144 results about "Equipment requirement" patented technology

This invention provides a method for producing small-diameter, thick-walled near-α-type titanium alloy tubing and its application. This method, through the use of cladding and heated rolling, increases the deformation per rolling pass, reduces the number of rolling passes, and results in a finer microstructure and better mechanical properties in the heated-rolled tubing. Simultaneously, the composite material composed of the cladding layer and silica aerogel effectively prevents the alloy rod from contacting air, avoiding further surface oxidation and reducing the thickness of the oxide layer on the rod surface. Furthermore, the composite material forms a "thermal insulation layer" on the surface of the alloy rod, preventing large temperature differences between the surface and core during heated rolling, thus ensuring better microstructure uniformity and surface quality. In this invention, the cladding process expands the selection of heating furnaces and reduces equipment requirements.

The invention provides a dam filler compaction quality continuous detection method based on compaction vibration asymmetry, and the method comprises the steps: taking a vibration period as a unit, carrying out the segmentation and extraction of a filtered acceleration signal, and obtaining an acceleration signal of each vibration period, determining an acceleration signal point set A1 of the vibrating wheel above the balance position and an acceleration signal point set B1 of the vibrating wheel below the balance position; overturning the acceleration signal point set B1 to a positive value along the t axis, and translating to obtain an acceleration signal point set B2; and respectively fitting the acceleration signal point set A2 and the acceleration signal point set B2 by adopting a sine function, and calculating to obtain a compaction vibration asymmetry index CVAI. The method directly performs time domain analysis on the acceleration, has the advantages of high precision and simple equipment requirements, can effectively guarantee the dam filling quality and improve the dam filling efficiency, and can also be used for earth and stone filling engineering construction of roads, railways, airports and the like.

The invention discloses a corrosion method of an Al Si 10Mg alloy grain boundary, which mainly comprises the following steps of: 1, preparing a corrosion liquid which comprises the following components: 150mL of NaOH, 8-10g of NaOH and 3-5g of NaOH; 2, embedding an Al Si 10Mg sample; thirdly, the embedded samples are sequentially polished with abrasive paper from 400 meshes to 7000 meshes; 4, roughly polishing the ground sample; 5, smearing a surfactant on the sample subjected to rough polishing, and then carrying out fine polishing; 6, cleaning the polished sample with industrial alcohol; 7, heating the prepared corrosive liquid to 60-80 DEG C, and corroding the sample for 40-60 seconds; 8, cleaning the sample with industrial alcohol after corrosion patterns appear on the surface of the sample; and 9, carrying out drying treatment. After the method is used for corroding the Al Si 10Mg alloy, the crystal boundary of the alloy can be clearly observed, and the method is low in equipment requirement, simple in operation step, capable of saving cost, good in stability and suitable for researching the grain morphology, the grain size, the microstructure performance and the like of the Al S i 10Mg alloy.

The invention discloses a corrosion display method of a TA22 titanium alloy grain structure. The method comprises the following steps: 1, machining a TA22 titanium alloy sample to form a microscopic structure observation plane, and grinding and washing the microscopic structure observation plane; 2, mechanical polishing is conducted till the surface is flat and bright and free of scratches and dragging; 3, anodic oxidation coating treatment; 4, immersing into an etchant solution for etching; and 5, placing under a metallographic microscope, and observing the metallographic microstructure in a way of transparent field observation. According to the method, the TA22 titanium alloy is subjected to anodic oxidation film coating and then subjected to erosion film removal, and a method for judging the grain size by observing different bright and dark contrast in a metallographic structure in a polarized field after film coating is abandoned; according to the method, the grain boundary structure in the TA22 titanium alloy metallographic structure can be clearly, accurately and intuitively observed by directly adopting a transparent field under the metallographic microscope, a polarized light view field does not need to be switched, the equipment requirement on the metallographic microscope is greatly reduced, and the method is easy to operate and suitable for popularization and application.

The application belongs to the technical field of deep-sea lander, and discloses a design method and system of a deep-sea landing buffer based on a filled TPMS structure, which comprises the following steps: S1, designing and preparing a filled TPMS structure; S2, performing a quasi-static compression test on the filled TPMS structure; S3, performing a dynamic impact performance test on the filled TPMS structure; S4, selecting a filled TPMS structure meeting preset requirements based on the results of the quasi-static compression test and the dynamic impact performance test, and designing a buffer system of a deep-sea lander; and S5, optimizing the buffer system of the deep-sea lander according to different application scenarios and equipment requirements. The application further explores the possibility of filling a magnetic fluid into a TPMS structure and applies the novel filled TPMS structure to a deep-sea landing buffer, thereby providing an efficient buffer solution for deep-sea exploration equipment.

The invention belongs to the technical field of optical cables, and discloses a composite structure butterfly-shaped leading-in optical cable which is provided with a cable core and at least one protection layer wrapping the cable core, the cross section of the cable core is square, and the cable core comprises 2n butterfly-shaped units, four first insulation wires and third insulation wires with the number equal to the square number of n; the cable is characterized in that in the cable core, n third insulated wires form a group, n groups are formed, the n groups of third insulated wires are stacked to form a power transmission unit with a square cross section, the power transmission unit is located in the center of the cable core, n / 2 butterfly-shaped units are arranged in the length direction and are tightly attached to and aligned with one side of the power transmission unit, four first insulated wires are located at the four corners of the cable core, and n is larger than or equal to 1 and smaller than or equal to 2. N is a positive even number. The device has the main beneficial technical effects of simple structure, easiness in manufacturing, low equipment requirement, high production speed, high percent of pass and easiness in stacking and management.

The invention discloses a method for preparing a reinforced epoxy resin composite material from a retired fan blade, and belongs to the technical field of recycling of composite materials. The method comprises the following steps: carrying out mechanical crushing and screening on the retired fan blade to obtain non-metal powder; preheating epoxy resin, sequentially adding the nonmetal powder, the defoaming agent and the coupling agent, stirring, and vacuumizing to obtain a mixed system a; adding a curing agent and titanium dioxide powder into the mixed system a, stirring and vacuumizing to obtain a mixed system b; and finally, pouring the mixed system b into a mold coated with a release agent, curing at normal temperature, and demolding to obtain the reinforced epoxy resin composite material. According to the invention, high-value utilization of components such as glass fibers in the retired wind power blade is realized; the process is simple, equipment requirements are low, and industrial popularization potential is achieved.

According to the anodic oxidation technology suitable for the 6061 aluminum alloy, multi-component silica sol is adopted for conducting room-temperature dipping hole sealing and low-temperature curing on a 6061 aluminum alloy anodic oxidation film, and technology energy consumption and equipment requirements are reduced. The dense silicon network seals the membrane holes, prolongs the diffusion path of a corrosive medium and prevents the corrosive medium from invading the substrate, thereby greatly improving the corrosion resistance of the membrane layer and inhibiting pitting corrosion.

The invention discloses an equipment maintenance equipment demand prediction method and system based on digital twinning, and relates to the technical field of equipment maintenance equipment demand prediction, and the method comprises the steps: collecting the historical data and state data of target equipment, and obtaining the actual operation state of each piece of single equipment and each replaceable unit; synchronizing the actual operation state of each single device and each replaceable unit to a preset digital twin model as an initial state of simulation; determining task environment data; establishing an equipment state characteristic space-time relation model; inputting the equipment state characteristic space-time relation model and the task environment data into a preset digital twinborn model, calculating a sensitivity coefficient at the current moment, and constructing an equipment use failure rate model based on the sensitivity coefficient at the current moment; determining a simulation moment unit fault condition corresponding to the equipment use plan; and carrying out statistics on maintenance equipment requirements of the target equipment. According to the invention, the technical problem of large difference between the simulation result and the reality in the traditional equipment maintenance equipment demand prediction simulation is solved.

The invention discloses a surface strengthening process capable of improving the high-cycle fatigue performance of a TiAl alloy casting, which is characterized by comprising the following steps of: 1, carrying out sand blasting treatment on the casting with the mesh number of 40-120; secondly, dirt on the surface of the casting obtained in the first step is removed; and thirdly, shot blasting treatment is conducted on the casting obtained in the second step, and the shot blasting strength ranges from 0.1 mmN to 0.3 mmN. In the first step, the fatigue strength of the casting after sand blasting can reach the level of a standard smooth sample by reasonably selecting the mesh number of sand blasting sand, and then in the second step, the fatigue strength of the casting after sand blasting and shot blasting can be remarkably improved compared with that of the standard smooth sample by reasonably selecting the shot blasting strength. The surface strengthening process disclosed by the invention is simple, short in flow, low in requirements on production equipment and simple and convenient to operate, can be applied to high-temperature rotating parts such as aero-engine low-pressure turbine blades and automobile engine impellers, and has great application and popularization values.

The invention relates to the technical field of magnesium alloy materials, in particular to a low-cost flame-retardant magnesium alloy and a low-requirement preparation method thereof, and the low-cost flame-retardant magnesium alloy comprises the following raw materials in parts by weight: 7.0-7.2 wt.% of Al, 0.9-1.2 wt.% of Zn, 0.3-0.5 wt.% of Ca, 0.2-0.3 wt.% of Sr and the balance of Mg. The added rare earth element Sr can remarkably improve the flame retardant property of the alloy, the price is lower than that of rare earth elements such as Y added in current mainstream flame retardant alloy, the homogenization process requirement is lower, the alloy preparation cost is greatly reduced by cooperating with the smelting system, and the requirement for equipment is high under an existing flame retardant magnesium alloy smelting system, so that the cost is low. The smelting conditions are harsh, the smelting conditions and system greatly reduce the requirements of flame-retardant magnesium alloy smelting for devices and personnel, the magnesium alloy technology can be better popularized, and the method has great significance in practical application.

The invention discloses a modular metal rubber iron core of an axial motor, a preparation method and a preparation mold, and mainly relates to the technical field of motor iron core design and manufacturing. The modularized metal rubber iron core of the axial motor comprises a middle-layer iron core and outer-layer iron cores arranged at the two ends of the middle-layer iron core, the outer-layer iron cores and the middle-layer iron core are made of metal rubber materials, and the outer-layer iron cores and the middle-layer iron core are made of different materials; vibration generated by operation of the motor can be buffered, noise transmission is reduced, iron loss is reduced, reliable operation of the motor is guaranteed, and operation efficiency is improved; and the structure is simple, the equipment requirement is low, the manufacturing difficulty and cost are greatly reduced, the preparation process is simple and convenient, the production period can be effectively shortened, the production efficiency is improved, and the production cost is further reduced.

The utility model discloses an installation tool for a scraper rotor of an internal flow sieve, relates to the technical field of papermaking equipment, and aims at solving the problems that in the prior art, the assembly difficulty is large, the requirement for needed equipment is high, the consistency and accuracy of the size are difficult to guarantee, and the stability of the equipment is influenced. The tool assembly comprises a sliding column, a fixed disc at the top of the sliding column, a screw rotatably connected in the sliding column, a servo motor in the base, a pushing nut slidably connected on the screw, a detection block slidably connected on a detection disc, a rack below the detection block, a driven gear rotatably connected on the detection disc at the side edge of the detection block, and the driven gear engaged with the rack. According to the utility model, the detection disc is driven by the detection disc and the screw rod to move up and down so as to realize accurate assembly of the scraper rotor assembly, and the detection block is controlled by the driving gear so as to realize assembly of scraper rotor assemblies with different diameters.

The invention discloses a composite lubricating sleeve with a pile sinking soil plug reducing effect. The device comprises a flexible substrate and a microstructure anti-drag layer which are compounded together, the outer circumferential face of the flexible base is attached to the inner circumferential face, close to a pile shoe, of a prefabricated pipe pile, and solid lubricating particles are evenly mixed in the flexible base. The microstructure resistance reduction layer is composed of a plurality of micro convex points which are regularly distributed on the inner circumferential face of the flexible substrate in a dot matrix shape, and solid lubricating particles are packaged in the micro convex points. According to the method, the pile sinking construction difficulty and equipment requirements can be effectively reduced, pile body deviation and equipment energy consumption caused by too large resistance are reduced, and the construction cost is directly saved. The core innovation of the method lies in that the blocking forming process is actively intervened through a multiple cooperation mechanism of solid particle lubrication, micro-convex-point blocking and micro-rolling, the controllability of the pile sinking process and the perpendicularity of a pile body are greatly improved, and the pile sinking quality is improved from the source. The composite lubricating sleeve is unique in technical path, and the technical span from passive treatment to active prevention and control is achieved.

The invention discloses a machining device and method for an annular eccentric spigot part. The machining device comprises a bottom plate, a pin is arranged in the middle of the bottom plate, the annular eccentric spigot part is arranged on the bottom plate, and the annular eccentric spigot part is connected and fastened to the bottom plate through screws. The machining device is used for positioning and aligning to machine phi D1 and phi D2 so as to guarantee the dimensional precision of the phi D1 and phi D2 and the dimensional precision of the eccentric distance L between the centers of the phi D1 and phi D2 and the center of phi D. The machining device has the advantages that the requirement for machining equipment is not high, small and medium-sized machining factories have the equipment capacity, and the machining device can be used in cooperation with existing equipment for machining. And meanwhile, the machining efficiency is high, the machining cost is low, the requirement for equipment operation skills is not high, the machining quality is easy to guarantee, and meanwhile a thought for solving problems is provided for machining of similar parts.

The utility model relates to the technical field of pipe pile hoisting, in particular to a hoisting beam for turning over a steel pipe pile, and aims to solve the problem that the requirement for hoisting pipe pile turning-over equipment is high, the hoisting beam comprises a hoisting beam body arranged above the steel pipe pile, and two lower steel wire rope rings are arranged at the bottom of the hoisting beam body; lifting lugs used for being matched with a lower steel wire rope ring are arranged on the two sides of the steel pipe pile correspondingly, a tail steel wire rope ring is arranged on one side of the lifting beam body, a C-shaped tail slipping clamp used for being in butt joint with the tail of the steel pipe pile is arranged on the tail steel wire rope ring, and a winding and unwinding mechanism used for winding and unwinding the tail steel wire rope ring is arranged on the lifting beam body. And a hoisting mechanism matched with a crane is arranged at the top of the hoisting beam body. The overturning device has the advantages that efficient overturning operation on the steel pipe pile is achieved, the overturning process is simplified, the operation efficiency is improved, and the equipment requirement and the construction cost are reduced.

The utility model relates to the technical field of slope net pressing and buckling, and discloses an automatic slope net pressing and buckling mechanism which comprises a cross beam frame mechanism, the top of the cross beam frame mechanism is fixedly connected with an air storage tank and a pressure gauge, the side wall of the cross beam frame mechanism is fixedly connected with a metal plate protective cover, and the interior of the metal plate protective cover is fixedly connected with a lead screw deviation mechanism. The side wall of the cross beam frame mechanism is fixedly connected with a plurality of pressing buckle feeding mechanisms, the side wall of the cross beam frame mechanism is fixedly connected with a plurality of pressing cover feeding mechanisms, the side wall of the cross beam frame mechanism is fixedly connected with a plurality of press fitting mechanisms, and a pressing buckle feeding square pipe is fixedly connected into each pressing buckle feeding mechanism. According to the automatic press-fitting machine, through cooperative work of key structures such as the cross beam frame mechanism, the pressing buckle feeding mechanism and the pressing cover feeding mechanism, automatic operation is achieved, the production efficiency is greatly improved, flexible adjustment can be conducted according to the requirements of different products, and various press-fitting requirements are met.

A method for preparing a NiAl / Ni3Al gradient structure special-shaped shell part by integrating in-situ reaction and gas pressure forming belongs to the technical field of forming of special-shaped plate shell parts for aerospace. The method aims to solve the problems of long cycle, complex process, high equipment requirement, many hollow defects and high cost of the existing forming method of NiAl-based alloy laminated shell parts, and solve the problem of low high-temperature strength of the existing single-phase NiAl intermetallic compound. The method comprises the following steps: I. stacking Ni foils and Al foils alternately in a forming lower die to obtain a laminated structure; II. closing and sealing a forming upper die and the forming lower die, and filling inert gas through a central air hole of the forming lower die; III. first-stage reaction; IV. gas pressure forming; and V. second-stage reaction. The method is used for preparing a NiAl / Ni3Al gradient structure special-shaped shell part.

The embodiment of the invention provides an instrument equipment information automatic monitoring device and method and a storage medium. The device comprises a monitoring module, an information identification module and an information processing module. The monitoring module is used for detecting whether instrument equipment with information change exists or not, and the information change comprises one or more of equipment addition, equipment scrapping, equipment damage to be repaired, equipment repair and equipment incapable of being repaired; the information identification module is used for identifying whether latest equipment requirement information exists or not through the Internet according to a preset period, and latest equipment requirements are stipulated in the latest equipment requirement information; and the information processing module is used for reminding related personnel of corresponding equipment identification and alarm information and modifying the number of currently available equipment when the information of the equipment is changed and the requirement information of the instrument equipment or the latest equipment with the changed information exists. The technical scheme provided by the invention is used for solving the problem that information barriers exist among departments in the prior art.

The invention discloses a pressurization testing device for a model structure. The pressurization test device comprises a device frame, a downward pressure detection rack and a downward pressing device; the downward pressure detection rack and the downward pressing device are both based on the device frame, and the downward pressure detection rack is located below the downward pressing device; the downward pressure detection rack is used for bearing a test object model structure and detecting downward pressure borne by the test object model structure; and the downward pressing device is used for applying downward pressing force to the test object model structure borne on the downward pressing force detection rack. The pressurization test device is brand new equipment specially designed for detection of the pressure bearing pressure of the model structure, and pressure bearing tests for various model structures can be achieved, so that the equipment requirements of the model structure for bearing races are met.

The utility model discloses a portable physical examination box for entry and exit personnel, which comprises a box body, an inner container structure is arranged in the box body, the inner container structure comprises an accommodating groove arranged on the surface of the inner container structure, two ends of the inner container structure are fixedly provided with limiting blocks, and the end parts of the limiting blocks are fixedly provided with handles. Positioning seats are fixedly arranged on the two side walls of the inner container structure, limiting openings are formed in the inner wall of the box body, positioning rails are fixedly installed on the surface of the inner wall of the box body, a first hidden seat and a second hidden seat are installed in the front of the inner container structure, and a third hidden seat is installed in the rear of the inner container structure. According to the portable physical examination box for the entry and exit personnel, the inner container structures are taken out from the interior of the box body, so that the inner container structures with different structures can be conveniently mounted in the box body, and the layout of the interior of the inner container can be flexibly changed according to different physical examination tasks and equipment requirements.

The invention discloses a P2-type medium-entropy layered oxide positive electrode material and a preparation method and application thereof. A is greater than or equal to 0.05 and less than or equal to 0.1, b is greater than or equal to 0.05 and less than or equal to 0.1, c is greater than or equal to 0.13 and less than or equal to 0.23, d is greater than or equal to 0.63 and less than or equal to 0.66, e is greater than or equal to 0.01 and less than or equal to 0.04, f is greater than or equal to 0.67 and less than or equal to 0.75, a + b + c + d + e = 1, and a + b + c = 0.33. According to the invention, based on a dual-function strategy constructed by entropy regulation and artificial CEI, accurate regulation of the structure is realized; the stability of the surface / interface of the material is synergistically improved by increasing the configuration entropy and forming a NaTaO3 protective layer on the surface through enrichment, and better air stability and all-weather performance are obtained. The preparation method provided by the invention is simple, the raw materials are simple and easy to obtain, the preparation process has low requirements on equipment, the production cost is low, and industrial application is easy.

The utility model discloses an electronic product waterproof test structure which comprises a base, a water storage tank is fixedly installed at the upper end of the base, a controller is fixedly installed in the middle of the front end of the water storage tank, a first fixing frame is fixedly installed on the upper portion of the right end of the water storage tank, and an underwater test device is fixedly installed at the upper end of the first fixing frame. A second fixing frame is fixedly installed on the upper portion of the left end of the water storage tank, a spraying testing device is fixedly installed at the right end of the second fixing frame, and a supporting device is installed on the left portion of the upper end of the water storage tank in a penetrating mode. According to the device, an underwater instrument is placed in the first test box, so that the underwater instrument can go deep into the water storage tank for soaking test, water in the water storage tank is pumped by the water pump through the water pumping pipe and is conveyed into the plurality of nozzles at the lower end of the connecting seat through the water conveying pipe, and the nozzles spray the water on the outer surface of light waterproof equipment at the moment; and a spraying test is carried out, so that the device can carry out a corresponding waterproof test according to equipment requirements.

The utility model discloses an auxiliary supporting device for a power part of a reversed loader, and relates to the technical field of coal mining equipment. Comprising a mounting plate, a pressure detection mechanism is fixedly mounted on the lower surface of the mounting plate, first electric control hydraulic jacks are mounted at the front and rear positions, close to the right side, of the lower surface of the pressure detection mechanism through first hinge pieces, and a bottom plate is mounted between the lower surfaces of the first electric control hydraulic jacks through second hinge pieces; a driving mechanism is arranged between the first electric control hydraulic jacks, the driving mechanism is installed at the position, close to the left side, of the lower surface of the pressure detection mechanism, and angle detection mechanisms are arranged on the first electric control hydraulic jacks; the supporting function of the power part of the reversed loader is increased, the stability of the power part of the reversed loader is improved, the equipment failure rate is reduced, flexible adjustment can be conducted according to different working environments and equipment requirements, pressure generated during equipment operation can be effectively dispersed, the service life of equipment is prolonged, supporting is stable, and the effect is better.

The invention belongs to the technical field of gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding, and particularly relates to gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding equipment which comprises two flexible rails, a laser cladding device and a laser cladding device, and the two flexible rails both surround a tank body in the circumferential direction and are attached to the outer side wall of the tank body; the two circumferential movement modules are in sliding fit with the two flexible rails correspondingly; the lifting motion module is arranged on the circumferential motion module; the tangential movement module is arranged at the action end of the lifting movement module; the radial motion module is arranged at the action end of the tangential motion module; the rotating module is arranged at the action end of the radial movement module; and the working head is arranged on the rotating module. In the working process, rotation of the tank body is not needed, the energy consumption and equipment requirements are low, the size is small, disassembly and assembly are convenient, the device is suitable for multi-size tank bodies, the automation level is high, positioning is accurate, the quality of welding seams or cladding layers is effectively improved, and the working efficiency is remarkably improved.

The invention provides a method for installing an arch rib in a double-limb large-angle inclined arch rib cable-stayed bridge, which comprises the following steps of: firstly, vertically rotating the lower arch rib to a vertical direction, then vertically rotating the upper arch rib to a design inclination angle of the upper arch rib, lifting the upper arch rib, then vertically rotating to a design inclination angle of the lower arch rib, and finally, installing the lower arch rib in the cable-stayed bridge. And then the upper arch rib is lowered to the designed position, finally, the upper arch rib and the lower arch rib are connected into a whole, and arch rib installation is completed. According to the invention, the scheme of one-to-two, low-position vertical rotation, integral lifting, respective inclination fixing, integral lowering and integral connection is adopted, so that the mounting difficulty is greatly reduced, and the mounting risk is greatly reduced; the low-position buckling tower is adopted, the lower arch rib and the upper arch rib vertically rotate at a low position, and the material input is small; according to the method, the requirement on equipment is greatly reduced; the height of the buckling tower is low, the buckling tower is hoisted by a floating crane in a large-section mode, the installation time needed by the buckling tower is shortened, the acceleration amount of the installation speed of the buckling tower determines the advance amount of installation completion of the arch rib, and the installation time of the double-limb large-angle inclined arch rib is greatly shortened.

The invention discloses a rolling composite low-cost anti-oxidation pretreatment method for a heterogeneous bimetal composite pipe, and belongs to the technical field of metal material composite machining. The method comprises the following steps: polishing, cleaning and drying a to-be-compounded surface of the bimetal composite pipe, and removing an oxide layer, oil stains and other impurity attachments on the to-be-compounded surface; the two metal composite pipes are sleeved together according to the structure that the metal with the large thermal expansion coefficient serves as an inner covering layer, and the metal with the small thermal expansion coefficient serves as an outer layer, and a combined pipe blank is formed; and the interference fitting temperature of the metal pipe to be compounded is determined through calculation, the combined pipe blank is placed in a heating furnace to be heated to the interference fitting temperature, heat preservation is conducted for a certain time, and interference fitting of the combined pipe blank is achieved. According to the method, the inner-layer metal pipe and the outer-layer metal pipe are tightly attached through heating, air is exhausted, and the problem that the interface of the combined pipe blank is oxidized is effectively avoided. The method is simple in process, low in equipment requirement, outstanding in cost advantage and suitable for anti-oxidation pretreatment of heterogeneous metal pipe industrial rolling composite production.

The present invention relates to the technical field of fuel injector seats, and discloses a fuel injector seat, a method for efficiently manufacturing the fuel injector seat, and a hydraulic fixture. The fuel injector seat includes a fuel injector seat main body and a fuel injector seat branch integrally formed with the fuel injector seat main body. The fuel injector seat main body is respectively provided with an upper surface, a curved surface, a cylindrical surface, and a lower surface. The fuel injector seat branch is provided with a circular through hole. The lower surface is provided with a first circular counterbore, the curved surface is provided with a second circular counterbore, the cylindrical surface is provided with a keyway, and several circular small holes are provided at the lower end of the cylindrical surface; the dimensional accuracy of the keyway and the connection hole on the fuel injector seat main body is high, which is easy to assemble and has no risk of oil leakage; on a four-axis machine tool, a special hydraulic fixture is used to realize the one-time continuous processing of the dimensions of the keyway and the second circular counterbore on the fuel injector seat main body, improving the production efficiency and reducing the equipment requirements; the number of production stations can be increased to realize the processing of multiple workpieces at one time, further improving the production efficiency.

A vertical shield tunneling system with circumferential multi-head cutting and its construction method are disclosed. This relates to the field of underground engineering. This method excavates only the soil and rock within the annular shaft wall, avoiding full-face excavation, and can temporarily or permanently retain the central soil. The equipment has a compact structure, low installed power, distributed power, and low carbon emissions, reducing energy consumption. It requires less excavation work, is safer and more efficient, reduces mud and slag discharge, and is environmentally friendly. The use of hollow segments reduces the weight of individual segments, lowers the requirements for hoisting equipment, and enhances the active anti-buoyancy resistance during segment sinking. Utilizing cutting edge box assemblies matched to the vertical shield, segments are assembled while excavating in an annular pattern, forming a point-matrix annular excavation, prefabricated box-shaped segment overall advancement, stable box wall support, and retention of central soil excavation mode. This significantly expands the breadth and depth of shaft construction, improves construction efficiency, and reduces construction costs. By changing the shape of the cutting edge box assembly, shaft excavation with circular, rectangular, and other cross-sectional shapes can be achieved.

The application discloses a kind of detection methods of the temperature resistance of filler for organic silicon sealant, belong to material detection technical field;Including determining the initial fineness value of filler sample, record as L0;Filler sample is baked at 150~180 ℃ condition 2~4 hours;Determine the fineness value of filler sample after baking, record as L1;If L1-L0≥5 μm, determine this filler sample after high temperature will have the phenomenon of return coarse, poor temperature resistance;If L1-L0<5 μm, then determine this filler sample temperature resistance is good;The method described in the application is simple, fast detection, low equipment requirement and accurate and reliable result;Solve the existing problems, such as operation complex, detection efficiency low and poor correlation with actual application of temperature resistance detection method of filler for organic silicon sealant.