1365results about How to "Reduce processing costs" patented technology

The invention belongs to the technical field of photovoltaic wet etching, and particularly relates to a low-concentration hydrofluoric acid composite etching solution and a preparation method and an etching process thereof, and the low-concentration hydrofluoric acid composite etching solution comprises the following components in percentage by mass: 5%-10% of hydrofluoric acid, 2%-5% of an etching additive and the balance of water; wherein the etching additive comprises the following components in percentage by mass: 8%-25% of a strong oxidant, 2%-5% of an etching accelerant, 0.5%-2% of an interface modification and mass transfer accelerant, 0.1%-3% of a product control and stabilizer, 0.1%-2% of an equipment compatible corrosion inhibitor and the balance of water; the strong oxidant is used for oxidizing silicon nitride to form a silicon oxynitride transition layer, the etching accelerant is used for providing HF molecules and HF2-ions, and the product control and stabilizing agent is used for complexing SiF62-ions generated by etching.

According to the auxiliary positioning clamp for milling the exhaust manifold, an inclined positioning supporting device is arranged on the right side of the upper end face of a bottom plate, and when the inclined positioning supporting device is connected with a flange at the lower end of a middle pipe of the exhaust manifold in a matched mode, an upper end pipe of the exhaust manifold is in a horizontal state, and a pipe opening in the elbow end of the upper end of the exhaust manifold is parallel to the corresponding side wall face of the bottom plate; the left side of the upper end face of the bottom plate is provided with a positioning and supporting assembly used for supporting the elbow end of the upper end of the exhaust manifold and determining the center position of a pipe opening, and the positioning and supporting assembly is matched with a pressing assembly arranged on the upper end face of the bottom plate to fixedly support the elbow end of the upper end of the exhaust manifold on the bottom plate. Initial positioning conditions are provided for the center of a pipe opening of the upper end pipe of the exhaust manifold, reliable supporting and fixing of the exhaust manifold on the bottom plate are achieved, the defect that a traditional clamp is high in requirement for machining equipment is overcome, machining cost is reduced, the exhaust manifold can be accurately and rapidly positioned and clamped, production cost is reduced, and the machining efficiency is improved. Equipment limitation is eliminated, and the production requirements of parts are met.

The application discloses a double-hearth two-stage heating vacuum distillation furnace, which comprises an evaporation furnace and a condensation furnace which are communicated through a gas passage, wherein the evaporation furnace comprises an evaporation furnace body and at least one top heating mechanism which is detachably arranged on the top of the evaporation furnace body; and the condensation furnace comprises a condensation furnace body, a side heating structure and a furnace cover, wherein the condensation furnace body is divided into a temperature control condensation chamber and a plurality of layers of multistage condensation chambers, and the gas passage can be combined or replaced according to the required reaction conditions of different materials. The vacuum distillation furnace can collect different metals through the gradient change of the temperature of the two hearths, reduces the process of secondary distillation of volatile matters after the furnace is stopped, can complete the processing of diversified raw materials, improves the work efficiency and reduces the processing cost; the modular top heating mode directly radiates heat to the materials, improves the heat utilization rate, can realize the working mode of stopping the furnace without stopping the work, helps to improve the work efficiency, and is convenient for completing the furnace cleaning, maintenance and solid material taking and placing.

The invention relates to the field of numerical control machining and computer-aided manufacturing software, and particularly discloses a honeycomb core six-axis ultrasonic cutting track digital control and interpolation optimization system which comprises a track preprocessing module, a parameterized spline interpolation module, a six-axis linkage inverse solution module, a dynamic feed-forward compensation module, an ultrasonic energy adaptive control module and a multi-source information fusion and decision module. By the adoption of the technical scheme, smooth and efficient interpolation of a track, dynamic feed-forward compensation of motion errors and self-adaptive adjustment of cutting energy can be achieved, and therefore the machining precision, the surface quality and the system stability are improved. According to the invention, ultrasonic energy control is originally incorporated into an overall trajectory control closed loop, and real-time accurate regulation and control of cutting energy are realized through the ultrasonic energy adaptive control module. The module is based on force, amplitude, temperature and other multi-sensor information, adopts fuzzy reasoning to intelligently decide output power, and ensures that cutting energy is constant and optimal under different processing conditions.

The utility model discloses a kind of stacked spiral concentration dehydration integrated machines, it is related to stacked spiral dehydration equipment technical field, including base, the base is obliquely installed in equipment site, and the base upper portion is provided with cylinder, the cylinder right side is provided with concentration part, and the cylinder left side is provided with dehydration part, and concentration part and dehydration part internal space are communicated, the fixed mounting plate of cylinder left side, and the servo motor is installed in mounting plate left side, and servo motor is connected with output end by speed reducer, the output end right side is connected and installed with screw rod, and screw rod is penetrated in cylinder interior, the cylinder left side outside is provided with back pressure plate, and back pressure plate rear side is provided with mud scraping rod, the base interior is water tank structure, and the base interior is provided with filter plate. The stacked spiral concentration dehydration integrated machine solves the problem of traditional equipment mud cake blockage, cleaning is complicated, dehydration efficiency is improved, continuous operation time is extended, and is suitable for municipal, industrial sludge dewatering treatment.

The application belongs to the technical field of polymer material recycling, and particularly relates to a high-efficiency enzymatic hydrolysis process of polycaprolactam. The high-efficiency enzymatic hydrolysis process of polycaprolactam provided by the application comprises the steps of acid pretreatment, enzymatic catalytic depolymerization and product post-treatment. The process combines sulfuric acid and a multi-enzyme system to treat PA6 with high substrate concentration. The physical form and chemical accessibility of PA6 are significantly changed through sulfuric acid pretreatment, which creates conditions for subsequent enzymatic hydrolysis reaction, and realizes efficient, deep and green degradation of PA6.

The present application relates to multispectral imaging control technical field, especially to a kind of multispectral imaging control method of large field of view multi-piece detector splicing, and each piece of detector is assigned unique address, and the spectral segment of each piece of detector is defined, and imaging controller is according to the address where detector is located is odd or even, the exposure trigger signal of each spectral segment, spectral segment selection address, imaging parameter and the selection control of image data channel are carried out.The present application does not need the intervention of external instruction etc.;It is divided into two groups of odd and even, and it is not easy to appear error relatively.;And on the hardware design, a single circuit board can meet the application requirements of project, can reduce the type of circuit board, reduce processing cost, improve the interchangeability between products at the same time, facilitate cross checking problem.

The utility model belongs to the field of compressor auxiliary dismounting tools, and discloses a compressor air valve dismounting auxiliary clamping device which comprises a base and a supporting seat, a sliding groove is formed in the base, two sliding blocks matched with the sliding groove in a sliding mode are arranged in the sliding groove, the sliding blocks are both provided with lapping plates, the inner ends of the sliding blocks are provided with pins which are arranged in a detachable mode, and the supporting seat is arranged on the base. The outer end of the supporting seat is provided with an adjusting screw rod which is vertically arranged in a detachable mode, the supporting seat is provided with a supporting screw rod matched with the butt strap, and the two ends of the butt strap can be relatively fixed to the adjusting screw rod and the supporting screw rod respectively. The air valve can be limited in multiple directions through cooperation of the pins and the butt strap only through small clamping force, stress damage to the air valve is avoided, meanwhile, the disassembly and assembly stability of the air valve is guaranteed, flexible adjustment can be conducted according to needs, the disassembly and assembly requirements of air valves of multiple models are met, the overall machining cost is low, and good adaptability and reliability are achieved.

This invention discloses a highly efficient asymmetric synthesis method for aryl propionic acid drug molecules. The method uses racemic aldehydes as substrates and thiamine pyrophosphate-dependent enzymes as biocatalysts. Electrolysis is performed in a diaphragm-free electrolytic cell under conditions of an external redox dielectric and constant current, in a buffer salt solution and nitrogen atmosphere. This method achieves dynamic kinetic oxidation of aldehydes via bioelectrocatalysis, enabling the high-efficiency and high enantioselectivity synthesis of aryl propionic acid drug molecules. The method eliminates the need for redox agents and additives, is simple to operate, operates under mild reaction conditions, and is green and sustainable. This invention applies bioelectrocatalysis to asymmetric synthesis, providing a green and efficient new enzymatic synthetic route for the asymmetric synthesis of aryl propionic acid drug molecules, which has significant application prospects in the pharmaceutical industry.

The application discloses a kind of salt-tolerant heterotrophic nitrification-aerobic denitrification composite microbial inoculant, which is compounded by seed liquid of halomonas sp LJK13, halomonas campaniensis LJK10 and halomonas alkaliphila LJK2, and the volume ratio of the seed liquid of halomonas sp LJK13, halomonas campaniensis LJK10 and halomonas alkaliphila LJK2 is 2-3:1-2:1-2.The composite microbial inoculant adapts to a wide range of environmental conditions, and when C / N is 20-200, salinity is 1%-30%, initial NH4 + -N and NO3 ‑ -N concentration is 50mg / L-1000mg / L, the denitrification removal rate of heterotrophic nitrification-aerobic denitrification composite bacteria is 28.0%-100%, which shows that the salt-tolerant heterotrophic nitrification-aerobic denitrification composite microbial inoculant has good comprehensive denitrification performance for seawater aquaculture wastewater, and has a wide range of environmental applications.

The application discloses a high-salt organic wastewater biological treatment method, characterized in that the method comprises the following steps: step one, screening of halophilic bacteria, the required halophilic bacteria are directly screened from the soil of saline-alkali land, and then the mixed culture of the screened bacteria is subjected to rescreening; the method has the beneficial effects that the halophilic bacteria ZC2403-SYL, ZC2404-SYT and salt-tolerant bacteria ZC2402-MT which can still degrade pollutants are screened out in a high-salt environment by using a microbial method, the organic matters triethylamine, n-butylamine and formamide can be degraded in the high-salt environment, the degradation rates of the organic matters can all reach more than 90% within 72 hours, an efficient salt-tolerant biological treatment system and an efficient bacteria (halophilic bacteria) system are constructed for high-salt and refractory organic pollutants, the three kinds of bacteria screened are mixed and cultured to rapidly form an efficient high-salt organic wastewater degrading bacterial agent ZC-SY, the bacterial agent can be used in actual high-salt organic wastewater and can achieve stable operation, and the treatment problem of the actual organic high-salt wastewater can be effectively solved, and the water treatment cost is reduced.

The application discloses a groove cutter for machining a turbocharger shell annular groove and a turbocharger shell, the groove cutter comprising a first cutter body, a second cutter body and a cutting edge. The stable clamping of the first cutter body lays a foundation for machining precision, avoiding machining errors caused by clamping deviation; the design of the chip removal angle A and the support angle B of the second cutter body not only solves the problem of chip removal, but also enhances the strength of the groove cutter, reduces cutting heat and groove cutter deformation; the cutting edge comprises a straight edge section and a semicircular edge, which controls the cutting contact area, reduces the cutting force and vibration, and protects the edge. The joint action of these designs not only makes the machining precision of the annular groove meet the assembly and use requirements of the shell, but also improves the service life of the groove cutter, reduces the number and time of tool replacement, reduces the machining cost, improves the overall machining efficiency, and fully meets the batch production requirements of the new energy automobile turbocharger shell.

The utility model relates to filter cloth cleaning technical field, specifically disclose a filter cloth cleaning device of sludge water separation treatment, including base, ultrasonic cleaning tank and water pipe, the ultrasonic cleaning tank fixed mounting is above base, water pipe fixed connection is in the ultrasonic cleaning tank top side, the ultrasonic cleaning tank bottom fixedly connected with standpipe, the standpipe is separately provided with switch valve and blowdown pump, the standpipe is fixedly installed with filter screen, the standpipe bottom fixedly connected with drain pipe, the standpipe bottom end fixedly installed with motor, the filter screen middle part rotationally arranged with vertical rod, motor output shaft end portion and vertical rod bottom end fixed installation, the vertical rod side fixedly installed with movable plate, the movable plate bottom edge is provided with brush, this filter cloth cleaning device can separate sludge directly when filter cloth cleaning completes blowdown, discharges sludge after separation, effectively reduces subsequent sludge water treatment cost, and the practicality is strong.

The application provides an arginine deiminase mutant with alkali resistance, and the amino acid sequence of the mutant is SEQ ID NO:3. When L-arginine is used as a substrate to synthesize L-citrulline, the pH value of a reaction system can be as high as pH 11 or higher, and hydrochloric acid neutralization is not needed, so that the cost of product separation and purification and waste water treatment is significantly reduced.

The application discloses a broken image fusion method and processing system, and a storage medium, and comprises the following steps: acquiring a first remote sensing image, and generating a vegetation pixel classification grid result; acquiring a second remote sensing image, and segmenting out a first and a second segmentation vector layer; analyzing the first vegetation boundary vector from the second remote sensing image, acquiring a second vegetation boundary vector, and performing spatial fusion on the first and the second vegetation boundary vector to obtain a vegetation constraint boundary; superimposing each vegetation grid into the first segmentation vector layer to form a first vegetation vector result; performing spatial cutting on the first vegetation vector result and the vegetation constraint boundary to obtain a second vegetation vector result; replacing the graph patches of the second vegetation vector result at the positions corresponding to the vegetation grids with the graph patches of the land boundary layer in the second segmentation vector layer to form a third vegetation vector result when the overlapping proportion is less than a second proportion threshold; and processing the graph patches of the land boundary layer based on the vegetation grid to form a fusion image. The application improves the image fusion collaborative efficiency.

The application provides a photoresist waste liquid recycling device and process, by adding hydrochloric acid to the photoresist waste liquid in the acidification precipitation tank in the pretreatment module to adjust the pH value, the linear phenolic resin precipitation rate reaches more than 95%, and the linear phenolic resin can be used again to the production stage of the photoresist after centrifugal separation, a compound coagulant containing sulfide and polyaluminum chloride is added to the heavy metal capture tank in the pretreatment module, and the removal rate of heavy metal ions reaches 99.5%; then the photoresist fragments are separated by using an ultrafiltration device, and the diatomite modified by NaOH and polyetherimide is used for adsorption and decolorization, then two-stage vacuum distillation process is used to realize the recovery of high-purity solvents in the photoresist waste liquid, finally, the remaining residue is polymerized and cured by ultraviolet radiation, and the solid fuel with high heat value can also be prepared, so that the 'zero emission' and resource full recovery of the photoresist waste liquid are realized, and the treatment cost and environmental risk are significantly reduced.

This invention discloses a fruit quality detection method and system based on a fruit quality detection model. First, the original hyperspectral image R of the fruit to be detected is acquired and preprocessed. Then, the preprocessed hyperspectral image R2 is input into the fruit quality detection model to obtain the surface defect results and internal quality index values ​​of the fruit. Compared with the prior art, this invention can achieve simultaneous detection of the internal and external quality of the fruit at low cost and high efficiency, and obtain the fruit quality grade result.

The application provides a method for quickly domesticating anaerobic ammonia oxidation bacteria, relates to the field of novel and efficient nitrogen removal technology, and comprises the following steps: constructing a coupled biological system, then adding simulated wastewater containing ammonium chloride and sodium nitrite into the coupled biological system, adding trace element nutrient solution after adjusting the pH to 7-8 by using anhydrous sodium carbonate, aerating the coupled system by using high-purity nitrogen gas to remove the residual air in the system, regularly sampling and monitoring the sludge and effluent in the reactor; after the sludge in the reactor appears obvious red-brown color and the ammonia nitrogen and nitrite nitrogen in the effluent are significantly removed, the domestication of the anaerobic ammonia oxidation bacteria is completed. The application utilizes anaerobic activated sludge, utilizes the principle of traditional microbial degradation of nitrogen-containing pollutants, introduces iron oxide composite material as an electron carrier to catalyze the degradation process of nitrogen-containing pollutants, improves the degradation efficiency of the traditional biological method, explores a new way to strengthen the degradation of nitrogen-containing pollutants, and reduces the cost.

This utility model provides a car roof handle and vehicle based on a four-bar linkage, belonging to the field of automotive parts technology. It includes: a base with a proximal hinge and a distal hinge, located at different positions along the depth of the base; one end of a first rocker arm hinged to the proximal hinge of the base, and the other end of the first rocker arm hinged to a connecting arm; one end of a second rocker arm hinged to the distal hinge of the base, and the other end of the second rocker arm hinged to a connecting arm; the connecting arm is hinged to the handle body. The first rocker arm, the second rocker arm, the connecting arm, and the base constitute a four-bar linkage. The advantages of this utility model are: the four-bar linkage allows for extension and retraction between the handle body and the base, enabling the handle body to be retracted and close to the base when not in use, and extended when in use, saving interior space and adapting well to bumpy driving environments.

This utility model discloses a silencer for refrigeration pipelines, including a medium inlet pipe and a medium outlet pipe, with a silencer section provided between the medium inlet pipe and the medium outlet pipe. The outer diameter of the silencer section is larger than the outer diameter of the medium outlet pipe. Therefore, when a high-speed flowing medium suddenly passes behind the silencer section, the flow rate of the medium is slowed down due to the increased space, thus absorbing or reflecting sound energy and reducing noise propagation, which can indirectly improve system reliability and energy efficiency. Simultaneously, since a plug is provided at the end of the medium outlet pipe facing the medium inlet pipe, the plug can be used to promote medium backflow and slow down the flow rate. In particular, a circular hole is provided on the outer circumference of the medium outlet pipe, allowing the flowing medium to enter the medium outlet pipe through the circular hole, ensuring smooth flow of the medium. The medium can be a liquid refrigerant, a gaseous refrigerant, or a gas-liquid mixture refrigerant.

The utility model discloses a solenoid valve driver, including socket combination - shell assembly and the circuit board - shell cover assembly that is connected with socket combination - shell assembly through shell cover screw (31), socket combination - shell assembly includes shell (1) and the socket combination (2) that is connected with shell (1), socket combination (2) includes socket (21), the plug (22) that is connected with socket (21), pin (23), socket screw (24) for fixing socket (21) on shell (1) and set up between socket (21) and shell (1) O ring (25), the circuit board - shell cover assembly includes the shell cover (3) that is connected with socket combination - shell assembly, sets up the circuit board (4) of shell cover (3) near shell one side and sets up cable (5) on the other side of shell cover (3). The utility model provides a solenoid valve driver can reach better sealing stability.

The utility model provides a counter flow cooling and cyclone separation integrated granulating device, which relates to the technical field of cooling and separating granulating devices, and comprises a workbench and a granulating machine arranged at the top of the workbench, a feed hopper is arranged at the top of the granulating machine, a discharge pipe is arranged at the bottom of the granulating machine, a granulating device is arranged in the granulating machine, and the counter flow cooling and cyclone separation integrated granulating device is arranged in the granulating machine. A stirring assembly is installed below the granulating device, an arc-shaped filter screen is installed in the granulator and located below the stirring assembly, and a conveying device is installed on one side of the granulator through a supporting frame. According to the device, through cooperative use of an arc-shaped scraper, an arc-shaped filter screen, a second connecting pipe, a conveying pipe, a first motor, a spiral conveying blade and a first connecting pipe, unqualified particles can be prevented from being mixed with qualified particles, the uniformity and consistency of final products are guaranteed, meanwhile, raw material waste is reduced, the treatment cost of the unqualified particles is reduced, and the production efficiency is improved. And the practicability of the product is further improved.

The utility model relates to workpiece processing field, specifically disclose a kind of thread rolling feeding and discharging equipment, including installation box, still include: the first workpiece mobile placement unit of being able to extend into processing position;Second workpiece mobile placement unit can extend into processing position, first workpiece mobile placement unit and second workpiece mobile placement unit can be horizontally slid and installed on installation box;First manipulator can take and place workpiece, first manipulator can be opposite with the first workpiece mobile placement unit or second workpiece mobile placement unit located outside processing position;Second manipulator can take and place workpiece, second manipulator can be opposite with the first workpiece mobile placement unit or second workpiece mobile placement unit located outside processing position.In the scheme, first workpiece mobile placement unit and second workpiece mobile placement unit can be matched with first manipulator and second manipulator, to speed up the taking and placing cycle of workpiece, reduce the time length of single processing beat, reduce processing cost.

The utility model discloses a knife pouch capable of adjusting the machining range of a damping knife, which comprises a knife pouch body, the knife pouch body comprises an adjusting part used for being connected with a knife and a fixing part used for being connected with a knife holder, the adjusting part is provided with a placing hole used for placing the knife and is detachably connected with the knife, and the fixing part is connected with the knife holder. The center line of the containing hole and the center line of the cutter sleeve body are not collinear, so that the wall thickness of the adjusting part is different in the circumferential direction, and the highest point of the thinnest position of the wall thickness of the adjusting part is lower than a cutter point of a cutter. According to the cutter sleeve capable of enabling the machining range of the damping cutter to be adjustable, the machining range of the damping cutter can be effectively widened, and machining cost is saved while machining precision is guaranteed.

The invention relates to the technical field of adsorbent materials, and discloses a CoMn2O4 spinel adsorbent and a method for removing trivalent antimony in a water body by using the CoMn2O4 spinel adsorbent. The adsorbent is prepared by adopting a co-precipitation and low-temperature thermally induced crystallization synergetic green process: dissolving cobalt salt and manganese salt according to a stoichiometric ratio, dropwise adding a sodium hydroxide solution for co-precipitation, washing an obtained precursor, and drying at 80-120 DEG C under normal pressure for 12-48 hours to directly obtain the adsorbent. According to the method, the spinel material with low crystallinity, high specific surface area and rich surface hydroxyl is controllably synthesized by regulating and controlling the concentration of the precipitator and the drying condition, and the problems of active site loss and high energy consumption caused by traditional high-temperature calcination are avoided. When the composite material is used for treating wastewater containing trivalent antimony, antimony ions can be efficiently removed through the adsorption effect under the appropriate pH condition, excellent adsorption capacity is shown, the technology is simple, cost is low, safety is good, and an efficient and stable adsorption material and a feasible method are provided for water body antimony pollution treatment.

The application provides an asynchronous flotation enrichment method and application based on quartz and feldspar. The asynchronous flotation enrichment method comprises the following steps: S1, providing a to-be-processed ore material containing quartz and feldspar; S2, adding a tertiary amine cationic collector and then adding an anionic collector in the presence of a feldspar depressant, and then performing quartz flotation on the ore material to obtain a first feldspar and quartz rough concentrate; and S3, performing feldspar flotation on the quartz rough concentrate by using a feldspar combined collector in the presence of a feldspar activator and a quartz depressant to obtain a second feldspar and quartz concentrate. In the quartz flotation, the combination of the tertiary amine cationic collector and the anionic collector can realize the pre-enrichment of the quartz under neutral conditions; meanwhile, the pre-enrichment of the quartz reduces the feldspar content of the to-be-processed ore slurry in the feldspar flotation, and the use amount of the feldspar activator can be effectively reduced, so that the feldspar flotation under weakly acidic or neutral conditions is realized.

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

The invention discloses a piston pump and a clothes processing device, the piston pump comprises a pump body, a piston and a driving assembly, the pump body is of an integrated structure, and the pump body is provided with a piston cavity; the piston is arranged in the piston cavity in a reciprocating sliding mode in the axial direction of the piston cavity. The driving assembly is connected to the pump body, and part of the driving assembly extends into the piston cavity so as to drive the piston to slide in a reciprocating mode. The pump head is connected to the pump body and provided with a liquid outlet and a liquid inlet which are both communicated with the piston cavity. The pump body is of the integrated structure and is provided with the piston cavity, connecting points can be reduced, and therefore possible leakage points and fault points are reduced, the pump body can bear longer-time use, and the stability and reliability of the whole structure of the piston pump are improved. And one part of the pump body is used as a mounting part of the driving assembly, so that the number of parts of the piston pump is reduced, and the assembly process is simplified.

The utility model provides a kind of embedded part fixing device, for fixing embedded screw rod, including positioning unit and support unit, positioning unit includes locating plate and fixed assembly, multiple embedded screw rod is worn in locating plate and is fixed by fixed assembly, support unit includes support frame main body and multiple movable rods, support frame main body is surrounded in reinforced structure outside, each movable rod is movably connected with support frame main body, locating plate is installed on multiple movable rods.The utility model has the beneficial effects that embedded part and reinforced structure can be avoided directly contact, avoid disturbing reinforced structure due to concrete vibration etc.and affect embedded part positioning and fixing, embedded part fixing device can be reused, structure is simple, processing cost is low, can improve construction efficiency and construction quality.

The application provides a method for determining the type of defects in a single crystal silicon wafer, comprising the following steps: measuring the particles in the As-Grown state silicon wafer by LST to obtain a first measurement result, and determining a V-rich region according to the first measurement result and a first preset density value; and performing heat treatment on the silicon wafer, and again measuring the particles in the silicon wafer by LST to obtain a second measurement result, and determining a Pv region, an I-rich region and a Pi region according to the second measurement result, a second preset density value and a third preset density value, so as to accurately and effectively distinguish the four region types of the V-rich region, the Pv region, the Pi region and the I-rich region in the single crystal silicon wafer by using the particle density, the test result is obviously distinguished, the test stability is high and the repeatability is high, and the requirement of the defect partition type on the silicon wafer is reduced.