111results about How to "Simple processing method" patented technology

The invention discloses a method for preparing a PLA-PCL polyester copolymer for a biomass pressure-sensitive adhesive under a non-catalytic condition, which comprises the following steps: S1, putting L-LA and epsilon-CL into a reaction container, adding ethylene glycol or glycerol into the reaction container, and subsequently carrying out argon protection treatment; s2, heating the reaction container containing the sample at 180-240 DEG C for 3 hours; and S3, after the reaction, forming a uniform system, namely obtaining the PLA-PCL polyester copolymer for the biomass pressure-sensitive adhesive. According to the preparation method, L-LA and epsilon-CL are taken as raw materials, an alcohol compound is taken as an initiator, and the PLA-PCL polyester copolymer for the biomass pressure-sensitive adhesive is directly prepared through reaction at high temperature. The method has the beneficial effects that no catalyst is needed in the reaction process, the process method is simple and convenient, and the preparation process is short in time consumption; the prepared product can be used for preparing a biomass pressure-sensitive adhesive.

The invention discloses a process method for preparing a fluopyram key intermediate. The key intermediate is [3-chloro-5-(trifluoromethyl) pyridine-2-yl] ({[2-(trifluoromethyl) benzoyl] amino} methyl) dimethyl malonate, and the process method comprises the following steps: in the presence of a solvent 1, carrying out a reaction on a compound 2-[3-chloro-5-(trifluoromethyl) pyridyl] dimethyl malonate potassium salt and a compound 1-D in a reaction container, and distilling and recovering the solvent 1 to obtain the intermediate compound. Wherein the solvent 1 is selected from acetic ester solvents with the boiling point range of 40-110 DEG C at normal temperature and normal pressure. The process method is simple and convenient, the total yield is high, the solvent is easy to recover, and the product purity is high; the intermediate does not need purification post-treatment, can be directly used for synthesis of fluopyram, can be amplified, and is beneficial to cost reduction, efficiency improvement and commercial mass production.

The invention discloses a low-odor soft TPE (thermoplastic elastomer) composite material and a preparation method thereof, and the composite material comprises the following components in parts by weight: 50-100 parts of TPE, 5-20 parts of a deodorant, 150-600 parts of a plasticizer, 1-10 parts of an antioxidant, 1-5 parts of a light stabilizer, 0-20 parts of calcium stearate, 2-10 parts of nano silicon dioxide, 1-5 parts of an organic silicon modifier and 50-150 parts of a bio-based plasticizer. 1-5 parts of nano titanium dioxide, 0.1-1 part of graphene nanosheets and 1-5 parts of a metal organic framework compound; 0.01-0.5 part of carbon nanotubes, 0.5-2 parts of a self-repairing polymer containing microcapsules, and 1-10 parts of an antibacterial agent. By adding the novel deodorant, peculiar smell molecules generated in the hot melting process are effectively captured, adsorbed and degraded, the smell of the product is remarkably reduced, and more comfortable user experience is provided.

The invention discloses a process method for preparing fluopyram. The process method comprises the following steps: in the presence of a solvent 1, reacting a compound 2-[3-chloro-5-(trifluoromethyl) pyridyl] dimethyl malonate potassium salt with a compound 1-D in a reaction container to obtain an intermediate compound, and distilling to recover the solvent 1 without purification treatment of the intermediate compound; adding water, alkali and a solvent 2 into the reaction container for reaction; adjusting the pH value after the reaction, and continuing the reaction; and after the reaction is finished, carrying out post-treatment to obtain the product fluopyram. Wherein the solvent 1 is selected from acetic ester solvents with the boiling point range of 40-110 DEG C at normal temperature and normal pressure. The process method is simple, convenient, high in total yield, low in cost and stable and qualified in product quality, fluopyram is prepared through a one-pot method, production equipment is reduced, investment is reduced, cost is reduced, efficiency is improved, and commercialized mass production is facilitated.

The invention discloses an electric arc additive manufacturing method for assisting in titanium alloy grain refinement through coaxial ultrasound. The method comprises the following steps that firstly, an ultrasonic gun is installed on a welding gun in the mode that the ultrasonic gun and a tungsten electrode are coaxial; 2, fully cleaning the surface of the titanium alloy substrate, clamping and fixing the titanium alloy substrate in a to-be-welded area, and adjusting the tip position of a tungsten electrode to the initial position of material increase; thirdly, welding shielding gas is introduced in advance, and after the electric arc is stable, layer-by-layer stacked additive manufacturing is carried out on the titanium alloy substrate through a coaxial ultrasonic auxiliary method; and fourthly, the titanium alloy component obtained after additive manufacturing is completed is cooled and then taken down from the clamp, and the additive manufacturing process is completed. According to the method, the ultrasonic waves are introduced into the electric arc and the molten pool, the electric arc form can be effectively controlled, the fluidity of the molten pool can be effectively improved, then grain size refinement and distribution uniformity of the titanium alloy additive manufacturing component are achieved, the titanium alloy additive manufacturing component is strengthened, the mechanical property of the titanium alloy additive manufacturing component is improved, and the method has very important significance on titanium alloy electric arc additive manufacturing.

The invention discloses an axial flow casing coating hole and runner machining device and method, and belongs to the technical field of aero-engine manufacturing, the axial flow casing coating hole and runner machining device comprises a small drill bit, a large drill bit and a first supporting piece, a middle through hole is formed in the first supporting piece, and the middle through hole is located above a piston piece and is an oil storage cavity; the limiting piece is used for abutting against and pressing an inner hole of the axial flow casing so as to support the axial flow casing, and a pressure adjusting cavity is formed in the limiting piece; the pushing assembly is used for pushing the piston piece to ascend and descend and pushing hydraulic oil in the oil storage cavity into the pressure adjusting cavity when the piston piece ascends, and then the pressure of the pressure adjusting cavity is increased to push the limiting piece to expand and press an inner hole of the axial flow case. On the contrary, when the piston piece descends, pressing and supporting of the limiting piece on the inner hole of the axial flow casing are released. In addition, the coating holes machined through the optimized machining method are good in smoothness, the coating is free of cracking and upheaval phenomena, meanwhile, the machined runner is small in deformation, and the process stability is greatly improved.

The invention relates to the technical field of functional new materials, in particular to a wireless electromagnetic wave high-transmission infrared low-emissivity material and a preparation method thereof. The infrared low-emissivity material with high wireless electromagnetic wave transmission has a reflection effect in 2-20 [mu] m wave band infrared rays, and has a direct transmission effect in a 100 kHz-1.6 THz communication electromagnetic wave band; the infrared low-emissivity material with high wireless electromagnetic wave transmission comprises a scatterer. The material has the advantages that the problems that an existing low-emissivity material has an electromagnetic shielding effect, application is limited and the like are solved, the preparation method is simple, and the material can be applied to radiation heat preservation and heat insulation in the fields of new energy automobiles, low-carbon energy-saving buildings, cold-chain logistics, low-carbon agriculture, smart cities and the like and infrared thermal camouflage compatible with a multiband stealth technology; good application prospects are realized.

The invention provides a preparation method of a through-type silver-copper composite material used as a melt, and the preparation method comprises the following steps: carrying out multi-pass slotting treatment on the surface of a coiled copper strip along the length direction, and forming a plurality of grooves penetrating through the width direction of the copper strip on the surface of the copper strip; special-shaped machining is conducted on the two side faces of the groove; silver strips are positioned in the multiple grooves correspondingly, and continuous cold compounding is conducted through a special-shaped roller set; carrying out heat treatment on the material obtained by cold compounding; performing multi-pass cold rolling-annealing on the material subjected to heat treatment to obtain a composite material strip; and the composite material strip is brushed, so that the silver layer with the preset width is exposed from the bottom of the groove, and the through type silver-copper composite material used as the melt is formed. The composite interface bonding strength of the silver-copper composite material can be enhanced, and the production efficiency of the silver-copper composite material and the quality stability of the fuse melt are improved.

The invention relates to the technical field of traditional Chinese medicinal material processing, in particular to a rhizoma polygonati medicinal material and a processing method thereof.The processing method comprises the steps that the rhizoma polygonati medicinal material is subjected to root hair removal, cleaned, placed in a steamer to be steamed for 2 h in a water isolation mode, taken out, sliced and dried for 6-9 h at the temperature of 50-70 DEG C, rhizoma polygonati raw decoction pieces are obtained, vine tea extraction juice is added into the rhizoma polygonati decoction pieces according to a certain solid-to-liquid ratio, covered moistening is conducted for 8-10 h, and the rhizoma polygonati raw decoction pieces are obtained. After the ampelopsis grossedentata extracting juice is absorbed, putting the ampelopsis grossedentata extracting juice into a steamer to be steamed for 2-5 hours in a water isolation manner, taking out the ampelopsis grossedentata extracting And steaming for 3-6 times according to the steps to obtain the prepared rhizoma polygonati decoction pieces. The processing method is simple, feasible and easy to operate. By adopting the optimized process, the oxidation resistance of the prepared rhizoma polygonati decoction pieces is improved by 39.68%, the content of 5-hydroxymethylfurfural is reduced by 64.48%, the internal quality of rhizoma polygonati processed products is improved, and a new thought is provided for the rhizoma polygonati processing process.

An anti-arching and mirror surface protection method for mirror surface stainless steel welding comprises the following steps that (1) a mirror surface stainless steel plate is fixed, the mirror surface stainless steel plate is placed on a carbon steel plate, and a mirror surface protection film and a pressing block are sequentially placed on the mirror surface stainless steel plate; the thickness of the mirror surface stainless steel plate is 5-8 mm, and the thickness of the carbon steel plate The carbon steel plate needs to be preheated before welding, and the preheating temperature is 60-100 DEG C; (2) the mirror surface stainless steel plate is welded, and flux-cored wire gas shielded welding is adopted in the welding method; the diameter phi of a welding wire ranges from 1.2 mm to 1.4 mm, the welding current ranges from 180 A to 210 A, the welding voltage ranges from 23 V to 27 V, the welding speed ranges from 200 mm / min to 240 mm / min, and the flow of shielding gas CO2 ranges from 15 ml / min to 20 ml / min; (3) symmetric welding is adopted in the welding sequence; during welding, welding is conducted from the center of a welding seam to the two sides, and welding stopping is conducted at the position 10-50 mm away from the end of the mirror surface stainless steel plate And (3) polishing after welding: polishing the welding burning loss part of the mirror surface stainless steel until the mirror surface state is polished.

The invention discloses a method for measuring the content of aluminum in a composite propellant, which comprises the following steps: digesting a sample by using nitric acid and hydrogen peroxide through microwaves, and then fixing the volume and diluting to prepare a sample solution; aluminum element standard solutions with a series of concentrations are prepared, the spectral intensity of the standard solutions is measured through inductively coupled plasma emission spectroscopy, and a standard curve is drawn; and measuring the sample solution under the same condition, calculating the aluminum element concentration through the standard curve, and further calculating the aluminum content in the sample. The method is simple to operate, low in reagent consumption, high in detection efficiency and good in repeatability, has no special requirements on the types of the components of the composite propellant, has universality and can be used for determining the aluminum content in the composite propellant.

The invention discloses a silicon-carbon negative electrode material with a yolk-eggshell structure and a preparation method of the silicon-carbon negative electrode material, and belongs to the technical field of new energy materials and energy electrochemistry. The preparation method comprises the following steps: by taking photovoltaic silicon waste as a silicon source, heating in an air atmosphere to generate a silicon oxide layer on the surface of a silicon particle, then coating a layer of carbon shell outside, and finally removing a silicon oxide middle layer by hydrofluoric acid to obtain the silicon-carbon negative electrode material Si (at) Void (at) C. The obtained material is of a yolk-eggshell structure, micron-sized silicon particles are adopted as an inner core, and the silicon-carbon negative electrode material Si (at) Void (at) C is obtained. The shell is amorphous carbon, and a reasonably designed void space is formed between the particles and the shell, so that a buffer space can be provided for expansion of the silicon particles, and the cycle performance of the silicon-carbon negative electrode material is improved; the whole preparation process is simple, the price of the photovoltaic silicon waste is low, large-scale production is facilitated, high-value conversion and utilization of waste resources are achieved while the cost is reduced, and obvious economic value and social value are achieved.

The invention belongs to the field of preparation of high-purity quartz, and relates to a method for directionally removing impurity elements of pegmatite type high-purity quartz, which comprises the following steps: (1) crushing raw materials by a crusher, washing ore, grinding and grading, reselecting and floating to obtain quartz concentrate; (2) adding the quartz sand into the leachate A for constant-temperature micro-pressure leaching, and washing to obtain primary quartz sand; the leachate A is mixed acid of HF, HCl and HNO3, the concentration ratio of the HCl to the HNO3 is (3-12): 1, the concentration ratio of the HCl + HNO3 to the HF is smaller than or equal to 3, and the sum of the concentrations of the HCl, the HCl and the HNO3 is larger than or equal to 3 mol / L; (3) roasting and water quenching to obtain intermediate quartz sand; (4) adding the quartz sand into the leachate B for ultrasonic leaching, washing, and carrying out high-temperature heat treatment to obtain high-purity quartz sand; the leachate B is a mixed acid of HF and HCl, HF is 0.5-2 mol / L, and the concentration ratio of HCl to HF is less than or equal to 3. According to the method, the 4N8-grade high-purity quartz sand can be obtained, the yield is high, the process is simple, and operation is easy.

The invention discloses a double-alloy sintered neodymium-iron-boron permanent magnet and a preparation method and application thereof, and relates to the technical field of rare earth permanent magnet materials. Comprising the following steps that a main alloy and an auxiliary alloy are evenly mixed and then subjected to orientation profiling, cold isostatic pressing, liquid phase sintering and tempering heat treatment in sequence, the double-alloy neodymium iron boron permanent magnet is prepared, the chemical composition of the auxiliary alloy is AlxRE2yM100-x-y, RE2 is selected from one or more combinations of Ce, Dy, Gd, Ho, La, Nd, Pr, Tb and Y, and M is selected from any one or more combinations of Co, Cu, Ga, Ti, Zr and Nb; x and y satisfy 5 < = x < = 50 and 20 < = y < = 80; according to the method, on the premise that the magnetic performance of the neodymium iron boron permanent magnet is synchronously optimized, the mechanical performance of the neodymium iron boron permanent magnet is further improved, the mechanical performance and the magnetic performance of the sintered magnet have good consistency and stability, the technological method is simple and easy to implement, and the method is suitable for industrial production.

The application relates to a method for preparing a deformable reinforcing metal matrix composite material by a pressure infiltration technology, and relates to a method for preparing a metal matrix composite material. In order to solve the problems of poor plasticity of the metal matrix composite material and difficulty in preparing a deformable reinforcing aluminum matrix composite material by a self-exhaustion pressure infiltration technology, the application mixes reinforcing body powder with polysilazane, and then sintering, the polysilazane is cracked at high temperature and a ceramic skeleton is generated, the structural strength of the preform in a high-temperature state is improved, and the success rate of the self-exhaustion pressure infiltration process for preparing the deformable reinforcing metal matrix composite material is effectively improved. The application realizes the function of preparing a heterogeneous aluminum alloy by the pressure infiltration technology, and has better strength-plasticity matching compared with a homogeneous alloy with the same composition.

A method for preparing a high-temperature ablation-resistant chopped carbon fiber reinforced SiBCN‑MAS composite material, which relates to a method for preparing a SiBCN ceramic-based composite material. The present invention aims to solve the problem that the existing carbon fiber or cracked carbon coated carbon fiber reinforced SiBCN ceramic-based composite materials have poor contact surface bonding and limited improvement in high-temperature ablation resistance. Method: 1. Prepare cracked carbon coated chopped carbon fibers; 2. Prepare SiBCN amorphous ceramic powder; 3. Mix raw materials; 4. Sinter. The present invention is used for the preparation of high-temperature ablation-resistant chopped carbon fiber reinforced SiBCN‑MAS composite materials.

The invention relates to the technical field of optical cement, and discloses a method for improving the bending resistance of optical OCA (Optical Clear Adhesive), which comprises the following steps: adhering the optical cement to a functional layer of an optical element, and standing for 1-30 days in an environment of 35-100 DEG C; the optical cement is a block copolymer, the structural general formula of the block copolymer is M < 1-b >-M < 2-b >-M < 3 >...-b-M < j >, and the value range of j is 3-11; wherein M1, M2, M3... Mj are comonomers in the block copolymer, and the number-average molecular weight of the block copolymer is 800000-800000 g / mol; the comonomer comprises a soft monomer, a hard monomer or a functional monomer; and the mass contents of the soft monomer, the hard monomer and the functional monomer in the block copolymer are respectively 70-98%, 2-30% and 0-5%. According to the method, the bonded optical element is subjected to heating and standing treatment, so that the bonding strength of the optical cement and the functional layer of the optical element can be effectively improved, the surface of the treated optical element still has no obvious crease after being repeatedly folded for 0.5-300,000 times, and the treated optical element also has no obvious yellowing phenomenon after being subjected to high-temperature treatment.

The invention discloses a method for determining the content of amylose and amylopectin in corn through a full-automatic flow injection analyzer method, and particularly relates to the field of determination of the content of amylose and amylopectin in corn, the method comprises the following steps: taking a corn kernel sample, crushing into powder, and passing through a 80-mesh screen to obtain corn kernel sample powder; the corn kernel sample powder is subjected to reflux extraction degreasing through a degreasing agent, and a degreased corn kernel sample is obtained; the method comprises the following steps: weighing a degreased corn kernel sample, putting the degreased corn kernel sample into a conical flask, adding a 95% ethanol solution, transferring a sodium hydroxide solution into the conical flask, and heating the conical flask in a boiling water bath for 10 minutes to obtain a to-be-detected corn sample with starch dispersed; taking out the to-be-detected corn sample, cooling to room temperature, transferring into a volumetric flask, adding distilled water to a constant volume, shaking uniformly, analyzing by a flow injection analyzer, and calculating to obtain the content of amylose in the corn sample. The method has the advantages of high automation degree, high detection speed and simple sample treatment.

The invention relates to the technical field of preparation of biological fertilizers for rotten vegetable leaves, in particular to a biological fertilizer for rotten vegetable leaves, which is prepared from the following raw materials in parts by weight: 25-35% of rotten vegetable leaves, 40-50% of sheep manure, 8-12% of straw, 12-18% of humic acid compost and 0.4-0.6% of microbial agent added into 12-18% of humic acid compost. The preparation method of the rotten vegetable biological fertilizer comprises the following steps: step 1, diluting a microbial agent by 100 times with water, and culturing for 8-12 hours; step 2, uniformly mixing various raw materials, adjusting the moisture proportion, uniformly spraying the cultured bacterial liquid into organic materials while stirring, adjusting the humidity to be about 45-60%, kneading the organic materials into balls without dripping water and loosening the organic materials after loosening, and starting composting; and step 3, spraying the culture bacteria solution for the second time during the first turning, and then turning for 1-2 times according to the situation so as to achieve the effects of ventilation and oxygen supply and improve the compost quality. The method for treating the rotten vegetable biological fertilizer is simple and easy to implement and can be easily accepted by the masses.

The utility model discloses a durable spiral net with stable air permeability, which comprises a left-hand spiral ring (1) and a right-hand spiral ring (2) which are wound by monofilaments, and the left-hand spiral ring (1) and the right-hand spiral ring (2) are sequentially and circularly crossed together to form a crossed hole (3) which is penetrated by string ring monofilaments (4) to form the spiral net. A corresponding cross-linking core wire (5) is inserted into the left-hand spiral ring (1) in the same column and / or a corresponding cross-linking core wire (5) is inserted into the right-hand spiral ring (2) in the same column, the cross-linking core wire (5) comprises a plurality of cross-linking monofilaments (51) which are arranged in parallel, and the cross-linking monofilaments (51) are fixedly connected through cross-linking points (52) to form the cross-linking core wire (5). According to the durable spiral net with the stable air permeability, the stability of the air permeability of the net surface can be guaranteed in the solid-liquid separation machining process, the solid-liquid separation efficiency is improved, meanwhile, the strength of the net surface is enhanced, the spiral net is durable, and the service life is prolonged.

A kind of secondary machine tool centering method of fir type wheel groove of steam turbine rotor, it is related to a kind of rotor centering method, to solve the problem that steam turbine rotor fir type wheel groove secondary machine tool machining cannot be centered.The present application installs shaft on machine tool spindle, moves shaft into wheel groove from wheel groove end face, makes the depth reference position line of shaft coincide with the depth size reference line position of wheel groove;When clearance value L1 is greater than L2, rotate rotor impeller counterclockwise;Conversely, rotate rotor impeller clockwise;If clearance value L1 is greater than L3, machine tool spindle is adjusted upwards along Y axis;Conversely, machine tool spindle is adjusted downwards along Y axis;When clearance value L1, clearance value L2, clearance value L3 and clearance value L4 are equal to theoretical value M;Shaft is taken off from machine tool spindle, wheel groove milling cutter for product machining is installed, product machining is carried out, and centering is completed.The beneficial effect is to realize the centering of rotor wheel groove secondary machine tool.

The invention discloses a method for preparing isooctanoic acid by selective oxidation of isooctyl alcohol, and belongs to the technical field of preparation of isooctyl acid of fine chemicals. The invention uses sodium lignin sulfonate quaternary ammonium salt loaded with phosphotungstic acid as a catalyst, isooctyl alcohol as a raw material, and H2O2 as an oxidant, and synthesizes isooctyl acid by solvent-free one-step reaction. The method for preparing isooctyl acid by selective oxidation reaction of isooctyl alcohol provided by the invention has the advantages of being direct, efficient, and green. Compared with the prior art, the sodium lignin sulfonate quaternary ammonium salt catalyst loaded with phosphotungstic acid prepared and used by the invention and the product isooctyl acid can be separated by a simple solid-liquid separation means, which not only overcomes the defects of needing to use a large amount of strong oxidants (potassium permanganate, nitric acid, etc.) and noble metal catalysts in the process of synthesizing isooctyl acid, and polluting the environment, but also can achieve a high conversion rate of isooctyl alcohol and a high yield of isooctyl acid.

This invention provides an electrochemical membrane reactor and its application in acidic wastewater treatment, belonging to the field of wastewater treatment, and particularly relating to the treatment of acidic wastewater. The device mainly includes membrane electrodes (including anodes and cathodes, with the number of cathodes and anodes being the same), an electrolytic cell, an acidic wastewater neutralization tank, a product water tank, and a DC power supply. The membrane reactor applies an electric field to the cathode and anode membrane electrodes via the power supply, generating hydroxide ions on the cathode surface to neutralize the acidic wastewater in the neutralization tank. Excess hydroxide ions can combine with heavy metal ions to form hydroxide precipitates. Simultaneously, a water pump extracts the clarified liquid containing organic pollutants after the reaction, and the organic pollutants in the water are degraded through electrochemical oxidation at the anode. This reactor can achieve the neutralization of acidic wastewater and the removal of heavy metal ions without the addition of external chemical reagents, while simultaneously electrochemically oxidizing and degrading organic pollutants in the water.

The invention discloses a machining device and method for a casting pipeline sand core exhaust channel, and belongs to the technical field of casting machining.The machining device comprises a copper pipe, a file, a punching platform, a conical needle, a core box mold and a hole filing mechanism, the punching platform is used for limiting and supporting the copper pipe, and the hole filing mechanism is used for clamping the file and driving the file to file a sinking groove in the copper pipe; the conical needle is used for continuously drilling an exhaust hole in a sinking groove of the copper pipe, the copper pipe is used for being laid in a core box mold, the core box mold is used for casting and forming pipeline core sand and comprises a sand shooting nozzle and a core head, the sand shooting nozzle is used for filling precoated sand into the core box mold, and the precoated sand covers the copper pipe; the end face of the copper pipe is exposed out of the core head so that the pipeline sand core can be exhausted in the baking and pouring process. A copper pipe, a file, a conical needle, a core box mold and other simple and practical tools can be utilized, a pipeline exhaust channel is formed through a reasonable method, precoated sand pipeline sand core exhaust is achieved, and therefore the influence of gas on a casting is reduced.

The application provides a method for preparing an elliptical micro convex lens array on a hard and brittle material based on a femtosecond laser and a dry etching method and a device thereof, and comprises the following steps: processing a through hole on a substrate surface, processing a micro-nano composite structure on the substrate surface for forming a super-hydrophilic surface; coating PDMS glue on the surface of the hard and brittle material, placing the hard and brittle material coated with the PDMS glue at the bottom of a container with liquid; contacting the super-hydrophilic surface with the surface of the hard and brittle material coated with the PDMS glue, and applying a downward pressure; through the action of surface tension and the downward pressure, the PDMS glue in the rectangular through hole of the substrate forms an elliptical micro convex lens structure; the PDMS is stripped through evaporation to obtain a hard and brittle material with residual PDMS; and the hard and brittle material with residual PDMS is subjected to plasma dry etching to obtain an elliptical micro convex lens array structure on the hard and brittle material. The application can efficiently and flexibly form a high-quality elliptical micro convex lens array on a hard and brittle material.

The invention relates to a machining method and device for a flow guide pipe of a complex curved-surface thin-wall part, and belongs to the field of aero-engines. Comprising the following steps that S1, a drawing die, a forming die and a flanging die are designed and manufactured according to curved surface coordinates of the flow guide pipe; s2, simulating the forming machining process of the flow guide pipe, and determining the expansion amount of a blank plate; s3, the blank plate is bent through the drawing die, and the front edge of the flow guide pipe is formed on the blank plate; s4, the blank plate is subjected to punch forming through a forming die, and the flow guide pipe basin direction, the flow guide pipe back direction and the flow guide pipe tail edge are formed on the blank plate; s5, flanging is conducted on the blank plate through a flanging die, and a flow guide pipe flanging is formed on the blank plate; s6, the tail edges of the two flow guide pipes are welded; s7, a plurality of flow guide pipe micropores are machined in the front edge of the flow guide pipe; and S8, the machining effect of the flow guide pipe is verified through a cavity simulation piece. According to the method, the forming manufacturing and assembling difficulty of the aero-engine turbine blade complex inner cavity flow guide pipe can be reduced.

The invention provides a machining tool and method for a butt joint shaft of a ceramic matrix composite airfoil product component. The machining tool and method are used for solving the technical problem that the precision of the butt joint shaft of an existing airfoil product component cannot meet the design requirement. The machining tool comprises a base, a supporting unit and a tensioning assembly. The base is of a rectangular plate-shaped structure, the supporting unit comprises two supporting assemblies which are symmetrically arranged in the length direction of the base, and a gap exists between the two supporting assemblies; each supporting assembly comprises a plurality of supporting seats, each supporting seat is vertically installed on the base, and the upper end faces of all the supporting seats jointly form a curved surface which is the same as the upper end face of a to-be-machined airfoil product component skeleton structure; the tensioning assembly comprises a plurality of braces; the two ends of each brace are connected with the tops of the two corresponding supporting bases in the two supporting assemblies correspondingly and used for fixing the two corresponding supporting bases correspondingly. The airfoil product component obtained based on the machining tool is high in butt joint shaft precision.

The application discloses a kind of photovoltaic glass self-cleaning nano coating and its processing method, for crosslinking grafting on the surface of photovoltaic glass to control water contact angle less than 0.3 °, it is related to photovoltaic maintenance technical field, the photovoltaic glass self-cleaning nano coating includes mesoporous silica, epoxy group polyether, dimethyl diallyl ammonium chloride, enamine, ethyl chloroacetate, crosslinking agent, initiator, silane coupling agent.The application has the photovoltaic glass self-cleaning nano coating of water contact angle less than 0.3 ° formed on the surface of photovoltaic glass, so that water film spread on the surface of photovoltaic glass is separated from the photovoltaic glass self-cleaning nano coating by contaminant, and then the effect of removing contaminant is carried out by using gravity and / or wind power to drive water film to move.

The invention relates to a method for identifying a safety factor q = 1 area of a plasma core based on a multi-channel polar correlation reflectometer. The safety factor q = 1 area is directly identified by monitoring density fluctuation information of the plasma core area through the multi-channel polar correlation reflectometer. When the multi-channel polar correlation reflectometer emits detection microwaves with multiple frequencies to the plasma core part, the influence area of the fishbone model can be identified by monitoring whether the frequency spectrum of the reflection signals of the detection microwaves generates Doppler frequency shift fD, and the area is the area of the plasma core part q = 1. Compared with a traditional safety factor distribution measurement method, the novel method can directly identify the area of the plasma core q = 1, and is simpler, more efficient and more accurate.

The invention discloses SPR (Surface Plasmon Resonance) self-punching riveting equipment for an integrally die-cast vehicle body and a machining method. The advancing and retreating plate is connected to the machining table through a driving mechanism; the at least one clamping mechanism is arranged on the top surface of the advancing and retreating plate; the at least one self-punching-riveting mechanism is detachably connected to the machining table; a vehicle body is fixed through the clamping mechanism and conveyed to the self-punching-riveting mechanism through the driving mechanism via the advancing and retreating plate, and the vehicle body is riveted and fixed through the self-punching-riveting mechanism. According to the SPR self-punching riveting equipment, accurate movement of a single vehicle body can be achieved, riveting machining can be conducted on multiple positions of the vehicle body at the same time, the machining efficiency and precision of the SPR self-punching riveting equipment are greatly improved, the labor intensity of manual operation is reduced, meanwhile, multiple vehicle bodies can be selected to be riveted at the same time according to the sizes of the vehicle bodies, and use is flexible and convenient.