283results about "Extrusion control devices" patented technology

The invention discloses an extrusion production process for an aluminum alloy multi-cavity profile. The extrusion production process comprises the following steps that S1, raw materials are prepared; s2, designing and manufacturing a mold; s3, pretreatment before extrusion; s4, extrusion forming; s5, cooling treatment; s6, straightening and finishing; s7, aging treatment; and S8, detecting and packaging. According to the invention, the friction is further reduced by adopting a special high-temperature lubricant and an ultrasonic vibration device in the pre-extrusion pretreatment, the precise control is realized by arranging real-time monitoring and feedback systems such as a laser range finder and an infrared thermometer in the extrusion forming process, and the cooling treatment is realized by automatically adjusting parameters by adding a corrosion inhibitor and arranging a sensor, so that the production efficiency is improved. The cooling quality of the profile is ensured; laser scanning and electrolytic polishing technologies are adopted for straightening and finishing, the straightening precision and the surface quality are improved, a circulating hot air system and a segmented aging mode are adopted for aging treatment, and the aging effect is improved.

The invention relates to an intelligent management method and system for an aluminum profile extrusion conveying production line, and the method comprises the following steps: monitoring a multi-station equipment parameter, and obtaining an aluminum profile production process parameter; performing thermal-mechanical coupling analysis on the aluminum profile based on the aluminum profile production process parameters to obtain an aluminum profile rheological characteristic vector; performing quality correlation mapping on the aluminum profile based on the rheological characteristic vector of the aluminum profile to obtain an aluminum profile quality prediction parameter; when the aluminum profile quality prediction parameters are not in a preset target quality parameter range, cooperative control strategy generation is carried out on the station devices based on the aluminum profile quality prediction parameters, and multi-station cooperative control parameters are obtained; and through the multi-station cooperative control parameters, the production line equipment is driven to carry out closed-loop cooperative control on the aluminum profile, so that the technical problems that the control strategy is lagged and the deviation cannot be corrected in time due to the lack of a quality prediction and feedback regulation mechanism based on real-time data are solved.

The invention relates to an intelligent control method and system for extrusion forming of an aluminum profile, and the method comprises the following steps: carrying out acoustic emission sensor array measurement and preprocessing on a mold inlet region of the aluminum profile in an extrusion process, and obtaining a preprocessed acoustic emission signal sequence; performing time-frequency domain energy distribution analysis on the acoustic emission spectrum to generate an acoustic emission energy spectrogram; carrying out material flow stability analysis based on the spectrogram to obtain a flow analysis result; if the flow instability degree exceeds the target stability range, multi-constraint optimization calculation is conducted on the main cylinder pressure and the extrusion speed based on the analysis result, and optimization control parameters are obtained; and finally, closed-loop feedback control is performed on the extruder through a distributed PID controller, so that the material flow stability is kept in a target range, intelligent high-precision forming control is realized, and the problem that in the traditional extrusion process, the material flow stability is often influenced by factors such as the extrusion speed, the main cylinder pressure and the mold design is solved. And a flow instability phenomenon is easy to occur.

The invention particularly relates to an aluminum profile straightening machining method with an aluminum bar as a raw material, and relates to the technical field of aluminum profile machining. Extruding and forming; determining a straightening scheme; and precision detection. According to the method, a whole-process quality control system is constructed from raw material pretreatment to post-treatment storage; the straightening scheme depends on characteristic parameterization to accurately adjust pressure, match pressure maintaining and release stress in a targeted mode, and the problem of stress concentration of the special-shaped section is solved. Precision detection covers multi-dimensional form and location tolerances and defects, and data are fully traced, so that support is provided for quality closed-loop management and control; surface protection and storage are standardized through post-treatment, and performance degradation is prevented; the whole process is coordinated, the straightness, the stress uniformity and the size precision of the aluminum profile are greatly improved, and the requirements of the high-end field for high-quality profiles are met.

The invention discloses an extrusion forming device and method, the extrusion forming device comprises an extrusion container assembly, a mold assembly and an extrusion assembly, the extrusion container assembly is provided with at least two mutually independent blank cavities, and the cross section of at least one blank cavity is non-circular; the mold assembly comprises a gradual change type flow channel structure, a welding chamber structure and a mold outlet structure, the gradual change type flow channel structure comprises at least two mold flow channels, and the inlet ends of the at least two mold flow channels are in butt joint with the outlet ends of the at least two blank cavities in a matched mode; the at least two mold runners are used for carrying out plastic deformation on the metal blanks in the blank cavities and guiding the metal blanks to the welding chamber structure, and the welding chamber structure is used for carrying out interface welding on metal from the different mold runners; and the extrusion assembly is used for extruding the metal blanks in the at least two blank cavities. The extrusion force can be obviously reduced, the material flow uniformity is improved, the die complexity and material waste are reduced, the profile forming quality is improved, and the service life of the die is prolonged.

The invention belongs to the technical field of aluminum alloy material preparation, and particularly relates to a preparation method of an aluminum alloy reflector bar, which comprises the following steps: sequentially carrying out high-temperature extrusion processing, low-temperature extrusion processing, extreme high-temperature solution treatment and aging treatment on an aluminum alloy cast ingot to obtain the aluminum alloy reflector bar; the heating temperature of the high-temperature extrusion processing is 500-560 DEG C; the heating temperature of the low-temperature extrusion processing is 300-350 DEG C; the solid solution temperature of the extreme high-temperature solid solution treatment is 560-580 DEG C; the cost is reduced, and the performance of the aluminum alloy bar is improved.

The embodiment of the invention relates to an intelligent control method and system for a data-driven aluminum extruding machine and the aluminum extruding machine, and belongs to the technical field of electronic data process.The method comprises the steps that multi-source time sequence data are collected and converted to obtain two-dimensional depth characteristics, data distribution is detected, and the data distribution is calculated; a generative adversarial network and dynamic time warping oversampling are used to enhance an unbalanced sample, a domain invariant feature model is trained to extract cross-working-condition robust features, state evaluation information output by the model is accessed to a non-parameterization prediction control framework, a multi-objective optimization function is constructed based on real-time sliding window data at each beat, and a multi-objective optimization function is constructed based on real-time sliding window data. And an optimal control sequence is issued to an execution mechanism after solving, and online closed-loop adjustment of parameters such as the extrusion speed and the temperature is achieved. According to the embodiment of the invention, data processing, AI and automatic control are fused, self-adaption to working condition changes is realized, the control precision and the quality stability can be improved, and the energy consumption and the cost are reduced.

The invention relates to the technical field of metal material plastic forming, and discloses an extrusion feeding device, an extrusion forming system and a control method.The extrusion feeding device comprises a loading module and a feeding driving module, and the loading module is arranged between an extrusion driving device and an extrusion forming device; a plurality of loading parts used for loading bars are distributed on the loading module, the plurality of loading parts extend and penetrate in the first direction, the loading module is provided with a heating assembly, and the heating assembly is used for heating the bars of the plurality of loading parts; the feeding driving module is used for driving the loading module to move in the direction perpendicular to the first direction so as to control the loading module to move out of or move into the working position between the extrusion driving device and the extrusion forming device. According to the invention, the heating assembly and the plurality of loading parts are adopted, bar material supplement and temperature stabilization are completed in the extrusion stroke, the extrusion temperature of the bar material can be accurately controlled, and the controllability of extrusion process conditions is ensured.

The invention relates to the field of aluminum alloy profile extrusion cooling, and discloses an extrusion cooling online detection and feedback correction system which is characterized by comprising a parameter acquisition module, a cooling data acquisition module, a cooling device calibration module, a data processing and control module and a cooling device controller. By organically combining multi-parameter sensing, device precise calibration, multi-dimensional state evaluation, intelligent function matching, closed-loop feedback adjustment and machine learning self-optimization, a highly-intelligent, self-adaptive and high-precision cooling control system is constructed, the industrial pain point in the aluminum alloy extrusion cooling process is fundamentally solved, and the production efficiency is improved. And the method has great value for improving the product quality and the production efficiency of the high-end aluminum alloy profile.

The invention discloses a process for preparing a high-strength aluminum alloy profile through gradient cooling die-electromagnetic vibration combined extrusion, and belongs to the technical field of aluminum alloy machining. According to the technology, the uniform fine grain structure and high performance of the aluminum alloy profile are achieved through the design of the length of a die working tape and the flow gradient of a cooling channel in cooperation with an electromagnetic vibration device. After a blank is subjected to homogenization treatment, the blank is extruded through a gradient cooling die, a thin-wall area working zone is 20-25 mm, the cooling water flow is 15-20 L / min, a thick-wall area working zone is 10-15 mm, the cooling water flow is 5-10 L / min, 20-50 Hz electromagnetic vibration is applied at the same time, water mist quenching and aging treatment are conducted immediately after extrusion, zinc ions serve as heterogeneous nucleation cores to promote generation of new crystal grains, ferrocene sulfenyl is adsorbed to the surfaces of the crystal grains to inhibit growth, and the thickness of the crystal grains is 10-15 mm. The average grain size is refined, and the effect is improved.

The invention belongs to the technical field of non-ferrous metal material preparation, and particularly relates to a preparation method of an aluminum alloy extruded profile, which comprises the following steps: smelting and casting raw material components of the aluminum alloy extruded profile to obtain a cast ingot, and then carrying out homogenization treatment, three-way high-temperature upsetting and drawing, high-temperature annealing, cryogenic three-way compression, high-temperature extrusion, cooling and aging treatment to obtain the aluminum alloy extruded profile. An aluminum alloy extrusion profile is obtained; the temperature of three-way high-temperature upsetting and drawing ranges from 500 DEG C to 560 DEG C, the temperature of high-temperature annealing ranges from 540 DEG C to 580 DEG C, the temperature of cryogenic three-way compression ranges from-180 DEG C to-150 DEG C, and the temperature of high-temperature extrusion ranges from 500 DEG C to 540 DEG C; the strength and the ductility of the aluminum alloy extruded profile are improved.

The application relates to the technical field of aluminum material processing, in particular to an aluminum material extrusion forming device and a forming process. The aluminum material extrusion forming device comprises a base, an extrusion assembly, a discharging box, a heating assembly, a die changing assembly, a die and a feeding assembly. The extrusion assembly and the discharging box are located on the base, the heating assembly and the feeding assembly are located on the side of the base, a passage is formed in the side wall of the discharging box in the width direction, the die changing assembly is located in the passage, the die is located on the die changing assembly, a feeding port and a discharging port are formed in the side wall of the discharging box in the length direction, a ingot containing cylinder which is movably connected with the feeding port is arranged in the feeding port, and a temperature control assembly is arranged in the discharging box. The die placed on the die changing assembly is quickly connected with the ingot containing cylinder in the discharging box through the arrangement of the die changing assembly, a plurality of dies can be arranged at the same time, the installation and replacement time of the dies is reduced, the temperature of the die in the discharging box is controlled by the temperature control assembly, and the production efficiency and product quality are improved.

The invention relates to the technical field of aluminum profile hot extrusion cooling shaping, and particularly discloses an aluminum profile hot extrusion cooling shaping device which comprises a fixing table, a lifting table is arranged at the upper end of the fixing table in a lifting mode, a mounting groove is formed in the lower end of the lifting table, a graphite disc is arranged in the mounting groove in a lifting mode, and a graphite plate is arranged in the middle of the inner bottom wall of the graphite disc. A scraping assembly is arranged on the lifting table, and a switching assembly is arranged on the fixed table. The graphite plate is fixedly placed in the graphite plate, then the graphite plate is lifted into the installation groove, the height of the lifting table is adjusted at the same time, the cambered surface of the graphite plate abuts against the aluminum profile, the graphite plate can rapidly absorb and dissipate heat of the aluminum profile, and the aluminum profile is rapidly cooled, solidified and shaped under the pressure effect. And the scraping assembly is used for scraping the cambered surface of the graphite plate to repair or adjust the cambered surface shape, and the switching assembly is used for switching different graphite plates, so that the production efficiency is improved, and different cambered surface requirements are met.

The invention discloses an aluminum alloy extrusion temperature control method based on numerical calculation, which relates to the technical field of metal material processing, and comprises the following steps: constructing a heat-force coupling model in an aluminum alloy extrusion process; based on the thermal-mechanical coupling model, initial extrusion process parameters are obtained through numerical simulation and a target optimization mode; aluminum alloy extrusion is carried out based on the initial extrusion process parameters, and the extrusion outlet section average temperature and the section deviation temperature when the aluminum alloy extrusion outlet section average temperature is stable are calculated; judging whether the extrusion outlet section average temperature is in a preset temperature range or not and whether the section deviation temperature is not greater than a preset deviation threshold value or not; and according to the judgment result, the optimal extrusion speed is determined, and aluminum alloy extrusion is conducted at the optimal extrusion speed. Uniformity and consistency control over the temperature of the section of an aluminum alloy extrusion outlet can be achieved, the aluminum alloy extrusion forming efficiency and forming quality are improved, and raw material loss of aluminum alloy extrusion forming is reduced.

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.

An apparatus for reducing the cross-section of a tubular hollow body with a hollow body wall has a shaping die on the outer side of the hollow body, a mandrel in the interior of the hollow body, and a shaping drive with a mandrel drive and a die drive. The shaping die is movable by the die drive to reduce a cross-section of the hollow body with an axial movement of the die. The mandrel is movable via the mandrel drive along the hollow body axis through the die opening in the shaping die. The hollow body wall is subjected to a tensile stress by the mandrel and is drawn in the direction of the axial movement of the mandrel through the die opening. The mandrel drive and the die drive are controlled so that the axial mandrel movement and the axial die movement die are superimposed on one another.

This invention provides a method for improving the microstructure and corrosion uniformity of low-temperature extruded magnesium alloys, belonging to the field of magnesium alloy preparation and processing. The method includes the following steps: S1: Cutting a low-alloy element content magnesium alloy ingot and removing the surface oxide layer to obtain a cast sample; S2: Performing pulsed current homogenization treatment on the cast sample; S3: Removing the surface oxide layer from the homogenized alloy to process it into an extrusion billet; S4: Performing low-temperature extrusion treatment on the extrusion billet under pulsed current assistance. This invention improves the microstructure and corrosion uniformity of low-temperature extruded magnesium alloys while ensuring high strength and plasticity, and is suitable for the efficient and energy-saving preparation of biodegradable magnesium alloy extruded bars and sheets.

This invention discloses an isothermal extrusion method for aluminum alloys based on data feedback optimization control, belonging to the field of metal material processing technology. The method includes: Step 1, extruding an aluminum alloy rod at a preset initial temperature and a preset initial extrusion speed; Step 2, acquiring the extrusion exit temperature of the aluminum alloy rod in real time, and determining in real time whether the extrusion exit temperature is not less than a preset maximum temperature. If so, adjusting the extrusion speed in real time using a preset control equation until the current aluminum alloy rod extrusion is completed; Step 3, acquiring the function of the extrusion speed changing with time during the current aluminum alloy rod extrusion process, and correcting the function to obtain the corrected speed for extruding the next aluminum alloy rod; Step 4, if further extrusion is needed, extruding the next aluminum alloy rod at a preset initial temperature and corrected speed, and returning to Step 2 for repeated execution. This invention can significantly improve the efficiency and quality of aluminum alloy extrusion forming.

The invention relates to the technical field of copper pipe drawing, in particular to automatic copper pipe drawing equipment which comprises a main body plate, a drawing and bending mechanism for drawing a copper pipe and bending the radian of a die is arranged at the upper end of the main body plate, and the drawing and bending mechanism comprises two guide grooves symmetrically formed in the inner side face of the main body plate. The main body plate is slidably connected with connecting plates in the two guide grooves respectively, and the upper end of the main body plate is provided with a movable chambering mechanism for chambering the inner side surface during drawing and arc-shaped bending; the first winding device and the second winding device wind and unwind the connecting rope, so that the limiting ball is driven to reciprocate in the copper bar, the diameter of the limiting ball is the same as the designed inner diameter of the copper bar, the inner diameter is prevented from being smaller than a preset value when the copper bar is drawn, and the quality of the drawn copper bar is improved.

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 present invention discloses a combustible casing for an underground coal gasification channel and a preparation method thereof, belonging to the technical field of petroleum industry pipe manufacturing. The preparation process of the combustible casing is simple. The combustible casing is composed of 0.2-1.0Zr, 1.0-5.0Zn, 1.0-5.0Al, 7.0-13.0Gd, 3.0-6.0Y, 3.0-6.0Nd, and the remainder being Mg and impurities in mass percentage. After being cast and turned into an ingot, the ingot is solution treated and extruded, and then subjected to aging treatment. Finally, the combustible casing is prepared, which has sufficient space for normal operation and has the characteristic of being burned and consumed above a specific temperature. The casing has a rationally designed alloy element composition, low density, high specific strength, excellent room temperature and high temperature strength, and the characteristics of being burned and consumed above the specific temperature.

The invention discloses a vacuum extrusion device for preparing titanium and titanium alloy, relates to the technical field of titanium and titanium alloy preparation, and aims at solving the problems that an existing device is prone to sealing failure, not thorough in cleaning and low in temperature control precision. The device comprises a vacuum chamber, an extrusion rod, an air passage system, an air source distributor, a temperature monitoring module and an external control module. The working section of the extrusion rod is provided with three sections of spiral grooves, and precise coupling of dynamic sealing, self-cleaning and temperature field regulation and control is achieved through cooperation of an air channel system and multiple air channels. The first section of main sealing spiral groove forms a high-pressure air curtain, the second section of temperature control spiral groove adjusts the temperature in a self-adaptive mode through a shape memory alloy ring, and the third section of cleaning spiral groove conducts deep cleaning through the reverse suction effect. And the external control module adaptively regulates and controls each gas path according to temperature and impurity concentration monitoring data, so that the structure is simplified, the efficiency is improved, the product quality stability is guaranteed, and the batch production requirements of high-quality titanium and titanium alloy are met.

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 discloses an aluminum profile extruding machine with an adjusting function, and particularly relates to the technical field of metal extrusion, the aluminum profile extruding machine comprises a multi-directional extruding mechanism and a movable frame, the multi-directional extruding mechanism comprises a displacement shaft, a sliding sleeve block and an arc-shaped rail, the displacement shaft slides on the inner wall of the movable frame, the sliding sleeve block is fixed to one end of the displacement shaft, the arc-shaped rail is arranged on the outer wall of the sliding sleeve block, and the sliding sleeve block is fixed to the inner wall of the movable frame; the arc-shaped rail is used for guiding the sliding sleeve block to move. The multi-directional extrusion mechanism is adopted, and the multi-directional extrusion mechanism has the advantages that multiple branch points of an aluminum profile achieve synchronous adjustment and extrusion in different directions, parameters do not need to be adjusted multiple times, the waiting and joining time of extrusion machining is shortened, and the extrusion machining efficiency is greatly improved, so that the problems that equipment needs to adjust operation parameters multiple times, waiting and joining time exists among different steps, and equipment cost is reduced are solved. Therefore, the overall processing rhythm is difficult to be compact and efficient, and finally, the efficiency of adjusting and extruding at different directions of each branch point of the aluminum profile is relatively low.

The invention discloses a continuous extrusion device and a control method thereof.The control method comprises the following steps that locking pressure is provided for a shoe seat mechanism through a limiting module so that the shoe seat mechanism can be mechanically locked, energy storage pressure is provided for the shoe seat mechanism through a hydraulic unit so that pressure compensation can be conducted on the shoe seat mechanism, and the shoe seat mechanism can be continuously extruded. A hydraulic lock is arranged on a pressing loop of the hydraulic unit, and the hydraulic unit forms energy storage pressure through the hydraulic lock; the energy storage pressure is low pressure more than two times of the actual working pressure, the locking pressure is low pressure of 3-5 Mpa, the energy storage pressure is low pressure of 8-12 Mpa, the locking pressure is equal to the actual working pressure, and the actual working pressure is determined based on the extrusion force generated by the extrusion wheel; the extrusion device is controlled to carry out copper rod extrusion operation on the copper rod conveyed by the feeding device, and a finished product output by the extrusion device is received through the material receiving device; in the copper rod extrusion operation executing process, the copper rod extrusion operation of the extrusion device is dynamically adjusted, and the production stability and precision are guaranteed.

The invention relates to the technical field of metal extrusion, in particular to extrusion forming equipment and method for an aluminum alloy automobile transmission shaft. The extrusion forming equipment comprises a base and a mold base, a supporting base is installed on the top face of the base, a guide rail is installed at the top end of the supporting base, and a heat preservation assembly is slidably connected to the surface of the guide rail; the heat preservation assembly is used for wrapping a preheated aluminum bar, a square limiting seat is fixedly connected to the surface of the heat preservation assembly, a horizontal guide groove allowing the square limiting seat to horizontally move is formed in the surface of the guide rail in a matched mode, and a rotary guide groove allowing the square limiting seat to rotate is formed in the surface of the guide rail in a matched mode. The invention aims to solve the problem that when a preheated blank is conveyed to an extrusion die, the surface layer of the blank rapidly exchanges heat with the environment to rapidly dissipate heat, so that a remarkable temperature gradient is formed on the section of the blank, and the blank is subjected to non-uniform plastic deformation in the extrusion process.

The invention discloses a multi-parameter self-adaptive regulation and control extrusion device for aluminum profile production, and relates to the technical field of aluminum extrusion, the multi-parameter self-adaptive regulation and control extrusion device comprises a plurality of groups of protective shells, extrusion units are arranged in the protective shells, the protective shells can be vertically spliced up and down, and a feeding assembly is arranged on the top protective shell; the feeding assembly can push an aluminum material to vertically move downwards, the extrusion unit comprises extrusion dies, extrusion grooves are formed in the extrusion dies, the hole diameters of the upper extrusion grooves are sequentially reduced from top to bottom, the interior of each extrusion die is hollow and provided with a liquid cavity, and a temperature sensor is fixedly installed in each liquid cavity; the multiple sets of heat dissipation pipes are connected into the extrusion die at equal intervals, and flow dividing assemblies are arranged in the heat dissipation pipes; the supporting unit is supported on the outer side of the heat dissipation pipe and the outer side of the extrusion die in a surrounding mode, a horizontal monitoring system is arranged in the supporting unit, dynamic adjustment can be conducted according to the water cooling temperature, refrigerant waste is reduced, and the horizontal state of the die is monitored and adjusted in real time.

In a process for generating a profile on a plastically deformable, preferably cylindrical, workpiece (2) by axial forming, a relative movement of a forming tool profile provided on a forming tool and the workpiece (2) to be formed is carried out in a forming process to generate a workpiece-side profile with a workpiece-side profile length (L). During the relative movement of the forming tool profile and the workpiece (2), an oscillating relative movement is generated, in which a forming stroke and a return stroke in the opposite direction to the forming stroke are performed alternately. The ongoing forming process is varied with respect to the oscillating relative movement. A machine arrangement (100) is designed for carrying out the above process.

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 invention provides a degradable magnesium alloy material and a preparation method and application thereof. The degradable magnesium alloy material comprises the following components in percentage by weight: 3.00%-8.00% of Gd, 2.00%-4.90% of Y, 0.01%-0.50% of Zn, 0.01%-1.00% of Zr or Mn and the balance of Mg, the total content of Gd and Y is 8.00%-12.00%. The degradable magnesium alloy material has excellent strength, plasticity and degradation performance.