211results about How to "Meet the standards" patented technology

The invention provides a low-temperature tough ferrite nodular cast iron of 60 DEG C below zero and a preparation method thereof. The low-temperature tough ferrite nodular cast iron of 60 DEG C below zero comprises the following components in percentage by weight: 3.60-3.80 percent of C, 1.80-2.1 percent of Si, less than 0.08 percent of Mn, less than 0.025 percent of P, less than 0.01 percent of S, less than 0.02 percent of Ti, 0.3-0.7 percent of Ni, 0.03-0.05 percent of Mg residue, less than 0.01 percent of Re residue and the balance of Fe. The preparation method of the low-temperature tough ferrite nodular cast iron of 60 DEG C below zero comprises the following steps: 1, smelting, spheroidizing and inoculating pig iron, waste steel and spheroidized alloy in sequence; 2, pouring molten iron into a cavity from a spheroidizing bag, wherein the pouring temperature is 1,440-1,380 DEG C within 6 minutes from the end time of the spheroidizing treatment to the pouring end time; 3, performing annealing heat treatment on the low-temperature ductile iron of cast iron. The low-temperature ductile iron meanwhile has good toughness at the temperature of 60 DEG C below zero under the condition that high strength is kept, and the standard requirements corresponding to QT400-18AL are met.

The invention discloses an unmanned water sample sampling boat, which is a water quality sampling device. The boat comprises a boat body; the boat body is formed in a manner that a front cabin is combined with a back cabin; the front and back cabins can be folded and are hinged along with folding and unfolding states; a locking mechanism for keeping the front and back cabins in folding and unfolding states is disposed between the front and back cabins; the weight of the front cabin is smaller than that of the back cabin, so that the boat body forms a certain inclined angle along with the horizontal plane when the boat body is in water; and the boat body is loaded with a power system and a sampling system. Due to special design of foldable boat body, the unmanned water sample sampling boat is convenient to carry and transport; adaptability of the unmanned boat can be effectively improved by special design of inclined boat body and tail wheels of the boat; and a sampling pump is disposed in the cabin, so that disturbance of pump vibration on water body is avoided and sampling of samples is prevented being influenced.

The invention relates to a tint high-temperature resistant organic silicon adhesive/sealant, which takes the polysiloxane with the end capped by active functional groups as the foundation, the white carbon soot with the surface going through hydrophobic treatment as reinforcing stuffing, the vapor phase titanium dioxide as a free oxygen consumption agent and the silane coupling agent containing phenyl as a cross linker and combines with proper heat conducting stuffing and catalyst. The silicon adhesive/agent can be solidified at room temperature or rapidly solidified through heating. The product is French grey paste, which allows diversified color matching. The solidified product of the silicon adhesive/agent can endure the temperature as high as 300 DEG C.

The invention discloses environment-friendly building thermal insulation materials. The environment-friendly thermal insulation materials comprise, by weight, 8-12 parts of cement, 12-20 parts of ardealite, 8-10 parts of red mud, 1-2 parts of plaster of paris, 5-8 parts of light calcium carbonate, 10-16 parts of expanded perlite, 0.1-0.2 part of lime crystal, 20-40 parts of pulverized fuel ash, 1-5 parts of liquid water glass, 1-2 parts of polyvinyl alcohol, 6-8 parts of yellow sand, 6-8 parts of lime, 1-2 parts of aluminum powder, 4-8 parts of foaming agents, 5-8 parts of addition agents and the needed water which can prepare the components into mortar.

The invention discloses a production process of caramel color, which is characterized in that procedures such as syrup concentration, caramelization reaction and the like are finished in a reaction kettle in a negative pressure mode; the reaction temperature is 130-160 DEG C; the energy consumption is lower than that of the traditional normal-pressure or low-pressure process; the red index of the obtained caramel color reaches 6.35 or above; the obtained caramel color is favorable in salt tolerance; and the quality of the obtained caramel color is superior to that of a product obtained through the traditional normal-pressure or low-pressure process. According to the invention, the process has favorable repetitiveness; and the product has stable quality, and all the indices meet standard requirements. Thus, the obtained caramel color is an ideal safe colorant in the food industry (especially the seasoning manufacturing industry).

The invention provides an environment-friendly non-chlorine-salt snow melting and deicing agent and a preparation method thereof, and belongs to the field of snow melting and deicing. The environment-friendly non-chlorine-salt snow melting and deicing agent is characterized by comprising the following raw materials in percentage by weight: 60-90 percent of main solvent, 2-20 percent of wetting cosolvent and 2-20 percent of corrosion inhibitor, wherein the main solvent is prepared from 60-90 percent by weight of formate and 10-40 percent by weight of sodium metasilicate; the wetting cosolvent is prepared from 40 percent by weight of sodium borate or calcium nitrate and 60 percent by weight of urea or ammonium carbonate; the corrosion inhibitor is prepared from 60 percent by weight of sodium gluconate and 40 percent by weight of zinc sulfate. According to the environment-friendly non-chlorine-salt snow melting and deicing agent, the common problems of high corrosivity, serious impact on soil structures and the like of common inorganic chlorine salt snow melting agents can be effectively solved; after being used, the environment-friendly non-chlorine-salt snow melting and deicing agent can be naturally decomposed under the natural environment, and the cost of the non-chlorine-salt snow melting and deicing agent is lower than that of other organic salt (like acetates including potassium acetate, calcium magnesium acetate and the like) snow melting and deicing agents; therefore, the environment-friendly non-chlorine-salt snow melting and deicing agent is suitable for being used in places like domestic and overseas roads, airport pavements and streets, and has wide popularization and application prospects.

Provided is anti-bacterial fabric for shoes and a production process thereof. Warp-knitted spacer fabric is adopted and comprises a surface layer for decoration, an inner layer in contact with the skin, and a spacing layer arranged between the surface layer and the inner layer. The inner layer is formed in such a manner that far infrared polyester fibers and chinlon-based cupric ion anti-bacterial fibers are interwoven. The far infrared polyester fibers serve as the spacing layer. In a bacteriostatic test of fabric, the bacteriostasis rate of Candida albicans reaches at 95.76%, the bacteriostasis rate of trichophyton rubrum reaches at 96.96%, the bacteriostasis rate of staphylococcus aureus reaches at 99.23%, and the bacteriostasis rate of colibacillus reaches at 99.99%. The anti-bacterial fabric has composite functions of heat preservation, bacteria prevention, health care, moisture conductivity and perspiration.

The invention discloses a method for preparing granules for curing infantile lung pathogenic heat and cough and asthma. The method comprises the following steps: weighing the following Chinese medicinal materials in part by weight: 30 parts of ephedra, 60 parts of bitter almond kernel, 240 parts of raw gypsum, 30 parts of liquorice root, 100 parts of honeysuckle, 100 parts of weeping forsythiae capsule, 100 parts of anemarrhena root, 100 parts of baikal skullcap root, 100 parts of indigowoad root, 100 parts of dwarf lilyturf tuber and 100 parts of cordate houttuynia; dividing the eleven Chinese medicinal materials into two groups; after performing water extraction on the two groups of Chinese medicinal materials, combining filtrates; mixing an extract prepared by concentrating the filtrate with a proper amount of dextrine and sodium cyclamate; preparing the mixture into granules; and drying the granules to obtain the granules for curing the infantile lung pathogenic heat and cough and asthma. In the method, water use amount in the process of performing water extraction on the Chinese medicinal materials is strictly controlled and extraction in different groups is carried out according to characteristics of different medicinal materials, so compared with a traditional water extraction method, the method has a better effect. The prepared granules for curing the infantile lung pathogenic heat and cough and asthma have stable and controllable quality, and stable baicalin distinguish project which meets requirements of standard. The method greatly improves qualification rate of the product, and has simple operation and is suitable for industrial production.

The invention discloses a method for preparing high-modulus water glass by using fly ash. The method comprises the following steps: 1), mixing the fly ash and a sodium hydroxide solution with the concentration of 20wt.% according to a solid-liquid ratio of 1:2 to 1:4, reacting at 90-100 DEG C for 2-4h, and after completion of a reaction, performing filtering separation to obtain desiliconized ashand a desiliconized solution; 2), performing mixed grinding on the desiliconized ash, the fly ash and sodium salt, and calcinating at 850-900 DEG C for 2-3h; 3), mixing a calcinated product and a hydrochloric acid solution with the concentration of 20wt.%, reacting at 80-90 DEG C for 2-4h, and after completion of a reaction, filtrating and washing by using water to obtain an acid leaching residue,wherein the solid-liquid ratio of the calcinated product to hydrochloric acid is 1:3 to 1:6; 4), mixing the acid leaching residue with the desiliconized solution according to a solid-liquid ratio of1:2 to 1:5, reacting for 0.5-2h while heating at 70-100 DEG C, and then filtering to obtain the high-modulus water glass. The water glass prepared by the method has the modulus of 3.0 or above.

The invention discloses 400-420mm large-thickness low-alloy high-strength constructional steel and a production method thereof. The 400-420mm large-thickness low-alloy high-strength constructional steel comprises the following chemical components in percentage by weight: not more than 0.18% of C, 0.20-0.40% of Si, 1.30-1.55% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.010-0.035% of Als and the balance of Fe and unavoidable impurities. In the invention, refined grain elements of Nb, V, Ti and the like are not added so that the cost of metallurgy and the content of molten steel inclusions are reduced; the processes of normalizing and wind-cooling refined grains are utilized so as to ensure the quality of the products to match the standard and the use requirements. The production processes are simple, and the constructional steel can be produced in batch. In addition, the applied strengthening mechanisms comprise a structure strengthening mechanism, a fine grains strengthening mechanism, a precipitation strengthening mechanism and a solution strengthening mechanism.

The invention provides a method for high-efficiency separation of palladium from a silver electrolyte. The method comprises the following steps: allowing the mass volume concentration of free nitric acid in the silver electrolyte to accord with requirements and heating the silver electrolyte; weighing a high-efficiency palladium removing agent, adding the high-efficiency palladium removing agent into the heated silver electrolyte and successively carrying out a reaction with stirring and vacuum filtration so as to obtain a palladium-removed liquid and a palladium complex; washing the palladium complex; adding the palladium-removed liquid into a silver electrolytic tank and carrying out silver electrolysis so as to obtain silver powder; when the mass volume concentration of palladium in a solution in the silver electrolytic tank is more than or equal to 0.4 g/L, separating palladium from the solution and returning palladium-removed liquid to the procedure of silver electrolysis for refining and cyclic utilization; and when the concentrations of a variety of other impurity ions in the solution in the silver electrolytic tank exceed prescribed limits of the silver electrolyte, extracting out the silver electrolyte, separating palladium out and carrying out treatment of a waste silver electrolyte. With the method, high-efficiency high-selectivity one-step separation of palladium from a complex silver electrolyte can be realized, the deposition rates of metals like silver and copper are extremely low, properties of the solution are not destroyed, the solution can be returned to the silver electrolytic tank for cyclic utilization, and purifying and palladium removal efficiency of the electrolyte can be improved.

The invention provides alkaline powder for treating leaked sulfuric acid and a preparation method of the alkaline powder. The alkaline powder is prepared from a neutralizer, an aid, a heat absorbent, a moisture-proof agent, a dispersant and an indicator in a certain ratio by a specific method. The raw materials for preparing the alkaline powder are readily available; the preparation method is simple, convenient and low in energy consumption; and the prepared powder does not cake, and is low in moisture absorption and good in settling performance after being sprayed. The alkaline powder can be used for effectively treating the leaked sulfuric acid of which the concentration is 50 to 98 percent or more; and the treatment process has the characteristics of high response speed, low temperature rise, secondary harm prevention, simplicity and convenience in endpoint judgment and the like.

The invention provides a preparation method of silane coupling agent modified diabase permeable concrete. The method comprises the following steps: silane coupling agent modified diabase as aggregateis uniformly mixed with cement and a water reducing agent, molding and demolding are performed, and the silane coupling agent modified diabase permeable concrete is obtained. Mechanical properties ofpermeable concrete are obviously improved by SCA modified diabase aggregate, and permeability is decreased to a certain extent. The smaller the particle size of aggregate is, the higher the increase amplitude of strength of the SCA modified aggregate permeable concrete specimen is, and the better the modification effect is; the larger the particle size is, the higher the porosity of the SCA modified aggregate specimen is and the higher the permeability coefficient is. According to comprehensive consideration of requirements of maximum practical economy and ecological benefit of engineering, anSCA solution with concentration of 1% is more appropriate for pretreatment.

The invention discloses a high-strength steel plate Q460GJE-Z35 for an extra-thick high-rise building structure and a production method thereof. The production method comprises the following steps of KR (Knotted Reactor) desulfurization, transferring to a converter, LF (Ladle Furnace) refining, VD (Vacuum Degassing) vacuum treatment, casting, mold cooling for 8 hours after reaching the steel ingot stripping time, cleaning (completion of cleaning within 8 hours), charging and rolling at the rolling temperature, heating, descaling, rolling through a 3,800mm rolling mill, straightening, cooling in heap, external examination, flaw detection, heat treatment, finishing and warehousing. With a rational component design, molded casting, heating and heat treatment, the yield strength of the obtained product is 440-480MPa; the tensile strength of the obtained product is 540-630MPa; the elongation rate of the obtained product is 24-27%; the impact energy of the obtained product at the temperature of -40 DEG C is 136-208J; the Z-direction properties are distributed between 36 and 57; and the mean value of three Z-direction properties of a single sample is more than 40%. The high-strength steel plate Q460GJE-Z35 for the extra-thick high-rise building structure can reach first-level flaw detection by the non-destructive flaw detection according to the JB/T 4730-2005 standard.

The invention relates to a method for recovering phenylacetic acid from waste liquid in preparation of 6-aminopenicillanic acid by an enzymic method. The method comprises the following steps: 1) using toluene to extract phenylacetic acid; 2) preparing a sodium phenylacetate aqueous solution with little impurity; and 3) using macroreticular resin for recovering phenylacetic acid from a water phase containing low-concentration phenylacetic acid. According to the invention, toluene is extracted from waste liquid in preparation of 6-aminopenicillanic acid by the enzymic method, a toluene phase containing phenylacetic acid and a water phase containing low-concentration phenylacetic acid are obtained; the toluene phase containing phenylacetic acid is extracted through alkali lye to obtain the sodium phenylacetate aqueous solution with high quality, the sodium phenylacetate aqueous solution can be directly used for producing penicillin through fermentation; the water phase containing low-concentration phenylacetic acid is pretreated for recovering sodium sulfate, macroreticular resin is used for absorbing phenylacetic acid for recovery, the low concentration water after adsorption can be directly discharged, zero discharge of phenylacetic acid can be almost realized, win-win of economy and environmental protection can be achieved, the by-product sodium sulfate can be used for fermentation, and also has economic benefit.

The invention provides instantly soluble deer glue radix astragali powder and a preparation method thereof, and mainly solves the problems of inconvenience of eating, poor dispersion, poor instant solubility and poor taste of ordinary deer glue. The instantly soluble deer glue radix astragali powder is prepared from the following components: by weight, 100 parts of deerskin glue, 10-20 parts of yellow wine, 2-4 parts of beta-cyclodextrin, 1.6-2.4 parts of twain 20, 1.2-2.0 parts of distilled glycerin monostearate, 12 - 20 parts of non-dairy creamer, 16 - 24 parts of malt dextrin, 16 - 24 parts of crystal sugar powder, 0.05 - 0.15 part of protein sugar, 0.2 - 0.3 part of ethyl maltol and 30-40 parts of radix astragali extract powder. The invention also provides the preparation method of the instantly soluble deer glue radix astragali powder. The instantly soluble deer glue radix astragali powder has blood replenishing and face nourishing effects of the deerskin glue, has additional qi invigorating and immunity improving effects of radix astragali, is less in production equipment investment, is simple and feasible in process, stable in product performance, is convenient to eat, provides new health-care face-nourishing food for the vast number of consumers, and has remarkable social benefits and economic benefits.

The invention discloses a method for measuring the depth of parallelism of two planes. The method is utilized to measure the longitudinal depth of parallelism of a front workbench and a rear workbench of a woodworking planning machine, and the method is accurate in measurement, high in accuracy, simple in operation, economical and applicative. The method is realized through the following technical scheme: the rear workbench of the woodworking planning machine is used as a datum plane, the front workbench is used as a measured plane, and the front workbench and the rear workbench are respectively divided into a plurality of measuring points with an equal interval A; indicating values are obtained by the measuring points of the rear workbench, the accumulated values of corresponding indicating values are calculated, an error curve L of the rear workbench is drawn, and the head point A and the tail point B of the error curve are connected to form a datum line AB; indicating values are obtained by the measuring points of the front workbench, the accumulated values of corresponding indicating values are calculated, and an error curve M of the front workbench is drawn; then the high vertex and the lower vertex of the curve M are respectively passed to form a parallel line parallel with the datum line AB, and the coordinate distance f in a z direction between the two parallel straight lines is the error value of the longitudinal depth of parallelism of the front workbench and the rear workbench conforming to the examination requirement.

The invention provides cefotiam hydrochloride/anhydrous sodium carbonate medicinal composition suspension injection and new use thereof. The preparation is prepared from 166 to 282.2 weight parts of biodegrading agent, 6.64 to 26.56 weight parts of emulsifying agent, 9.96 to 26.56 weight parts of stabilizer, 13.28 to 49.8 weight parts of additive, 83 weight parts of cefotiam hydrochloride and 17 weight parts of anhydrous sodium carbonate. The invention further discloses new use of the cefotiam hydrochloride suspension injection for treating subacute thyroiditis in clinic.

The invention discloses an integrated safe driving device. The integrated safe driving device comprises a driving motor, a speed reduction box, a main driving shaft and a bearing seat which are pre-integrated and in sequential transmission fit, wherein the bearing seat is arranged at the end, far away from the speed reduction box, of the main driving shaft, installation positions for being fixed to a truss are arranged at the bottoms of the speed reduction box and the bearing box, and an output gear of the speed reduction box and the main driving shaft are positioned through tightly matched conical surfaces. The invention further provides an installation method of the integrated safe driving device. The driving motor, the speed reduction box, the main driving shaft and the bearing seat are pre-integrated, installation of the driving device is facilitated, installation difficulty is reduced, installation accuracy is improved through matching of the conical surfaces, installation efficiency is guaranteed, and products meet national standards and have large market prospects.

The invention discloses a large current over-voltage and under-voltage surge testing device which solves a problem that conventional domestic and overseas over-current and under-voltage surge test equipment is incapable of large current surge tests because of low rated current by using a fast large-current aviation relay, a wiring board and three diodes. Further, the large current over-voltage and under-voltage surge testing device may provide correct waveforms complying with a standard request and effectively eliminates peak interference signals generated during the contactor contact conversion. The device can also be applied to a power transient interruption test system.

The invention discloses an anti-senile beauty-nourishing traditional Chinese medicine composition, which is prepared from the following components in parts by weight: 1 to 30 parts of rhizoma dioscoreae, 1 to 30 parts of common bletilla tuber, 1 to 30 parts of radix angelicae, 1 to 30 parts of fructus rubi, 1 to 30 parts of black wolfberry fruit, 1 to 30 parts of white poria cocos and 1 to 30 parts of black mulberry fruit. The traditional Chinese medicine composition provided by the invention is reasonable in compatibility, by combining many years of clinical application, and taking the advantage of homology of medicine and food, the composition meets national standard and sanitary requirement, and is healthy, safe and harmless to human bodies.

The invention provides a high-Mn and high-Nb anti-crack-defect nickel-based welding wire and a welding method. The high-Mn and high-Nb anti-crack-defect nickel-based welding wire comprises, by weight, less than 0.04% of C, 0.10-0.20% of Si, 3.8-4.2% of Mn, less than 0.003% of S, less than 0.003% of P, 28.0-31.5% of Cr, less than 0.01% of Mo, less than 0.05% of Cu, 2.2-2.5% of Nb, 0.4-0.9% of Ti, less than 0.50% of Al, 8.5-10.5% of Fe, less than 0.005%of Ca, less than 0.005% of Mg, less than 0.005% of O, 0.20-0.40% of N, less than 0.001% of B, less than 0.005% of Zr, less than 0.02% of Ta, and the balance of Ni, wherein the sum of the Mn and Nb is 6.2-6.6%; the sum of other impurity elements is less than 0.10%. The welding wire is suitable for welding of nuclear island main equipment (including bead welding of pressure vessel drive tube sockets, connection tube safety ends, reactor core bearing blocks and steam generator tube plates and welding of tubes and tube plates), and the problem that an existing welding wire is prone to having a crack defect under the field welding and other severe conditions is solved.

The invention relates to a novel method for preparing broad-spectrum penicillin antibiotic ticarcillin sodium. The method is characterized in that the method comprises the following steps of: (1) directly carrying out chlorination on 3-thiophenemalonic acid used as raw material and thionyl chloride in the presence of a catalyst, without protecting carboxyl, and chloridizing one carboxyl to obtian a compound (II); (2) carrying out condensation reaction with 6-aminopenicilanic acid (6-APA), controlling the reaction temperature and pH value, dripping the compound (II) and sodium bicarbonate solution, dispensing liquid after reaction, adjusting pH value to wash, adjusting pH value again to 2.0, extracting reaction solution, and drying to obtain a compound (IV); using sodium iso-octoate to salify, and refining crude products, to obtian the ticarcillin sodium salt.

The invention discloses a thermal treatment method for a composite board, and belongs to the technical field of thermal treatment. The thermal treatment production method comprises the following process steps: welding a connecting plate; polishing a welding joint and a welding spot; carrying out shot blasting treatment on the composite board; heating the composite board in a thermal treatment furnace; carrying out water-cooling on the composite board; re-reddening the composite board; cooling the composite board; cutting off a connecting plate; and the like. The thermal treatment method disclosed by the invention is utilized to produce a pipeline steel composite board with high performance and a high additional value, so that not only is limitation of enabling a direct rolling composite process to reach mechanical performance index supplemented, but also control on the plate shape of a steel plate in a thermal treatment process is sufficiently considered, and therefore, various performance indexes of a base layer and a coating reach standard requirements, and equipment operation safety is higher.

The invention discloses a high-refractive index low-dispersion lanthanide optical glass NZLaF30, wherein, based on weight percentage, the glass comprises 5.5-10.0 percent of SiO2, 9.5-12.5 percent of B2O3, 41.0-54.0 percent of La2O3, 4.0-7.5 percent of ZrO2, 0.5-5.0 percent of Nb2O5, 11.0-19.5 percent of Ta2O5, 0-15.0 percent of Gd2O3, 0-3.0 percent of Y2O3, 0-3.0 percent of ZnO, and 0-1.0 percent of TiO2. The high-refractive index low-dispersion lanthanide optical glass NZLaF30 has good crystallization and molding properties, and the optical constants (nd, vd) of the glass are in line with the standard requirements; the bubble of the glass reaches grade a; the glass has no stripes.