6214 results about "Forging" patented technology

The invention relates to the technical field of machining control, and discloses a forging part machining process control method and system based on digital twinning. The method comprises the following steps: acquiring temperature field and stress field data streams of large oil press equipment and forgings at multiple points in different areas; performing organization-defect association mode recognition on the data stream to generate a forging process database; a constitutive unit nesting method is adopted to construct a digital twinborn model, and a microstructure evolution unit is embedded in a macroscopic unit; performing nonlinear progressive simulation to obtain a critical deformation condition and a defect threshold value; and carrying out reverse solution on the process window to obtain an optimal process parameter combination. According to the method, the forging digital twin model is established through the constitutive unit nesting method, bidirectional coupling of macroscopic deformation and microstructure evolution is achieved, a stable process parameter combination is determined through the process window reverse solution technology, and therefore the quality stability and production efficiency of forged parts are improved.

The invention discloses hydraulic machine equipment suitable for die forging and blank making of various flanges and a forging method, and belongs to the technical field of flange production equipment.The hydraulic machine equipment suitable for die forging and blank making of various flanges comprises a base and further comprises a top plate, the top plate is arranged on the upper side of the base, and a guide column is arranged between the top plate and the base; the first hydraulic oil cylinder is fixedly arranged on the top plate, and a piston rod of the first hydraulic oil cylinder is connected with a pressure head; all positions of the forge piece are sequentially arranged on the lower side of the pressing head through the swing mechanism, all positions of the forge piece are conveniently and evenly forged, workers do not need to shake the forge piece back and forth by utilizing a clamp or a clamp on the side, and when the pressing head moves upwards every time, the die holder is automatically separated and is matched with the air spraying opening to blow away waste chips generated in the die holder during forging and pressing of the forge piece; and excessive scraps are prevented from being accumulated in the die holder and being matched with the forge piece gradually filling the die holder again, the follow-up processing time of the flange forge piece is shortened, and the flange processing efficiency is improved.

The invention discloses a high-impact-toughness Ti80 titanium alloy forging stock with the extra-large specification of more than 9 tons and a manufacturing method. The manufacturing method comprises the following steps: S1) adopting a Ti80 titanium alloy cast ingot with the diameter of 960-1060 mm and the weight of 9-17 tons; (S2) cogging and forging are conducted, the cast ingot is subjected to upsetting and drawing for 2-5 heating numbers in a beta-phase region, and the upsetting and drawing deformation of each heating number is 30-55%; (S3) intermediate forging is conducted, specifically, the blank is subjected to 3-4 heating number upsetting and drawing in a beta-phase region, the upsetting and drawing deformation of each heating number is 30-55%, and air cooling is conducted after upsetting and drawing; and (S4) finished product forging is conducted, 3-5 heating number drawing is conducted at the temperature 30-60 DEG C below the phase transformation point, the deformation of each heating number is 10-30%, and the total deformation is larger than or equal to 50%. The thickness of the obtained forging stock is 200-500 mm, the width is 1000-2500 mm, the length is 2000-4000 mm, and after the forging stock is annealed, the tensile strength of each position is larger than or equal to 840 MPa, the yield strength is larger than or equal to 740 MPa, the ductility is larger than or equal to 10%, and the impact energy is larger than 60 J. And the obtained forging stock is uniform in structure, the material is not cracked in the forging process, and the yield and the impact toughness after annealing are improved.

The invention relates to a preparation method of a low-cost TC21 titanium alloy large-specification bar, which comprises the following steps: 1) carrying out two-heating cogging forging on a TC21 titanium alloy ingot: carrying out beta single-phase region high-temperature forging at the first heating to obtain an intermediate billet ingot with a square cross section; in the second heating number, low-temperature upsetting and reversing drawing-out forging are carried out, then high-temperature forging is carried out, and an intermediate billet cast ingot with the square section and the grain size being 1-2 mm is obtained; (2) three-heating-number bar forging is carried out, specifically, in the first heating number to the second heating number, the intermediate blank cast ingot is upset and then drawn out and forged into a blank with the octagonal section in each heating number, and in the third heating number, the intermediate blank is drawn out into an intermediate blank with the twelve-square section; and (3) forming and forging for one heating number, wherein the middle blank with the twelve-square section is milled into a rod blank with the round section and the required size. By means of the method, the uniformity of the bar structure is improved, and the TC21 titanium alloy large-specification bar with the structure and performance meeting the requirements of phi 350 mm can be prepared at low cost.

The invention discloses hot forging forming equipment for a large wind power main shaft forge piece and a using method of the hot forging forming equipment, and belongs to the technical field of forging device.The hot forging forming equipment for the large wind power main shaft forge piece comprises forging equipment and further comprises an outer shell, and the outer shell is placed on the forging equipment; the supporting piece is fixedly arranged in the outer shell, a supporting seat is movably arranged on the supporting piece, and a jacking hydraulic cylinder used for driving the supporting seat to ascend and descend is arranged at the bottom of the outer shell; the multiple sets of supporting transverse rods are arranged and slidably connected with the outer shell, the ends of each set of supporting transverse rods are connected with the same die holder body, and the multiple die holder bodies define a main shaft die cavity used for forging a forge piece body; according to the method, the main shaft forge piece can be rapidly separated from the main shaft die without an iron column ejection mode, residual oxidation chippings in the main shaft forge piece are automatically removed in the process, the workload of workers is reduced, and the forging efficiency and the forging effect of the main shaft forge piece are improved.

The invention belongs to the technical field of forging equipment, particularly relates to forging equipment and a forging method for improving the three-direction uniformity of a large aluminum alloy forge piece, and provides the following scheme aiming at the problems that the three-direction tensile property of the forge piece cannot be improved to the same level through existing forging equipment, and workers cannot be effectively protected. The forging equipment for improving the three-way uniformity of the large aluminum alloy forgings comprises a base, a frame body is fixed to the top of the base through a supporting rod, two electric push rods fixedly penetrate through the interior of the frame body, the same top plate is fixed to the top ends of output shafts of the two electric push rods, and a plurality of connecting rods are fixed to the bottom end of the top plate. Blanks can be overturned through rotation of the placing table, lifting of the lifting block and movement of the trapezoidal frame, so that the blanks can be forged by the forging head in different directions, different temperatures of the blanks in the hot forging furnace are achieved, and in addition, the hot forging furnace can be braked through cooperation of the shifting block and the check block under the action of centrifugal force.

An isothermal near-net forming method of a TC4 titanium alloy aeroengine blisk comprises the following steps that (1) the surface of a TC4 titanium alloy bar is coated with a glass lubricant, and the TC4 titanium alloy bar is heated to T beta-(30-80) DEG C; 2) coating a glass lubricant on the pre-forging die and heating the pre-forging die to T beta-(30-80) DEG C; (3) the bar is loaded into a pre-forging die to be forged into an intermediate blank, at least one heating number of forging is carried out, the strain rate is smaller than or equal to 0.01 s <-1 >, and the deformation amount is 60-70%; after forging is completed, the intermediate blank is water-cooled to the room temperature; (4) the intermediate blank is heated to T beta-(30-80) DEG C; 5) coating a glass lubricant on a finish forging forming die and heating to T beta-(30-80) DEG C; the method comprises the following steps of (1) carrying out primary forging on an intermediate blank, (2) carrying out secondary forging on the intermediate blank, (3) carrying out secondary forging on the intermediate blank, (4) carrying out secondary forging on the intermediate blank, (5) carrying out secondary forging on the intermediate blank, (6) loading the intermediate blank into a final forging forming die, pressing the intermediate blank into a blisk forge piece, carrying out at least one-heating-number forging, carrying out water cooling on the blisk forge piece to room temperature, (7) carrying out solution treatment on the blisk forge piece and carrying out water cooling to room temperature, and (8) carrying out aging treatment on the blisk forge piece and carrying out air cooling to room temperature.

The invention discloses a production process and forging equipment for connecting a hollow variable cross-section oil cylinder with a large forge piece, and belongs to the technical field of forge piece forging. Forging equipment for large forgings connected with hollow variable-cross-section oil cylinders comprises a rack and further comprises a pressing head arranged on the upper side of the rack, and hydraulic equipment used for driving the pressing head to ascend and descend is arranged on the rack; the forging table is arranged on the rack and located on the lower side of the pressing head, and a rotating motor used for driving the forging table to rotate is arranged on the rack; the lifting mechanism is arranged on the side edge of the rack and used for driving the forging table to ascend and descend in the vertical direction of the rack. The forging table is automatically adjusted to move downwards and the forge piece is automatically adjusted to move upwards when the forge piece is controlled to be overturned, so that the forge piece overturning step is simplified, the forge piece overturning efficiency is improved, the distance does not need to be adjusted in one direction to leave an overturning space for the forge piece, the size of forging equipment is conveniently reduced, and then the forging cost is reduced.

The invention belongs to the field of metal powder hot isostatic pressing and additive manufacturing near-net forming, and discloses a hot isostatic pressing forming method for preparing a substrate for additive manufacturing by mixing SS-PREP and EIGA Ti6Al4V ELI spherical powder, which comprises the following steps of: 1, mixing Ti6Al4V ELI powder prepared by SS-PREP and Ti6Al4V ELI powder prepared by EIGA according to a proportion under atmosphere protection; 2, in vacuum vibration powder loading equipment, the mixed powder is loaded into a steel sheath, and degassing seal welding is carried out; step 3, placing the seal-welded sheath in hot isostatic pressing equipment, carrying out heat preservation and pressure maintaining sintering forming, and then carrying out gradient cooling; and 4, after cooling, the steel sheath is removed through machining, and the large-size substrate for additive manufacturing is obtained. The prepared substrate has excellent comprehensive mechanical properties which are higher than the level of traditional forgings, and the application requirements of additive manufacturing are met.

A method for improving the fatigue performance of a titanium alloy seamless tube. The method comprises: S1, mixing raw materials, pressing same into a plurality of electrode blocks, and welding the plurality of the electrode blocks to obtain a consumable electrode; S2, smelting the consumable electrode 2-3 times by using a vacuum consumable electrode arc furnace, so as to obtain a titanium alloy cast ingot; S3, upsetting and drawing the cast ingot multiple times and rolling same into a titanium alloy bar; S4, subjecting the bar to precision forging, with the amount of times of heating being no more than twice; S5, annealing and straightening same, followed by turning and drilling treatments, so as to obtain a rough blank of a titanium alloy seamless tube; S6, subjecting same to multi-pass cold rolling, so as to obtain a semi-finished titanium alloy seamless tube product; S7, performing vacuum annealing and acid pickling; S8, performing electrolytic-magnetic composite polishing; and S9, performing a shot blasting treatment. The method can effectively improve the rotating bending fatigue performance, and the titanium alloy seamless tube can endure 20 million test cycles.

The invention discloses a preparation method of a high-toughness corrosion-resistant titanium alloy pipe, which comprises the following steps of: 1, sequentially carrying out multi-heating forging deformation and one-time precision forging deformation on a titanium alloy cast ingot to obtain a titanium alloy bar blank; 2, machining the titanium alloy bar blank into an extrusion blank, and carrying out sheath extrusion to obtain an extrusion pipe blank; and thirdly, the extruded pipe blank is subjected to heat treatment, and the high-toughness corrosion-resistant titanium alloy pipe is obtained. According to the method, the titanium alloy cast ingot is prepared into the bar blank through the efficient fine grain forging and precision forging method, then the titanium alloy extrusion blank is machined, the pipe blank is prepared through extrusion, and finally the titanium alloy pipe is obtained through heat treatment, so that it is effectively guaranteed that the titanium alloy pipe has the excellent structure and performance, and the requirements for high toughness and corrosion resistance of the oil and gas exploration service environment are met; and the technological process is simple, and the cost is low.

The invention relates to the technical field of titanium alloy machining, and particularly discloses a forging method for improving the macrostructure uniformity of a TC2 titanium alloy large-specification bar, which is realized through cogging forging, twice alpha + beta phase region remelting dynamic beta recrystallization forging, two-phase region upsetting and drawing forging and two-phase region drawing forging. The TC2 titanium alloy bar with the specification of phi 300-phi 400 mm prepared through the method is fine and uniform in macrostructure and meets the 1-5 grade of a macroscopic rating chart in the product standard, and the structure of a ring forge piece subjected to die forging through the bar is greatly improved and meets the standard requirement.

The invention relates to the field of forging processes, and discloses an efficient forging process for an output shaft shared by ship accessories and mining machinery, which comprises the following steps of: 1, simulating the stress condition of a mold by adopting finite element analysis through mold design and optimization, ensuring uniform stress of the mold, and avoiding mold wear and material segregation; secondly, the forging force and the deformation rate are precisely controlled through a numerical control forging machine tool, so that stable control over the forming precision of the forge piece is achieved; thirdly, a composite forging process is adopted, wherein the composite forging process comprises a pre-forging process and a precision forging process; 4, optimizing a heat treatment process; and 5, monitoring temperature, stress and deformation data in real time in cooperation with an intelligent temperature control and monitoring system. The forging force and the deformation rate are precisely controlled through the numerical control forging machine tool, the high consistency of the shape and the size of the forge piece in the forging process is guaranteed, error accumulation in the forging process is avoided, and the forming precision of the forge piece is improved.

The invention discloses fine-grain high-cleanliness steel for a harmonic reducer flexible gear of an industrial robot and a preparation method, and belongs to the technical field of metallurgy. The steel for the flexible gear comprises the following chemical components in percentage by mass: 0.38 to 0.42 percent of C, 0.20 to 0.30 percent of Si, 0.60 to 0.90 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 0.60 to 0.90 percent of Cr, 0.15 to 0.25 percent of Mo, 1.50 to 1.80 percent of Ni, 0.015 to 0.035 percent of Nb, less than or equal to 0.0006 percent of O and the balance of iron and inevitable impurity elements. The production method comprises the working procedures of vacuum induction furnace smelting, electroslag remelting, casting blank forging, bar heating, bar rolling and rolled material cooling. The steel for the flexible gear has fine austenite grains and high cleanliness, and the technical requirements of the steel for the harmonic reducer flexible gear of the industrial robot are met.

The invention belongs to the technical field of pipe fitting hot punching forging, and particularly relates to pipe fitting hot punching forging equipment which comprises a base, supports, temperature sensing type hot forging mechanisms and auxiliary type material moving mechanisms, the supports are symmetrically arranged on the upper wall of the base, the temperature sensing type hot forging mechanisms are arranged on the supports, and the auxiliary type material moving mechanisms are arranged at the two ends of the supports. The temperature sensing type hot forging mechanism comprises a rotary driving mechanism, a heating mechanism, a temperature guide mechanism, a limiting mechanism and a direct driving mechanism, the rotary driving mechanism is arranged on the side wall of the support, the heating mechanism is arranged on the rotary driving mechanism, the temperature guide mechanism is arranged on the upper wall of the support, the limiting mechanism is arranged on the side wall of the temperature guide mechanism, and the direct driving mechanism is arranged on the inner wall of the support. According to the hot punching forging equipment for the pipe fittings, the heating temperature of each group of metal blanks entering the forging furnace can be monitored in real time, and the quality of forged and formed workpieces is guaranteed.

The invention relates to the technical field of gear forging, and discloses a heat pipe type gear blank forging die which comprises a supporting rod, a machining table is fixedly connected to the top of the supporting rod, a pressing mechanism is arranged on the left side in the machining table, a movable feeding mechanism is arranged on the right side in the machining table, and a clamping mechanism is arranged at the back end of the machining table. The movable feeding mechanism comprises a moving assembly and a feeding assembly, the moving assembly is arranged on the right side in the machining table, the feeding assembly is arranged on the top of the moving assembly, the moving assembly comprises a supporting frame, and the supporting frame is fixedly connected to the bottom of the machining table. The first rack drives the second rack to move through the rotating gear, the second rack drives the push plate to move through the moving block, the push plate can drive the moving frame to move, the moving frame can drive the clamped blank to move to the top of the lower die, workers can conveniently feed the blank, the workers do not need to manually feed the blank, and the working efficiency is improved. The dangerousness is reduced.

The invention relates to the technical field of motor rotors, and discloses a motor rotor and a machining method thereof.The method comprises the steps that hot forging is conducted on an alloy steel base material based on the preset forging and pressing temperature, and multi-layer gradient cutting is conducted on a rotor initial blank; the method comprises the following steps: performing composite deposition treatment on a cylindrical blank based on a magnetic material, placing the magnetic composite blank in a vacuum environment for dynamic heat treatment, performing dynamic balance finishing on the heat treatment blank based on a preset alloy, performing surface strengthening treatment on a balance rotor in a nitrogen atmosphere, and coating the balance rotor subjected to surface strengthening with a preset coating, the motor rotor with the optimized surface is obtained; and dynamic balance trimming is combined with preset alloy characteristics for microstructure regulation and control, and it is ensured that the rotor has excellent operation stability in a high-rotation-speed environment. And finally, surface strengthening treatment is carried out in a nitrogen atmosphere, and a functional coating is used for covering, so that the wear resistance and corrosion resistance of the surface layer are remarkably improved, and the requirements of a motor system on a high-performance rotor under complex working conditions are met.

The invention relates to a free forging method for preparing an AAA nondestructive inspection grade large-specification TC4 alloy bar, and belongs to the technical field of titanium alloy hot working. According to the method, as-cast grains are fully crushed and refined through high-temperature and large-deformation forging in the cogging stage; high-low-high heating forging at the lower phase transformation point and the upper phase transformation point is used for promoting the high-temperature dynamic recrystallization process so as to homogenize crystal grains; the corner deformation dead zone is fully reduced through multi-heating-number diagonal drawing-out forging, and a U-shaped anvil is adopted in the forming stage to reduce metal flowing in all directions in the rolling stage. According to the free forging method for the large-specification TC4 alloy bar, the structure uniformity of the TC4 alloy bar can be improved, and the AAA-level nondestructive testing requirement is met.

The invention discloses a spinning forming method for a large-length-diameter-ratio variable-wall-thickness complex curved generatrix shell, and belongs to the technical field of metal pipe plastic machining. The specific process comprises the operation processes of blank size determination, primary machining, fixture and spinning roller determination, spinning forming, heat treatment and the like, the outer contour of a middle straight section is clamped, and then the two ends are subjected to hole shrinkage and thickening spinning. Through the machining mode that the two ends of the pipe are closed and subjected to die-free spinning, the defects and difficulties of common forging, extrusion and welding combined forming at present are overcome, the forming efficiency is improved, materials are saved, and the material utilization rate is high. Meanwhile, due to the fact that welding treatment is not conducted, heat treatment process operation is conducted finally, and the comprehensive mechanical property of a final finished product is more stable. The method is suitable for forming operation of various large-length-diameter-ratio variable-wall-thickness complex curved generatrix shells, and a reliable forming method can be provided for shell forming of spaceflight, weapons and the like.

The invention relates to the technical field of alloy steel, and particularly discloses ultrahigh-strength steel as well as a preparation method and application thereof. The ultrahigh-strength steel provided by the invention is prepared from the following chemical components in percentage by weight: 0.15 to 0.30 percent of C, 1.5 to 3.5 percent of Cr, 11.0 to 13.0 percent of Ni, 7.1 to 7.9 percent of Co, 1.8 to 2.5 percent of Mo, 0.8 to 1.3 percent of Al, 0.01 to 0.10 percent of Nb and the balance of Fe. The invention further provides a preparation method of the ultrahigh-strength steel. The preparation method comprises the following steps of vacuum induction melting, vacuum consumable remelting, forging and heat treatment. The heat treatment comprises solution treatment, subzero treatment and aging treatment. The ultrahigh-strength steel provided by the invention has excellent strength and toughness, and can meet the use requirements of new-generation engines on high-toughness power shaft materials.

The invention discloses a Ti55531 titanium alloy large-specification bar machining method. The method comprises the steps of cogging forging, intermediate forging and finished product forging. In the cogging forging process, the cast ingot alternately deforms at the temperature above and below the phase transformation point temperature, and beta grains are refined through static and dynamic recrystallization; and during recrystallization heating in the beta region, the temperature is controlled to be 30-50 DEG C above the phase transformation point so as to avoid excessive growth of beta grains. In the intermediate blank forging stage, controllable recrystallization annealing is added, and by controlling the forging temperature (15-25 DEG C below the phase transformation point), a part of primary alpha phase is properly reserved to limit rapid growth of beta crystal grains; through 2-3 times of'low + high 'circular forging at 40-60 DEG C and 15-25 DEG C below the beta transformation temperature, and in combination with beta-phase deformation recrystallization, the original beta grain size is remarkably refined, and the forging structure uniformity of a subsequent two-phase region is improved. The method for producing the Ti55531 titanium alloy large-specification (phi 350-600 mm) bar is advanced in process, short in preparation process, low in cost, good in product structure uniformity and high in batch stability.

The invention relates to the technical field of hinge beam forging, in particular to a hinge beam forging device and a forging method.The hinge beam forging device comprises a forging table, a plurality of second guide rods are fixed to the outer wall of the forging table, a lower lifting plate is arranged on the outer walls of the second guide rods in a sliding mode, and a motor is installed on the lower lifting plate; an output shaft is fixed to the output end of the motor, a fixing frame is fixed to one end of the output shaft, and a through groove is formed in the fixing frame. According to the forging device and method for the hinge beam, a motor continues to be started, so that a third guide rod and a third ball continuously knock the outer wall of a lower die when the lower die is separated and an opening faces downwards, and metal chippings adhered to the lower die due to forging are separated from the inner wall and fall to the outside; and when the lower mold is knocked, the metal scraps can be repeatedly vibrated to shake off the scraps on the inner wall.

The invention relates to the technical field of forging polishing, in particular to automatic forging polishing equipment which comprises a machine tool, a first sliding seat and a second sliding seat located on the left side of the first sliding seat are slidably mounted on the upper end face of the machine tool through a sliding rail, and an alignment mechanism is arranged on the first sliding seat. An alignment, bearing and grinding integrated operation model is adopted to complete automatic grinding operation on the surface of the half shaft, when the half shaft is ground, a grinding roller and an extrusion roller carry out stable three-point supporting on a grinding part of a shaft rod of the half shaft, and self-adaptive circumferential extrusion is carried out on the shaft rod along with the change of the grinding position, so that the surface of the half shaft is ground. Meanwhile, the spring telescopic rods are used for locking the positions of the grinding roller and the extrusion roller, a triangular stable structure is provided, the half shaft is effectively prevented from shaking and shifting, it is ensured that the pressure of the grinding roller is evenly distributed, the grinding quality and efficiency are remarkably improved, the surface roughness is reduced, the fatigue strength of the half shaft is improved, and the service life of the half shaft and equipment is prolonged; and the grinding automation degree and the production efficiency are improved.

The invention relates to the field of grinding equipment, and discloses a forging external grinding device which comprises a workbench, a moving mechanism is arranged on the workbench, a supporting seat is arranged on the moving mechanism, a coarse grinding wheel and a fine grinding wheel are rotationally connected to the supporting seat, and a grinding driving motor and a switching assembly are arranged on the supporting seat. The grinding driving motor drives the coarse grinding wheel or the fine grinding wheel through the first belt, and the switching assembly is used for switching the first belt to drive the coarse grinding wheel and the fine grinding wheel. The grinding device has the effects that the corresponding grinding heads can be conveniently and rapidly replaced according to the requirements of rough grinding and accurate grinding, the workload of workers is relieved, and the working efficiency is improved.

The invention discloses an intelligent control method and system for metal forging equipment, relates to the technical field of metal forging, and aims at monitoring the flowing state and the internal flowing resistance of a plastic blank in real time in the pressure applying process, so that an operator can adjust forging parameters in time, and the phenomenon of insufficient flowing or excessive flowing is further avoided. On the basis of the heat flow density and the pressure change data in the mold, the full-cavity evaluation coefficient Mgz is calculated in combination with the prediction model, so that whether the plastic blank fills the whole mold cavity or not can be accurately judged, experience judgment in a traditional method is further avoided, and the scientificity of evaluation is improved. By performing laser scanning and difference coefficient calculation on the surface of the formed metal forge piece, surface defects such as oxide skin and the like can be effectively identified and treated, so that the surface smoothness and the mechanical property of the forge piece are improved. And continuously performing process optimization according to the surface difference coefficient Bcxs to form a closed-loop feedback mechanism.

The invention is applicable to the technical field of titanium alloy pipe processing, and particularly relates to a preparation method of a high-plasticity TA15 titanium alloy pipe, which comprises the following steps: step S1, selecting sponge titanium, pure metal and intermediate alloy, preparing according to standard components of TA15 titanium alloy to obtain a prepared raw material, and smelting the prepared raw material for three times by adopting a vacuum consumable smelting furnace to obtain a high-plasticity TA15 titanium alloy pipe; and the TA15 titanium alloy cast ingot with the diameter being 600 mm is obtained. According to the method, the mechanical property and plasticity of the titanium alloy pipe are remarkably improved by accurately controlling the temperature and deformation of each machining step. And three-time upsetting and three-time drawing forging is carried out within the temperature range of T beta or above, coarse grains are effectively crushed, and grain structures are refined. And then, the metallographic structure of the wool rod is gradually optimized by accurately controlling the forging temperature and the deformation amount.

The invention relates to the technical field of valve machining, and discloses an auxiliary machining device for valve blank forging and a using method thereof.The auxiliary machining device comprises a forging table, a motor is fixedly connected to the side wall of the forging table, a swing rotating rod is rotatably connected to the inner wall of the forging table, and a forging block is slidably connected to the inner wall of the forging table; a servo motor is started to drive a gear rod to rotate, a gear ring is made to rotate, a fixing frame is made to rotate, balls on the top of a spring pressing plate are made to make contact with the inclined face of an inclined face ring, the spring pressing plate descends to extrude gas in the fixing frame, and the gas rises under extrusion pressure till high-pressure gas can push a piston push rod to move and drive a spring clamping block to move; the blank is located in the center of the forging table through cooperative pushing of the three spring clamping blocks, the blank is driven to rotate through application of the assemblies, the clamping force on the blank can be reduced when the blank is forged, and the situation that the size of the blank is affected due to the fact that the clamping force on the blank is too large is effectively prevented.

The invention discloses forging machining equipment and a forging machining method, and belongs to the technical field of forging machining. The forging machining equipment comprises a rack, a machining mechanical arm is arranged on the rack, the forging machining equipment further comprises a working ring, a first connecting block is arranged between the working ring and the rack, a positioning seat is arranged in the working ring, and a second connecting block is arranged between the working ring and the positioning seat; the discharging opening is formed in the middle of the positioning seat, and a plurality of supporting blocks are evenly arranged in the discharging opening in the circumferential direction; the clamping mechanism comprises a plurality of clamping assemblies and a driving assembly, the clamping assemblies are circumferentially and uniformly arranged on the working ring, and the driving assembly is arranged on the working ring and used for driving the clamping assemblies to work; according to the device, various irregular forgings can be conveniently and rapidly clamped and positioned, the clamping effect is guaranteed, so that the working efficiency and machining precision of the forgings are improved, meanwhile, the machined forgings can be rapidly replaced and blanked, the operation steps of workers are reduced, and the machining efficiency of the forgings is further improved.

The invention discloses a billet internal defect classification method, system and device based on PSO-SVM, and the method comprises the steps: S1, collecting billet internal ultrasonic signal data, and carrying out the preprocessing; s2, inputting the preprocessed data into a pre-trained defect classification model for identification; wherein the defect classification model comprises a particle swarm algorithm and a support vector machine; and S3, outputting a billet internal defect type identification result. The method is suitable for flaw detection of the continuous casting billet, is a more accurate internal flaw detection identification method, provides acceptable improvement measures for production of forgings, and is beneficial to quality control of the forgings.

The invention discloses a steel pipe forging device with a positioning mechanism, which relates to the technical field of steel pipe forging and comprises a mounting frame, a core anvil, the positioning mechanism and a pneumatic hammer. And a component force forging mechanism for changing the forging direction of the pneumatic hammer is arranged on the mounting frame. The component force forging mechanism is arranged, kinetic energy provided by the pneumatic hammer is dispersed to the forging hammer, in the kinetic energy transmission process, under the condition that kinetic energy loss is reduced to the maximum degree, forging work is achieved, the kinetic energy loss is reduced, and the forging strength and precision are guaranteed; through cooperation with the first linkage mechanism, downward force applied by the pneumatic hammer is converted into rotating force, the mounting ring is pushed to generate large torque, then large force can be provided for pushing the forging hammer to move, and the forging effect is guaranteed; and by arranging the buffering mechanism, the reverse acting force borne by the rotating rod and the second connecting rod is buffered, and the situation that the rotating rod and the second connecting rod are deformed due to stress, and the next forging work is affected is prevented.