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90 results about "Isothermal forging" patented technology

Isothermal forging represents a possible alternative to produce near net and net shape forgings.The basic principle of isothermal forging consists of a plastic forming process during which die and work piece temperatures are identical or very similar. Full Name Comment goes here.

Method for controlling dimensional precision and surface quality in superplastic forming process of TC4 titanium alloy

The invention discloses a dimensional precision and surface quality control method in a TC4 titanium alloy superplastic forming process, which is characterized by comprising the following steps of: performing two-phase region forming forging on a TC4 titanium alloy cast ingot after a high-low high upsetting and drawing process to obtain a blank; the blank is subjected to isothermal forging forming, the height of the blank is monitored in real time, the deformation stage is judged to be the mold filling stage, the compaction stage and the shaping stage according to the height of the blank, the hot initial forging condition is adopted in the mold filling stage, the hot intermediate forging condition is adopted in the compaction stage, the hot forming forging condition is adopted in the shaping stage, and finally a forge piece is obtained; and the forge piece is subjected to solution treatment and aging heat treatment. According to the method, the change of the monitored height is combined with the real-time adjustment of forging process parameters, so that the anisotropy in a microstructure is minimum, crystal grains are finest and uniform, the comprehensive performance is optimal, and meanwhile, the precision control and the surface quality improvement are achieved.
Owner:宝武特种冶金有限公司 +2

Preparation method of high-performance Ti2AlNb-based alloy plate

The application discloses a preparation method of high-performance Ti2AlNb-based alloy plate and belongs to the technical field of titanium alloy plate preparation. The application discloses a preparation method of high-performance Ti2AlNb-based alloy plate, and the specific steps are as follows: firstly, the grain size is refined through multi-directional near-isothermal forging and hot rolling, and the comprehensive performance of the plate is improved, wherein the ingot is subjected to multi-directional near-isothermal forging in an alpha2+B2 phase zone (1020 DEG C-1040 DEG C) and an O+B2 phase zone (930 DEG C-960 DEG C), and the grain size of the forged alloy is refined through continuous temperature reduction phase transformation and recrystallization; then, only upper and lower cover plates are added to cover the plate, rivets are used to fix the blank, and hot rolling is carried out in an alpha2+O+B2 phase zone (980 DEG C-1010 DEG C), and the plate is air-cooled after rolling to obtain the Ti2AlNb-based alloy plate with relatively excellent performance. Then, through comparison and experiment, the process of 1000 DEG C / 20min / argon gas rapid cooling heat treatment is selected. Finally, the Ti2AlNb-based alloy plate with excellent performance at room temperature is obtained.
Owner:BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP CO LTD +1

Forging method for regulating and controlling TiAl alloy lamellar orientation

PendingCN121244817AIngotMaterials processing
The invention discloses a forging method for regulating and controlling TiAl alloy lamellar orientation, and belongs to the technical field of TiAl alloy material processing. The method comprises the following steps: coating a TiAl alloy ingot by adopting a soft sheath, heating a coated TiAl alloy blank, carrying out one-way multi-pass near isothermal forging, and carrying out heat treatment after re-forging to obtain a TiAl alloy forging stock with a full lamellar structure; according to the method, a TiAl alloy blank is subjected to one-way multi-pass near-isothermal forging in an (alpha + beta) two-phase region, the forged structure is that fine alpha2 / gamma photo layer groups with preferred orientation are distributed on a beta o phase net-shaped matrix, and then the TiAl alloy blank is subjected to heat treatment near an alpha phase transition point to eliminate the beta o phase in the forged structure; and the full lamellar structure TiAl alloy forging stock with the lamellar preferred orientation is obtained, and the comprehensive mechanical property of the TiAl alloy forging is comprehensively provided.
Owner:CHONGQING SANHANG ADVANCED MATERIALS RES INST CO LTD

Vacuum isothermal forging mechanical hand digital twin monitoring method and device based on physical constraint neural network

A vacuum isothermal forging mechanical hand digital twin monitoring method and device based on physical constraint neural network, the main steps include: combining the collectable data with the equipment mechanism model, using neural network and mechanism model to obtain the data of difficult monitoring position, optimizing and correcting the simulation data of the whole equipment, obtaining the temperature and stress change of the whole structure of the mechanical hand in different working states, and mapping it to the virtual twin body of the mechanical hand; taking the minimum contact distance error and the maximum clamping stiffness prediction accuracy as the objective function, setting the reasonable range of the mechanical hand parameters based on the historical data or expert experience, and obtaining the recommended parameters through the Gaussian process modeling and the expected improvement method. The method can establish a more accurate vacuum isothermal forging mechanical hand digital twin model, and give the work parameter recommendation of carrying new products, which can effectively shorten the generation cycle and adapt to small batch and multi variety production type.
Owner:BEIJING RESEARCH INSTITUTE OF MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD CAM

High-efficiency circulating cooling system and control method for vacuum isothermal forging, and storage medium

This invention discloses a high-efficiency circulating cooling system and control method for vacuum isothermal forging, as well as a storage medium, relating to the field of temperature control. It includes an initial self-test module, a sensor monitoring module, an external environment monitoring module, a data processing module, and a feedback processing module. By sending pure-tone sinusoidal sound waves to the cooling water pipes, it quickly detects whether the cooling water pipes are blocked. Combining external environmental influencing factors, it comprehensively evaluates the operating status of the cooling water pipes based on real-time water flow parameters at various points in the pipes, improving accuracy. It dynamically adjusts the rotation speed of the closed-loop pumping unit, supplying cooling water on demand, saving energy, reducing wear, optimizing the production process, lowering maintenance costs, and improving cooling efficiency.
Owner:GUIZHOU ANDA AVIATION FORGING

Heating and heat preservation device of aluminum alloy isothermal forging die

The utility model discloses a heating and heat preservation device of an aluminum alloy isothermal forging die, which comprises a lower die block and an upper die block arranged at the top of the lower die block, an upper die heat insulation base plate for insulating heat of the upper die block is arranged at the top of the upper die block, and a heat insulation plate for insulating heat of the lower die block is arranged at the bottom of the lower die block. In order to improve the heat balance speed and efficiency, high-thermal-conductivity die steel is selectively adopted to manufacture the upper die and the lower die of the cavity, in order to reduce the invalid heat energy consumption of an isothermal die and block or reduce the heat energy loss path, a heat insulation material is adopted to wrap a coil and the die on the outer layer of the die, and the contact and heat exchange between the outer surface of the die and air are reduced; under the condition that the necessary temperature of isothermal forging is guaranteed, the input energy of induction heating is reduced, the production cost is reduced, high-thermal-conductivity die steel is adopted between an induction heating coil and a module or a combined module of the die, and the heat balance speed and efficiency of the module are improved.
Owner:NINGBO JIAHENG INTELLIGENT TECHNOLOGY CO LTD

Isothermal forging forming device for irregular complex forgings

The utility model relates to the technical field of forging, in particular to an isothermal forging forming device for irregular complex forgings, which comprises a forging table, a lower die is assembled above the forging table, a special-shaped groove is arranged on the surface of the lower die, a hot temperature table is assembled between the lower die and the forging table, an upper pressing die is arranged above the lower die, and a lower pressing die is arranged above the upper pressing die. A hydraulic cylinder is assembled above the upper pressing die, an assembling frame is assembled outside the hydraulic cylinder in a supporting mode, side columns are supported on the side edges of the assembling frame, lower stand columns are supported at the bottom of the assembling frame and supported on the side edges of the upper portion of the forging table, side baffles are assembled on the two sides and the rear side edges of the lower stand columns in a supporting mode, and a front frame is assembled on the front sides of the lower stand columns. A front blocking door is hinged to the interior of the front frame. According to the utility model, heating and temperature increasing can be conveniently carried out according to use requirements, the temperature has no difference with the temperature of a forge piece, isolation and heat preservation can be conveniently carried out, and assembly and use are more convenient.
Owner:NANJING JINMANYUAN MASCH MFG TECH CO LTD

Preparation method of TiAl alloy with honeycomb shell structure

The invention discloses TiA with a honeycomb shell structure as well as a preparation method, a product and application of the TiA. The method comprises the steps that mixed powder is loaded into a pure titanium tube to be subjected to vacuum packaging, hot isostatic pressing treatment is conducted for 4-6 hours at the temperature of 1200-1300 DEG C and the pressure of 150-200 MPa, then near-isothermal forging is conducted at the temperature of 1250-1300 DEG C at the pressing speed of 0.5-2 mm / s, and the single-pass deformation is 15-25%. The obtained honeycomb shell structure is formed by distributing a W-rich beta phase along a grain boundary and is of a net-shaped wrapping alpha < 2 + > gamma structure. By means of the structure, the yield strength and the tensile strength of the TiAl alloy from the room temperature to 900 DEG C are remarkably improved by about 8%-10%, and meanwhile the room-temperature plasticity of the alloy is basically kept. The method avoids the problems of resource waste and brittle phase increase caused by excessive addition of rare metal elements in a traditional method, has the dual advantages of resource saving and performance optimization, and is suitable for preparing high-temperature structural parts of aerospace engines.
Owner:BAOJI TITANIUM IND CO LTD

High-strength aluminum alloy multi-station isothermal forging forming device

The invention relates to the technical field of forging forming, in particular to a high-strength aluminum alloy multi-station isothermal forging forming device. Comprising hollow transmission frames which are symmetrically arranged front and back; the left inner side of the transmission frame is rotationally connected with a driving roller driven by a motor; the right inner side of the transmission frame is rotationally connected with a driven roller; the outer walls of the driving roller and the driven roller are jointly in transmission connection with a transmission belt; the middle section of the transmission frame penetrates through the heating box close to the left and the cooling box close to the right; the heating box is used for heating by using an electrified heating wire; the cooling box is used for cooling by air cooling; the bottom of the heating box and the bottom of the cooling box are connected with the rack in a supporting mode. A fixed mold with a fixed cavity is fixedly connected to the outer surface of the transmission belt in the transmission direction; the die and the blank are driven by the transmission belt to move integrally, the whole process is completed in a closed machining channel formed by the heating box and the cooling box, temperature drop loss in the blank transferring process is eliminated, and it is ensured that the blank is formed within the set temperature range.
Owner:QINGDAO MOSEN DESIGN & MFG CO LTD

Composite preparation process of high-strength aluminum alloy special-shaped ring forge piece

The invention discloses a composite preparation process of a high-strength aluminum alloy special-shaped ring forge piece, and belongs to the technical field of metal plastic processing and heat treatment. The technology sequentially comprises the steps of multidirectional isothermal forging cogging, intermediate solution treatment, special-shaped preformed blank near-net forming, pulse current auxiliary special-shaped ring rolling and deformation heat treatment. Intermediate solution treatment is introduced to interrupt tissue inheritance, and a uniform fine-grain matrix is obtained; by means of the electroplastic effect of pulse current, efficient near-net forming of the special-shaped section is achieved at the low temperature, and grains are further refined; and finally, through combination of pre-cooling deformation and aging deformation heat treatment, synergistic improvement of strength and toughness is achieved. According to the method, the technical problems that in the preparation process of the high-strength aluminum alloy special-shaped ring forge piece, the structure is uneven, the performance anisotropy is high, special-shaped forming is difficult, and the material utilization rate is low are effectively solved, and a near-net-shape product with excellent comprehensive performance and high size precision can be stably obtained.
Owner:JIANGSU ZHUHONG HEAVY IND CO LTD

Environment adjusting method, device and equipment for vacuum isothermal forging space and medium

The invention provides an environment adjusting method, device and equipment for a vacuum isothermal forging space and a medium, and is applied to the technical field of industrial automation and intelligent control. The method comprises the steps that according to initial environment parameters of an internal vacuum isothermal forging space of the automatic heater, environment evaluation indexes are determined; determining a first environment adjustment parameter according to the first membership degree of different evaluation grades corresponding to the environment evaluation index; according to the first environment adjusting parameter, first-time environment adjusting is conducted, and a first vacuum isothermal forging space is obtained; when the environmental parameters of the first vacuum isothermal forging space do not meet the preset parameter threshold value, a second environmental adjustment parameter is determined according to the vacuum isothermal forging parameters, the historical forging standard parameters and the historical forging parameters, then environmental adjustment is conducted again, and a second vacuum isothermal forging space is obtained; environmental parameters of the second vacuum isothermal forging space meet preset parameter thresholds. And the control precision, the self-adaptability and the intelligence of vacuum isothermal forging are remarkably improved.
Owner:GUIZHOU ANDA AVIATION FORGING

Isothermal forging and single crystal regeneration synergistic preparation method for large-size titanium alloy forge piece

The invention relates to the technical field of titanium alloy crystal preparation, in particular to a large-size titanium alloy forge piece isothermal forging and single crystal regeneration synergistic preparation method which comprises the steps that a forging material ingot is heated, after heat preservation, the forging material ingot is discharged out of a furnace to be subjected to upsetting, drawing-out and air cooling after forging, the forging material ingot is heated again to be above a beta phase transformation point, upsetting, drawing-out and air cooling after forging are continued, and a blank is obtained; the blank is heated to the temperature below the beta phase transformation point, and upsetting, drawing and air cooling are conducted; heating to a temperature above a beta phase transformation point, homogenizing, upsetting, drawing out and air-cooling; finally, heating to below a beta phase transformation point, upsetting, drawing to a target diameter, and cutting to obtain a forging stock; the forging stock is subjected to die forging forming in an isothermal forging mode, the strain rate is adjusted in a self-adaptive mode according to the crystal characteristics of the forging stock, and a die forging blank is obtained; and after standing in water, carrying out aging heat treatment, and carrying out air cooling after heat preservation to obtain the titanium alloy beta-phase crystal. According to the method, the forging effect is optimized, and the uniformity of beta-phase crystals of the titanium alloy is ensured.
Owner:XIAN UNIV OF SCI & TECH +1

Vacuum isothermal forging equipment with automatic discharging function

The invention discloses vacuum isothermal forging equipment with an automatic discharging function, and belongs to the technical field of metal forging, the vacuum isothermal forging equipment comprises a base, two supporting frames are fixedly mounted at the top of the base, a same top plate is fixedly mounted at the top ends of the two supporting frames, and a hydraulic cylinder is mounted at the bottom of the top plate; the lower die base is fixedly installed on the top of the base, a piston of the hydraulic cylinder is connected with a cover plate in a sliding mode, an installation plate is fixedly installed on the piston of the hydraulic cylinder, a cross beam is fixedly installed at the bottom end of the piston of the hydraulic cylinder, a stamping plate is arranged below the cross beam, and the stamping plate is matched with the lower die base. Heating plates are installed on the inner walls of the two sides of the lower die base correspondingly, and a vacuum pump is fixedly installed at the top of the base. And through mutual cooperation of the concentric-square-shaped notch and the concentric-square-shaped convex block and arrangement of the water injection box and the floating plate, when the cover plate moves downwards, a water source is sealed through the concentric-square-shaped notch, and gas leakage is prevented.
Owner:HEFEI METALFORMING MACHINE TOOL

Isothermal forging die holder for machine tool drill bit forging equipment and machine tool drill bit

PendingCN121988689AMetal-working drilling toolsForging/hammering/pressing machinesThermodynamicsElectric machinery
The invention discloses an isothermal forging die holder for machine tool drill bit forging equipment and a machine tool drill bit, and relates to the technical field of forging dies, the isothermal forging die holder comprises an upper die holder, a lower die holder and an alternate heat insulation assembly, and the alternate heat insulation assembly comprises a driving motor fixed on the surfaces of the lower die holder and the upper die holder; and a first heat insulation plate and a second heat insulation plate are embedded in the surface of the sliding shelf side by side. According to the invention, the temperature sensor monitors the temperature of the first heat insulation plate or the second heat insulation plate in the heat insulation work in real time, and when the temperature exceeds a threshold value, the heat insulation plate in the heat insulation work is replaced through the arrangement of the double heat insulation plates; therefore, the problems of pulverization and compaction of a heat insulation plate material caused by the fact that a single heat insulation plate is under the continuous action of high temperature and high forging load for a long time are solved, the two heat insulation plates alternately undertake a heat insulation task and alternately dissipate heat and cool through the alternate design, the high-temperature continuous working time of the single plate is greatly shortened, heat aging and structural damage are delayed, and the service life of the heat insulation plate is prolonged. The service life of the heat insulation plate is prolonged.
Owner:HUBEI XINGLONG TOOLS CO LTD

Isothermal forging method for 3D printing billet of nickel-based superalloy dual-property disk-shaped forging

The application discloses an isothermal forging method for a 3D printing blank of a nickel-based high-temperature alloy double-performance disc-shaped forging, and the steps are as follows: firstly, a 3D printing nickel-based high-temperature alloy powder is used to prepare a raw disc blank, then the raw disc blank is forged into an intermediate blank as a whole through first isothermal forging, a first gradient grain size is obtained, the overall grain size of the intermediate blank reaches 7-9 levels, and high-temperature durability and creep performance are good; then the blade pre-forging blank of the intermediate blank is forged into the blade of the disc-shaped forging in a local manner through second isothermal forging, a second gradient grain size is obtained, the grain size of the blade part of the disc-shaped forging reaches 11-12 levels, high-cycle fatigue performance and vibration resistance are good, and finally the disc-shaped forging is completed. The above-mentioned overall + local forging method is used to isothermally forge the double-performance disc-shaped forging on a single alloy blank body, and the method is mainly used for forming of a nickel-based high-temperature alloy double-performance disc-shaped forging of an aero-engine.
Owner:GUIZHOU ZIRCON TECH DEV CO LTD

Preparation method of high-performance Ti2AlNb alloy forging stock

The invention relates to the technical field of non-ferrous metal processing methods, in particular to a preparation method of a high-performance Ti2AlNb alloy forging stock, which comprises the following steps: carrying out multi-heating-number blooming forging on a Ti2AlNb alloy ingot, carrying out multi-heating-number and multi-direction forging deformation on the bloomed and forged blank to obtain a Ti2AlNb alloy forging rod or forging cake, and carrying out multi-heating-number isothermal forging deformation on the Ti2AlNb alloy forging cake to obtain the high-performance Ti2AlNb alloy forging stock. And finally, the Ti2AlNb alloy forging cake obtained after Ti2AlNb alloy forging rod or forging cake machining is subjected to solid solution and aging treatment in an electric furnace, and then the high-performance Ti2AlNb alloy forging stock is obtained.The preparation method effectively solves the problems that alloy cracks in the forging process and the structure is uneven, meanwhile, anisotropy of the forging stock is reduced, the comprehensive mechanical property of the forging stock is improved, and the high-performance Ti2AlNb alloy forging stock is obtained. All technical indexes meet relevant standard requirements, production efficiency is high, equipment and operation are simple, operability is high, and batch production can be achieved.
Owner:CHONGQING SANHANG ADVANCED MATERIALS RES INST CO LTD +1

Forging method for improving anisotropy and strength-toughness match of ultra-high strength and toughness beta titanium alloy

The application belongs to the field of novel beta titanium alloy hot working, and particularly relates to a forging method for improving anisotropy and strength-toughness matching of super-high strength and toughness beta titanium alloy. The method comprises the following steps: homogenizing a rod, wherein the heating temperature is (Tbeta+30)~(Tbeta+100) DEG C, and high-temperature homogenization treatment is performed for 15-30 hours; high-temperature reversing upsetting and drawing forging, the heating temperature of each fire is reduced by 20-50 DEG C in turn, and the range of the heating temperature is (Tbeta+30)~(Tbeta+100) DEG C; blank forging to obtain a blank; and isothermal forging on the blank to obtain a forged piece. The beta titanium alloy forging process specification is formulated, the problem of anisotropy of TB17 titanium alloy is greatly improved, and the strength and plasticity and toughness are well matched.
Owner:SHAANXI HONGYUAN AVIATION FORGING

Isothermal forging forming method for forged piece with irregular shape

The isothermal forging forming method is characterized by comprising the technological processes of isothermal forging, isothermal pre-forging, corrosive washing, isothermal forging forming, heat treatment, secondary corrosive washing and the like at the specific temperature, the compactness of the internal structure of the forge piece is improved, the fiber direction and layout of the internal structure of the forge piece are optimized, the strength of the forge piece is improved, and the forging quality is improved. The machining efficiency is improved; the machining cost is reduced; valuable material resources are saved; and the comprehensive performance of the forge piece is improved. The method is suitable for isothermal forging forming of forgings in irregular shapes.
Owner:GUIZHOU ANDA AVIATION FORGING

Isothermal forging hydraulic press with protection function

The invention relates to the technical field of isothermal forging, and discloses an isothermal forging hydraulic press with a protection function, the isothermal forging hydraulic press comprises a base, a supporting table and a hydraulic press, the supporting table is fixedly connected to the top end of the base, the hydraulic press is fixedly mounted on the inner side of the supporting table, and the discharging mechanism comprises a collecting box fixedly connected to the side wall of the base. And the discharging assembly and the feeding mechanism are arranged at the bottom of the hydraulic press, the storage box is fixedly connected to the side wall of the base, metal plates are automatically fed and discharged through the discharging mechanism and the feeding mechanism, material loading and unloading can be conducted in a stable and rapid rhythm, the influence of fatigue, emotion and other factors is avoided, and the working efficiency is improved. Compared with the prior art, the machining cycle of a single workpiece is greatly shortened, the overall production efficiency is improved, in addition, a worker does not need to stretch the hand into a dangerous area of the stamping device, safety accidents such as hand clamping and hand pressing caused by misoperation or equipment failures are effectively avoided, and the personal safety of the worker is guaranteed.
Owner:HEFEI METALFORMING MACHINE TOOL

High-temperature lubricant for vacuum isothermal forging process as well as preparation method and application of high-temperature lubricant

The invention provides a high-temperature lubricant for a vacuum isothermal forging process as well as a preparation method and application of the high-temperature lubricant. The lubricant is prepared from the following raw materials: 25 to 35 weight percent of surface activated boron nitride powder, 5 to 8 weight percent of molybdenum disulfide microsphere powder, 8 to 10 weight percent of glass powder, 5 weight percent of potassium silicate, 1 to 2 weight percent of silica gel, 10 to 16 weight percent of feldspar powder, 1.5 to 4 weight percent of flatting agent, 1 to 1.5 weight percent of preservative, 0.8 to 2 weight percent of dispersing agent, 1 to 1.5 weight percent of defoaming agent and the balance of water. The high-performance high-temperature lubricant specially used for the vacuum isothermal forging process is developed by adopting an alkali solution, urea and a silane coupling agent to carry out rapid surface chemical activation treatment and a ball-milling modification technology on boron nitride powder, and has excellent dispersity, lubricity and stability; and the technical defects of the existing glass-based lubricating material are fundamentally overcome.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Double-station alternating type cooling and shaping device for isothermal forging of titanium alloy forgings

The invention discloses a double-station alternating type cooling and shaping device for isothermal forging of titanium alloy forgings, and relates to the technical field of titanium alloy forgings machining.The double-station alternating type cooling and shaping device for isothermal forging of the titanium alloy forgings comprises a cooling machine box and further comprises a feeding conveying belt, a feeding alternating distribution assembly, a placing assembly and a cooling assembly; a feeding chamber is arranged in the middle of the interior of the cooling machine box, cooling chambers are arranged on the left side and the right side of the interior of the cooling machine box, and the feeding alternate distribution assembly comprises a feeding mechanism and a distribution roller. The placing assembly is mounted at the bottom of the cooling chamber; by means of the cooling machine box with the double cooling chambers, titanium alloy forgings can be guided into the left side or the right side vacant cooling chamber through the distribution roller in the feeding chamber, the two cooling chambers are alternately used, and the situation that the cooling chambers cannot be used when standing or cleaning is conducted is avoided; the forge piece can be continuously cooled, and the cooling efficiency of the titanium alloy forge piece is improved.
Owner:JIANGSU VOTTI NON-FERROUS METAL CO LTD

High-erosion-resistance steam turbine blade and preparation method thereof

According to the high-erosion-resistance steam turbine blade and the preparation method thereof, nickel-chromium-aluminum-yttrium alloy on the bottom layer is tightly combined with the surface of a base material, and the thermal stress difference between a coating and the base material can be effectively buffered; the middle layer is compounded with titanium carbide through nickel-chromium-aluminum-yttrium alloy, so that smooth performance transition from the bottom layer to the surface layer is realized, the overall toughness of the coating is enhanced, and interlayer cracking is avoided; the composite structure of the tungsten carbide on the surface layer and the nickel-chromium-aluminum-yttrium alloy endows the coating with extremely high hardness, wear resistance and erosion resistance, can enduringly resist erosive wear of water drops and solid particles in steam, prevents pits, pits and cracks from being formed on the surface of the blade, and maintains the integrity of the aerodynamic appearance. Multidirectional upsetting and step-by-step isothermal forging are combined, base material grains are refined, and the structure uniformity is improved; the microstructure is optimized through solid solution aging treatment, and the strength and toughness of the base material are enhanced; according to the composite coating prepared through the atmosphere plasma spraying technology, the binding force of all the layers is excellent, and the defects that a traditional chromium plating layer is prone to stripping, and the binding force of a spraying layer is insufficient are effectively overcome.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

In-situ rapid fabrication method of high-organization-uniform nickel-based alloy turbine disc

This invention provides an in-situ rapid preparation method for a nickel-based alloy turbine disk with high microstructure and uniformity, relating to the field of nickel-based superalloy technology. The method includes the following steps: modeling the nickel-based alloy turbine disk using 3D digital software to form a turbine disk model, and simultaneously reverse-engineering the mold shape of the turbine disk; slicing the turbine disk model, forming a complete printing path in a laser additive manufacturing device, and performing 3D printing on the mold; after printing, moving the mold as a whole to a vacuum isothermal forming device for vacuum isothermal forging, and automatically demolding to obtain a precision forged turbine disk; heat-treating and machining the forging to obtain the nickel-based alloy turbine disk. This invention combines the advantages of precise 3D printing and vacuum isothermal precision forming, solving the problems of solidification defects and microstructure in printed parts, achieving in-situ precision forming, enabling automated and standardized processes, improving product production efficiency, yield, and material utilization, and possessing significant commercial value.
Owner:BEIJING RESEARCH INSTITUTE OF MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD CAM

Preparation method of low-stress 7xxx series aluminum alloy large forge piece

The invention relates to the technical field of non-ferrous metal processing, and particularly provides a preparation method of a low-stress 7xxx series aluminum alloy large forge piece. The preparation method comprises the following steps: S1, carrying out forging treatment on an aluminum alloy ingot blank by adopting an isothermal forging process to obtain a forge piece; s2, the forge piece is subjected to solution treatment; s3, fixing the forge piece subjected to solution treatment by using a profiling tool, and putting the forge piece into a quenching solution for quenching treatment; wherein the quenching solution is a polyalkylene glycol aqueous solution; and S4, the forged piece subjected to quenching treatment is subjected to cold pressing treatment and graded aging treatment, and a finished product is obtained. The graded solution treatment process is combined with the controllable quenching technology, and the subsequent cold pressing treatment is matched, so that the residual stress level of the forge piece is effectively controlled.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST

Method for improving creep property of hot-worked beta-gamma-TiAl alloy

The invention discloses a method for improving the high-temperature creep property of a beta-gamma-TiAl alloy, which comprises the following steps: firstly, carrying out wire cut electrical discharge machining and machining on a TiAl alloy ingot to obtain an alloy sample with a smooth surface and without obvious cracks and wire cutting traces, then carrying out multidirectional near-isothermal forging, carrying out 90-degree rotation during each forging, and carrying out heat treatment on the alloy sample to obtain the high-temperature creep property of the beta-gamma-TiAl alloy. And the external force loading direction is continuously changed, so that the hydrogen element in the alloy is fully diffused and removed, and the hydrogen embrittlement phenomenon is effectively inhibited. And meanwhile, the multidirectional stress effect promotes uniform distribution of the internal structure of the alloy, the structure anisotropy caused by single-direction deformation is broken, dynamic recrystallization is promoted to be fully carried out, and grain refinement is achieved. And finally, the creep property of the material is remarkably enhanced through the process, and the complex working condition requirements are met.
Owner:NANJING UNIV OF SCI & TECH

Vacuum isothermal forging fault monitoring method and system based on AI method

The invention discloses a vacuum isothermal forging fault monitoring method and system based on an AI method, and relates to the technical field of intelligent operation and maintenance of complex equipment, and the method mainly comprises the steps of AI model construction, data collection and preprocessing, edge calculation anomaly monitoring, central decision model prediction, early warning generation and push, model updating and optimization, and the like. According to the method, an equipment end edge anomaly monitoring and central decision fusion mechanism is adopted: multiple types of sensors are arranged at an equipment end, and data are transmitted to a multi-node edge calculation module for parameter prediction and distributed anomaly monitoring; the central decision-making part transmits all fault monitoring sensor data and prediction data of equipment to a central calculation module, predicts potential problems of product quality in combination with a process simulation agent model, and provides graded early warning. The method is designed for the vacuum isothermal forging system, equipment failure and forging quality prediction are considered, potential problems can be predicted in the early stage, and the equipment failure and defective products are avoided.
Owner:BEIJING RESEARCH INSTITUTE OF MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD CAM

Heat insulation guide rail for vacuum chamber isothermal forging hydraulic machine

The invention relates to the technical field of isothermal forging hydraulic machines, and discloses a heat insulation guide rail for a vacuum chamber isothermal forging hydraulic machine, which comprises a movable sliding block and a plurality of supports, the plurality of supports are uniformly fixed at the corners of the movable sliding block, and the corners of the movable sliding block are fixedly connected with two fixed seats through the supports; a sliding seat is fixedly connected between the two fixing seats, a sliding groove is formed in one side of the sliding seat, a sliding rail is connected into the sliding groove, a heat insulation mechanism is arranged in the sliding groove, the heat insulation mechanism conducts heat insulation between the sliding seat and the sliding rail by conveying compressed air, and a mounting plate is fixedly connected between the two fixing seats. According to the heat insulation guide rail for the vacuum chamber isothermal forging hydraulic machine, heat insulation can be effectively conducted between the guide rail and the movable sliding block, deformation and mechanical abrasion of the guide rail and accessories of the guide rail are reduced, rigid connection between the guide rail and the movable sliding block is not changed, and the guiding and positioning effects of the guide rail on the movable sliding block are guaranteed.
Owner:HEFEI METALFORMING MACHINE TOOL

Isothermal forging die tool for manufacturing titanium alloy lower cross arm

The utility model discloses an isothermal forging die tool for manufacturing a titanium alloy lower cross arm, and relates to the technical field of isothermal forging dies, the isothermal forging die tool for manufacturing the titanium alloy lower cross arm comprises an upper die, a lower die is arranged on the lower portion of the upper die, a forming cavity is arranged between the upper die and the lower die, and the lower die is arranged in the forming cavity. A constant-temperature assembly is installed on the bottom face of the lower die and comprises a temperature guide module and a sliding groove, the temperature guide module is installed on the bottom face of the lower die, the sliding groove is formed in one side of the bottom face of the lower die, a sliding block is installed on the inner wall of the sliding groove, and an insertion plate is installed on one side of the sliding block. Heat can be quickly and uniformly conducted to the mold through the constant-temperature assembly, the preheating time of the mold is shortened, the constant-temperature assembly can be adjusted or replaced according to needs through the design of the sliding groove, the sliding block and the insertion plate, and the flexibility and adaptability of the mold are improved.
Owner:JIANGSU VOTTI NON-FERROUS METAL CO LTD

High-conductivity ultrahigh-strength aluminum alloy material for aviation and preparation method thereof

PendingCN122013006AAviationHigh density
The invention belongs to the technical field of aeronautical materials, and particularly relates to an aeronautical high-conductivity ultrahigh-strength aluminum alloy material and a preparation method thereof. Through the Zr-Er-Y multi-element microalloying synergistic effect, a coherent Al3 (Zr, Er and Y) nano dispersed phase is formed, grains are remarkably refined, recrystallization is inhibited, meanwhile, the Y element optimizes the grain boundary precipitated phase form, the grain boundary binding force is improved, and a structure foundation is laid for high toughness of the alloy. A cooperative treatment strategy of isothermal forging and pressing, water quenching and two-stage aging is adopted in the process, and high-density dislocation and water quenching freezing dislocation configuration is introduced in forging and pressing so as to retain deformation stored energy. Two-stage aging promotes uniform dispersion of a precipitated phase, efficient superposition of deformation strengthening and precipitation strengthening is achieved, and the strength and fatigue resistance are remarkably improved. And finally, the strength, the electric conductivity and the fatigue limit of the alloy are synchronously improved while the high plasticity is kept, the bottleneck of mutual restriction of the strength and the corrosion resistance is effectively broken through, and the harsh requirements of aerospace on high-strength, high-electric-conductivity and high-fatigue materials are met.
Owner:RUNZHU ELECTRIC TECHNOLOGY (LAIZHOU) CO LTD