590 results about "Thin wall" patented technology

The invention discloses a large thin-wall complex component deformation field real-time prediction method based on digital twinning, belongs to the technical field of large thin-wall complex component high-precision machining, and relates to the large thin-wall complex component deformation field real-time prediction method based on digital twinning. The method comprises the following steps: firstly, constructing a large spacecraft cabin digital twin system, then constructing a deformation prediction model based on a multi-dimensional data interpolation algorithm, obtaining workpiece key point deformation through a displacement sensor, giving a deformation correction model based on measured data weighted compensation on the basis of data acquisition, and finally obtaining a deformation prediction model based on measured data weighted compensation. And a large number of high-precision prediction data samples are reduced and then are further corrected to improve the prediction precision and efficiency. According to the invention, a data visualization mode is adopted, the deformation of the component at each rotation angle and temperature is dynamically displayed, and the deformation condition of the to-be-processed surface of the large cabin component can be grasped in advance. And a deformation correction model based on measured data weighted compensation is given, so that the production cost of enterprises is reduced, and the machining precision and efficiency are improved.

The invention belongs to the technical field of solid-liquid phase change heat dissipation, and discloses a memory alloy-based phase change expansion buffer structure, which comprises an elastic structure, a supporting structure, a thin wall, a cavity, a flaring, an electronic device, a heat sink, fins, a connecting structure and a phase change material, the thin wall is made of shape memory alloy and separates the internal cavity and the external phase-change material, the internal cavity is communicated with the external environment through the flaring, and in the flying process of the aerospace vehicle, external airflow flows into the flaring to take away heat stored by the phase-change material continuously. Based on the shape memory function of the memory alloy, additional space expansion buffering can be provided for the phase change material when the temperature changes, and stress damage caused by phase change expansion is avoided. The memory alloy thin wall and the elastic supporting structure are combined, the structure is simple, no moving part exists, circulating work in the high-temperature environment and the low-temperature environment can be achieved, local hot spots caused by internal gap movement of the phase change material in the circulating phase change process are reduced, and heat transfer deterioration is avoided.

A putter-type golf club head comprises a unitary construction metallic frame having a thin wall crown region, and a crown damping member attached to thin wall crown region. The unitary construction metallic frame has a frame mass of 250-370 grams, a frame density of at least 2.5 g / cc, a frame length of 40-130 mm, a frame width of 75-130 mm, a frame height of 17-30 mm, a frame front forming a portion of a striking face, a frame rear, a frame top, and a frame bottom, wherein the frame top includes a thin wall crown region having a TWCR thickness of 0.6-1.2 mm, a TWCR length, a TWCR width, and a TWCR area of at least 600 mm2.

The invention provides a topology and morphology integrated optimization design method for a thin-walled structure. The method comprises the steps that 1, a finite element model is established according to design requirements; 2, extracting a thin-wall structure morphology distribution field # imgabs0 # through two-step partial differential equation filtering and Heavide projection operation; 3, constructing a material attribute rational approximation model in combination with the thin-wall morphology distribution field # imgabs1 # and the topological density field v obtained in the step 2, thereby obtaining an elastic modulus E and mass rho in a design domain; 4, performing finite element analysis in combination with the material interpolation model, and calculating the flexibility of the structure; 5, solving to obtain the sensitivity of the structure flexibility and the quality relative to the design variables; step 6, updating the morphology design variable mu and the topology design variable v of the thin plate by adopting a moving asymptote method; and step 7, when a convergence condition is satisfied, stopping optimization iteration and outputting an optimization result. According to the method, the maximum forming angle of the thin-wall structure is controlled by adjusting the filtering radius of the anisotropic filter, and the stamping forming process is met.

The invention discloses a dynamic fatigue testing machine for a metal material and a testing method, aiming at a thin-wall round tube with a hole, the method comprises the following steps: projecting a speckle pattern in a hole area of a sample by adopting an infrared light source, and respectively collecting sample images containing the speckle pattern and without the speckle pattern through a binocular DIC system; continuously recording load-displacement data and an image sequence containing or not containing speckles in the test process; on the basis of difference analysis between the image sequence containing the speckles and the image sequence not containing the speckles, interference areas caused by the speckles are recognized and eliminated; and carrying out DIC strain calculation based on the corrected image sequence containing the speckles. According to the invention, invisible infrared light of a conventional lens is used as a speckle light source to obtain an image sequence containing speckles, an image sequence without speckles is acquired through imaging of a reflector and is used as a net field to correct a speckle field, the interference phenomenon is eliminated, accurate monitoring of the DIC strain at the notch is realized, and the accuracy of the DIC strain at the notch is improved. The accurate analysis on the fatigue characteristic of the thin-wall round pipe with the hole is improved.

The invention relates to an additive repairing method for a special-shaped curved surface of a large-size thin-wall component, belongs to the technical field of metal additive manufacturing, and solves the problems of low profile precision, poor aerodynamic layout and difficulty in meeting high-speed flight due to local deformation of the special-shaped curved surface of the large-size thin-wall SLM component. The invention discloses a large-size ultrathin component special-shaped curved surface additive repairing method. The method comprises the following steps that S1, a component profile is scanned and compared with a standard model; s2, polishing the surface of a product repair area; s3, repairing path planning; s4, preparing equipment and raw materials; s5, component laser additive repairing is conducted; s6, detecting a cladding layer; s7, heat treatment of the component; and S8, product detection. And on-demand repair and high-precision shape control of the SLM component in the complex geometrical shape are achieved. Local concave low-stress repair of the large-size thin-wall component is achieved, the method is suitable for large-scale engineering repair manufacturing of the component, and the problem of secondary deformation generated in the repair process of surfacing, traditional laser cladding and other technological methods is effectively solved.

A moving part of the short flexible cylinder active complex parallel radial harmonic transmission is composed of a thin-wall composite short flexible cylinder and two rolling wave generators with roller pins or ball-retainer assemblies. A flexible bearing low-speed moving ring raceway is integrated on one side of the gear, and a full-cylinder-length gear is arranged on the other side of the gear; the two semi-short shafts are fixedly connected to the two ends of a motor rotor respectively, are integrated with flexible bearing high-speed moving ring raceways and are the same in structure size, and a semi-short shaft at one end needs to be coplanar with a semi-long shaft at the other end, so that the two ends of the semi-short shafts generate time-varying radial antisymmetric deformation; the static part is composed of end covers which are fixedly connected to the two ends of the motor stator and provided with rigid gears. A double-convex-arc raceway of a high-speed moving ring of the flexible needle bearing is designed, a convexity needle roller with the middle concave structure dynamically constraining the axial movement amount of a short flexible cylinder and a retainer and various structures facilitating rolling body assembly are used, and a waveform raceway calculation formula of a wave generator for the needle roller is given; therefore, the radial size and the axial size of the active complex radial harmonic transmission can be reduced on the basis of ensuring the transmission precision and the bearing capacity.

The invention discloses a thin-wall surface deformation measurement method and device based on a Kriging model, and a medium. The method comprises the following steps: S1, generating an initial measurement point; s2, a Kriging model is constructed; s3, dynamically selecting a sampling mode; s4, acquiring a sampling point to be detected; s5, the deformation degree of the thin-wall surface is obtained through actual measurement; and S6, evaluating and iterating. Through prediction and selection of iterative sampling points and in combination with a dynamic adjustment sampling strategy, the number of measurement points is effectively reduced, and the method can overcome the problem of measurement errors caused by coordinate deviation in AACMM handheld measurement. Even if deviation exists between the position of an actual measurement point and the position of a theoretical sampling point, the method still can accurately capture the deformation degree of the thin-wall surface through prediction and iterative optimization of the Kriging model, the reliability of a measurement result is ensured, and the measurement precision, the measurement efficiency, the stability of the method implementation and the applicability and robustness of different workpiece applications are improved.

The invention provides a cavity thin-wall part printing method and system, a storage medium and equipment, and the method comprises the step of adopting a cavity part regional printing processing method with different forming parameters. A thin-wall cavity part of a part is independently split into an integral part through three-dimensional modeling software, a main body structure part and a thin-wall cavity structure part are split into a plurality of parts, and different filling printing parameters are adopted for machining the parts of different structure parts. By means of the printing method, heat accumulation can be effectively shared, distribution of residual stress is reduced, finally, the size structure precision of the thin-wall part is effectively guaranteed, and the printing success rate of the complex cavity part is increased.

The invention provides a semi-aromatic polyamide material easy to process and form and a preparation method thereof. Comprising the following components in parts by weight: 40-78 parts of PA MXD6, 4-15 parts of long carbon chain nylon, 0.3-3 parts of polyethyleneimine, 20-60 parts of a reinforcing material, 0.2-5 parts of other auxiliaries and 0-50 parts of a filling material. The long carbon chain nylon with a specific length and the polyethyleneimine with a specific molecular weight are fully utilized to be matched, so that more shear sensitivity characteristics are obtained, and the problems of poor flowability of the aromatic ring nylon PA MXD6 material, lack of glue in thin-wall multi-cavity processing, tape casting, scorching, appearance fiber floating and the like are solved.

The invention discloses a clamping and supporting tool for thin-wall parts, and relates to the field of clamping and supporting tools, the clamping and supporting tool comprises a box body part, a square inner groove is formed in the middle of one end of the box body part, a first clamping tool is arranged in the square inner groove, and the first clamping tool is of a frame type structure and is matched with the square inner groove in the box body part; a plurality of first inner grooves which are symmetrically distributed are formed in the peripheral wall of the first clamping tool, the first inner grooves are blind grooves, and clamping springs are fixedly installed at the bottoms of the first inner grooves; by means of the combined structure of a frame type / rod-shaped clamp, an elastic support and a process plate, traditional rigid clamping is replaced, clamping force can be evenly dispersed, plastic deformation during thin-wall part machining is effectively avoided, the size precision, shape tolerance and surface smoothness of parts are guaranteed, and the rejection rate of the parts is reduced; and meanwhile, damage to the inner wall caused by excessive supporting is prevented through the process plate (or the follow-up process plate), and the qualification rate of parts is further increased.

The invention discloses an integrated design method for a woven composite variable-curvature reinforced thin-wall structure, and the method comprises the steps: achieving the parametric modeling of a design model of the woven composite variable-curvature reinforced thin-wall structure through a Python language; the method comprises the following steps of: modeling a woven composite material variable curvature reinforced thin-wall structure design model for each sample point sampled in a design space of design variables, performing instability mechanical response solution by utilizing finite element software explicit dynamics, and then selecting a design variable optimal solution based on a deep neural network model in combination with a multi-objective optimization algorithm; and according to the optimal solution of the design variable, the variable-curvature reinforced thin-wall structure of the woven composite material is constructed. According to the method, integrated structural design is conducted on the woven composite material and the variable-curvature reinforced thin-wall structure, the design space of the woven composite material variable-curvature reinforced thin-wall structure is rich, the bearing efficiency of the woven composite material variable-curvature reinforced thin-wall structure is improved, and the further lightweight design requirement of the related engineering field is met.

The invention discloses a stamping forming female die for a steel rectangular thin-wall shell part. The working face of the stamping forming female die is arranged to be of a right-angle fillet structure with segment difference. The right-angle rounding structure with the segment difference comprises a segment difference face and a female die working face which are sequentially connected in the downward pressing direction of the male die. The upper corner of the segment difference surface is set as a circular bead R1, and the lower corner of the segment difference surface is set as a circular bead R2; the upper corner of the working surface of the female die is a variable-diameter fillet R3, and the lower corner of the working surface of the female die is a fillet R4; the two long edges of the working face of the stamping forming female die are arranged in a sectional mode, and the variable-diameter fillets R3 on the sections are different in radius. The problems that in the stamping forming process of the rectangular thin-wall shell, the bottom and the opening are unstable and wrinkled, the bottom cracks, demolding is not smooth and the like are effectively solved.

The invention relates to a method by which a starting material for injection molding having a viscosity of between 0.50 and 0.7 dL / g is produced from a recycled post-consumer PET having a viscosity of between 0.72 and 0.86 dL / g according to ASTM D4603 and a copolymer fraction of at most approximately 3%, adding a low-viscosity PET material. In the method, the comminuted and dried PET material is melted and decontaminated to such a degree that it is suitable for applications in the food sector and the consumer goods sector.

The invention relates to the technical field of laser cutting, and discloses a laser cutting sectioning device for blanking of a large-diameter thin-wall low-thermal-expansion alloy pipe, which comprises a worktable, a vertical plate is arranged at the top of the worktable, an alloy pipe body is arranged on the vertical plate, a telescopic cylinder is further arranged on the vertical plate, and a laser cutting head is arranged at the output end of the telescopic cylinder. A U-shaped frame is further arranged at the top of the workbench. The device further comprises a material receiving unit arranged on the workbench. The material receiving unit comprises a material receiving component, a discharging component and a locking component which are arranged on the workbench. According to the laser cutting sectioning device for blanking of the large-diameter thin-wall low-thermal-expansion alloy pipe, cutting dregs can be accurately received through the receiving hopper and the receiving box of the receiving assembly, and the dregs are shaken off through vibration during unloading, so that the damage to the smoothness of the inner wall is avoided. The fluid resistance and the corrosion risk are reduced, the follow-up cleaning difficulty is reduced, the service life of the pipeline is prolonged, and the medium circulation stability in the high-end fields such as aerospace and the like is ensured.

The embodiment of the utility model discloses a large-scale thin-wall plate bending tool which comprises a bending column, a working table, a clamping device, a clamping device and a clamping device, the bending column is arranged in the center of the working table, and the size of the outer circle of the bending column is the same as that of the inner circle of a formed workpiece; and the pressing pieces are arranged on the bent column and used for pressing different parts of the workpiece to be machined. By means of the bent column with the boundary dimension the same as the inner arc size of the workpiece and the pressing piece arranged on the bent column, the workpiece to be machined is stably positioned on the bent column, follow-up hole machining is facilitated, the machining problem of a large irregular bent cover plate is solved, machining efficiency is improved, and potential quality hazards caused by unstable clamping are eliminated.

Fastening support devices and systems for hanging half round gutter include engagement portions for internal engagement with the front and rear of a gutter. A rear face of the device may be configured to provide support to a curved rear gutter wall, such as the rear wall of a half round gutter. The rear face may include a substantially vertical upper portion adjacent a curved lower portion. A support body of the device may include a substantially planar lower surface, two or more internal supports projecting upwardly from the lower surface, and one or more thin walls interconnecting the internal supports and the lower surface. These features provide structural rigidity to the device and support the gutter to resist bending under heavy loads. Additional features of the device provide ease of installation and improved aesthetics of the overall gutter system.

The invention provides a high-strength winding thin-wall SiC composite cladding tube and a preparation method thereof. A preparation method of a high-strength winding thin-wall SiC composite cladding tube comprises the steps that silicon carbide fibers are wound and laid around a core mold, the winding pre-tightening force is smaller than or equal to 10 N. The winding mode comprises the first mode that one layer of annular winding is conducted firstly, then one layer of spiral winding is conducted, and the number of fiber intersection points in the whole annular direction at a certain position of the outer surface of the core mold is 1. One-layer annular winding is carried out firstly, then two-layer spiral winding is carried out, the number of fiber intersection points in the whole annular direction at a certain position of the outer surface of the core mold is 3, and a prefabricated body is obtained; carrying out a densification deposition process on the preform, wherein the densification deposition process comprises PyC pyrolytic carbon interface deposition, CVI chemical vapor infiltration and CVD chemical vapor deposition; and precise inner circle and outer circle machining is conducted, and the SiC composite cladding pipe is obtained. According to the preparation method disclosed by the invention, through a specific dry winding mode and a densification deposition process, the SiC composite material tube blank is higher in density and better in mechanical property.

The invention discloses a cast iron material suitable for a large-size thin-wall high-strength wind power hub and a preparation method and application of the cast iron material, and belongs to the technical field of materials and casting technologys.By optimizing alloy component design and combining the synergistic effect of trace rare metal elements of barium (Ba), antimony (Sb) and bismuth (Bi) and rare earth elements (RE), the high-strength wind power hub is obtained; and by adding a three-phase SiC / SiO2 / TiC nano-particle reinforced phase, pearlite formation is inhibited, graphite nodules are refined, the spheroidization rate is larger than or equal to 95%, and the ferrite content is larger than or equal to 90%. And by adding a nano-particle reinforced phase and controlling the proportion of alloy elements such as Ni < = 0.8%, the corrosion resistance of the material is further improved. The ductile cast iron material with high spheroidization rate, excellent mechanical property, low-temperature impact resistance and corrosion resistance is prepared by using the low-temperature-resistant and high-strength casting process and the intelligent temperature-controlled and cold-controlled casting process, and the requirements of light weight, high strength, corrosion resistance and high reliability of 18MW-grade offshore wind power hubs are met.

The invention provides a test device for simulating volcanic ash erosion sample materials at normal temperature. The test device comprises a gas supply system, a dust supply system, a gas-solid mixing system and an erosion test system, the gas supply system comprises an air compressor, a high-pressure gas storage tank and an air dryer which are connected in sequence, and an outlet of the air dryer is connected with the gas-solid mixing system; the dust supply system comprises a solid particle storage tank, the upper end of the solid particle storage tank is provided with a feed port, and a lower end outlet is connected with the gas-solid mixing system; the washout test system comprises a test chamber, a fixed disc which is arranged at an inlet of the test chamber and is communicated with the gas-solid mixing system, a nozzle on the fixed disc, and a sample disc which is positioned in the test chamber and is opposite to the fixed disc, and the nozzle is used for uniformly spraying solid particles onto a sample material on the sample disc. The test device can accurately simulate the erosive wear condition of the air compressor blade by the volcanic ash with different concentrations and speeds at normal temperature, and can also simulate the erosive damage condition of the air compressor blade and a thin-wall piece sample by the volcanic ash at a high rotating speed.

The invention relates to a flame-retardant PC resin composition meeting a thin-wall S.2 needle flame standard as well as a preparation method and application thereof. The flame-retardant PC resin composition comprises the following components in parts by weight: 92-98 parts of PC resin, 0.1-1 part of a sulfonate flame retardant, 0.1-1 part of a toughening agent, 1-3 parts of phosphate, 0.5-2 parts of a boron-containing compound, 0.5-2 parts of fumed silica and 0.5-1 part of an auxiliary agent. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixer, conveying, shearing and mixing by a double-screw extruder through screws, and melting, homogenizing, drawing, cooling and pelletizing the materials to obtain the flame-retardant PC resin composition meeting the thin-wall S.2 needle flame standard. Compared with the prior art, the composite material not only has stable flame retardant property, meets the thin-wall S.2 needle flame standard, but also has relatively excellent mechanical property and thermal stability, is relatively low in cost, and is very suitable for being applied to the fields of power adapters, OAs, new energy batteries, electronics and electrics, electric control boxes, switches and the like.

The utility model relates to a welding structure at the joint of a thin-wall part and a thick-wall plate, which comprises the thin-wall part and the thick-wall plate, and is structurally characterized in that the thin-wall part is provided with a multi-layer fitting structure, and the weldability, the joint strength, the fatigue life and the corrosion resistance of the thin-wall part are improved through the multi-layer fitting structure. The utility model provides a plurality of implementation schemes provided with a plurality of layers of fitting structures, which are applied to the manufacturing of the stainless steel corrugated compensator, can greatly improve the weldability of the welding of the thin-wall corrugated pipe and the thick-wall end cover plate, prolong the fatigue life of the corrugated pipe at the welding part and improve the corrosion resistance of the joint, and is easy to realize automatic welding. The scheme is low in overall cost, high in efficiency, simple in process and good in reliability, the current ultrathin plate welding problem can be solved, huge economic benefits are generated, the product quality is greatly improved, and the product service life is greatly prolonged.

The invention discloses a thin-wall shell plastic part injection molding process parameter multi-objective optimization method, which is based on an RIME-RF-MOGWO framework, takes a simulation sample as a research object, selects a volume shrinkage rate and a buckling deformation amount as optimization objectives, and firstly adopts SMOTE to process a data imbalance problem; establishing a nonlinear mapping relation between the process parameters and the quality target by using RF; an RIME is introduced to optimize the hyper-parameter of the RF; multi-objective optimization of process parameters is realized in combination with MOGWO, and a Pareto frontier solution set is obtained through non-dominated sorting and a congestion degree control mechanism. A multi-round optimization and simulation verification result shows that the multi-objective optimization method for the injection molding process parameters of the thin-wall shell plastic part can effectively obtain an optimal process parameter combination, the volume shrinkage rate is reduced by 19.02%, the buckling deformation amount is reduced by 50.63%, and the molding quality of the thin-wall plastic part can be remarkably improved.

The invention belongs to the technical field of ABS (Acrylonitrile Butadiene Styrene) molding, and discloses an ABS ultrathin wall injection molding process which comprises the following steps: S1, material modification; s2, configuring equipment and a mold; s3, injection molding is executed; s4, demolding and process control; s5, post-processing and detecting; the material modification comprises the steps of preparing a high-flowability ABS base material and carrying out drying pretreatment. According to the method, ordered arrangement of molecular chains is kept in the high-speed filling process, weld line weakening and internal stress concentration are effectively restrained, and the surface thickness uniformity of the ultrathin wall meets the optical-grade requirement. Dynamic pressure closed-loop control is combined with a vacuum auxiliary exhaust mechanism, real-time matching of the melt front temperature and the cavity pressure is achieved, the defect of short injection or surface flow marks caused by air trapping in a traditional process is eliminated, and the distribution error of a mold thermal field is reduced to the micron order through cooperation of partition mold temperature control and a quick response heating element; the dimensional stability and assembly precision of the complex thin-wall structure are guaranteed, and meanwhile energy consumption of the cooling period is reduced.

The invention discloses a copper-stainless steel bimetal thin-wall part and a preparation method thereof, and belongs to the technical field of metal material processing. The preparation method comprises the following steps that a copper material and a steel material are prepared into a composite blank; performing first destressing heat treatment on the composite blank to obtain a bimetal cylindrical blank; the bimetal cylindrical blank is subjected to repeated spinning, and a bimetal spinning prefabricated part is manufactured; and after second destressing heat treatment is conducted on the bimetal spinning prefabricated part, machining is conducted till the dimensional tolerance of the copper-stainless steel bimetal thin-wall part is achieved. By means of the method, the metal advantages of the copper material and the steel material can be combined, low-cost manufacturing of the high-performance composite part is achieved, and therefore a traditional metal composite scheme of welding or bolt connection is replaced.

The invention relates to the technical field of pipe preparation, and particularly provides a small-caliber high-precision thin-wall GH738 pipe preparation method which comprises the following steps: step 1, obtaining a GH738 bar blank; secondly, the bar is machined into a GH738 pipe blank; 3, a semi-finished product GH738 pipe is obtained; 4, after the semi-finished GH738 pipe is cleaned, a finished product vacuum heat treatment procedure is conducted, and the structure and performance of the pipe are adjusted; step 5, rounding and straightening pretreatment; and 6, the small-size high-precision thin-wall GH738 pipe is obtained. The outer diameter is 5-8 mm, the outer diameter tolerance is-0.01--0.03 mm, the wall thickness is 0.5-1.0 mm, the wall thickness tolerance is + / -0.05 mm, and the straightness is smaller than 0.3 mm / m. The method has the advantages that the prepared small-size high-precision thin-wall GH738 pipe is higher in size precision, better in straightness, lower in surface residual stress and higher in eddy current flaw detection qualification rate, and the pipe yield is remarkably increased. And the preparation process is simple, has strong repeatability, is suitable for industrial large-scale production, and has wide popularization value and remarkable economic benefits.

The invention discloses a halogen-free flame-retardant polyphenyl ether composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The composite material is prepared from the following components in parts by weight: 40-70 parts of polyphenyl ether resin, 10-30 parts of high impact polystyrene resin, 4-8 parts of SEBS (Styrene-Ethylene-Butylene-Styrene) resin, 5-10 parts of organic and inorganic composite flame retardant, 3-8 parts of phosphate flame retardant, 1-5 parts of polyborosiloxane and auxiliaries. The core of the organic-inorganic composite flame retardant is that the organic-inorganic composite flame retardant is a core-shell structure particle which takes magnesium-aluminum hydrotalcite and nano silicon dioxide as a core and melamine cyanurate as a shell according to a specific proportion. Through the synergistic effect of all the components, especially the core-shell structure, the dispersity and interfacial compatibility are effectively improved, so that the material achieves excellent flame retardance while maintaining high impact strength and heat resistance, and the UL-94 V-0 grade can still be met even under the condition of a 0.8 mm thin wall. The material is particularly suitable for preparing thin-wall electronic and electrical appliance shells and new energy automobile parts with harsh performance requirements.

The invention provides a reducing tool structure for a thin-wall capillary tube, the whole reducing tool structure is composed of eight same conical modules, and the conical modules are formed by processing blocky materials; according to the structure and the size of a working space of reducing equipment, the conical module is machined into a fan-shaped structure with an angle of 45 degrees, the diameter of an outer arc of the fan-shaped structure is 83 mm, and the diameter of an inner arc of the fan-shaped structure is 5 mm; a turnup with the height of 6.5 mm is machined at the upper end of the outer arc, the diameter of the outer contour of the turnup is 93 mm, the overall height of the conical module is machined to be 49.5 mm according to the matched limiting requirement of reducing equipment, and the turnup at the upper end of the conical module is used for axial limiting in the installation process. An M8 threaded hole is machined in the center of the fan-shaped outer arc, the depth of the hole is 10 mm, and therefore all modules of the reducing tool structure can be conveniently installed and fixed to equipment through screws. And the eight same conical modules are fixed on the inner wall of the working space of the reducing equipment through eight standard screws after being arrayed circumferentially. The tool structure has the characteristics of high stability, convenience in operation, difficulty in deformation and fracture of the capillary tube and the like.

The invention provides a thin-wall ultra-large-length-diameter-ratio carbon fiber tubular beam forming die and technology in the field of carbon fiber composite material tubular beam forming, the thin-wall ultra-large-length-diameter-ratio carbon fiber tubular beam forming die comprises an upper die, a lower die and core dies, the core dies are located in the upper die and the lower die, the core dies are connected with the two ends of the upper die and the two ends of the lower die respectively, and the upper die and the lower die are connected through bolts; the upper mold and the lower mold provide mold locking force through bolts, adjusting bolts are arranged at the bottom of the lower mold, the height of the lower mold is adjusted through the adjusting bolts, and exhaust holes are formed in the upper mold and the lower mold. The manufacturing of the thin-wall ultra-large-length-diameter-ratio carbon fiber tubular beam is realized by utilizing a combined die technology and an expansion bag forming process, and the defects that the whole die is difficult to process, the precision is difficult to guarantee and the whole die is easy to deform in the processing process are overcome; and an electric blanket is adopted to heat the mold, so that low-energy-consumption, low-cost and high-efficiency manufacturing is realized.

The invention discloses a processing method of a large low-temperature steel thin-wall end socket, which comprises the following steps: material selection, laser cutting, assembly welding, polishing and primary annealing, laser cutting is carried out on sections, the sections are cut into I-shaped grooves, and the notches of the I-shaped grooves are thin, narrow and vertical, so that the deformation of each section is small, and the thickness of each section is small; the cutting efficiency is extremely high; meanwhile, the sections are welded in a mode of combining PAW welding and GTAW welding, so that the effect of single-face welding and double-face forming can be achieved, the welding efficiency is high, the welding heat influence is small, welding deformation is small, and welding defects are few; as the wafer is subjected to annealing heat treatment, the hardness of the surface of the wafer can be reduced, the residual stress of a welding seam can be reduced, welding seam grains can be refined, the structure can be adjusted, defects in the structure can be eliminated, the structure components of the welding seam on the wafer can be homogenized, the material performance of the wafer can be improved, and a powerful guarantee is provided for subsequent end socket forming.