147 results about "Pre deformation" patented technology

The invention relates to the technical field of welding deformation control, and discloses a multi-stage adjusting method and system for steel structure welding deformation control. The method comprises the steps that steel member parameters are measured, a welding deformation prediction model is established, and pre-deformation data are obtained; performing accurate pre-deformation processing according to the data; executing segmented welding and recording a temperature field and a deformation amount; performing local heat treatment on the high-stress area to obtain stress distribution; correcting a deformation area by using multi-point force; and performing precision detection and quality evaluation according to the corrected data to form a control file. According to the method, high-precision control over welding deformation of the complex steel structure is achieved through data transmission and feedback adjustment of all stages.

The invention discloses a mechanical part pre-deformation clamping process method based on simulation analysis, and relates to the technical field of mechanical manufacturing. The method comprises the following steps that S1, a design drawing, material characteristic parameters, blank size specifications and technical parameters of a clamp system of a to-be-machined part are collected; according to the method, an integrated simulation model of a part, blank and clamp system is constructed, blank key parameters and the constraint relation of all parts are fused, multi-field coupling simulation is combined, the theoretical deformation field pre-judgment precision is greatly improved, reliable data support is provided for pre-deformation design, a target compensation curved surface is generated through a geometric inversion algorithm, and the pre-deformation design precision is improved. By matching with a pre-deformation clamp with an adjusting mechanism, reverse pre-deformation is realized, differences of different batches of blanks are adapted, machining and rebound deformation are effectively counteracted, simulation and process parameters are corrected through a detection result by means of a closed-loop optimization mechanism, machining precision stability is guaranteed, trial cutting cost and rejection rate are reduced, and the method is suitable for machining of various easily-deformed parts.

The invention belongs to the technical field of double-color injection molds, and provides an anti-deformation method for a double-color injection molded part, electronic equipment and a storage medium, and the anti-deformation method comprises the following steps: constructing a double-color injection simulation model according to a modeling mode; an injection molding simulation part is obtained through the double-color injection molding simulation model; analyzing the injection molding simulation part to obtain warping data of the injection molding simulation part; determining a pre-deformation scheme according to the warping data; mold opening data and reserved data are modified according to the pre-deformation scheme; mold opening verification is conducted according to the modified data and the reserved data, and an injection molding workpiece is obtained; the actual deformation amount of the injection molding workpiece is obtained; and if the actual deformation cannot meet the requirement, the mold opening data and the reserved data are adjusted until the actual deformation meets the requirement. According to the method, the mold opening data and empirical measure reservation are corrected by analyzing the theoretical deformation data, obtained by the double-shot molding simulation model, of the simulation part, and the product quality of the formed part is improved.

The invention relates to the technical field of high-temperature alloys, and provides a preparation method of an oversized ingot type high-temperature alloy forging material, which comprises the following steps: S1, heating a high-temperature alloy ingot; s2, the high-temperature alloy cast ingot obtained in the step S1 is subjected to pre-deformation, wherein pre-deformation comprises upsetting and drawing-out which are conducted in sequence; s3, the pre-deformed high-temperature alloy cast ingot is subjected to homogenizing heat treatment; s4, performing cogging thermal deformation on the high-temperature alloy ingot subjected to the homogenizing heat treatment; and S5, the forging stock obtained in the step S4 is cooled and then subjected to heat treatment, and finally radial forging is conducted. According to the preparation method of the high-temperature alloy forged material, firstly, a large-size high-temperature alloy cast ingot is subjected to pre-deformation with the small deformation amount, and then homogenization heat treatment is conducted at the high temperature, so that segregation phases in the cast ingot are redissolved, segregation elements are diffused, and the high-temperature alloy forged material is obtained. And after homogenization, the high-temperature alloy cast ingot is subjected to fast forging and radial forging, and the high-temperature alloy bar with the uniform structure is obtained.

The invention belongs to the technical field of high-temperature alloy heat treatment, and discloses a method for improving the hot working performance of a nickel-based high-temperature alloy for a molten salt reactor by combining pre-deformation and homogenization. The method comprises the steps that raw materials of the nickel-based superalloy for the molten salt reactor to be improved are sequentially subjected to vacuum induction melting, pouring and electroslag remelting refining treatment, and an electroslag remelting refined alloy cast ingot is obtained; the electroslag remelting refined alloy cast ingot is sequentially subjected to heating, heat preservation and pre-deformation treatment and is air-cooled to the room temperature, and a pre-deformed cast ingot is obtained; and the pre-deformed cast ingot is subjected to homogenization treatment and air cooling to the room temperature, and the method is completed. The method is a novel heat treatment process combining pre-deformation and high-temperature homogenization, the hot working performance of the alloy is optimized, the high-temperature alloy uniform in structure and excellent in mechanical property is obtained, and application in the field of high-temperature molten salt energy systems is met.

The utility model discloses an extrusion die for an asymmetric-section 2195 aluminum-lithium alloy section for aerospace. The extrusion die is provided with a pre-deformation cavity, a flow guide cavity and a working belt, wherein the pre-deformation cavity is used for preliminarily deforming a blank towards the section of the section; the flow guide cavity is used for adjusting metal flow in different areas; the pre-deformation cavity and the flow guide cavity are arranged in a stepped mode in the direction of the working belt, the cavity walls of the flow guide cavity are provided with different offsets and flow guide inclination angles according to the section characteristics of the sectional materials and the flowing characteristics of metal, the purpose of directly extruding the straight sectional materials can be achieved through the working belt arranged in a two-stage mode, the product has good perpendicularity, the appropriate section size is obtained, and the production efficiency is improved. And the twisting defect is reduced.

The invention relates to the technical field of roller coating hyperbolic aluminum plate machining control, in particular to an edge auxiliary traction system and method for longitudinal large-curvature forming of a roller coating hyperbolic aluminum plate. The edge auxiliary traction system comprises a clamping pre-deformation unit, when a main stretcher is started, a traction clamping jaw pulls down at a basic speed, and a dynamic proportional relation between the edge stretching speed and the central stretching speed is established; during stretching, when the displacement increment reaches a threshold value, the traction force is proportionally distributed according to the distance from the center line, the pull-down force is updated in real time, when the strain deviation exceeds the limit, a deviation area is positioned through a multi-modal array, the traction speed and the pull-down force of the area are increased, and the local curvature radius reaches a critical range, a reinforced traction mode is started; speed and plastic flow phase locking and grain orientation regulation and control are achieved, traction force is maintained till stress is released in the pressure maintaining stage, the longitudinal large-curvature forming precision of the roller-coated hyperbolic aluminum plate is improved, wrinkles and cracks are reduced, and the method is suitable for machining of the high-precision hyperbolic aluminum plate.

The invention provides a heat treatment method for deformation and phase change synergistic strengthening of a high-strength aluminum alloy, and relates to the technical field of aluminum base alloy heat treatment. The treatment method comprises the following steps: S10, at a solid solution temperature, carrying out solid solution treatment on an aluminum alloy, and carrying out quenching treatment after the solid solution treatment to obtain a W-state aluminum alloy; s20, at the pre-aging temperature, the W-state aluminum alloy is subjected to pre-aging treatment, and after cooling, the PA-state aluminum alloy is obtained; s30, 0-8% of pre-deformation is conducted on the PA-state aluminum alloy, and the pre-hardened aluminum alloy is obtained; s40, at the first aging temperature, the pre-hardened aluminum alloy is subjected to first-stage aging treatment for 1-60 min, and a first-stage aluminum alloy is obtained after cooling; wherein the first aging temperature is smaller than the pre-aging temperature; s50, at the second aging temperature, the first-stage aluminum alloy is subjected to second-stage aging treatment for 1-60 min, and a second-stage aluminum alloy is obtained after cooling; wherein the second aging temperature is lower than the first aging temperature.

The invention discloses a high-toughness aluminum-lithium alloy and a preparation method, and belongs to the field of metal material processing technologies, and the preparation method comprises the following steps: carrying out solution treatment on an annealed aluminum-lithium alloy, then carrying out 3-5% of pre-deformation, then carrying out low-temperature pre-aging on the pre-deformed aluminum-lithium alloy, then adding 1-8% of intermediate secondary deformation, then carrying out high-temperature aging, and finally carrying out high-temperature aging treatment on the pre-deformed aluminum-lithium alloy to obtain the high-toughness aluminum-lithium alloy. And cooling to room temperature to obtain the high-toughness aluminum-lithium alloy. According to the method, dislocation configuration of the aluminum-lithium alloy is uniform and compact through a two-stage stretching heat treatment (TTIA) process, precipitation strengthening of a T1 phase is promoted, and alloy weak points are pinned, so that plasticity is improved while the strength of the aluminum-lithium alloy is greatly improved, and synergistic growth of the strength and plasticity of the alloy is achieved; the aluminum-lithium alloy treated by the method is high in strength and good in plasticity, and can meet the performance requirements of the fields of aerospace, automobile manufacturing and the like on structural materials in the national industrialization process.

The invention provides a rolling pre-deformation method for improving toughness and plasticity of 2-series aluminum alloy, and belongs to the technical field of aluminum alloy material processing. The rolling pre-deformation method comprises the following steps: sequentially carrying out solid solution quenching treatment, ultralow-temperature transverse rolling pre-deformation, rolling pre-deformation and aging treatment on a 2-series aluminum alloy hot-rolled plate. The quenching-state 2-series aluminum alloy is sequentially subjected to transverse and rolling-direction variable-temperature pre-deformation, the grain structure, dislocation configuration and distribution can be well regulated and controlled, a fine and uniform precipitated phase is obtained after aging, and the strength, toughness and forming performance of the 2-series aluminum alloy are improved while the anisotropy of the plate is reduced. The method is simple in process, convenient to operate and easy to industrialize.

The invention discloses an engine blade welding deformation control method based on pre-deformation and active cooling, and relates to the technical field of precision welding manufacturing, and the engine blade welding deformation control method comprises the following steps: collecting multi-source real-time monitoring data in a blade welding process, and inputting the data into a trained welding heat-force coupling dynamic model; performing nonlinear interaction analysis on real-time monitoring data through a built-in deformation semantic analysis unit in the welding heat-force coupling dynamic model, extracting core characteristic parameters, and creating a regulation and control decision system comprising a strain state space, a temperature control action space and a deformation compensation evaluation function by utilizing the strain state mapping set; the method is used for predicting a deformation response value corresponding to each regulation action. According to the method, through a regulation and control decision system comprising a strain state space, a temperature control action space and a deformation compensation evaluation function, deformation response is predicted, an optimal cooling path and a pre-compensation quantity regulation and control scheme are generated, and finally dynamic optimal control over blade welding deformation is achieved.

The invention provides a NiTiCu ternary alloy-based shape memory alloy spring and a preparation method thereof, and relates to the field of shape memory alloys. The method comprises the following steps: (1) a NiTiCu ternary alloy wire is wound into a NiTiCu spring by adopting a hot rolling forming process, and the winding forming temperature is Af + 100 DEG C to Af + 200 DEG C; (2) in a vacuum environment, the NiTiCu spring is subjected to solution treatment, then water quenching is conducted, then aging treatment is conducted, and the heat-treated NiTiCu spring is obtained; and (3) after pre-deformation treatment is conducted on the heat-treated NiTiCu spring, training is conducted in two media of Mf-10-50 DEG C and Af + 10-50 DEG C, circulation is conducted to the target number of times, and the target NiTiCu spring is obtained after training is completed. According to the method, the NiTiCu spring with low lag, fast response and high fatigue resistance is obtained by optimizing the NiTiCu ternary alloy wire component design and cooperating with the spring machining training technology.

The present invention discloses a method for improving the plasticity of a magnesium alloy by secondary manipulation of twin orientation through torsional deformation. The method comprises the following steps: applying compressive stress to a pretreated magnesium alloy bar for pre-deformation, wherein the compressive stress is applied perpendicular to the c-axis of the grains within the magnesium alloy bar, and the deformation amount of the pre-deformation is 0.5% to 8%; subjecting the pre-deformed magnesium alloy bar to one to eight torsional deformation passes at a temperature of 150°C to 250°C and a torsion angle of 10° to 180°, followed by annealing to obtain a high-plasticity magnesium alloy. The method of the present invention can achieve the purpose of secondary manipulation of twin orientation, thereby significantly improving the plasticity of the magnesium alloy bar. It has the advantages of simple process, convenient operation, and low equipment cost, and can be applied to large-sized magnesium alloy billets.

The invention discloses a high-thermal-conductivity low-cost magnesium alloy plate and a preparation method thereof, and belongs to the field of metal materials. The Mg-Gd-Er-Zn-Zr series magnesium alloy is subjected to solution treatment after being fused and cast, pre-deformation rolling is directly conducted at the temperature of 400-450 DEG C, and the pre-deformation amount is 40%. And then the pre-deformed alloy plate is further rolled at the temperature of 350-400 DEG C, and the final deformation reaches 80%. And through composite rolling, the high-thermal-conductivity magnesium alloy plate with the average grain size of 4.3-12.9 microns and containing the crushed Mg3Zn3 (Gd, Er) 2 phase is obtained. The thickness of the obtained plate ranges from 2.0 mm to 2.3 mm, the yield strength can reach 241 MPa to 295 MPa, the tensile strength can reach 292 MPa to 335 MPa, the ductility can reach 7% to 14%, and the heat conductivity can reach 54 W / (m.K) to 138 W / (m.K). The alloy is low in rare earth element content, simple in preparation process and high in production efficiency.

The invention discloses a low-expansion three-temperature cold and hot plate and a preparation method, and belongs to the field of precise alloy components. The cold and hot plate is made of titanium-niobium-based alloy, the titanium-niobium-based alloy comprises, by atomic percent, 25%-35% of Nb, the total content of V and / or Ta smaller than or equal to 3% and the balance Ti, the titanium-niobium-based alloy comprises a three-temperature structure of a low-temperature adaptation area, a normal-temperature stable area and a high-temperature tolerance area, the thickness of the titanium-niobium-based alloy ranges from 1.5 mm to 2 mm, and the surface of the titanium-niobium-based alloy is provided with a nitride layer or a passive film. The preparation method comprises the steps of burdening, 2-3 times of vacuum consumable smelting, hot forging, hot rolling, partition cutting, pre-deformation regulation and control, solid solution quenching, cold rolling finishing, splicing forming and the like, and vacuum stress relief annealing and dual performance detection are matched. The method is suitable for scenes such as chip packaging and precision detection, and is low in cost and high in qualified rate.

The application provides a manufacturing method of a super-thick hollow pressure-bearing plate structure, comprising the following steps: dividing the pressure-bearing plate into multiple splicing units and cutting; pre-deforming the butt joint welds between all the splicing units by the vector height distribution of the support tooth plate, and completing the overall assembly of all the splicing units at one time; after the front surface of all the butt joint welds is welded, the pressure-bearing plate is turned over for the first time and the back surface is welded; the welding process adopts CO2 gas protection backing welding and automatic filling and covering welding; the pre-welding preheating temperature is 100-200 DEG C; the backing welding current is 260+ / -20 A, the voltage is 28+ / -2 V, and the welding speed is 300+ / -30 mm / min; the filling and covering welding current is 680+ / -30 A, the voltage is 32+ / -2 V, and the welding speed is 400+ / -40 mm / min; the weld slope adopts a double-sided asymmetric U-shaped slope; the sum of the double-sided fusion depths of the pressure-bearing plate is not less than 2 / 3 of the plate thickness; and the front surface welding depth of the butt joint weld is at least 20 mm before turning over. The manufacturing process is first used without constraint, in a whole set and whole welding manner, and the construction efficiency is considered on the basis of deformation control, and the flatness precision can reach more than 1 mm / m.

The invention discloses a material processing automation power device and a manufacturing method, the material processing automation power device comprises a rack, the rack is provided with a constant tension discharging device E1, and the constant tension discharging device E1 is sequentially provided with a correcting and flattening device E2 and a feeding and pre-deformation module E3 backwards; the output end, far away from the correcting and flattening device E2, of the feeding and pre-deformation module E3 is connected with the three-dimensional forming and forging module E4; the three-dimensional forming and forging module E4 is connected with the material taking and clamping transposition module E6 through the motion control and shearing module E5, the accessory embedding and closing module E7 is arranged below the material taking and clamping transposition module E6, and the protective cover and welding module E8 is arranged in front of the material taking and clamping transposition module E6. The device is suitable for precision machining requirements of various metal materials, and the production efficiency and the product consistency are improved.

The invention discloses a method for improving the comprehensive performance of a 6xxx aluminum alloy coiled material and the aluminum alloy coiled material, and belongs to the technical field of aluminum alloy manufacturing. The method comprises the following procedures of fusion casting, homogenizing heat treatment, temperature control rolling, low-temperature rolling, annealing, solid solution quenching, pre-deformation and pre-aging treatment.The traditional technology is optimized, the production period is shortened, efficiency is improved, and the production cost is reduced. By implementing the scheme, the ratio gt of the long axis to the short axis of the grain structure can be obtained; 1.2, the average grain size is 16 to 22 microns, and Cube {001} lt; 100 gt; according to the aluminum alloy coiled material finished product, the plastic strain ratio r is larger than or equal to 0.5, the anisotropy # imgabs0 # is smaller than 0.1, the tensile strength is larger than or equal to 250 MPa, the yield strength is larger than or equal to 125 MPa, the ductility is larger than or equal to 24%, and the bake hardening peak value increment reaches 90-150 MPa.

The invention provides a high-strength and high-toughness aluminum-lithium alloy plate and a preparation method thereof, and belongs to the technical field of metal materials and metallurgy. According to the method, an aluminum-lithium alloy cast ingot with excellent casting performance is cast through alloy elements in scientific proportion and a precise smelting process, most casting defects are eliminated through hot rolling deformation, sufficient machining strengthening is obtained through cold rolling deformation, then two-section pre-deformation is conducted on an aluminum-lithium alloy plate subjected to solution treatment, the dislocation density is increased, and the machining strength of the aluminum-lithium alloy plate is improved. The aging precipitation power of the alloy is remarkably improved, a large number of fine and dispersed T1 (Al2CuLi) phases and theta '(Al2Cu) phase strengthening phases are precipitated in the aging process, the strength, toughness and plasticity of the aluminum-lithium alloy are effectively improved, a destressed high-strength and high-toughness aluminum-lithium alloy plate with the flat appearance is obtained, the yield strength can reach 520-560 MPa, the tensile strength can reach 580-630 MPa, the ductility is 8-12%, and the tensile strength can reach 580-630 MPa. And the use requirements of high-standard aerospace structural materials can be met.

According to the machining device suitable for pre-deformation treatment before welding of the end socket body, pre-deformation treatment can be conducted on the end socket of a pressure container, and follow-up welding machining is facilitated. The device comprises an induction coil heating device, a pre-deformation processing roller device and a workbench capable of freely rotating and moving, the induction coil heating device is arranged in front of the pre-deformation processing roller device, and the metal material is softened through instantaneous heating; the pre-deformation processing roller device synchronously moves along with the movement of the induction coil heating device, and an upper roller and a lower roller can freely rotate, so that pre-deformation processing at different angles is realized; the workbench capable of freely rotating and moving can rotate and move by different degrees, and the machining efficiency and flexibility are improved. The device is high in pre-deformation treatment adaptability and suitable for welding of different materials, especially welding of thin-wall components, and special welding sequence optimization does not need to be conducted on the components. And uniform stress of the component and consistent machining area are ensured, and the machining efficiency and flexibility are improved.

The application discloses a TiAl alloy, a deformation heat treatment method and application, and the alloy is as follows: Ti-(43-48)Al-(0-8)X-(0-0.5)Z, wherein X is one or two or more of Nb, Mo, Cr, Ta, V and Mn elements; Z is one or two or more of Fe, C, N, O, B and Si elements; the alloy is a fine-grain duplex structure, the fine-grain duplex structure is composed of fine-size sheet group and equiaxial gamma grains; the size of the sheet group is 20-40 mu m, the size of the gamma grain is 10-20 mu m, and the volume fraction of the gamma grain is 30-60%; firstly, high-density crystal defects are generated in the original structure by controlling the deformation temperature, the deformation rate and the deformation amount of the pre-deformation treatment; and then, the fine-grain near-sheet structure or the duplex structure is obtained by controlling the holding temperature and the holding time in the isothermal heat treatment process.

The utility model relates to the technical field of steel wire production, in particular to a pre-deformation device with an adjusting effect for steel wire production, which comprises a base, one side of the outer wall of the base is movably connected with an access door plate, and a driving mechanism is arranged above the base; the driving mechanism comprises a motor, the motor is embedded in the base, the power output end of the motor is connected with a two-way threaded rod, the outer wall of the two-way threaded rod is slidably connected with a sleeve, the outer wall of the sleeve is fixedly provided with a connecting disc, a fixing block is embedded in the outer wall of the connecting disc, and the front end of the fixing block is fixedly provided with a mounting cylinder; by means of the motor, the bidirectional threaded rod, the sleeve, the connecting disc, the fixing block, the mounting cylinder, the electromagnet, the sliding cylinder, the metal block, the supporting rod and the abutting plate, a steel wire can be automatically clamped, the angle and the range are adjusted, automation is improved, repeated operation or participation of workers is avoided, and the production efficiency is improved.

The present application relates to the field of injection molding technology, and specifically to a method for improving the warping deformation of a sunroof bracket, comprising: establishing three-dimensional data of the sunroof bracket and preliminarily determining the matching surface and bonding requirements of the sunroof bracket; importing the product data into mold flow analysis software for simulation analysis, optimizing and analyzing the injection molding process parameters that affect the warping deformation of the sunroof bracket through an experimental design method with the goal of minimizing the warping deformation; calculating the warping deformation of the product, and if the warping deformation is less than or equal to a first evaluation threshold, performing a pre-deformation analysis on the product data; importing the three-dimensional solid data after the pre-deformation analysis into the mold flow analysis software again for simulation analysis, and comparing the simulation analysis results with theoretical data to obtain a deformation face difference value. If the deformation face difference value is less than or equal to a second evaluation threshold, the data is judged to be qualified. Thus, measures to improve the warping deformation of the sunroof bracket are proposed in advance before making the mold, saving manpower and mold repair costs.

The invention discloses a high-temperature-resistant wrought aluminum alloy and a preparation method thereof, and relates to the technical field of aluminum alloys. Aluminum alloy serves as a metal raw material, a small amount of titanium element is added, and the mechanical strength of the alloy is enhanced; after heat preservation is conducted for a period of time under the over-high-temperature condition, the overall mechanical strength, tensile strength and ductility of the alloy are enhanced; secondly, pre-deformation, water quenching and aging treatment are conducted, and the strength and plasticity of the alloy are further enhanced; and finally, the alloy surface is subjected to sand blasting and coated with a modified epoxy resin coating, so that the effects of high strength and corrosion resistance are achieved. According to the modified epoxy resin coating, carboxyl ethyl silanetriol sodium salt and epoxy resin are subjected to esterification combination, the hardness of the coating after curing on the surface of the aluminum alloy is improved, and meanwhile the adhesive ability and the corrosion resistance between the coating and the aluminum alloy are enhanced; and then mixing with sodium vanadium molybdate, and uniformly coating on the surface of the aluminum alloy to relieve metal corrosion and improve the adhesion strength between the coating and the alloy interface.

The present invention discloses a method for improving the creep age forming performance of aluminum alloy. The characteristics are as follows: first, the aluminum alloy blank is solution-treated and then water-quenched to obtain a semi-finished aluminum alloy product; then, the quenched semi-finished aluminum alloy product is subjected to aging treatment; then, the aged semi-finished aluminum alloy product is subjected to high-speed impact pre-deformation; finally, the semi-finished aluminum alloy product after high-speed impact pre-deformation is subjected to creep age forming to obtain a finished aluminum alloy product. The advantages are that before the creep age forming of the semi-finished aluminum alloy product, high-speed impact pre-deformation treatment is carried out, so that the internal grains of the aluminum alloy are refined, and at the same time, dislocation microstructures can be introduced into the aluminum alloy matrix, effectively improving the creep amount of the aluminum alloy, promoting the dislocation movement in the aluminum alloy, accelerating the precipitation of the precipitation phase, improving the strength and forming performance of the finished aluminum alloy product, facilitating the simultaneous forming and property improvement of the aluminum alloy, and saving energy consumption.

A core soil size optimization method based on control of a pre-deformation of a tunnel face, relating to the technical field of tunnel construction. The method comprises: first determining a tunnel construction scheme, and dividing a section according to a tunnel excavation sequence; and then establishing different reserved core soil size numerical models for simulated excavation calculation, wherein core soil sizes corresponding to the minimum pre-deformation amount are optimal sizes. The method compensates fills the gap in optimization of core soil sizes by considering the influence of the core soil sizes on a pre-deformation of a tunnel face at present, thereby providing a reference for determining core soil sizes in future construction processes using the new Italian tunneling method.

The present invention provides an automatic forming device for composite material special-shaped curved surface, comprising a machine tool conveying slide, a movable workbench, a mold, a visual inspection device and an upper mold lifting device; the mold is arranged on the movable workbench, the machine tool conveying slide conveys the movable workbench with the mold to the upper mold lifting device, and the visual inspection device detects the surface morphology of the prepreg on the mold during the conveying process, and the upper mold lifting device has a pair of rollers in the diaphragm frame, and the bottom of the diaphragm frame is fixed with a ductile diaphragm, and the pair of rollers is used to adjust the drape deformation of the diaphragm in the diaphragm frame according to the information detected by the visual inspection device, so that the size of the diaphragm used to compact the prepreg is adapted to the prepreg. The present invention obtains the position of the complex curved surface of the prepreg in the mold by detecting the inner surface morphology of the mold through the visual inspection device, and feeds back to the pair of rollers and adjusts the drape deformation of the diaphragm, so as to realize the pre-deformation of the diaphragm to the prepreg.

This invention discloses a composite deformation heat treatment process for improving the strength and corrosion resistance of aluminum-lithium alloys, belonging to the field of aluminum-lithium alloy preparation technology. The composite deformation heat treatment process for improving the strength and corrosion resistance of aluminum-lithium alloys of this invention includes the following steps: (1) performing solution treatment, water quenching, and natural aging treatment on the aluminum-lithium alloy in sequence; (2) performing pre-deformation treatment on the aluminum-lithium alloy treated in step (1); (3) performing non-isothermal aging treatment on the aluminum-lithium alloy treated in step (3); wherein, the pre-deformation amount of the pre-deformation treatment is 4~10%; the non-isothermal aging treatment is to first raise the temperature from 40℃ to 140~200℃ and then lower the temperature to 100~160℃; the aluminum-lithium alloy treated by the composite deformation heat treatment process of this invention has both good mechanical properties and corrosion resistance.

The invention relates to the technical field of hot forming, and discloses a composite material hot forming method based on thermal activation topology reconstruction, which comprises the following steps: S1, material pretreatment; s2, topological structure design: pre-deformation is applied to the blank at the temperature above the glass-transition temperature of the base material, and programmed cooling is performed to lock stress after a temporary topological configuration is formed through mold constraint; s3, a thermal activation stage: heating the programmed blank to an activation temperature interval; s4, dynamic reconstruction forming: guiding a material molecular chain and a reinforced phase to be dynamically rearranged in a thermal activation state to form a target topological structure; s5, topology locking: fixing the reconstructed topological structure through gradient cooling or cross-linking curing; s6, machining and performance testing are conducted on the formed part; through interface modification technologies such as treating carbon fibers with a silane coupling agent and treating silicon nitride particles with oxygen plasma, a high-bonding-strength and low-defect blank foundation is provided for subsequent hot forming, and the interface performance is improved.

The invention relates to the technical field of metal elbow production, and provides a manufacturing method of a black metal elbow, which comprises the following steps of material selection, pre-deformation treatment, blanking, heating, forming, bending, heat treatment, surface treatment and intelligent detection. According to the manufacturing method of the black metal elbow, through a series of process optimization and innovation, the material performance, the forming quality and the surface quality of the elbow are remarkably improved, and the quality and reliability of a product are ensured. The method has the advantages of being advanced in process, easy and convenient to operate, controllable in quality and the like, can meet the high-quality requirements of different fields for the black metal elbow, and has wide application prospects and market value. And meanwhile, the implementation of the method contributes to promoting the technical progress and industrial upgrading of the ferrous metal processing industry, and makes positive contributions to the development of related fields.