45results about How to "Improve forming efficiency" patented technology

The invention relates to multifunctional self-adaptive laser metal 3D printing equipment and a control method thereof.The device comprises a spray head bottom plate and a laser cladding spray head, the laser cladding spray head comprises a spray nozzle used for outputting powder and a pipeline connected to the spray nozzle and used for conveying the powder, and a first converging assembly is installed on the spray head bottom plate; the end, away from the nozzle, of the pipeline is arranged on the inner side of the first gathering assembly, the powder is magnetized when passing through the first gathering assembly in the pipeline, and a gathering processing assembly used for repelling the magnetic powder is arranged on the outer side of the nozzle. Through the design of the first gathering assembly and the gathering processing assembly, powder is magnetized through the first gathering assembly during conveying, then the magnetized powder and the gathering processing assembly generate like-pole repulsion acting force when the powder is sprayed out of the nozzle, the powder is promoted to be gathered together to form a powder beam, powder divergence and irregular arrangement are reduced, and the powder quality is improved. And the position precision and the forming quality and precision of powder conveyed to the molten pool are improved.

The invention belongs to the field of rotary body component forming, and particularly relates to a close-up spinning device and forming method.The close-up spinning device comprises a rotating table, a clamping assembly fixedly arranged on the rotating table and at least one spinning assembly, and the spinning assemblies can control the thickness and surface quality of a cylindrical workpiece; the thickness of a product is convenient to control, the thickness of the product can more easily meet the design requirement, and a thin-wall rotary body component with the uniform thickness and a thin-wall rotary body component with the gradually-changed thickness can be produced; according to the forming method, the cylindrical workpiece with the radius-thickness ratio larger than 200: 1 can be subjected to closing-in spinning, the closing-in spinning process is divided into three stages, different closing-in track routes and differentiated machining technologies need to be selected in different closing-in stages, the shape precision and surface quality of closing-in spinning are guaranteed, and the machining efficiency is improved. The box bottom forming efficiency can be effectively improved through integral spinning forming.

The invention provides a U-shaped von Karman variable curvature curve profile frame roll bending forming process. The U-shaped von Karman variable curvature curve profile frame roll bending forming process comprises the following steps that S1, hard material roll bending forming is adopted for raw materials of a U-shaped frame; s2, the blanking size of the U-shaped frame is limited; s3, performing segmentation processing on the U-shaped frame curve by adopting a radius fitting method; s4, roll bending is conducted on the U-shaped frame, and the arc length compensation of each section is prolonged; and S5, different reduction values are added to the radius of each section of each pass of roll bending of the U-shaped frame, and the von Karman curve U-shaped frame is obtained. The von Karman curve variable curvature U-shaped frame has the beneficial effects that a hard material roll bending forming process is adopted to replace a stretch bending forming process, the part forming precision can be improved, the production efficiency is improved, the quenching procedure in the stretch bending forming process is omitted, and the production cost is reduced.

According to the low-friction rotary necking forming method, a clamping mechanism, a necking die and the like are included, the clamping mechanism comprises a square limiting block, a rotary disc, a screw rod, a driven gear, a driving gear, an outer clamp, an inner clamp, a base and a rotary rod, a cavity is formed in the necking die, and a die inlet is formed in the cavity and used for allowing a pipe blank to be axially placed into the cavity; the diameter of the cavity is gradually reduced from the die inlet to the inside, a plurality of rollers are distributed on the inner wall of the cavity and are in rolling friction fit with the outer surface of the pipe blank, the pipe blank rotates under clamping of the clamping mechanism, the necking die moves downwards, and when the upper end of the pipe blank makes contact with the first circle of roller of the necking die, the rollers are driven by the pipe blank to rotate in a driven mode; and the rollers synchronously extrude the pipe blank to start reducing deformation, along with descending of the necking die, the contact area of the pipe blank and the rollers is gradually increased, more rollers rotate in a driven mode, and the deformation amount of the material is larger and larger till necking is completed. According to the method, the risk of buckling instability of a force transfer area of the pipe blank in the forming process can be reduced, the forming difficulty is reduced, and the forming efficiency is improved.

The invention belongs to the technical field of additive manufacturing, and relates to a laser additive manufacturing method for a low-stress, low-defect and low-deformation titanium alloy thin-wall part. According to the method, key process parameters such as the laser power, the scanning speed, the interlayer deflection angle and the island size are optimized, post-heat treatment is conducted, the residual stress in the titanium alloy manufacturing process is remarkably reduced, the defects such as pores and cracks are reduced, deformation of formed parts is effectively controlled, and therefore the forming quality of TA15 and other titanium alloy parts is improved. The method has the advantages of being high in forming efficiency, wide in application range and the like, and can be widely applied to high-end equipment manufacturing in the fields of aerospace, energy and the like.

The present invention provides a progressive die for forming a multi-sub-sheet of an integral corrugated sheet, comprising an upper die assembly and a lower die assembly, wherein the upper die assembly comprises an upper die base, a discharge plate and a punch fixing plate fixedly connected to the lower end surface of the upper die base, and the lower die assembly comprises a lower die base, a die pad and a die fixing plate fixedly connected to the top of the die pad; a plurality of workstations are correspondingly arranged between the punch fixing plate and the die fixing plate, which are respectively from left to right in processing order: a first punching station, a first blanking station, a second blanking station, a first forming station, a second forming station, a second punching station and a third blanking station, thereby streamlining the mold and reducing the processing cost, and achieving the goal of large-scale continuous stamping of integral corrugated sheets with a single set of molds.

The application belongs to the technical field of additive manufacturing equipment, and relates to a non-contact powder spreading device for additive manufacturing, which comprises a powder storage groove, a powder controller and a control panel; the powder controller is arranged at the bottom of the powder storage groove; and the control panel is connected with the powder controller and drives the powder controller to open or close. The application can avoid the problems of knife sticking and powder sticking, and can also avoid the problems of deformation and damage of the formed part caused by scraping. The application can effectively improve the forming quality of the powder spreading type additive manufacturing equipment and is also beneficial to the realization of the non-support forming technology.

The application discloses a forming method for concave thin plate corrugated stainless steel parts, which comprises die assembling, stamping buffer layer laying, stamping preforming, stamping forming and shearing correction. By using the forming method, the existing punch is used, in the stamping preforming process, the stamping buffer layer is laid, the step-by-step pressing mode is adopted, the stamping buffer layer can control the material flow problem, so that the material uniformity is achieved; in the stamping forming, the die is replaced, and the one-time pressing forming is adopted, which can effectively solve the technical problem that the boundary of the corrugated area is prone to wrinkling, and can improve the forming efficiency, so as to improve the qualified rate of part forming, ensure the product forming quality, greatly reduce the processing cost, and be applied to the processing of the parts prone to wrinkling, and is convenient to operate and suitable for popularization and application.

The invention relates to traditional Chinese medicine splint bending forming equipment based on distal radius fracture and a working method.The traditional Chinese medicine splint bending forming equipment comprises a bending forming tool and a temperature control system, the bending forming tool comprises a bottom plate for containing a wood plate for forming, a fixing assembly is arranged on the bottom plate, and a working assembly is arranged on the right side of the fixing assembly; the working assembly comprises a plurality of pairs of forming moving pieces distributed in the length direction of the wood board for forming at intervals, each pair of forming moving pieces is used for moving to make contact with the front side face and the rear side face of the wood board for forming correspondingly, and a heating assembly is arranged on the pair of forming moving pieces corresponding to the position, needing to be bent, of the wood board for forming. And the heating assembly is connected with the temperature control system. According to the principle that multi-point forming is achieved through the multiple pairs of forming moving pieces, a temperature control system is additionally arranged, the forming precision and forming efficiency of the traditional Chinese medicine wood clamping plate are improved, clamping plates with different bending radiuses can be achieved through multi-point forming, the device is different from fixed-parameter clamping plates sold in the market, and the individual requirements of different patients can be met.

According to the continuous bulging machining method for the titanium alloy cylindrical part at the high temperature, hot pressing forming equipment with a moving-out workbench is used as a pressing force application device, a moving-out platform is adopted, a mold is convenient to place, parts are convenient to take and place, and the maximum opening height needed by the equipment during part taking is reduced; and meanwhile, a forced return and return in-place detection device is designed for return of the equipment ejector rod and is used for preventing fatal damage to the mold due to the fact that the equipment ejector rod does not return to the lower limit. Compared with the prior art, the continuous bulging machining method for the titanium alloy cylindrical part at the high temperature has the beneficial effects that the machining circulation of large titanium alloy cylinder feeding, mold returning to a hot press, heat preservation, pressing bulging, workpiece demolding, mold and workpiece moving-out and automatic discharging can be achieved. The forming efficiency of the large titanium alloy cylindrical part is improved, the machining cost is reduced, meanwhile, the labor intensity of an operator is reduced, and working conditions are improved.

The present invention belongs to the technical field of motor shell preparation, and discloses a method for preparing a motor shell by using an extrusion thickening and deep drawing process, so that the aluminum alloy motor shell will not be broken during the forming process, and the production efficiency and qualified rate of the aluminum alloy motor shell are improved. The method includes: step 10, through experimental measurement and simulation analysis methods, the aluminum alloy plate drawing coefficient for setting each process is obtained; step 20, according to the aluminum alloy plate drawing coefficient, the aluminum alloy plate is deep drawn to obtain a first motor shell; the height of the first motor shell is H; the first motor shell includes an upper motor shell and a lower motor shell; the upper motor shell is located above the lower motor shell, and the upper motor shell has a convex arc surface; step 30, using an extrusion process to reduce the diameter of the upper motor shell until the motor shell is obtained; during the extrusion process, the height of the upper motor shell and the height of the lower motor shell remain unchanged.

The efficient forming control system comprises the steps that a digital model is divided into a hole cavity area and a non-dense hole cavity area, the obtained digital model is adjusted to a target posture according to forming requirements, and corresponding initial blank forming is conducted on the hole cavity area according to a conventional adhesive spraying forming path; and for a non-dense hole cavity area, a corresponding initial blank is rapidly formed according to the path of spraying the adhesive to form the boundary contour and filling the inner side space of the boundary contour with the adhesive. By the adoption of the scheme, the workpiece forming efficiency can be remarkably improved, the forming precision and quality of the initial blank can be ensured, and the problems that in an existing scheme, a large number of loose areas appear in the initial blank, the initial blank contour precision is poor, and contour defects exist are effectively solved.

The application relates to the battery technical field and discloses a battery pack and an electric device, which comprise a box body, a cover body and a battery monomer assembly. The box body comprises a side plate and a containing cavity with an opening surrounded by the side plate; a glue groove is arranged on the side plate, a glue layer is arranged in the glue groove, a ventilation hole is arranged on the outer wall of the side plate, and the ventilation hole is communicated between the glue groove and the outside of the box body. The cover body is arranged on one side of the opening of the box body, the cover body seals the opening and is bonded with the glue layer in the glue groove. After the battery monomer assembly is arranged in the containing cavity, glue is poured into the glue groove. Then, the cover body is arranged on one side of the opening of the box body, so that the cover body seals the opening and the glue groove, and thus, after the glue solidifies to form the glue layer, the cover body can be bonded with the box body through the glue layer. Since the ventilation hole is arranged on the outer wall of the box body and is communicated between the glue groove and the outside of the box body, air can enter the glue groove through the ventilation hole and contact the glue, so that the glue can absorb the water vapor in the air and quickly solidify, and the forming efficiency of the glue layer is improved.

The application belongs to the technical field of laser additive manufacturing, and particularly relates to an array type laser additive manufacturing method and device, which comprises the following steps: S1, digital model import and layering slicing; S2, scanning path planning and filling setting; S3, array type laser synchronous output control; S4, powder flow and powder feeding path control; S5, according to the width of the additive, the width of single track cladding is adjusted in real time; S6, according to the slice layer material of the additive, the matching material is delivered; S7, S1-S6 are repeated, and layer-by-layer accumulation is performed until the part manufacturing is completed. The application can accurately control the grain size, improve the material microstructure, and improve the mechanical properties; the generation of defects such as thermal cracks and pores is reduced, the stability of the deposition process is ensured; the interlayer bonding is optimized, the quality of multi-layer deposition is ensured; the residual stress is reduced, the size precision, shape stability and fatigue performance of the part are improved; the post-processing requirement is reduced, and the processing cost is reduced.

The present invention relates to the technical field of material forming, and in particular to a superplastic forming device and process for aluminum alloy materials; comprising a bottom plate, an extrusion device is installed at the upper end of the bottom plate; the extrusion device includes a plurality of evenly distributed first hydraulic push rods; and further comprising a lower die device, the lower die device is provided with a plurality of and evenly connected to the bottom plate, the lower die device includes a rectangular plate installed at the upper end of the bottom plate, and the left and right ends of the rectangular plate are slidably connected with rectangular slide bars. The lower die device and the upper die device used in the present invention are both provided with a plurality of, and the plurality of lower die devices and the upper die devices can work at the same time, which effectively improves the efficiency of forming a plurality of aluminum alloy plates, and the plurality of lower die devices and the upper die devices can form aluminum alloy plates of various sizes in one processing process, which effectively improves the flexibility of the forming equipment and reduces the cost of manufacturing different molds.

The invention discloses a liquid cooling driving pump body investment casting process which comprises the following steps: firstly, according to the size and the shape of a pump body, manufacturing a mold with a cavity consistent with the pump body and a loose piece for forming a complex inner cavity structure of the pump body, then injecting wax, molding a wax mold in the mold cavity by adopting a one-time mold splitting molding process, according to the pump body complex inner cavity wax mold, loose pieces are mutually positioned, combined and formed, then wax injection mold splitting is carried out to obtain a wax body, the wax body is connected to a mold head through a pouring gate system to form a tree group, then shell making and dewaxing are carried out on the tree group to form a mold shell, and then roasting, smelting pouring and post-treatment are carried out on the mold shell to form a casting. And the casting is further machined through overhauling, heat treatment, shaping and finish machining, and finally the qualified pump body is obtained if the casting is detected to be correct. Through one-time mold splitting of the wax piece with the complex structure in the inner cavity of the pump body, the mold splitting efficiency is improved, the cost is reduced, meanwhile, the pump body casting is corrected by adopting a one-time composite sizing mold after being subjected to smelting pouring, orderly cooling solidification and heat treatment, and the leakage risk of the pump body casting is greatly reduced.

The system comprises a forming module, a piezoelectric ceramic module in the forming module comprises a self-sensing part, and the system further comprises a data storage module, a piezoelectric ceramic driving module, a liquid pressure feedback module, a data processing module and a feedforward control module. The self-sensing part is matched with all the modules, the sensing capacity of the system is improved, the liquid pressure change in the guide pipe can be accurately captured in real time, the liquid drop forming process can be finely regulated and controlled, spraying abnormity is avoided, and the forming stability and reliability are improved. And re-planning motion planning of the piezoelectric ceramic based on feedforward control, wherein the motion planning comprises curve form, voltage amplitude and frequency change. And the conditions of nozzle blockage and guide pipe breakage can be sensed, production interruption and quality problems are avoided, continuous and stable operation of the system is guaranteed, and the forming quality and efficiency are improved.

The invention relates to medium-entropy alloy powder, a heterogeneous high-strength VCoNi series medium-entropy alloy and a preparation method and application of the medium-entropy alloy, belongs to the field of laser processing materials, and solves at least one of the problems that in the prior art, the strength, plasticity and toughness of the entropy alloy are difficult to synergistically improve in the laser additive manufacturing process, and cracks and air hole defects occur. The entropy alloy powder in the VCoNi system comprises the following chemical components: 29.5%-30.5% of V, 37.5%-39.0% of Co, 26.5%-28.0% of Ni, 3.8%-4.9% of Al, 0.003%-0.03% of C, less than or equal to 5ppm of H, less than or equal to 100ppm of N and less than or equal to 200ppm of O. The powder provided by the invention synergistically realizes improvement of the strength, plasticity and toughness of the alloy, and the preparation method realizes improvement of the strength, plasticity and toughness of the medium-entropy alloy.

The present invention proposes a method for forming a concave curve titanium alloy angle material, which belongs to the technical field of titanium alloy sheet metal manufacturing. In view of the fact that when the concave curve is bent, the web surface is subjected to pressure along the bending line, the material has a tendency to accumulate, and is prone to wrinkling. The present invention adjusts the structure of the hot forming die to increase the web surface forming pressure to increase the flow resistance of the web surface material, and adjusts the shape and size of the rough material to reduce the bending forming resistance, thereby weakening the tendency of material accumulation to cause thickening during the part forming process, thereby avoiding wrinkling during the part forming process; and then through means such as hot correction, the shape characteristics such as the bending angle of the angle material are trimmed. The surface of the part using this method is smooth and flat, without wrinkles; at the same time, the curvature of the part is directly drawn, not bent by traditional hot pressing, and there is no obvious rebound on the curved surface of the part after forming, and the gap for tire inspection is small; the difficulty of part processing is significantly reduced, the part processing cycle is shortened, and production efficiency is improved.

The application relates to a nickel-based cast high-temperature alloy active cooling leading edge component and a manufacturing method thereof, and belongs to the technical field of aircraft thermal protection. The manufacturing method of the nickel-based cast high-temperature alloy active cooling leading edge component is prepared through additive manufacturing and femtosecond laser processing, and comprises the following steps: powder pretreatment, additive manufacturing, additive manufacturing of the nickel-based cast high-temperature alloy powder according to a leading edge component model, control of process parameters and a scanning strategy, preparation of a blank, heat treatment, solid solution treatment and aging treatment of the blank, machining of microscale sweating flow channels on a sweating structure layer on the surface of the blank by using a femtosecond laser, and preparation of a three-layer three-flow leading edge component. Cooling medium is uniformly spread on the surface of the leading edge component, self-driven thermal protection is realized, and the cooling efficiency is relatively high; moreover, the leading edge component has good high-temperature mechanical properties and fatigue resistance, and can realize round trip use of an aircraft.

The invention discloses a space roll bending short-process manufacturing process and device for an automobile A column. The manufacturing process comprises the following steps that a sectional material is extruded; applying vibration force; the profile penetrates into the first-pass three-roller bending mechanism; the sectional material is continuously fed forwards to finish horizontal bending of the middle section; the front end of the profile is transferred to the side of an inlet of a second-pass three-roller bending mechanism, and the end of the profile enters the second-pass three-roller bending mechanism; the subsequently-extruded section bar passes through a first-pass three-roller bending mechanism straightly; the second-pass three-roller bending mechanism completes vertical bending of the preset section of the profile; the rotary cutting device cuts off the tail end of the profile, and then spray quenching and blanking are carried out; and the profile is fed into an aging furnace to be subjected to aging strengthening treatment. The complete continuous production line is designed, extrusion, bending forming, cooling, rotary cutting, discharging and heat treatment of the profile are synchronously carried out, the production technological process is shortened, the quality and stability of the profile are effectively improved, and the working efficiency of production is improved.

The invention provides a method for improving impact toughness of electric arc additive manufacturing titanium alloy, and belongs to the technical field of additive manufacturing. The method comprises the steps that a pretreated forming base material is placed on a cooling device in a gas protection device, when the oxygen content in the gas protection device is smaller than 1000 ppm, the electric arc additive manufacturing process of the titanium alloy is started, meanwhile, the cooling device is started to cool the forming base material, the cooling device is placed in the gas protection device, and the cooling device is started to cool the forming base material. According to the method, the cooling device can cool the environment gas in the gas protection device while cooling the base material, printing can be conducted at a low temperature in the whole additive manufacturing process, and compared with an existing additive printing process in which the environment oxygen content needs to be controlled to be 100 ppm or below, due to the fact that the environment is low in the printing process, the printing efficiency is greatly improved. And the temperature of the formed base material is low all the time, so that the printing quality of the titanium alloy can be guaranteed even if printing is conducted under the high oxygen content, and the titanium alloy is not prone to being oxidized.

The invention discloses a method for regulating and controlling the forming quality of an LPBF nickel alloy inclined thin-wall structure, and the method comprises the following steps: S1, selecting different laser powers to carry out first LPBF printing, and printing thin-wall structures with different inclination angles; s2, measuring the lower surface roughness and density of all the samples, and recording the corresponding laser power with the lowest lower surface roughness and the highest density; s3, a prediction model is constructed, optimal process parameters of other inclination angles are obtained through machine learning, and an inclined thin wall forming quality database is formed; and S4, the optimal laser power is obtained according to the prediction model, and second-time LPBF printing is conducted according to the optimal laser power. The problem that the quality of the lower surface of the nickel alloy inclined thin-wall structure prepared through LPBF is poor can be solved, cost is low, efficiency is high, and practicability is high.

The present invention discloses a method and device for forming an open structure part, which relates to the field of additive manufacturing technology, in order to solve the problem that the forming of open structure parts is difficult and the forming accuracy cannot be guaranteed. A method for forming an open structure part includes: obtaining a three-dimensional model of the part; determining the forming direction of the part according to the three-dimensional model; copying the part in the three-dimensional model to obtain multiple parts, and arranging the multiple parts along the opening direction; constructing a first connecting structure connecting the open end of the part and its adjacent parts in the three-dimensional model; at the same time, constructing a second connecting structure connecting the two open ends of the terminal part in the three-dimensional model to obtain a processing model of the part; according to the processing model and the forming direction, forming and printing the part; processing the print to obtain multiple parts. The method for forming an open structure part provided by the present invention is used for the forming of an open structure part, and the forming method is simple and the forming accuracy is high.

The present application relates to a kind of green frozen sand mold additive manufacturing forming system equipment and method, including heat-insulated sealed printer shell;Detachable multifunctional printing platform;With temperature adjustment function's ink supply system;With heat insulation function's printing assembly;Adjustable sanding volume's sanding device;Adjustable interlayer refrigerator;Multi-material precooling sand mixing device;External control cooling and humidity refrigerating unit.The device of the present application is based on the principle of additive manufacturing, according to the designed three-dimensional digital model of casting, adopts interlayer cooling method to rapidly cool down and freeze the sprayed water-based ink, forms layer by layer, can quickly produce multi-material, green pollution-free, high-quality complex sand mold (core), meet the casting needs in many aspects, improve the performance and precision of casting, realize the high efficiency, high performance and green casting of complex casting.

The invention discloses a contour path planning method for structural circuit integrated manufacturing, a storage medium and equipment, and the method comprises the steps: importing slice contour data of a structural circuit integrated model, extracting all closed contours of a structural circuit from each layer of slice contour data, and calculating the geometric center of each closed contour; a closed contour tree data structure is constructed according to the contour data of each layer of slices, contour offset is set according to the inclusion relation between closed contours, and a printing filling contour is generated; geometric centers of closed contours in each layer of slice contour data form a node set, and an optimal global contour path printing sequence is determined through a genetic annealing algorithm; according to the optimal global contour path printing sequence, the printing starting point of each closed contour is optimally selected, and an optimal printing starting point set of all the closed contours is obtained; and according to the optimal global contour path printing sequence and the optimal printing starting point set, the movement track of the printing head is determined, and the printing filling contour is printed.

The utility model relates to a multi-beam metal 3D printing device which comprises a robot mechanical arm, a laser, a water cooling machine, a control cabinet, a powder feeder, argon equipment and a rotating assembly. A multi-beam spray head is fixedly installed on the robot mechanical arm, the laser is connected with a laser incidence opening of the multi-beam spray head, and the water cooling machine is connected with the laser and a circulating cooling water channel in the multi-beam spray head. By regulating and controlling the working sequence and the synchronous rotating sequence of the first rotating main shaft and the second rotating main shaft, the technology that the two ends of a part are firstly formed and the middle of the part is seamed and formed is achieved, and the closed part can be formed; the multi-beam nozzle does not need to completely form the closed part according to the contour curvature radius of the closed part, so that the problem that forming work cannot be performed due to interference between the nozzle and the part is solved, and meanwhile, the forming technology has the advantages of high forming efficiency, high forming quality and the like.

The invention belongs to the field of optics, and relates to an additive and subtractive optical system and an additive and subtractive forming method, the additive and subtractive optical system comprises a forming light generating device, a 3D galvanometer group, a visual monitor and window glass; the forming light generating device generates forming laser; the 3D galvanometer set and the window glass are sequentially arranged on the light path where the forming laser is located from front to back. The monitoring visual field of the visual monitor covers the window glass; and the forming laser passes through the window glass and then enters the additive and subtractive working surface. The invention provides an additive and subtractive material optical system and an additive and subtractive material forming method which can ensure smooth proceeding of additive and subtractive material processing, ensure forming quality and improve forming efficiency.

The invention discloses an improved device for a cavity with controllable temperature of ultra-low temperature processing for spinning, which belongs to the technical field of spinning equipment and comprises a core mold, a spinning wheel, a power control element, an ultra-low temperature processing cavity and a tail top, wherein an alloy pipe is sleeved on the core mold; when a spinning program is running, the relative spatial position of the ultra-low temperature processing cavity device and the spinning wheel on the same side does not change, and the ultra-low temperature processing cavity device is parallel to the surface of the alloy pipe and maintains a fixed distance; ultra-low temperature processing technology, controllable processing temperature and spinning parameters are adopted to improve the friction state of the spinning area, inhibit the wear of the spinning wheel, and timely dissipate the deformation heat generated in the spinning process, thereby greatly improving the forming efficiency and forming quality of the alloy pipe, and at the same time having the advantages of extending the fatigue life of the formed pipe, improving the comprehensive mechanical properties of the formed pipe, and reducing the processing cost.

The application discloses a large-diameter corrugated pipe precision forming die and process, relates to the technical field of corrugated pipe dies, and comprises an upper die base, a lower die base and middle die pieces, the middle die pieces are provided in groups, the end portions of each group of middle die pieces are connected with hydraulic cylinders through connecting rods, the hydraulic cylinders are installed below the lower die base, guide columns are arranged on the lower die base, the upper ends of the guide columns are connected with the upper die base, the guide columns are provided in two, and the two guide columns are connected with the upper die base and the lower die base through guide sleeves. The large-diameter corrugated pipe precision forming die and process adopt the above structure, the position control mode of the die pieces is coordinately controlled through laser sensors, the peak position can be accurately detected, corrugated pipes with different wave heights can be formed, the adaptability is good, the position movement of the die pieces is realized through the control of the hydraulic cylinders, the die pieces are flexibly moved, the peak positions are consistent when the die is closed, the problem of low wave form precision of the corrugated pipe in the forming process is solved, the forming efficiency is improved, and the forming quality is ensured.