628results about How to "Improve processing stability" patented technology

The invention provides an electromagnetic field composite powder feeding type plasma arc additive manufacturing formability regulation and control method and system, and relates to the technical field of plasma arc additive manufacturing. The flowing direction and speed of liquid metal in a molten pool in the deposition process are regulated and controlled through the target composite electromagnetic field, and the morphology and the internal organization structure of a deposition layer are controlled; in the process of regulating and controlling the liquid metal in the molten pool, process parameters and molten pool dynamic image data in the deposition process are collected in real time, and a pre-trained state recognition model is used for conducting self-adaptive adjustment on the process parameters of a subsequent deposition layer; and after deposition of each layer is completed, a laser scanning system is adopted for measuring the actual geometric size and surface appearance of the deposition layer, deposition manufacturing of the next layer is executed based on the optimized composite electromagnetic field control parameters, the corrected layered slicing data and the process path, and the execution is executed circularly till manufacturing of the whole workpiece is completed.

The invention discloses an intelligent numerical control machining method and system for mold manufacturing, and the method comprises the steps: obtaining a to-be-cut pattern of a mold, planning a milling cutter feeding route, dividing the to-be-cut pattern into a plurality of milling cutter feeding sub-routes, determining milling cutter control tracks composed of spline curves, carrying out the clustering of the milling cutter control tracks, and obtaining a plurality of track sets; and in the milling process, a real-time machining track is collected, a curvature deviation value is calculated, if the curvature deviation value exceeds a preset value, a milling cutter control track is corrected, the milling cutter priority is ranked according to the size of the working radius, and proper track sets are screened out in sequence for milling till all the track sets are machined. Through intelligent path planning and real-time deviation correction, the use efficiency and machining precision of the milling cutter are remarkably improved, and high quality and high stability of mold manufacturing are ensured.

The utility model discloses a chemical mechanical polishing and planarization system, which at least comprises a polishing head. A plurality of air holes are formed in the lower surface of the hard disc, and a third air cavity communicated with the air holes is formed in the hard disc; at least part of the elastic unit is of an annular structure, the elastic unit is connected with the polishing head body and the hard disc, and a second air cavity is defined by the polishing head body, the elastic unit and the hard disc; a retaining ring; when the third air cavity is in a negative pressure state, the lower surface of the hard disc can make contact with and adsorb the wafer substrate, and the pressure in the second air cavity is controllable, so that the elastic unit is driven to flexibly move, the hard disc and the wafer substrate are assisted to float, and chemical mechanical polishing of the wafer substrate is achieved. The hard drive in the hard disc solves the problem that when the flexible film drives the wafer substrate to polish, the flexible film is pulled to cause fracture or elastic modulus change under the severe polishing condition, and the service life of the flexible piece is prolonged.

The invention discloses a preparation method and application of a heat-resistant halogen-free flame-retardant modified polycarbonate film, and belongs to the technical field of polycarbonate films. Comprising the following raw materials in parts by weight: 80-97 parts of a polycarbonate raw material, 0.05-2 parts of a dispersing agent, 0.3-0.6 part of a sulfonate flame retardant, 0.5-2 parts of an organic silicon flame retardant, 0.2-0.5 part of an anti-dripping agent, 0.05-0.2 part of a dispersing agent, 0.1-1 part of a release agent, 0.05-1 part of an antioxidant and 1-4 parts of black masterbatch. Wherein the dispersing agent and the release agent can improve the processing stability and film forming; the antioxidant can play a synergistic role, so that the oxidation resistance of the film is improved; the black master batch ensures that the film product is lightproof; the organic silicon flame retardant can improve the heat resistance and mechanical property of the film, can play a synergistic role with the sulfonate flame retardant and the anti-dripping agent, enhances the flame retardant property of the film, is stable in performance and not prone to falling off, and has application value in the new energy battery and energy storage industry.

The invention discloses a floating deburring tool and a part deburring method.The deburring tool comprises a rod handle, a connecting sleeve, a tool bar, a nut, a clamping sleeve, a tool bit and an adjusting mechanism, the rod handle and the tool bar are connected through the connecting sleeve, the clamping sleeve is clamped to the upper middle end of the tool bit, and the clamping sleeve is fixedly connected to the tool bar through the nut; the upper end of the tool bit sequentially penetrates through the nut and the tool bar and is connected with an adjusting mechanism arranged in the connecting sleeve, and the adjusting mechanism can drive the tool bit penetrating through the tool bar to achieve radial and axial floating along the central axis of the connecting sleeve. By the adoption of the deburring tool and the part deburring method, the burr and flash grinding treatment requirements of different parts can be met, the deburring tool is simple in structure and convenient to assemble and disassemble, and products obtained through deburring are good in consistency, high in efficiency, stable in product machining, high in reliability and suitable for application and popularization.

The invention belongs to the technical field of additive manufacturing, and particularly relates to an additive manufacturing method of an ultrahigh-strength steel-stainless steel interlayer heterogeneous structural part. Comprising the following steps that (1) a model is obtained, and an additive model is designed according to performance requirements needed by a structural part; (2) additive preparation is conducted, specifically, the type and specification of a base plate are selected, mechanical grinding and welding wire filling are conducted on the base plate, an additive path is planned according to the model, and a robot walking program is written; and (3) material adding is started, the optimal technological parameters are matched according to the planned material adding path, and material adding of the structural part is started and completed. The ultrahigh-strength steel-stainless steel heterostructure part obtained through the method has the excellent strength-toughness comprehensive mechanical property, the material adding efficiency is high, the interface of the ultrahigh-strength steel-stainless steel heterostructure part is free of the defects of holes, microcracks, unbonding and the like, and the surface quality is excellent.

The invention discloses a patch packaging manufacturing method of a driving power supply and the driving power supply manufactured by the patch packaging manufacturing method. The patch packaging manufacturing method comprises special-shaped surface-mounted pins, a carrier plate, a plastic packaging material and a device. The shapes of the special-shaped surface-mounted pins can be in various shapes (such as an I shape), the special-shaped surface-mounted pins can be made of materials such as a PCB or a resin plated metal structural part or a metal part, and the required number of metal bonding pads are manufactured on the two faces of the special-shaped surface-mounted pins according to application requirements and are communicated. The overall thickness of the special-shaped surface-mounted pins is required to be larger than that of the highest device; the metal bonding pad C 303 of the first surface 301 of the special-shaped surface-mounted pin is welded on the second surface 202 of the carrier plate, and the metal bonding pad D 304 of the second surface 302 of the special-shaped surface-mounted pin is exposed. According to the driving power supply manufactured through the patch packaging manufacturing method of the driving power supply, the flat and small design of the patch power supply is achieved, and the problem that the board arrangement space of high-density small-space equipment is insufficient is well solved.

The invention discloses a continuous conveying device for heavy oil cleaning agent production, and relates to the technical field of heavy oil cleaning agent production, in particular to a continuous conveying device for heavy oil cleaning agent production, which comprises a first conveyor and a second conveyor, one end of the first conveyor is connected with a feeding machine in an attached mode. According to the continuous conveying device, the roller structures are arranged on the surfaces of the guide plate and the limiting side plate, when the braking plate enables containers in a machining area to be kept relatively stable, the conveying belt can conduct continuous transmission, workpieces at the front end can continue to be conveyed forwards in order by means of the transmission conveying belt and the roller structures on the two sides of the limiting side plate, stagnation of the containers at the front end is avoided, and the machining efficiency is improved. According to the packing machine, the number of starting and stopping times of the whole conveying equipment is reduced, due to intermittent rotation of the push disc, the containers which are originally tightly arranged are rearranged, an interval which is more convenient to grab is formed between the containers, the grabbing time is shortened, and the packing efficiency is improved.

The invention provides a method for forming an embedded source-drain region. The method comprises the following steps of: covering a semiconductor layer and a gate stack structure to form a sacrificial layer; covering the side wall of the gate stack structure with a sacrificial layer to form an auxiliary side wall; and covering the first device region with a patterned mask layer, etching the second device region by taking the auxiliary side wall and the sacrificial layer as masks to form a sigma trench extending to enter the lower part of the gate stack structure, and simultaneously thinning the sacrificial layer covering the top surface of the gate stack structure of the second device region. According to the forming method, the etching loss of the gate stack structure of the corresponding device region can be reduced, the height difference of the isolation side walls between the PMOS region and the NMOS region is reduced or eliminated, the influence of different etching loads on the subsequent process is avoided, and the process stability is improved on the premise that the process cost and the process complexity are not improved.

The invention discloses adjustable feeding equipment for stainless steel product machining, and relates to the technical field of stainless steel wafer machining, in particular to the adjustable feeding equipment for stainless steel product machining, which comprises a feeding area and a discharging area, the feeding area is positioned at one end of the discharging area, and the discharging area consists of a discharging base and a steering seat; and a driving steering gear and a driven steering gear are rotationally connected to the interior of the discharging base. According to the adjustable feeding equipment for stainless steel product machining, when a set of coiled plates are discharged to be close to the tail end, raw materials can be mounted on the mounting disc on the other side, then horizontal steering is conducted through the steering base, the production preparation time is further shortened, the bracket can easily jack the coiled materials to the proper height to be parallel to the mounting disc through the first hydraulic jacking cylinder, the mounting steps are simplified, and the production efficiency is improved. The height of the feeding area can be adjusted through a second hydraulic jacking cylinder, the feeding area is accurately in butt joint with external stamping equipment, the position of a limiting plate can be adjusted according to the specifications of the plates, and the plates are prevented from deviating in the conveying process.

The invention relates to the technical field of data processing, and provides an error compensation method, device and equipment for shaft part machining and a storage medium, and the method comprises the steps: obtaining the measurement data of the actual size of a shaft part, calculating the deviation data, inputting the measurement data and the deviation data into a preset neural network compensation model, compensation parameters and machining stability parameters are obtained, the path of a machining tool is adjusted based on the compensation parameters, a target path machining instruction is obtained and subjected to spectral analysis, a corrected instruction is obtained and checked through the machining stability parameters, and the shaft part is machined after the target machining instruction is obtained. The actual size of the shaft part is measured, deviation is calculated, a machining path is adjusted in combination with a neural network compensation model, a machining instruction is optimized through a spectral analysis technology, and the problems that errors of dynamic changes in the machining process cannot be coped with, tremor is likely to occur in the machining process, and the part compensation difficulty is aggravated are solved. And the problem of insufficient real-time error correction exists.

The invention relates to a low-cost composite metal catalyst which is a CuO / ZnO / Al2O3 composite metal catalyst, and the molar ratio of CuO to ZnO to Al2O3 is (6-4): (3-4): (0.5-1). The composite catalyst is prepared by the following steps: adding carbonate into a mixed salt aqueous solution of copper salt, zinc salt and aluminum salt for co-precipitation, grinding a filter cake, and roasting at high temperature. According to the catalyst, 1, 12-dodecanedioic acid dimethyl ester which is low in price and easy to obtain can serve as a raw material, 1, 12-dodecanediol is prepared through catalytic hydrogenation under the milder condition compared with the prior art, high yield and low cost are achieved on the premise that the process condition control difficulty is greatly reduced and the process safety is improved, and the problems that in the prior art, 1, 12-dodecanedioic acid dimethyl ester is synthesized, and the cost is low are solved. The technical problems of high energy consumption, expensive catalyst, harsh reaction conditions and difficult realization of industrial production in the reaction process of 1, 12-dodecanediol in the prior art are solved.

The invention relates to the technical field of optical fiber processing, and discloses a multi-core-diameter optical fiber ultrasonic cutting system under uniform stress, which comprises a clamping symmetrical assembly, a horizontal tension driving assembly, an ultrasonic cutting assembly and a cutting knife pushing assembly, an optical fiber is clamped through the cooperation of the pressing plate and the clamping assembly base; the clamping assemblies are slidably connected with the horizontal tension driving assembly, the two clamping assemblies are driven by the horizontal tension driving assembly to move reversely, and horizontal tension is applied to the optical fiber, the ultrasonic cutting assembly is slidably connected with the cutting knife pushing assembly, and the cutting knife pushing assembly is arranged on one side of the clamping symmetrical assembly and located between the two clamping assemblies. The cutting knife pushing assembly drives the ultrasonic cutting assembly to move to cut the optical fiber; the optical fiber cutting device can effectively meet the cutting requirements of optical fibers with different core diameters, the flatness of the cut end face is remarkably improved, and burrs and cracks are reduced.

The invention discloses a side-flow type electrolytic machining device and method for sealing a casing cavity, an electrolytic machining machine tool comprises a machine tool rotary table and a machine tool spindle, the electrolytic machining device comprises a clamping assembly, a clamping assembly, a clamping assembly and a clamping assembly, the clamping assembly is used for clamping a casing workpiece and fixing the casing workpiece to the machine tool rotary table, and the machine tool rotary table is connected with the positive electrode of a power source; the cathode assembly is connected with the machine tool spindle and arranged on one side of the cartridge receiver in the radial direction of the cartridge receiver so as to form a machining gap with the outer surface of the cartridge receiver, and the machine tool spindle is connected with the negative electrode of the power source; the sealing assembly comprises a sealing sleeve and a pressing mechanism, the sealing sleeve is provided with an inner cavity, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are located on the two sides of the sealing assembly respectively and communicate with the inner cavity, and the sealing assembly is arranged on the cathode assembly in a sleeving mode so that the machining end of the cathode assembly can be located in the inner cavity; the pressing mechanism is used for enabling the sealing assembly to be pressed and sealed on the outer surface of the casing so as to seal the inner cavity, and the liquid inlet is used for introducing electrolyte to flow through the machining gap and be discharged through the liquid outlet.

The invention relates to the field of numerical control machining, and discloses a bevel edge machining method based on a five-axis numerical control system, which comprises the following steps: (1) fixing a workpiece: mounting the workpiece on a rotary worktable of the five-axis numerical control system, fixing the workpiece through a clamp, and ensuring that the workpiece can be kept stable in the machining process through a rotary shaft of the five-axis numerical control system; (2) inputting machining parameters: inputting a three-dimensional model of the workpiece and related parameters of bevel edge machining in a five-axis numerical control system; (3) generating an initial path: based on the three-dimensional model of the workpiece, generating an initial machining path through a five-axis numerical control system, and calculating a five-axis linkage movement track and a tool posture of the tool; through a self-adaptive path optimization algorithm of the workpiece surface curvature and the area complexity, the step pitch is automatically shortened in a complex bevel edge area so as to improve the machining precision, machining of a complex curved surface and an irregular bevel edge can be better adapted, it is ensured that a tool is in the optimal machining state all the time, and unnecessary path redundancy is reduced.

The invention relates to a method for preparing a heterostructure magnesium alloy based on low-temperature friction stir additive in the field of metal processing, and designs a high-quality and high-efficiency cooling tool, which mainly comprises the following steps: firstly, cooling alcohol to low temperature by using liquid nitrogen; then the magnesium alloy plate to be machined is fixed to a cooling tool in a lap joint mode, and the tool mainly comprises a device body (1), a cooling liquid inflow hole (2), a cooling liquid outflow hole (3), a workpiece containing groove (4), a liquid storage chamber (5), a pressing plate (6) and fastening screws (7); then low-temperature alcohol is introduced, an advancing path and technological parameters are set, first-layer stirring friction additive manufacturing is conducted, and in the machining process, a stirring head and a workpiece are always kept to be submerged in cooling liquid; then, the surface obtained after material adding is milled to be flat, a layer of plate is overlaid on the other unmachined surface again, and the plate is fixed into the workpiece containing groove; and finally, second-layer friction stir additive manufacturing is conducted on the other face of the plate according to the same parameters and the same path. The method can be suitable for additive manufacturing of low-melting-point metal such as magnesium alloy and aluminum alloy at the same time, the multi-scale gradient heterostructure magnesium alloy can be prepared at the same time, the preparation efficiency is improved, and high-quality and low-cost preparation of heterostructure materials is achieved.

The invention discloses a laser welding method for a large-size ultrathin diaphragm assembly. The laser welding method comprises the steps that the butt joint portion of a diaphragm support and a diaphragm is cleaned; mounting the diaphragm bracket and the diaphragm on a welding positioning tool; the welding positioning tool is clamped to an external laser welding machine rotary table, a welding seam is aligned, laser positioning welding is conducted, and whole-circle positioning welding of the diaphragm support and the diaphragm is completed; and a positioning pressing plate in the welding positioning tool is replaced with a welding pressing plate, laser welding is conducted on the diaphragm and the diaphragm support, and the diaphragm assembly is obtained. By means of the method, efficient and high-quality welding of the large-size ultra-thin diaphragm can be achieved, the welding qualification rate of the diaphragm assembly is increased, the problems that when the large-size ultra-thin diaphragm is welded at present, weld gaps, weld beading, weld joint sinking, wave weld joints and the like are prone to occurring are effectively solved, and the purpose that the product qualification rate is increased to 95% from 30% is achieved.

The invention belongs to the technical field of preparation of barium titanate, and particularly relates to nanoscale tetragonal-phase barium titanate and a confinement preparation method thereof. The preparation method comprises the following steps: pumping a solution of barium titanium salt and a solution of a precipitator into a mixing reactor of a microchannel reactor for confinement mixing, and aging the obtained mixed slurry to obtain a barium titanate precursor; the flow velocity of the solution of the barium titanium salt and the flow velocity of the solution of the precipitant are independently 20-70 mL / min; and mixing the barium titanate precursor, a barium source and water for hydrothermal reaction to obtain the nanoscale tetragonal-phase barium titanate. The method can be used for efficiently and stably preparing the nanoscale tetragonal barium titanate which is small in size, high in crystallinity, high in particle size uniformity, narrow in particle size distribution and high in tetragonal phase purity.

The invention discloses thin film deposition equipment and a deposition method. The thin film deposition equipment comprises a first gas inlet system located at the top in a reaction cavity and used for introducing process gas and a precursor, and the process gas is used for dissociating to generate plasma; and the second gas inlet system is positioned at the bottom in the reaction cavity and is used for introducing current-carrying gas from bottom to top when the precursor is introduced from top to bottom by the first gas inlet system to deposit the conductive film on the wafer, so that the current-carrying gas forms a protective gas curtain in a plasma field in the upper and lower areas of the edge of the wafer. By means of the thin film deposition equipment, the local density of the plasma fields in the upper area and the lower area of the wafer edge in the technological process of conductive thin film deposition can be adjusted, the stability of the plasma fields is improved, and therefore the abnormal discharge phenomenon occurring in the deposition process is reduced, and the film forming quality and the technological stability are improved.

The utility model discloses a device for punching and pressure point processing of a solar frame, which comprises a rack fixedly arranged on the ground, a PPU (Polyurethane) manipulator is arranged at the top of the rack, a horizontal pneumatic punching machine is arranged between the rack and the PPU manipulator and close to the feeding side, and the horizontal pneumatic punching machine is connected with the PPU manipulator. A servo point pressing device is arranged between the machine frame and the PPU mechanical arm and close to the discharging side. The servo point pressing device comprises a servo point pressing assembly and an automatic overturning assembly. Through the optimized and improved design of the device, the machining stability of the device is higher, the situation of midway deviation in the production and machining process is avoided, the device can meet the production requirements of solar frames with various lengths, and the full-automatic frame punching and point pressing procedures are achieved; and therefore, the technical effects of increasing the production speed, improving the processing efficiency and reducing the production cost are achieved.

The utility model belongs to the technical field of integrated circuit boards, and particularly relates to a fixing device for integrated circuit board production and processing. Comprising a supporting seat; the workbench is arranged on the supporting seat; the fixing mechanism is arranged on the workbench and used for clamping and fixing the circuit board; the damping mechanism is arranged on the workbench, and the damping mechanism is matched with the fixing mechanism and used for achieving a damping effect when the fixing mechanism clamps the circuit board; the heat dissipation mechanism is arranged on the workbench and used for conducting heat dissipation on the circuit board; the heat dissipation mechanism comprises through grooves formed in the front side and the rear side of the workbench, and the through grooves extend upwards to penetrate through the workbench; the supporting cylinder is arranged in the through groove; the heat dissipation fan is arranged in the supporting cylinder in a bolt connection mode; the power source is used for providing power and driving the cooling fan to rotate; and the dustproof net is arranged on the upper side in the through groove. The utility model provides a fixing device for production and processing of an integrated circuit board, which can dissipate heat of the integrated circuit board.

The invention relates to the technical field of on-machine measurement control, and discloses a V-shaped groove guide rail on-machine machining measurement system and method. The control end of the measuring body is connected to the driving end of a machine tool through a controller, and the measuring end of the measuring body and a grinding wheel of the machine tool are placed in a V-shaped groove of a guide rail to be measured in parallel. The measuring body comprises a sensor and two groups of contraction measuring rod assemblies; the two groups of contraction measuring rod assemblies are correspondingly arranged at the two ends of the sensor respectively and are connected to the control end of the controller through the sensor; and the measuring ends are measuring balls arranged at the end parts of the two groups of telescopic measuring rod assemblies. According to the invention, through integration of measurement and processing functions, real-time measurement can be carried out without interruption of the processing process, so that the overall efficiency of measurement and processing is significantly improved. By means of the mode of measuring and machining at the same time, the conversion time between measuring and machining in a traditional method is shortened, and the production process is accelerated.

The invention relates to the field of casting, and discloses a production method of green sand as-cast high-plasticity nodular cast iron QT450-18, which comprises the following steps of: preparing pig iron, waste steel and foundry returns according to a certain proportion, and preparing the green sand as-cast high-plasticity nodular cast iron QT450-18 by using auxiliary materials such as a silicon carbide pretreatment agent, a high-temperature graphitization carburant, a rare-earth magnesium silicon iron nodulizer, a silicon barium inoculant and a silicon strontium inoculant. And purity and component stability of molten iron are ensured. In the smelting process, purification and adjustment are carried out through accurate temperature control and segmented addition of auxiliary materials, then spheroidizing is carried out through a pouring method, and the microstructure of a casting is optimized through ladle-to-ladle inoculation and stream inoculation. The final casting has excellent mechanical properties, including tensile strength greater than or equal to 440 MPa, yield strength greater than or equal to 300 MPa, elongation greater than or equal to 16%, and V-shaped notch normal temperature impact absorption energy greater than or equal to 8 J. The method is simple and convenient to operate, high in production efficiency and suitable for large-scale industrial production.

The invention relates to a defect detection method and device applied to additive manufacturing and electronic equipment. The method comprises the steps that at least one layer of component material is printed on a manufacturing substrate, and multiple layers of component materials are stacked to form a target component; after any layer of component material is printed, defect detection is conducted on the component material on the current manufacturing substrate through air coupling ultrasonic guided waves; after defect detection is performed on a component material on a current manufacturing substrate through air coupling ultrasonic guided waves, at least one layer of component material is printed on the manufacturing substrate. According to the defect detection method, non-contact air coupling ultrasonic guided waves are adopted for defect detection in the additive manufacturing process, on the premise that the components are not damaged and the additive machining environment is not separated, the manufactured components can be detected in real time, the bonding condition between all layers of component materials is evaluated, and the defect detection accuracy is improved. The layering and debonding conditions of component materials are found in time, and the machining quality and the process stability of additive manufacturing are improved.

The invention discloses a complex profile part ultrasonic vibration grinding device suitable for a surface grinding machine and an operation process thereof, a workpiece is fixed at the output end of a stepped amplitude-change pole of an ultrasonic vibration device through a bolt, and a sliding bearing supporting seat is mounted in the middle of a shell of the ultrasonic vibration device and plays a role in supporting a sliding bearing; the tail portion of the ultrasonic vibration device is fixed to the indexing chuck through a chuck, the servo motor drives the indexing chuck to achieve accurate indexing, and the sliding bearing supporting seat and the indexing chuck are fixed to a surface grinding machine workbench through bolts. The ultrasonic generator is started, a high-frequency electric signal is transmitted to the piezoelectric ceramic transducer assembly through the cable, the high-frequency electric signal is converted into high-frequency longitudinal vibration, and the high-frequency longitudinal vibration is transmitted to the workpiece after being amplified by the stepped amplitude-change pole, so that the workpiece generates high-frequency ultrasonic vibration. Ultrasonic vibration auxiliary grinding of complex surface parts on a surface grinding machine is achieved, the removal rate of grinding materials is increased, the grinding force and the grinding temperature are reduced, and grinding burns are reduced.

The invention relates to a pre-fermentation method for improving biogas production of straws and a biogas production fermentation system. The pre-fermentation method comprises the following steps: S1, preparing a mixed microbial agent to be fermented; the mixed microbial agent is prepared by inoculating the following zymophyte in parts by weight into a fermentation culture medium according to the total inoculation amount of 3-10% (v / v): 5-50 parts of bacillus subtilis, 10-20 parts of white-rot fungi, 5-10 parts of aspergillus oryzae, 5-10 parts of trametes versicolor and 5-10 parts of trichoderma viride; s2, uniformly mixing the mixed microbial agent with the micro-nano bubble water, and fermenting to form an enhanced hydrolysis bacterium solution containing a microbial agent fermentation solution and an enzyme solution; s3, spraying enhanced hydrolysis bacteria liquid onto the straws for enhanced hydrolysis so as to complete pretreatment before fermentation and biogas production; wherein the volume of the reinforced hydrolytic bacteria liquid required by each kg of straw is 3-5L. Compared with the prior art, the mixed microbial agent and the micro-nano bubble water are used for carrying out cooperative treatment on the straw, so that the gas production efficiency and the methane production amount of the straw can be effectively improved.

The invention discloses a full-automatic horizontal machining center, and belongs to the technical field of machine tools, the full-automatic horizontal machining center comprises a square frame, a cutter feeding system, a cradle, a left supporting seat, a right supporting seat, a servo rotation driving device and a brake device, the cutter feeding system is arranged on the square frame, the cradle is used for clamping and bearing a machined workpiece, and the left supporting seat is arranged on the right supporting seat; the left supporting seat and the right supporting seat are arranged at the left end and the right end of the square frame, a left supporting shaft on the cradle is installed on the left supporting seat through a bearing, a right supporting shaft on the cradle is installed on the right supporting seat through a bearing, the left supporting shaft and the right supporting shaft are coaxially installed, and the servo rotation driving device is used for driving the left supporting shaft to rotate. The brake device is used for limiting rotation of the right supporting shaft. The cradle is of a latticed frame plate structure made of materials which are light in weight and high in bearing capacity. According to the cradle, the latticed frame plate structural design is adopted, a horizontal rotating system of the cradle is moved away, the weight of the cradle is greatly reduced, the moving inertia is reduced, the displacement precision of the cradle is improved, and therefore the machining precision and stability of the machining center are improved.

The invention discloses a drilling method for a right-angle square groove, and relates to the field of printed circuit board processing, and the drilling method comprises the following steps: 1, determining the selection of a minimum drill bit according to the thickness of a processed board body and the number of laminated boards, determining the size of the drill bit supported by the thickness and the number of laminated boards, enabling the drill bit with a smaller diameter to generate a smaller R angle, and enabling the drill bit with a smaller diameter to generate a smaller R angle; the drilled right-angle square groove looks closer to an ideal right-angle shape; secondly, the drill bit determined in the first step serves as the minimum drill bit size, namely the first drill bit, the four corners of the groove body are determined through the drill bit, the R angle is reduced to the maximum extent, and the first drill bit serves as the first tool for machining, so that the outline of the right-angle square groove is closer to the perfect right-angle shape. According to the drilling method for the right-angle square groove, by optimizing drill bit selection, the machining sequence and technological parameters, the machined R angle is effectively reduced, the precision and consistency of the right-angle groove are improved, and the requirement of the industry for the high-precision right-angle groove is met.

The invention belongs to the technical field of fine chemical synthesis, and discloses a continuous micro-channel chloroethylene carbonate synthesis method, which comprises: 1, introducing a gas-state reactant into a first pipe through a gas inlet, and introducing a liquid-state reactant into the first pipe through a liquid inlet; 2, the gaseous reactant pushes the liquid reactant to enter the reaction tube of the reactor from the first tube, and a reaction is carried out under the condition that the ultraviolet lamp tube emits ultraviolet light and irradiates the reaction tube, and a gas-liquid mixture containing a target product is obtained; and 3, enabling the gas-liquid mixture to flow through a gas-liquid confluence inlet and a gas-liquid confluence outlet of a confluence device, and finally introducing the gas-liquid mixture into a gas-liquid separator for gas-liquid separation to obtain a target product. The method is simple to operate, safe and efficient, an amplification effect does not exist, and the prepared chloroethylene carbonate product is stable in quality, relatively high in yield and easy for industrial large-scale continuous production.