionic surfactants with hydrophobic groups coming from vegetable oil hydrolytic or schizolytic linear chain alkyl groups or alkenyl groups and hydrophilic groups coming from carboxyl groups, sulfate groups or sulfonic groups. The nonionic surfactant is selected from one or more of polyoxyethylene ether nonionic surfactants with hydrophobic groups coming from vegetable oil or vegetable oil hydrolytic or schizolytic linear chain alkyl groups or alkenyl groups.

The invention provides an environment-friendly dinotefuran microemulsion which is prepared from the following components in percentage by weight: 1 to 20 percent of dinotefuran , 4 to 10 percent of anionic surface active agent, 2 to 12 percent of non-ionic surface active agent, 5 to 12 percent of ketone solvents with a boiling point above 150 DEG C, 0.01 to 0.04 percent of defoaming agent, and the balance of water, wherein the anionic surface active agent is selected from one or more of anionic surface active agents, wherein the hydrophobic group of the anionic surface active agents is vegetable oil hydrolyzed or pyrolysed linear chain alkyl or alkenyl, and the hydrophilic group of the anionic surface active agents is selected from carboxyl, acidophobe or sulfonic acid group; the non-ionic surface active agent is selected from one or more of polyethoxylated non-ionic surface active agents, wherein the hydrophobic group of the non-ionic surface active agent is vegetable oil or vegetable oil hydrolyzed or pyrolysed linear chain alkyl or alkenyl. The invention also provides a preparation method of the environment-friendly dinotefuran microemulsion.

The invention relates to a permanent magnet motor rotor and a manufacturing method thereof. The permanent magnet motor rotor comprises a rotor core and magnetic steel fixed to the outer circumference of the rotor core. Rotor end covers are fixedly connected with the two ends of the rotor core. The rotor core is formed by first stamped steel and second stamped steel in a laminated mode, and the first stamped steel and the second stamped steel are manufactured in a punched mode. Each rotor end cover comprises an end plate and a magnetic steel positioning part fixedly connected with the end plate, each magnetic steel positioning part is arranged on the outer circumference of the corresponding end plate and fixedly provided with bosses used for identifying the axial position of magnetic steel and positioning ribs used for positioning the radial position of the magnetic steel, and the bosses and the positioning ribs are uniformly distributed on the circumferences of the magnetic steel positioning parts. The permanent magnet motor rotor is adopted for a freezer compressor, so that the rotor speed can be adjusted at will, refrigerating capacity of the compressor can be output, and the purposes of rapid refrigeration and low-speed refreshment of a freezer can be achieved. The permanent magnet motor rotor has the advantages of being high in efficiency, low in noise, suitable for volume production and the like.

The invention relates to the field of alkaline soil treatment, in particular to a green environment-friendly curdlan slow release fertilizer and a preparation method thereof. The green environment-friendly curdlan slow release fertilizer is prepared from curdlan, nutrient elements such as nitrogen, phosphorus and potassium, seaweed extracts, polyglutamic acid, urease inhibitors and nitrification inhibitors by scientific proportioning. The preparation method includes the steps: sequentially adding the seaweed extracts, the polyglutamic acid, the urease inhibitors (sodium phosphate and hydroxamic acid salt) and the nitrification inhibitors (CP, DCD and DMPP) into water in proportion; adding the curdlan and the nutrient elements such as nitrogen, phosphorus and potassium, continuously and uniformly stirring the materials and increasing temperature to reach 85 DEG C; cooling the materials and then chopping the materials into particles with the diameters of about 0.5cm, and drying the materials at the temperature of 90 DEG C to obtain finished products. The curdlan is introduced into slow release fertilizer production and application, the green environment-friendly curdlan slow releasefertilizer is developed by the aid of colorless and odorless properties and irreversible solid formation of the curdlan after heating and by integrating seaweed, the polyglutamic acid and various stabilizing additives, the process is simple, fertilizer effects are comprehensive and lasting, nutrient loss can be remarkably reduced by the prepared slow release fertilizer, and the use ratio of the slow release fertilizer is increased.