1105 results about "Post treatment" patented technology

The invention discloses a hydrophobic-hydrophilic Janus water collecting film and an efficient preparation method thereof, and belongs to the field of water collecting materials. An electrostatic spinning process is adopted, and a hydrophobic polymer is accurately deposited on the surface of a hydrophilic substrate in the form of a nanofiber array, so that the Janus composite membrane with an asymmetric wetting gradient structure is successfully constructed. The unique double-sided wettability difference drives the liquid drops to realize directional transmission, and the core mechanism of the liquid drops is derived from capillary force regulation and control caused by interfacial wetting potential energy difference. The Janus membrane shows excellent performance in the aspect of air moisture trapping, the ultra-fast moisture absorption characteristic and the surface regeneration capacity are achieved, and compared with a traditional single-layer hydrophilic membrane, the water collecting efficiency is remarkably improved by 110%. A one-step forming process is adopted for preparation, the diameter of the nanofibers is controllable, complex post-treatment procedures are not needed, and energy consumption required by equipment is low. The high-performance water collecting film has important application value in the fields of atmospheric water taking in arid regions, dehumidification of precise instruments and the like.

The invention relates to a water treatment system for removing PFOA (perfluorooctanoic acid) in soil washing wastewater through electrooxidation coupled hydrogen peroxide reduction and application, CF / FeCo-N-C with high H2O2RR activity is prepared as a cathode to replace the traditional HER cathode reaction, the cathode potential is improved, the cathode polarization is reduced, and the input voltage and energy consumption of the system are reduced. Besides, the water treatment system is used for electrooxidative degradation of actual PFOA-containing soil washing wastewater, and compared with the prior art, the water treatment system has the advantages that the theoretical value of cathode potential can be increased from 0V vs.RHE of HER to 1.78 V vs.RHE, the ultra-low thermodynamic equilibrium potential of 1.02 V is achieved, deep treatment of the PFOA-containing soil washing wastewater is achieved, energy consumption is remarkably reduced, and the method is suitable for industrial production. New theoretical insight and practical significance are provided for sustainable treatment of PFOA-containing soil washing wastewater, and a new technical mode is provided for a post-treatment stage in soil remediation.

The invention provides a multiphase collaborative purification intelligent treatment system for heavy metal wastewater, which relates to the technical field of wastewater treatment and comprises a pretreatment module, a main treatment module, an advanced treatment module, a post-treatment and recycling module, a sludge treatment module and an intelligent control module. The intelligent control module comprises a data acquisition layer, a control layer and a management layer, and intelligent control on each treatment module is realized by monitoring parameters such as pH value, ORP (oxidation-reduction potential), conductivity and heavy metal ion concentration of the wastewater on line. The data acquisition layer acquires processing parameters in real time through various sensors; the control layer executes control logic based on the PLC / DCS and monitors the operation state through SCADA (Supervisory Control And Data Acquisition); the management layer adopts AI algorithms such as a water quality-energy consumption correlation regression model and a time sequence water quality fluctuation learning model to optimize processing parameters. According to the system, the treatment process can be intelligently adjusted according to the characteristics of the wastewater, the maximization of the heavy metal wastewater treatment efficiency, the minimization of chemical consumption and the minimization of energy consumption are realized, and the treatment effect and the system stability are improved.

The invention particularly relates to printing and dyeing wastewater advanced treatment equipment and a method thereof. The equipment comprises a pretreatment unit, an electrolysis unit, a pH regulation unit, a post-treatment unit and a comprehensive monitoring unit, the pretreatment unit comprises a physical filtering device and an advanced oxidation pretreatment device and is used for removing suspended solids and macromolecular organic matters; the electrolysis unit is provided with a current control module and a salinity adjusting module and is used for degrading organic pollutants and disinfecting and sterilizing; the pH adjusting unit is provided with a pH sensor and a pH correction pump and is used for accurately controlling the pH value change in the treatment process; the post-treatment unit comprises an ultrafiltration membrane and activated carbon and is used for removing residual micromolecular organic matters and trace heavy metal ions; the comprehensive monitoring unit integrates a PLC controller, a data acquisition module and a communication interface, and is used for realizing automatic management and remote monitoring of the system.

The invention belongs to the field of rail manufacturing, and specifically discloses a manufacturing method for improving the low temperature fracture resistance and contact fatigue damage resistance of rails and the rails obtained thereby. The method comprises the following steps: converter smelting, LF refining, RH vacuum treatment, billet continuous casting, billet cleaning and cooling, billet heating, rail rolling, online heat treatment and post-treatment, wherein: during the converter smelting process, bottom blowing of nitrogen is performed; after the RH vacuum treatment, iron-calcium wire feeding treatment is performed. Calculated by mass percentage, the chemical composition of the steel billet includes: C: 0.50-0.65%, Si: 0.45-0.95%, Mn: 0.35-0.85%, Cr: 030-0.80%, Cu: 0.20-0.55%, Ni: 0.10-0.30%, N: 0.007-0.030%, and the chemical composition of the steel billet also includes at least one of V, Nb, and Ti, wherein V: 0.02-0.15%, Ti: 0.001-0.030%, Nb: 0.01-0.08%, and the rest is Fe and unavoidable impurities. The steel rail obtained by the method provided by the present invention has excellent comprehensive properties such as resistance to low-temperature fracture, resistance to contact fatigue, corrosion resistance and weldability.

The invention belongs to the technical field of nickel electrode slurry preparation, discloses a preparation process of ultra-fine particle size roll-printed nickel electrode slurry for an ultra-high capacity MLCC, and aims to solve the problems that in the prior art, ultra-fine nickel powder is easy to oxidize, the cost of covering nickel nitride powder is high, a covering layer is easy to damage and agglomerate during dispersion, and the performance of the slurry is poor. The method comprises three steps of raw material pretreatment, synchronization of material dispersion and nitridation, post-treatment and nitrogen protection, wherein the pretreatment is used for removing impurities and preventing oxidation, dispersion and nitridation are carried out synergistically through a sand mill and an ultrahigh-pressure homogenizer in a graded regulation and control mode, the post-treatment comprises filtering, inspection and double-layer vacuum packaging, the raw materials are prepared according to a specific proportion, key parameters are precisely regulated and controlled, and finally the slurry is prepared. Roll printing adaptability and co-firing requirements are met, independent nitridation and reduction procedures are omitted, cost is reduced, slurry uniformity, dispersion stability and MLCC reliability are improved, and large-scale mass production can be achieved.

The invention relates to the technical field of high-level liquid waste evaporation in nucleation post-treatment and nucleation glass curing, in particular to a liquid waste evaporation end point automatic judgment method and a liquid waste evaporation control method and device. The method comprises the following steps: acquiring waste liquid parameters of an evaporation system before evaporation and target parameters of waste liquid in a kettle type evaporator after evaporation; determining the target liquid level in the stock solution tank after evaporation according to the mass of the standard substance before evaporation calculated according to the waste liquid parameters, the target parameters of the waste liquid and the mass conservation of the standard substance before and after evaporation; according to the method, the mass of the standard substance of the waste liquid in the evaporation process is analyzed, and the evaporation end point is determined through mass conservation of the standard substance before and after evaporation, so that the evaporation end point can be automatically determined by analyzing the parameters of the waste liquid in the evaporation system, and the efficiency of the evaporation system is improved. Meanwhile, the evaporation end point is determined based on mass analysis and calculation of the target substance, so that the determination of the evaporation end point is more accurate.

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.

The invention discloses a process for improving anodic oxidation consistency of an anode foil for an aluminum electrolytic capacitor, and relates to the technical field of capacitor manufacturing, and the process comprises the steps of multi-stage washing, etching, feeding, multi-stage formation, intermediate treatment, first post-treatment, roasting, second post-treatment, stability treatment, drying, rolling, inspection and packaging. Wherein the multi-stage formation adopts three-stage oxidation of low-temperature and low-current, medium-temperature and medium-current and low-temperature and high-current, so that an oxidation film forms a base layer, a growth layer and a high-density protection layer which are uniformly overlapped layer by layer, and the consistency and compactness of the oxidation film are synergistically improved through dynamic water washing, air drying and temperature field and fluid field regulation and control technologies; the oxide film is repaired through first post-treatment, the pore size of the oxide film is reduced, and the compactness of the oxide film is improved; and high-temperature roasting is combined, and a second post-treatment step is carried out, so that the oxidation film forms an aluminum oxide crystal structure which is stable, high in hardness and compact in structure, and the water resistance and reliability of the finished anode foil are enhanced.

The invention discloses an industrial wastewater resource regeneration treatment system and a process thereof. The process comprises the following steps: 1) pretreatment; 2) precipitating and filtering; 3) aeration treatment; (4) post-treatment; the industrial wastewater resource regeneration treatment system comprises an aeration tank, a scum collecting device, a residue collecting device and a stirring device, the scum collecting device is connected with the sliding chute in a sliding manner, and the residue collecting device is arranged below the scum collecting device; the stirring device is arranged below the aeration tank, and the bottom of the aeration tank is fixedly connected with an aerator; the aeration range of the wastewater can be expanded while the wastewater and the medicament are stirred and mixed through the stirring device, so that the wastewater treatment rate of the device is improved; meanwhile, the scum collecting device and the residue collecting device are matched to clean scum, so that the scum is prevented from remaining. While the aeration treatment process of the wastewater is accelerated, dross on the water surface can be cleaned through cooperation of multiple groups of mechanisms, and the situation that the subsequent wastewater treatment procedure is affected due to dross residues is prevented.

The invention discloses an anti-corrosion treatment process for a transformer oil tank. The anti-corrosion treatment process comprises the following steps that S1, the surface of the oil tank is pretreated; step S2, coating a primer; s3, intermediate paint is coated; step S4, coating a finishing coat; and S5, coating post-treatment is carried out. By selecting high-performance anti-corrosion paint and a reasonable coating process, the anti-corrosion performance of the surface of the transformer oil tank is remarkably improved, erosion of various corrosion factors can be resisted for a long time, and the anti-corrosion performance is excellent; an air spraying method is adopted, so that uniform distribution of a coating on the surface of the transformer oil tank is ensured, and the problem that the anti-corrosion effect is reduced due to non-uniform coating is avoided; through surface pretreatment and selection of a high-adhesive-force coating, the binding force of the coating and a transformer oil tank base material is enhanced, and the durability and reliability of the coating are improved; the process adopts a mechanical coating method, so that the construction efficiency is improved, the labor intensity is reduced, and the construction efficiency is high.

The invention relates to the technical field of sewage treatment, and discloses a novel sulfur autotrophic denitrification filter material and a preparation method and application thereof.The particle size of the filter material is 3.0-4.0 mm, and the filter material is prepared from 40%-45% of a composite sulfur source, 70 + / -2% of sulfur and 30 + / -2% of sodium thiosulfate, 30%-35% of modified ceramsite, 50-100 [mu] m / 200-300 [mu] m of bimodal pore size and 8%-10% of a conducting medium. The ratio of graphene to biochar is 3: 1), a buffer medium (5%-7%, Fe2O3 (52% + / -2%), CaCO3 (31% + / -2%) and MgO (17% + / -2%), a binder and an inert filler. The preparation method comprises the steps of raw material pretreatment, mixing granulation, stepped calcination, gradient impregnation, buffer medium directional loading, post-treatment and the like. The filter material solves the problems of by-product accumulation, insufficient microbial adhesion, large pH fluctuation and blockage of a traditional filter material through gradient sulfur release, a three-dimensional electron transfer network, a multistage pore anti-blockage design and a composite pH buffer system, is suitable for sewage denitrification treatment, and is high in denitrification efficiency and good in stability.

The invention discloses a vacuum negative pressure vibration assisted precision casting forming method. The method comprises the steps of model preparation, sand box and dry sand pretreatment, layered vibration sand filling, film covering vacuumizing, molten metal smelting and purification treatment, negative pressure vibration pouring, pressure maintaining solidification, segmented temperature control and pressure relief box opening and multi-stage cleaning aftertreatment. The core of the method is that mechanical vibration and a vacuum negative pressure technology are deeply coordinated and penetrate through the whole process of modeling, pouring and solidification, and meanwhile, a series of fine control means such as dry sand accurate pretreatment, molten metal rotary blowing degassing and instantaneous inoculation, stepped negative pressure control, temperature-related segmented pressure relief and two-stage shot blasting cleaning are matched; through dynamic cooperation of vibration and negative pressure, the sand mold compaction uniformity, the molten metal mold filling capacity and the solidification feeding effect are remarkably improved, the casting defects of air holes, shrinkage porosity, insufficient pouring and the like are effectively reduced, and the internal density, the size precision and the surface quality of a casting can be remarkably improved.

The invention discloses titanium-containing high-manganese ultralow-temperature steel as well as a preparation method and application thereof. The ultralow-temperature steel comprises the following chemical components in percentage by weight: 0.35%-0.55% of C, 0.11%-0.22% of Si, 22.5%-25.5% of Mn, less than or equal to 0.02% of P, less than or equal to 0.005% of S, 3%-4% of Cr, 0.03%-0.1% of Ti, 0.01%-0.1% of Alt, 0.0003%-0.005% of Ca and the balance of Fe and other inevitable impurities. Chemical elements are combined with rolled steel, the low-temperature strength and corrosion resistance of the steel plate at the temperature of-269 DEG C are emphatically improved, precious metal elements such as Ni, Mo and Cu and post-treatment procedures are omitted, and the steel plate has excellent ultralow temperature resistance and economical efficiency; the device has application prospects in storage and transportation of liquefied ethylene, liquefied natural gas, liquid hydrogen, liquid helium and other ultralow-temperature media in land, ocean, aviation and other complex environments.

The invention belongs to the technical field of water treatment, and particularly provides a nitrogen-oxygen co-doped hypha / spruce composite adsorption material and a copper-containing sewage treatment method. According to the invention, the copper-containing sewage is pretreated by using the solid fermentation product, and then the copper-containing sewage is post-treated by using the nitrogen-oxygen co-doped hypha / spruce composite adsorption material prepared under specific conditions; wherein in the pretreatment stage, microbial metabolites in a solid fermentation product preliminarily capture free copper ions (Cu < 2 + >) through complexation, the toxicity of the sewage is reduced, and meanwhile, the copper ions are partially converted into a form which is easier to adsorb. In the post-treatment stage, the nitrogen-oxygen co-doped hypha / spruce composite adsorption material plays a key role, and efficient interception and adsorption of copper ions are achieved. In conclusion, the treatment method for the copper-containing sewage comprises a pretreatment stage and a post-treatment stage, the two stages are in synergistic interaction, and finally the removal rate of the heavy metal copper can be effectively increased.

The invention belongs to the technical field of water resource recycling, and discloses a water resource recycling system and a control method, the water resource recycling system comprises a domestic sewage pretreatment system, a rainwater pretreatment system, an industrial wastewater pretreatment system, a main treatment system and a post-treatment system; the domestic sewage pretreatment system, the rainwater pretreatment system and the industrial wastewater pretreatment system are respectively connected in parallel to the main treatment system through a multi-channel pipeline, and the other end of the main treatment system is connected to the post-treatment system through a pipeline. When the system is used, domestic sewage, rainwater or industrial wastewater can be independently treated, the domestic sewage, the rainwater or the industrial wastewater can also be treated at the same time, and the system has multiple treatment modes and can meet different treatment conditions for treatment. The treatment process and equipment are reduced on the whole, the treatment time is saved, the occupied area of the equipment is reduced, and the treatment and recovery effects on different types of water resources are improved.

The present invention addresses the problem of providing a processing liquid for a semiconductor device, said processing liquid having excellent corrosion resistance with respect to a metal-containing layer, excellent removability of an object to be removed, and excellent solubility in a post-processing liquid. The present invention also addresses the problem of providing a method for processing a substrate using the processing liquid. This processing liquid for a semiconductor device contains water, a remover, and a copolymer, the copolymer having a first repeating unit having at least one group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium cation, and a second repeating unit different from the first repeating unit.

The invention relates to the technical field of plastic molding and treatment, and discloses a molding processing and post-treatment process of low-odor plastic, which comprises the following steps: extruding a plastic melt containing volatile components into a to-be-cut material strip, pelletizing in a pelletizing area by using a pelletizing device, and synchronously adjusting the pulse spraying frequency to adapt to the pelletizing frequency, an alternating stress field is induced on the surface layer of a material strip through periodic cold impact and mechanical vibration, a micro-crack structure is formed on the surface layer of plastic particles by controlling the particle size of atomized liquid drops, an exhaust channel for volatile component escape is constructed, and then the plastic particles are conveyed to post-treatment equipment for volatile component removal. A solid diffusion process blocked by a skin layer is converted into a physical inrush flow along a microcrack channel, so that a mass transfer energy barrier is reduced, efficient removal of peculiar smell components is realized, and thermal degradation and yellowing of particles are avoided.

The present invention provides a kind of spherical gold powder and preparation method thereof, relate to the technical field of precious metal powder preparation, the preparation method uses aqua regia to prepare chloroauric acid solution, and uses concentrated hydrochloric acid to adjust pH to 1.5-2, then adds ammonia water to adjust pH to 7-9, stirs 20-60s, then adds concentrated hydrochloric acid to adjust pH to 1.2-2 again, obtains mixed solution B;Then, the first dispersant solution is poured into the aforementioned mixed solution B, after stirring evenly, the mixed solution A of the second dispersant and the reducing agent is quickly added, after stirring reaction, sedimentation, post-treatment, obtains spherical gold powder. Wherein, spherical gold powder of different sizes with a particle size within the range of 0.3-4 μm can be prepared by adjusting pH twice, and adding two different dispersants in a specific order of addition can make the prepared spherical gold powder uniform in particle size, good in dispersibility, regular in shape and smooth in surface. The preparation method reacts rapidly, the process is short and stable, and it has been stably expanded to 500g, which can realize large-scale industrial production.

The invention relates to the technical field of electrochemical water treatment, and discloses a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment method and a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment system. The method comprises the following steps: collecting water quality parameters of the high-salt waste liquid and initial electrochemical impedance spectroscopy parameters of a polar plate; calculating the initial current density according to the hardness and the conductivity, carrying out electric flocculation treatment, monitoring impedance spectrum change in real time, identifying the scaling type, and predicting the residual operation time of the polar plate; the current density is optimized according to the prediction time, and the residual hardness is calculated; and adjusting electrodialysis parameters by taking the residual hardness as a feedforward signal for concentration, and performing bipolar membrane electrodialysis on the concentrated solution to obtain acid-alkali liquor. The problems that in the electrochemical treatment process of the high-salt waste liquid, the state of a polar plate cannot be monitored in real time, consequently, operation parameters are adjusted blindly, and energy consumption is high and the recycling efficiency is low due to the fact that parameters of a pretreatment unit and parameters of a pretreatment unit are not linked are solved.

The invention relates to the field of medicine synthesis and preparation, in particular to a synthesis method of toxyanib phosphate. The use amount of acetic acid is greatly reduced in the preparation process, so that excessive acid does not need to be neutralized in the post-treatment process, and a large amount of wastewater is not generated; in addition, the use amount of sodium nitrite is reduced, and the environment and health are facilitated; the enamine reduction reaction does not use acetic acid as a solvent and a hydrogenation reaction catalyzed by heavy metal palladium, so that the safety of the reaction is improved, and the purity of the product is also improved; a decarboxylation reaction and a Vilsmeier-Haack reaction are carried out by a one-pot method, so that the reaction steps are reduced, and the product purity is improved; when aldol reaction is carried out in side chain splicing, side reaction and generation of isomer impurities are reduced. The method is short in route, mild in reaction condition, low in equipment requirement and convenient to operate, industrial production is easy to achieve, and a complex purification method is not needed.

The invention discloses a preparation method and application of a platinum-copper cross-linked nanowire, and the method comprises the following steps: preparing a platinum precursor solution and a copper precursor solution, injecting into an aqueous solution, and uniformly mixing; taking a freshly prepared sodium borohydride aqueous solution as a reducing agent and a hydrogen source, quickly injecting into the mixed solution, reacting in a low-temperature water bath for several hours, collecting black precipitates at the bottom of a reaction container, and centrifugally washing with a water-alcohol mixture to obtain the platinum-copper cross-linked nanowire. The scheme is carried out in an aqueous solution without a surfactant, the surface of the prepared nanowire is clean, the post-treatment is simple, and the diameter of the prepared platinum-copper cross-linked nanowire can be 4-5nm; the platinum-copper cross-linked nanowire can be applied to electro-catalysis methanol oxidation reaction, and has high activity, good carbon monoxide poisoning resistance and good stability.

The invention belongs to the technical field of metal surface treatment, and discloses a high-uniformity metal surface silver plating process and a corrosion-resistant treatment method thereof.The high-uniformity metal surface silver plating process comprises the following steps that firstly, pretreatment is conducted; step 2, activating treatment; step 3, pre-plating a bottom layer; step 4, electrosilvering; step 5, post-processing; according to the method, pre-plating of the bottom layer and electroplating of silver are combined, a layer of thin nickel or copper is pre-plated firstly, and then electroplating of silver is performed, so that the binding force and uniformity of the silver plating layer are effectively improved, and in the electroplating process, the mode of stirring and circulating the electroplating liquid is adopted, so that silver ions in the electroplating liquid are uniformly distributed, and the uniformity of the plating layer is improved; and a thin aluminum oxide protective film is deposited on the surface of the silver plating layer by adopting a chemical vapor deposition technology, so that the corrosion resistance of the silver plating layer is further improved.

The invention relates to the technical field of rubber processing post-processing, in particular to environment-friendly material rubber processing post-processing equipment which comprises a packaging machine main body, a conveyor main body installed on the front portion of the packaging machine main body and a conveying belt rotationally arranged on the conveyor main body, and a rubber sheet is attached to the edge of the front portion of the upper surface of the conveying belt. A winding roller is tightly attached to the position, close to the rear edge, of the upper surface of the conveying belt, and limiting plates are fixedly connected to the positions, corresponding to the winding roller, between the two side walls of the conveyor body in a front-back symmetry mode. By means of the equipment, rubber sheets can be wound, bundled and then packaged, so that a large amount of consumption of packaging bags can be reduced, meanwhile, the rubber sheets do not need to be wound and bundled manually, the labor burden of workers is relieved, the speed is higher than that of manual work, and the production efficiency is improved. And the compactness and the flatness of the wound and bundled rubber sheets can be unified, so that good packaging quality is ensured.

The invention relates to a preparation method of soybean oil base polyhydric alcohol, in particular to a method for preparing soybean oil base polyhydric alcohol by directly using soybean oil. The soybean oil diluted by using a solvent reacts with hydrogen peroxide with the weight percentage being 30% for 2-5 hours at the temperature of 60-70 DEG C under catalysis of a catalyst with the weight percentage being 3-5%; vacuum distillation is conducted after the reaction is ended, and the solvent is evaporated; then low alcohol is added in a reactor to be subjected to a reaction for 4-6 hours under the pressure of 0.3-0.4 MPa and at the temperature of 70-80 DEG C, then the reaction is stopped, and the soybean oil base polyhydric alcohol is obtained. The method saves the using amount of hydrogen peroxide, reduces the post-treatment steps, and simplifies the production procedures, and accordingly the product cost is declined directly.

The utility model relates to a system for testing chlorine oxidation resistance of a plastic pipe in a high-temperature internal-pressure fluid, which comprises a pretreatment device, a temperature control device and a control device, the pressure pump is used for receiving the preheated fluid and boosting the pressure of the preheated fluid; the heating device is used for reheating the pressurized and preheated fluid to 100 DEG C or above; the constant-temperature test device is provided with a test box body, and a plurality of test pipe fittings are arranged in the constant-temperature test device along the vertical direction; and the post-treatment device is used for cooling the high-temperature internal pressure fluid from the constant-temperature test device, and the cooled fluid is circulated to the pretreatment device through a pipeline. The system can ensure that the temperature breaks through the limitation of 100 DEG C while the water solution entering the plastic pipe is kept in a liquid state, realizes automatic water replenishing and real-time monitoring and control on the temperature, pressure, pH, ORP and residual chlorine of the test fluid, and realizes one-key starting unmanned intelligent operation.

The invention discloses an automatic treatment device and method for metal workpiece surface polishing and application. According to the automatic environment-friendly electrochemical polishing device, the workpieces are automatically transferred through the automatic conveying device, automatic connection of all the procedures is achieved, and the automatic environment-friendly electrochemical polishing process of the metal workpieces such as the pure magnesium workpieces is achieved; and compared with the prior art, only water is used as a cleaning medium in the whole process, and toxic and harmful chemical agents are not needed. The environmental pollution risk is greatly reduced, and the environmental protection requirement is met. The environment-friendly polishing solution is adopted for electrochemical polishing, core components of the polishing solution are biodegradable non-toxic reagents such as ethyl alcohol and glycerinum, waste liquid treatment is simple, zero liquid discharge can be achieved, and the difficulty and cost of waste water treatment are remarkably reduced. According to the invention, the process flow is simplified, the consumption of chemicals and pollution emission are reduced, and the process efficiency is improved. According to the invention, whole-process monitoring and automatic operation from pretreatment to post-treatment are realized, the production efficiency and consistency are improved, and the method is suitable for industrial large-scale application.

The invention discloses a synthesis process and application of a viscosity-reducing admixture for machine-made sand, and relates to the technical field of nano modification. The process comprises the following steps: preparing a nano composite dispersion: mixing nano SiO and carboxylated nano cellulose, adding polyether phosphate as a dispersing agent, and performing high-pressure homogenization treatment to prepare the stable nano composite dispersion; low-temperature gradient polymerization reaction: under the protection of nitrogen and at the low temperature of 5-10 DEG C, dropwise adding monomers in three stages to carry out polymerization reaction; and a post-treatment process: adding an organic silicon defoaming agent, and carrying out vacuum defoaming treatment to obtain a final product. The mixing amount of the admixture is only 0.2-0.5% of the mass of cement, the viscosity of the machine-made sand concrete can be remarkably reduced, the fluidity is improved, and the construction performance and the concrete quality are improved. The method is characterized in that the rheological property is optimized by utilizing a nano modification technology, a low-temperature polymerization process is adopted, and the method is energy-saving, environment-friendly and suitable for large-scale industrial production.

The invention relates to the technical field of metal processing, and discloses a hot press molding process for metal product manufacturing, which comprises the following procedures: S1, raw material preparation, S2, mold design and manufacturing, S3, preheating treatment, S4, hot press molding, S5, cooling and demolding, S6, post-treatment and S7, packaging and storage.The process can improve the product quality, and the product quality is improved through strict raw material preparation; according to the die, impurities are removed, the size precision is ensured, a foundation is laid for high-quality products, the shape and size precision of the products is ensured, the consistency and reliability of the products are improved, the hot-press forming process is optimized, the temperature, pressure and time are accurately controlled, a die cavity is fully filled with metal materials, internal defects of the products are reduced, and the product quality is improved. The mechanical property of the product is improved, meanwhile, the production efficiency is improved, the hot press forming difficulty is reduced through the reasonable preheating treatment and the segmented pressurizing and heating mode, and the forming speed is increased.

The invention discloses a coal slime water sedimentation treatment method based on dynamic agent addition and intelligent monitoring. The method comprises the following steps: sample collection and pretreatment; pre-preparing a medicament and testing the suitability; adding a dynamic agent; the sedimentation process is optimized; real-time monitoring and feedback control are carried out; and treating after settling and recovering clear liquid. By monitoring the turbidity and the settling time of the slime water in real time and dynamically adjusting the dosage of the medicament, the problems of over-high medicament consumption and non-uniform settling effect caused by fixed medicament dosage in the prior art are effectively solved. And through precise medicament management, the medicament cost is remarkably reduced, and the resource utilization efficiency is improved. Through the design of the multi-stage sedimentation tank and the sectional sedimentation technology, the sedimentation efficiency is improved, the sedimentation space is fully utilized, the sedimentation time is shortened, and an excellent sedimentation effect is achieved. Due to the design of the multi-stage sedimentation tank, the flexibility and adaptability of the sedimentation process are enhanced, the device is suitable for different slime water characteristics, and the overall sedimentation efficiency is improved.