368results about "Extrusion dies" patented technology

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

The invention discloses a multi-cavity aluminum alloy battery pack shell extrusion-bending process optimization method, and relates to the technical field of aluminum alloy machining. According to the method, 6000 series aluminum alloy serves as a base material, and the problems of cracking, resilience, section deformation and uneven performance of a profile in the traditional process are solved through the six-step core process of compound trace element regulation and control, gradient heating ingot casting, PID temperature control extrusion, segmented quenching temperature control, multi-roller cooperative bending and online structure monitoring. The strength and plasticity of the alloy are improved through Mn / Zr or Cu / Ag composite microalloying, extrusion-bending continuous forming and real-time grain boundary migration and dislocation density monitoring are combined, and the multi-cavity structure size precision (the broad side error is + / -1.87 mm, and the narrow side error is + / -0.40 mm) and the mechanical property (the tensile strength is larger than or equal to 200 MPa, and the percentage elongation after fracture is larger than or equal to 8%) both reach the standard. The process shortens the processing period by more than 30%, improves the material utilization rate to 92%, is suitable for large-scale mass production of new energy automobile battery pack shells, and provides key technical support for automobile lightweight.

The application relates to a torsion extrusion device and method for enhancing torsion shear effect, which comprises an extrusion cylinder for arranging a blank to be extruded; a movable extrusion punch mounted in the extrusion cylinder and used for extruding the blank; and a multi-stage cavity rotary die connected with the extrusion cylinder and comprising a circular cross-section conical cavity, a first transition cavity, a wavy cross-section straight cavity, a second transition cavity and a circular cross-section straight cavity which are connected in sequence and integrally formed. Compared with the prior art, the application can solve the problem of slip in the torsion extrusion process and make the torsion deformation zone and the extrusion deformation zone of the material coincide, so as to enhance the torsion shear effect and realize good grain refinement effect.

The invention discloses an online temperature control device for an aluminum alloy profile extrusion die, and relates to the technical field of aluminum alloy profile extrusion devices, and the online temperature control device comprises a base, a movable workbench, a die conveying assembly, a heating element and a temperature control assembly. According to the online temperature control device for the aluminum alloy profile extrusion die, the full-automatic process of heating and heat preservation of the movable die is achieved, the overall time of temperature control and die replacement of the movable die is shortened, the safety and continuity of the production process are improved, and the production efficiency is improved through wrapping of the heat preservation cover and cooperative work of the heating element and the auxiliary heating element. Due to real-time feedback regulation and control of the temperature detection element and the PLC control system, the temperature of the movable mold can be stably maintained within the range required by the process, and the problems of profile surface defects, dimensional precision deviation and the like caused by temperature fluctuation of the movable mold are effectively avoided; and the product quality consistency of the aluminum alloy section is obviously improved.

The asymmetric hollow profile extrusion forming device comprises an extrusion wheel, a male die and a female die, the female die comprises a feeding port, an expansion cavity, a containing cavity and a forming notch which are sequentially communicated, and a blank is guided to flow towards the containing cavity through the expansion cavity; the male die comprises a flow dividing assembly and a core rod, the flow dividing assembly is movably connected into the expansion cavity, a flow dividing top end used for dividing the blank at the starting end of the expansion cavity is formed at the top of the flow dividing assembly, and the dividing point position, corresponding to the feeding port, of the flow dividing top end is adjustable, so that the dividing proportion of the blank divided by the flow dividing top end can be adjusted; one end of the core rod is used for being matched with the inner side wall of the forming notch to form a forming channel of the hollow profile. By the adoption of the single-rod feeding mode, machining of the asymmetric hollow profile can be completed only by locally adjusting the position of the flow dividing assembly and not adaptively modifying the whole machining system according to different machining specifications every time, the equipment cost is effectively reduced, and the machining efficiency is improved.

The invention discloses an extrusion method of a regenerated aluminum profile with a complex section, and relates to the technical field of aluminum profile processing, and the extrusion method comprises the following operation steps: S1, raw material pretreatment: crushing waste aluminum subjected to impurity removal to form aluminum particles, and cleaning the aluminum particles by using a sodium hydroxide solution with the mass concentration of 5-8% at the temperature of 50-60 DEG C for 15-20 minutes; according to the extrusion method for the regenerated aluminum profile with the complex section, various impurities in waste aluminum are effectively removed through a manual and mechanical combined sorting mode in cooperation with multiple impurity removal technologies such as magnetic separation, eddy current separation and wind power separation, and then standardized treatment such as crushing, alkali washing and drying is conducted, so that efficient recycling of regenerated aluminum resources is achieved, resource waste is reduced, and the production cost is reduced. And a clean and uniform raw material basis is provided for subsequent procedures, profile defects caused by impurity residues are avoided from the source, and the raw material utilization rate and the product percent of pass are increased.

The invention relates to the technical field of aluminum alloy profiles, and discloses a preparation method of an aluminum alloy profile for a battery pack structure, which comprises the following steps: step S1, on the basis of alloy components and high-temperature fluidity characteristics of aluminum alloy, the distribution of shunting holes of an extrusion die is designed through finite element simulation optimization, so that the distribution of the shunting holes is matched with the section shape of the profile; s2, the optimized mold is used for isothermal extrusion forming of molten aluminum alloy, extrusion is conducted under the constant-temperature condition, and a primary profile blank is formed; s3, through differentiated welding chamber depth design, the flow velocity and the filling uniformity of metal in all the areas are controlled; and S4, the formed profile is subjected to heat treatment. According to the method, the flow uniformity of metal in the extrusion process is remarkably improved through the optimal design of the die flow dividing holes based on finite element simulation and a fluid dynamic model in combination with curve fitting of the depth of the differential welding chamber and the profile section contour.

The application discloses a method for prolonging the service life of an aluminum alloy extrusion die and improving the forming precision of a profile, and relates to the technical field of metal plastic working.The specific steps of the method are as follows: finite element simulation analysis, stiffener design and forming, material selection and treatment, surface strengthening and assembly treatment, and cooling circuit processing.The application comprehensively predicts the stress distribution of the aluminum alloy extrusion die in the working process through the finite element simulation analysis technology, and innovatively designs an asymmetric stiffener structure.The structure is customized according to the stress direction and gradient of the stress concentration area, and the asymmetric stiffener effectively breaks the stress transmission path of the traditional symmetric stiffener through the unique radial offset and staggered angle design, thereby realizing the redistribution and accurate dispersion of the stress field.The design not only reduces the stress peak value of the key area of the die, but also improves the fatigue resistance of the whole die, thereby effectively prolonging the service life of the die.

The application belongs to the field of magnesium alloy processing and relates to a device and method for preparing fine-grained magnesium alloy pipe by reciprocating radial extrusion. The technical scheme comprises a first power mechanism, a second power mechanism, an extrusion outer die and an extrusion inner die. The first power mechanism comprises a first extrusion ring, the second power mechanism comprises a second extrusion ring, and the first extrusion ring and the second extrusion ring have a tendency to reciprocate in a first direction. The extrusion outer die comprises a through hole and is arranged between the first extrusion ring and the second extrusion ring, the extrusion outer die is connected with the first power mechanism, and the first power mechanism drives the extrusion outer die to rotate around the center line thereof when the first extrusion ring operates. The extrusion inner die is arranged in the through hole and is connected with the second power mechanism, and the second power mechanism drives the extrusion inner die to rotate around the center line thereof when the second extrusion ring operates. The application can extrude and twist the inner wall of the magnesium alloy pipe, so that the magnesium alloy pipe generates extrusion deformation, twisting and shearing deformation, and the magnesium alloy pipe grain is further refined.

The invention discloses a one-step extrusion-cutting preparation method and device for fins between grooves in two sides. The device is composed of a main half die, an auxiliary half die, an upper extrusion block, a lower extrusion block, a stamping die and a taking-out mechanism, the upper extrusion block and the lower extrusion block are each provided with a groove-shaped forming cavity and an inter-groove fin forming area, and an input channel, a transverse channel and an output channel are formed after the main half die and the extrusion blocks are assembled. In the machining process, a stamping die pushes a workpiece to move downwards along an input channel under the action of an external load, and a workpiece material is sheared-shunted at a cutting edge of a lower extrusion block and enters a transverse channel under a constraint condition; and then the upper groove-shaped forming cavity, the lower groove-shaped forming cavity and the inter-groove area are sequentially filled with the material under the extrusion effect, and therefore inter-groove fin structures are formed on the upper side and the lower side of the workpiece at the same time. And after forming is completed, demolding of the extrusion block is achieved through the taking-out rod and the T-shaped taking-out rod. Cooperative forming of cutting, flow dividing, extruding and filling can be achieved in the single pressing process, symmetric or asymmetric fins between grooves in the two sides can be obtained, the structural integrity is high, the forming consistency is good, the method is suitable for rapid machining of various plastic metals, and fin structures of multiple specifications can be prepared by replacing the extruding blocks.

This utility model provides an integrated device for anti-deviation positioning and quick replacement of H13 steel extrusion rods, relating to the field of extrusion die technology. It includes a main board with a movable frame inside, a movable block inside the movable frame, and a moving structure for driving the movable block to move in multiple directions. The operation of a second motor drives a bidirectional screw to rotate, causing two connecting plates to move towards or away from each other under the limitation of a second limiting post. This, in turn, causes two locking plates connected to the two connecting plates to move towards or away from each other. When the two locking plates move towards each other, they engage with openings in the outer wall of the extrusion rod body, thus clamping and installing the extrusion rod body, making installation and removal faster. Furthermore, when the two connecting plates move towards each other, they simultaneously drive two brackets to move towards each other, thereby causing two stabilizing plates to move towards each other, further limiting the position of the extrusion rod body and achieving an anti-deviation effect.

The invention belongs to the technical field of aluminum profile manufacturing, and particularly relates to an aluminum profile extrusion die rapid replacement industrial robot workstation which comprises containing bins arranged at the top of an AGV die replacement trolley in pairs, and the containing bins measure the distance of a die in real time through laser measurement and control assemblies and drive the containing bins to move. The limiting block is used for adapting to and constraining molds with different sizes; the size of the mold is measured in real time through the laser distance measuring sensor, the containing bin is driven to drive the double-cone limiting wheel to apply self-adaptive lateral constraint from the two sides, molds of different sizes are matched, the high-frequency mold changing production requirement is met, inertial offset of the mold in the moving process is restrained, and accurate butt joint of an extruding machine is guaranteed; the containing bin rotates to drive the second baffle to synchronously turn over to the feeding and discharging side of the die, four-direction limiting is jointly formed by the second baffle, the induction type limiting plate, the limiting wheels and the like, the horizontal position of the die is guaranteed in the transferring process, the hidden danger that the die slides or falls is avoided, and the butt joint precision of the follow-up die is guaranteed.

The invention relates to the technical field of extrusion dies, in particular to a high-strength aluminum alloy extrusion die temperature compensation system which comprises a divergent die, a die holder and a die body, a plurality of divergent bridges are arranged on the divergent die, a die core is arranged in the middle of the divergent die, the divergent bridges are all connected with the die core, and the die holder is coaxially connected to the front end face of the divergent die through bolts; the water pressing groove is formed in the front end of the die holder, the section of the water pressing groove is designed to be in the frustum shape, and cooling liquid entering the water pressing groove flows from the front end to the rear end, so that the cooling effect on the front end of the forming part is higher than that of the rear end, and the situation that the extrusion forming speed of a high-strength aluminum alloy profile is affected due to temperature reduction is avoided; and meanwhile, the problem that the strength of the high-strength aluminum alloy profile is reduced due to the fact that the grain structure in the high-strength aluminum alloy is suddenly changed due to temperature suddenly changing of the high-strength aluminum alloy profile in the extrusion direction is solved, the physical property of the profile is guaranteed, and meanwhile the surface quality of the profile is guaranteed.

The invention discloses an aluminum profile extruding machine and a using method thereof, and belongs to the technical field of aluminum profile extruding machines, the aluminum profile extruding machine comprises a forming assembly installed on the extruding machine, the forming assembly comprises a containing cover for containing materials, and an extruding assembly for extruding the materials is installed on the side, away from a discharging opening, of the interior of the containing cover; the extrusion assembly comprises a piston plate slidably mounted in the containing cover, a hydraulic rod is fixedly mounted at the end, away from the discharging port, of the piston plate, and a partition plate is mounted at the position, between the discharging port and the piston plate, in the containing cover. According to the aluminum profile extrusion device, materials can be continuously extruded out of the discharging port, the materials can be automatically supplemented into the containing cover in the extrusion process, the situation that shutdown is needed for feeding is avoided, the situation that due to the fact that the materials are interrupted, the aluminum profile is broken or the connecting position is not firm is avoided, and the production efficiency of the aluminum profile is effectively improved.

The utility model discloses a thin-wall multi-cavity building profile extrusion die, and relates to the field of extrusion dies. The mold comprises a divergent mold body and a forming mold body, the divergent mold body and the forming mold body are fixed in an inserted connection mode through an inserted connection mechanism, the inserted connection mechanism comprises a plurality of inserted connection pieces, the inserted connection pieces are fixedly connected with the divergent mold body, and thermal expansion pieces are fixedly clamped on the inner sides of the inserted connection pieces. A plurality of inserting pieces in the inserting mechanism are fixedly connected with the divergent die, thermal expansion pieces are clamped on the inner sides of the inserting pieces, self-locking is achieved in the extrusion and temperature rise process by means of the characteristic that the thermal expansion coefficient of the thermal expansion pieces is higher than that of other components, and by means of the thermal expansion fixing mode, the connection stability of the die is improved, and the die can be conveniently assembled and disassembled. And the pressure is effectively dispersed, and the condition of stress concentration is avoided.

The utility model relates to the technical field of extrusion dies, and discloses an extrusion die for processing aluminum alloy sections, which is characterized in that a fixed part and a fastening part are fixedly arranged on the inner walls of the two sides of the top of a bottom plate respectively, the fastening part is positioned on the outer side of the fixed part, movable frames are mounted at the top ends of the fastening part, and clamping blocks are arranged at the ends, close to each other, of the two movable frames; a sliding groove is formed in the upper surface of the movable frame, the fixing piece is connected to the inner wall of the sliding groove in a sliding mode, the fixing piece is sleeved with a pressure spring, and the pressure spring is located between the movable frame and the bottom plate. Through the arrangement of the clamping blocks and the compression springs, the position of the linkage plate is adjusted through the sliding rails, so that the clamping blocks clamp the two sides of the linkage plate under the action of the compression springs, primary blank fixing is completed, the clamping blocks loosen the linkage plate under the elastic restoring force of the compression springs, meanwhile, the tension springs pull the mounting blocks to reset to the initial position along the sliding rails, and finished products can be taken out conveniently and prepared for the next cycle; and the machining efficiency of the die is improved.

The present disclosure provides a shear assisted extrusion press comprising a stem and plunger assembly comprising a main piston configured to generate an extrusion force, a stem assembly comprising a stem having a first end and a second end, wherein the second end connects to a rotary piston that connects to the stem and plunger assembly, wherein the main piston exerts the extrusion force on the stem such that the stem moves axially, and at least one piston motor coupled with the stem and configured to drive a rotational movement of the rotary piston and the stem, and a container assembly comprising a container holder, a container configured to receive a billet and the first end of the stem, and at least one hydraulic motor positioned in the container holder with the container, wherein the at least one hydraulic motor is configured to drive a rotational movement of the container.

The invention provides a radial diameter-reducing extrusion cold rolling process for stator production, and relates to the technical field of screw drill stator processing, which comprises the following steps: S100, coaxially sleeving an inner core shaft with spiral bulges distributed on the peripheral wall in an inner die cavity of an outer die cylinder, and enabling the outer diameter of the inner core shaft to be smaller than the inner diameter of a stator tube blank; an annular rolling space used for containing and rolling a stator tube blank is formed between the inner mandrel and the side wall of the inner die cavity, the two axial ends of the rolling space are a rolling inlet and a rolling outlet respectively, the outer diameter of the rolling inlet is larger than that of the stator tube blank, and the outer diameter of the rolling outlet is smaller than that of the stator tube blank. The thickness of the radial section of the rolling space is gradually reduced from the rolling inlet to the rolling outlet; s200, performing radial extrusion on the stator tube blank through the outer die cylinder; and S300, the inner core shaft is driven to rotate, the inner wall of the stator pipe blank is spirally machined, metal of the stator pipe blank is guided to plastically flow to achieve shape forming, no redundant metal is ground or removed or corroded, and energy is saved.

The invention discloses a Roots twisted blade rotor rotating rolling machining device, and relates to the technical field of mechanical plastic forming, the Roots twisted blade rotor rotating rolling machining device comprises a workbench, a motor support is installed on one side of the upper surface of the workbench, a motor is installed on the upper surface of the motor support, and the working end of the motor is in transmission connection with the input end of a speed reducer; a mold system is installed in the middle of the upper surface of the workbench, and the output end of the speed reducer is in transmission connection with the mold system. A clamp feeding system is slidably mounted on the other side of the upper surface of the workbench. The cavity center of the die system, the clamping center of the clamp feeding system and the output end of the speed reducer are located on the same axis. According to the rotary rolling machining device for the Roots twisted blade rotor, efficient near-net forming of the Roots twisted blade rotor is achieved, and the rotary rolling machining device has the advantages of being high in material utilization rate, good in product mechanical performance, high in precision consistency and easy to produce automatically.

The invention discloses hot forming equipment with a side ejector rod. The hot forming equipment comprises a main machine frame, a hydraulic system, an upper heating platform, a furnace door assembly, a side ejector rod assembly, a lower heating platform and a hydraulic sliding block. The hydraulic system is mounted at the upper end of the host frame, and a hydraulic main cylinder of the hydraulic system extends to the middle of the host frame through a through hole in the upper end of the host frame and is connected with the hydraulic slider; the upper heating platform is in threaded connection with the hydraulic sliding block; the lower heating platform is screwed at the lower end of the host frame; the furnace door assembly is in threaded connection with four stand columns of the main machine frame. The side ejector rod assembly is installed on the furnace door assembly. According to the hot forming equipment with the side ejector rod, the side ejector rod is designed, so that the hot forming equipment can meet more process requirements, machined parts and molds can be movably positioned in the vertical direction and can also be movably positioned in the horizontal direction in the heating forming process, the functionality of the hot forming equipment is guaranteed, and the hot forming efficiency is improved. And on the premise that heating work is not stopped, the process diversity of the hot forming equipment is greatly improved.

The utility model discloses a backward extrusion device of a motor shaft, which comprises an upper template and a lower template which are oppositely arranged up and down, the top surface of the lower template is fixedly connected with a lower die holder, the top surface of the lower die holder is provided with a forming core hole along the vertical direction, the bottom surface of the upper template is fixedly connected with a guide holder, and the guide holder is provided with a guide hole along the vertical direction in a penetrating manner. A forming mold core which is arranged on the same center line with the forming core hole is fixedly connected to the position, located on the inner side of the guide hole, of the bottom face of the upper mold plate, the bottom of the forming mold core extends downwards to form a forming core column, and the diameter of the forming core column is smaller than that of the forming mold core. The upper end of the lower die base can stretch into the guide hole and can be in sliding fit with the guide hole in the vertical direction, and the forming die core and the forming core column can stretch into the forming core hole to conduct extrusion forming on a to-be-machined shaft blank. According to the utility model, the blank with the shape close to that of a finished product can be processed, so that the material cost is reduced, and the subsequent processing efficiency is improved.

The utility model relates to the technical field of extrusion dies, and discloses an aluminum alloy extrusion forming die convenient to position. A lower die is fixedly connected to the middle of the upper end of a base, a positioning clamping cavity is formed in the upper end of the interior of the lower die, an extrusion cavity is formed in the bottom of the inner wall of the lower die, and an annular groove is formed in the upper end of the interior of the lower die; under the cooperation of the magnetorheological fluid in the annular groove and the electromagnet, the principle that the viscosity of the magnetorheological fluid changes under the action of a magnetic field is utilized, after the electromagnet is powered on, the magnetic field is generated, the viscosity of the magnetorheological fluid is increased under the action of the magnetic field, and the magnetorheological fluid is converted into a semi-solid state with certain rigidity from a liquid state. The magnetorheological fluid with the constant volume generates pressure on the periphery, the dovetail block is pushed to slide in the dovetail groove, then the arc-shaped positioning piece is driven to move towards the inner side, automatic clamping and positioning of aluminum alloy blanks of different specifications are achieved, therefore, the positioning time is greatly shortened, and the production efficiency is remarkably improved.

The invention relates to the technical field of aluminum profile hot extrusion dies, in particular to an anti-deformation aluminum profile hot extrusion double-die-core structure and a using method thereof.The anti-deformation aluminum profile hot extrusion double-die-core structure comprises a die body, flow dividing cavities are formed in the two sides of the interior of the die body, and double-die-core assemblies are installed in the flow dividing cavities through flow dividing bridges and located on the back face of the die body; a first connecting cavity and a second connecting cavity are formed in two sides of the back of the die body; a contact cavity is formed in the middle of the back of the die body; the double-mold-core assembly comprises a contact piece, positioning pieces are integrally formed at the two ends of the contact piece, the positioning pieces are embedded in the ends of the first connecting cavities, and the two sides of the outer walls of the positioning pieces are elastically connected with limiting pieces through mounting grooves. The cold liquid conveying piece enhances heat exchange, takes away heat, avoids heat accumulation, and improves the deformation resistance of the mold core.

The present application belongs to the field of light metal plastic forming, and particularly relates to a device and method for preparing fine-grained magnesium alloy rod by asymmetric multi-directional shear extrusion. The wedge block combination in the present application can combine multi-directional shear extrusion deformation and differential speed torsional deformation, effectively weaken the magnesium alloy basal plane texture, and improve the mechanical properties of the magnesium alloy. While the magnesium alloy material is subjected to torsional extrusion in the torsional extrusion deformation zone, the sectional area of the channel gradually decreases, and the angle of the channel deflection is different, so that the frictional force of the magnesium alloy material on the surface of the convex and concave dies at the contact position is different, and the degree of torsional deformation is also different, so that the material realizes differential speed torsional deformation, and the grain refinement effect of the magnesium alloy rod is more remarkable. When the magnesium alloy material passes through the large and small concave dies, the deformation degrees of the magnesium alloy material are different due to the particularity of the structure, so that the grain refinement is effectively realized. At the same time, the flowability of the magnesium alloy material is also different, causing differential speed flow to deflect the c-axis, thereby weakening the texture.

The invention discloses a hot forging and composite cold extrusion forming process for a thin combined tooth ring. The hot forging and composite cold extrusion forming process comprises the following steps: feeding a pipe material; the pipe material is heated and upset into an annular blank; punching an assembly hole; the punched annular blank is subjected to precision forging, and a gear ring forming part is formed; performing radial extrusion on the gear ring forming part by adopting a combined extrusion die, so that each straight tooth on the gear ring is extruded to form an inverted conical tooth; and turning off excess materials of the radially extruded molded part according to design requirements. The pressing male die used for being matched with the upper end of the gear ring forming part in an abutting mode is elastically installed on the upper die of the combined extrusion die, the pressing male die can be always in abutting fit with the upper end of the gear ring forming part in the extrusion process, the gear ring forming part is positioned, the tooth profile extrusion stability is effectively guaranteed, and the product forming rate is increased.

The present application relates to the technical field of metal pressure processing, and discloses an extrusion method for recycled aluminum alloy profiles for anodic oxidation and electrophoretic spraying, which comprises the following steps: adding strontium and boron into recycled aluminum melt, controlling the mass ratio with iron, forming an interface enrichment layer with shear sensitivity on the surface of the iron-containing impurity phase by using strontium; establishing an ingot axial temperature gradient, and controlling the average equivalent strain rate in the extrusion process to be maintained in the critical rheological interval, and physically activating the interface enrichment layer to produce shear thinning; and implementing online gradient freezing quenching after the profile leaves the die. Through the synergy of the critical strain rate and the interface modification, the present application builds an in-situ lubricating layer between the hard impurity phase and the aluminum matrix, eliminates the microscopic tearing caused by the rheological mismatch, and solves the color difference problem of the recycled aluminum surface treatment.

The utility model provides an extrusion die with a quick die changing structure, which relates to the technical field of extrusion dies and comprises a bottom plate and a supporting seat arranged on the bottom plate, and the extrusion die is arranged on the supporting seat. When the height of the supporting plate needs to be adjusted, the position of the supporting plate is changed by controlling the first electric push rod, so that the fixing assembly is driven to ascend or descend, and the fixing assembly drives the moving block to slide along the moving rod through the second electric push rod, so that the first rotating rod rotates; meanwhile, the rack is meshed with a second gear, so that the second gear rotates, when the second gear rotates, a second rotating rod is driven to rotate together, a first limiting block rotates along with the second rotating rod, and a limiting groove in a second limiting block is used in cooperation with the first limiting block; it is ensured that the extrusion die is kept stable and immovable in the working process, rapid die replacement of the extrusion die is achieved, and the production efficiency and the product quality are improved.

The invention relates to the technical field of high-purity metal sputtering target materials, in particular to an ultra-fine grain high-purity tantalum target blank and a preparation method thereof. The preparation method of the ultra-fine grain high-purity tantalum target blank comprises the following steps that an extrusion die with a gradient die hole length-diameter ratio is adopted for conducting a multi-round extrusion process on a high-purity tantalum cast ingot, the high-purity tantalum cast ingot obtained after each round of extrusion is subjected to vacuum annealing, and the high-purity tantalum target blank is obtained; carrying out a cold rolling process on the high-purity tantalum target blank; and carrying out vacuum graded annealing on the tantalum blank subjected to the cold rolling process. According to the preparation method of the ultra-fine grain high-purity tantalum target blank, through precise cooperation of a series of innovative processes, the ultra-fine grain high-purity tantalum target blank which is finer and even in distribution compared with a conventional process is obtained.

The invention discloses a metal extrusion and expansion forming device and method based on extrusion and rotary expansion combination and a product, and belongs to the technical field of metal plastic processing. The device comprises an extrusion system, an expansion forming system, a transition ring, a cutting system and a control system. The core of the method is as follows: after a metal casting blank is positively extruded by an extrusion die, the metal casting blank is immediately subjected to diameter expansion and extension deformation on the surface of a forming core die which is coaxially arranged to form a continuous product blank; single products are separated through fixed-length cutting, the core mold is moved to take out the products, and circulating production is achieved. And the forming core mold can be fixed or rotated. Short-process, near-net-shape and semi-continuous production from casting blanks to complex parts (such as conical parts and corrugated pipes) is achieved, and the method has the advantages of being high in performance, high in efficiency and low in cost and is a great innovation for a traditional spinning technology.

The present disclosure provides a shear assisted extrusion press comprising a stem and plunger assembly comprising a main piston configured to generate an extrusion force, a stem assembly comprising a stem having a first end and a second end, wherein the second end connects to a rotary piston that connects to the stem and plunger assembly, wherein the main piston exerts the extrusion force on the stem such that the stem moves axially, and at least one piston motor coupled with the stem and configured to drive a rotational movement of the rotary piston and the stem, and a container assembly comprising a container holder, a container configured to receive a billet and the first end of the stem, and at least one hydraulic motor positioned in the container holder with the container, wherein the at least one hydraulic motor is configured to drive a rotational movement of the container. The rotary piston and the stem are configured to rotate and move axially such that the stem moves the billet through the container to extrude a part, and the container and the billet are configured to rotate together while the container does not move axially.