2557 results about "Hydraulic press" patented technology

The invention discloses a frame manufacturing method and a frame, relates to the technical field of frame production, and aims to solve the problem that a welding seam at the splicing position of an existing motorcycle frame is obvious. According to the technical scheme, the method is characterized by comprising the following steps that S1, a metal plate is provided as a raw material, and a frame blank is formed through cutting; s2, the frame blank is placed in a stretching die on a hydraulic machine to be subjected to pressure forming, deformation of the frame blank is controlled through a cavity of the stretching die, and a continuous streamline curved surface is formed on a frame body; and S3, laser cutting is carried out on the frame body based on artificial intelligence. The method comprises the following sub-steps that S3.1, actual three-dimensional point cloud data of the surface of the stretched and formed frame body are obtained through an optical scanning system. According to the method, dense welding seams of traditional multi-section splicing are thoroughly eliminated through the integrated streamline forming technology, intelligent prediction and self-adaptive correction are conducted on material springback and thermal deformation in combination with the AI dynamic compensation cutting technology, and precise adaptation of the frame contour and the motor interface is achieved.

The invention relates to a copper-aluminum composite heat dissipation plate forging and pressing manufacturing process and a copper-aluminum composite heat dissipation plate. The process comprises the steps that S1, assembling is conducted, specifically, an aluminum plate and a copper plate are stacked, and a double-layer plate is obtained; s2, welding is conducted, specifically, the aluminum plate and the copper plate are compounded in a diffusion welding mode, the junction position of the aluminum plate and the copper plate is welded to form a diffusion layer, and a double-layer welded plate is obtained; the double-layer welding plate is extruded and stretched through a hydraulic machine to form the copper-aluminum composite heat dissipation plate, forming holes are formed in a template, facing an aluminum plate, of the hydraulic machine, the aluminum plate is extruded through the forming holes, heat dissipation protrusions of an aluminum-clad copper structure are formed on the copper-aluminum composite heat dissipation plate, the width of the heat dissipation protrusions is larger than 1.5 mm, and the heat dissipation protrusions are arranged on the aluminum plate; and the thickness of the aluminum layer on the surface of the heat dissipation bulge is not less than 0.1 mm. The copper-aluminum composite heat dissipation plate is manufactured through the process. According to the technology, the copper-aluminum composite heat dissipation plate can be obtained through a simple manufacturing method, the high heat conductivity of copper and the corrosion resistance of aluminum are compatible, and connection at the copper-aluminum interface is reliable.

The invention relates to the technical field of hydraulic machine oil cylinder assembling, in particular to an automatic oil cylinder assembling control system and an assembling process. Comprising an assembling platform, a clamping mechanism, a mounting mechanism, a visual monitoring system and an upper computer, the upper computer controls the clamping mechanism, the mounting mechanism and the visual monitoring system, through cooperation of all the mechanisms and a monitoring module, an oil cylinder is moved from one end of the assembling platform to the other end of the assembling platform, all parts are assembled in the moving process, and the assembling process is completed. The purpose of automatically installing the oil cylinder is achieved, the whole installation process can be monitored, and the purposes of reducing the number of reworking times, improving efficiency and improving the quality of the oil cylinder are achieved.

According to the powder forming hydraulic machine, a servo motor and an automatic control system are arranged, a gear disc is in transmission connection with the servo motor through a gear, the automatic control system can control the precision of vertical rotation of the gear disc, and therefore the precision of material adding and reducing of the hydraulic machine is guaranteed while automatic material adding and reducing are achieved through the hydraulic machine; the supporting rings are two opposite semicircular steel rings, the supporting rings are located in the circular grooves formed in the inner ring of the gear disc, the gear disc can move up and down to drive the supporting rings to move up and down, when the lower pressing head needs to be replaced, only the two semicircular supporting rings of the supporting rings need to be detached, then the core rod is removed, the lower pressing head can be separated from the female die plate, and the replacement time of the lower pressing head is shortened.

The invention belongs to the technical field of rock drills, and discloses a rotary impact type hydraulic rock drill. The rock drilling bit group is arranged in one side of the rock drilling machine shell; the rotating mechanism is arranged at the top of the rock drill shell, and the rotating mechanism is located above one side of the rock drill bit set; according to the technical scheme, by arranging the hydraulic mechanism, the cooling and cleaning assembly and the driving assembly, when the hydraulic mechanism is started to make the output end collide with one end of the middle of the rock drilling bit set back and forth, the top of one side of the driving assembly is driven to move up and down back and forth; cold water in one side of the cooling and cleaning assembly can be pumped back and forth into the other side of the cooling and cleaning assembly, and then the cold water can be sprayed out through the other side, so that heat generated by the impact part of the hydraulic mechanism and the rock drilling bit group can be cleaned and cooled; the service life of parts in the rock drill shell is prevented from being influenced by high temperature.

The invention relates to the technical field of cubic hydraulic press monitoring, in particular to a cubic hydraulic press health monitoring method and system based on an intelligent sensor, and the system comprises a health monitoring terminal, a data sensing module, a data processing module, a health diagnosis module, a fault management module, a diagnosis positioning module, a cooperative influence module and a rear-end execution module. According to the method, the time domain, the frequency domain and the time domain-frequency domain combined features are extracted, meanwhile, the state change slope is quantified, early warning of the equipment degradation trend is achieved, a fault type-abnormal feature-weight mapping table is constructed, a fault core component and the specific position are accurately positioned, and the fault core component is accurately determined by matching with digital twinborn visual marks. And meanwhile, the internal relation between components is quantified by constructing a component incidence matrix, the health influence coefficient of the cooperative component is calculated in combination with a fault grade coefficient, key components affected by faults are recognized in advance, a cooperative damage list is formed, and operation and maintenance personnel are assisted to intervene in advance.

The invention relates to the technical field of mine construction, in particular to a cross-section layer large-dip-angle fully mechanized coal mining face wall caving prevention method which comprises a wall caving prevention equipment anti-skid cooperative system which is an integrated system composed of a hydraulic support, a scraper conveyor, an inclined anti-skid mechanism and an anti-skid hydraulic machine. The device is used for achieving anti-skid, anti-falling and posture cooperative adjustment of the device in the pseudo-inclined dip mining slope adjustment process. The hydraulic support is rigidly connected through the externally-arranged anti-skid hydraulic machine, the linkage influence of sliding-down of the scraper conveyor is counteracted, and the hydraulic support is prevented from toppling over; the built-in anti-skid hydraulic machine corrects the deviation of the connecting rod and protects the hydraulic support from being damaged; the anti-skidding, anti-falling and anti-caving effects of the fully-mechanized coal mining equipment in effective mining of the large-dip-angle working face are achieved through layout adjustment of the pseudo-dip dynamic adaptive fault and the fully-mechanized coal mining equipment anti-skidding system, the mining efficiency of the working face is improved, the equipment sliding-down possibility is reduced, and the technical problems existing in the large-dip-angle fully-mechanized coal mining process are solved.

The utility model relates to a spatial multilayer ultrahigh pressure belt type dehydration system which comprises a main rack, a material distributing and feeding device, a material distributing device, a filter belt, a filter belt traction machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing device, the filter belt traction machine and the filter pressing hydraulic machine are connected and mounted on the main rack; and the output end of the material distributing and feeding device is connected and mounted above the material distributing device. The dehydration method comprises the steps of equipment starting, material distribution, filter pressing dehydration and unloading. The organic waste dehydration device is higher in dehydration efficiency and lower in cost, and can be used as an organic waste dehydration device capable of reducing pollution and carbon.

The utility model discloses a gate valve with improved bidirectional sealing performance, which comprises a valve body, baffle rings are symmetrically arranged in the valve body, the outer side surfaces of the baffle rings are fixedly connected with the inner wall of the valve body, a gate plate is arranged on the inner sides of the baffle rings, an auxiliary pipeline is arranged above the gate plate, and the auxiliary pipeline is fixedly connected with the side surface of the valve body. Annular grooves are symmetrically formed in the surfaces of the two sides of the gate plate, sealing rings are fixedly connected to the surfaces of the inner sides of the annular grooves, a guide pipe is fixedly connected to the upper surface of the gate plate, the lower end of the guide pipe communicates with the annular grooves, the upper end of the guide pipe penetrates through the auxiliary pipeline to be connected with a hydraulic mechanism, and a driving mechanism is installed at the upper end of the auxiliary pipeline. The connecting flange is fixedly connected with the valve body. The problem that in the using process of a traditional gate valve, abrasion of a sealing ring on the gate plate sealing face is more and more serious is solved, the situation that the gate valve leaks due to the fact that the sealing performance of the gate plate is reduced after long-time use is avoided, the using sealing performance of the gate valve is improved, and the service life of the gate valve and the gate plate is prolonged.

The invention is suitable for the technical field of powder metallurgy and advanced ceramic material sintering equipment, and provides an integrated flash sintering device for vacuum and a sintering method. The device comprises a power supply module, a high vacuum module, a first servo hydraulic machine, a second servo hydraulic machine, a third servo hydraulic machine, a mold rotation switching module, a vacuum feeding module, a green body pressing module, a demolding and mold cleaning module and a mold transfer module. According to the invention, an integrated gear tray design is adopted to integrate the functions of die installation, graphite paper treatment and green body pressing, and online synchronous cleaning of an electrode and a die is realized through die fixation and a cleaning brush arranged in a cleaning drum; therefore, full-automatic, high-efficiency and high-stability continuous production of flash sintering from powder filling to finished product collection is realized.

The invention relates to the field of building construction equipment, and discloses an intelligent material distributing machine of a tower building machine and a working method thereof.The intelligent material distributing machine of the tower building machine comprises a base fixed to the top of the tower building machine and further comprises a material distributing mechanism, a supporting arm, a rotary disc, a conveying pipe, a swing arm and a weight box; a pulling plate structure pulls a connecting rod to slide towards a first gear plate in a track plate, then the lower end of a supporting rod slides downwards in a track strip and then supports a guiding pipe, the guiding pipe rotating leftwards is supported, the influence of the gravity of the guiding pipe on a hydraulic press is reduced, and the situation that the hydraulic press is prone to being damaged due to the too large load is avoided. Impact force of concrete in the runner pipe is converted into stable supporting force of the buffer structure to the runner pipe, shaking of the runner pipe under the impact force of the concrete is reduced, the stability of concrete pouring of the runner pipe is improved, the stability of the discharging structure is enhanced, shaking caused by instability of the guide pipe can be avoided, and the load on a hydraulic press is reduced.

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

The invention discloses a hydraulic machine intelligent optimization control method based on big data analysis, and relates to the technical field of hydraulic machine intelligent control, and the method comprises the following steps: carrying out the real-time frequency domain analysis of pressure, flow and energy consumption signals during the operation of a hydraulic machine, constructing a load spectrum analysis module, extracting main frequency fluctuation characteristics, and building a corresponding spectrum template; and performing sliding cross matching on the control threshold change curve of the energy-saving mode switching and the frequency spectrum template, identifying a periodic coupling risk section, and labeling and recording the periodic coupling risk section. According to the invention, through frequency domain analysis and a self-adaptive lag mechanism, frequency resonance type oscillation in energy-saving control is effectively suppressed, and the operation stability and the response reliability of the system are improved; meanwhile, a strategy self-learning mechanism based on resonance labels and energy efficiency feedback is introduced, parameters and control strategies are dynamically optimized and judged, the adaptability and long-term robustness of the system to complex working conditions are enhanced, and intelligentization and high efficiency of energy-saving control of the hydraulic equipment are achieved.

The utility model discloses an energy storage cylinder and system of a disc spring hydraulic mechanism, and the energy storage cylinder comprises a cylinder body which is internally provided with a cavity, a piston, a sealing ring and a high-pressure oil channel; the piston is movably arranged in the cavity; the cavity comprises a working cavity and a low-pressure cavity; one end of the working cavity is connected with the high-pressure oil channel, the other end of the working cavity is connected with the low-pressure cavity, and the diameter of the low-pressure cavity is larger than that of the working cavity. The sealing ring is arranged on the periphery of the piston and used for preventing high-pressure oil entering from the high-pressure oil channel from flowing into the low-pressure cavity when the sealing ring is located in the working cavity. The high-pressure oil channel is used for inputting high-pressure oil to push the piston to move towards the low-pressure cavity or outputting the high-pressure oil to enable the piston to move towards the direction away from the low-pressure cavity. And the low-pressure cavity is used for collecting high-pressure oil flowing out of the sealing ring when the sealing ring is separated from the working cavity. The low-pressure oil cavity with the diameter larger than that of the working cavity is formed in the energy storage cylinder, high-pressure oil leakage occurs at the position of the sealing ring, and energy storage of the energy storage cylinder is stopped.

The invention discloses a concrete crack resistance detection device for building civil engineering, and relates to the technical field of concrete performance detection.The concrete crack resistance detection device comprises a base, the upper surface of the base is sunken downwards to form a mounting groove, and the middle of the mounting groove is sunken downwards to form a first image acquisition chamber; the transparent aluminum oxide objective table is arranged in the mounting groove, and the concrete sample is arranged on the transparent aluminum oxide objective table; the first camera is arranged in the first image acquisition chamber, the image acquisition end of the first camera faces the transparent aluminum oxide objective table, and the first camera can acquire an image of the lower surface of the concrete sample; the heating mechanism is arranged in the transparent aluminum oxide objective table and / or on the lower surface of the transparent aluminum oxide objective table, and the heating mechanism is used for heating the sample to a target temperature; a pressing plate is arranged at the end of a telescopic rod of the hydraulic press, and the hydraulic press applies pressure to the upper surface of the sample through the pressing plate. Different stress conditions and different temperature and humidity environments can be accurately simulated, the cracking condition of the sample can be comprehensively observed, and large-batch tests can be carried out.

The invention discloses an internally-inserted water-cooled magnet device for a high-field hybrid magnet. The internally-inserted water-cooled magnet device comprises a container assembly and a magnet coil assembly arranged in the container assembly. The container assembly comprises an upper barrel assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner supporting assembly, a middle barrel assembly, a lower barrel assembly and an electric connecting assembly. The hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention discloses a novel internally-inserted water-cooled magnet container assembly for a hybrid magnet with high mechanical stability, which comprises an upper cylinder component, a container end cover, a hydraulic machine component, a central tube component, an inner support component, a middle cylinder component, a lower cylinder component, an electric connection component and a first conductive flexible connector, and a magnet coil assembly comprises a plurality of radially-sleeved coils; the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is increased, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, the dismounting and maintenance process of the mixed internally-inserted water-cooled magnet device is simple and rapid, and the efficiency is high. And the dismounting efficiency is improved.

The invention relates to the technical field of inductance devices, and discloses a single-phase oil-immersed air-core reactor body structure which comprises a reactor frame. The reactor frame comprises an upper pressing plate and a lower pressing plate; an inner insulating cylinder assembly, a coil and an outer insulating cylinder assembly are sequentially arranged in the upper pressing plate and the lower pressing plate from inside to outside in a sleeved mode in the radial direction, and the inner insulating cylinder assembly, the coil and the outer insulating cylinder assembly are coaxially arranged. The edges of the upper pressing plate and the lower pressing plate are connected through a plurality of non-metal connecting screws, and laminated wood nut suites are respectively arranged between the plurality of non-metal connecting screws and the upper pressing plate and between the plurality of non-metal connecting screws and the lower pressing plate; the top of the upper pressing plate makes contact with the hydraulic machine, and the hydraulic machine can press the coil through the upper pressing plate. The edges of the upper pressing plate and the lower pressing plate are connected through the multiple non-metal connecting screws, the tensile strength and the bending strength of the non-metal screws are large, and compared with metal screws, the additional loss can be reduced by 60%-90%.

The utility model discloses a forklift split rim production system which comprises a first punching machine, an oil press, a second punching machine, a roll-over stand and a lathe which are sequentially arranged, and a chopping and feeding device is arranged at the feeding end of the first punching machine; a circulating conveying line is arranged between the lathe and the first punching machine, and a feeding conveying line is arranged at the end, close to the first punching machine, of the circulating conveying line; according to the production line, by arranging the production line, the automation level can be improved, the labor intensity of workers in production can be reduced, meanwhile, the production takt is conveniently adjusted through automatic production, the invalid waiting time between production stations is shortened, and the production efficiency is improved.

An epoxy concrete stirring device is used for solving the problems that underwater epoxy repairing materials are stored in a layered mode, the mixing time is uncontrollable, and underwater operation is inconvenient. The device comprises a stirring kettle, a kettle cover and an internal partition plate, wherein the partition plate divides a cavity into an upper-layer curing agent storage area and a lower-layer mortar mixing area; a seepage mechanism is arranged in the center of the partition plate, a movable plug is in linkage with an inner wall bayonet lock through a threaded groove in the outer wall of a stirring shaft, the stirring shaft rotates to drive the movable plug to move upwards, seepage holes in the outer wall of a liquid collecting groove are opened, and controllable inflow of a curing agent into mortar is achieved; the feeding port and the discharging port are controlled to be opened and closed through a hydraulic valve, a hydraulic machine and a hydraulic clamp respectively. According to the device, advanced reaction of components is avoided through layered isolation, mixing is accurately triggered through mechanical linkage, hydraulic driving adapts to underwater operation, it is ensured that the low consistency and high uniformity of materials are kept, and the reliability of underwater repair construction and the performance stability of the materials are improved.

The invention discloses a friction stir welding process for a copper-aluminum alloy. The friction stir welding process sequentially comprises the steps of pressing, dotting, plug mounting, clamping, welding and plug dismounting. The combination problem caused by material difference is solved through negative clearance close fit and hydraulic press fit of the copper part bulge and the aluminum part groove; a wide supporting surface plug with a heat insulation layer is adopted to prevent welding collapse; a preset tool ensures stable clamping; the preset stirring head design improves the fusion depth and material mixing effect; and the welding seam performance is guaranteed through post-welding treatment and multi-dimensional detection. According to the process, the limit of copper-aluminum double-sided friction stir welding is overcome, and the requirements of a liquid cooling heat dissipation system and other harsh scenes for sealing performance, strength and corrosion resistance are met.

The invention discloses a high-field water-cooling magnet device which comprises a container assembly and a magnet coil assembly, and the magnet coil assembly is located in the container assembly and communicated with the container assembly. The container assembly comprises a hydraulic machine assembly, and the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention discloses a method for manufacturing an aluminum alloy thin-wall part through hot shape correction of a rubber bag after sheet metal forming. The method comprises the steps that firstly, an aluminum alloy thin-wall part blank is obtained through sheet metal forming; secondly, the blank is subjected to solution treatment; thirdly, the blank obtained after solid solution treatment is put into a refrigerator to be stored; fourthly, the rigid mold, the rubber bag and the like are installed on a press machine, overall heating is conducted, and the temperature is kept stable; fifthly, the blank obtained after solid solution is rapidly placed above a hot-state rigid mold, and positioning of the rigid mold and the blank is completed; 6, quickly closing the die, pumping hydraulic oil into the rubber bag, and increasing the pressure of the press machine to the set pressure; seventhly, the rubber bag extrudes the blank to enable the blank to be tightly attached to the rigid mold, and the mold temperature is transmitted to the blank; 8, under the combined action of high pressure and a thermal field, the aluminum alloy is subjected to aging strengthening and stress relaxation, and springback is reduced; 9, unloading the pressure of the rubber bag and the hydraulic machine; and 10, opening the press machine to take out the blank, and uniformly cooling in a cooling tool to obtain a thin-wall part finished product.

The invention relates to the technical field of frozen soil sample confining pressure testing, and discloses a subarea temperature control dynamic confining pressure loading device suitable for an over-saturated frozen soil sample, which comprises a hydraulic machine device controlled by a console, an air pressure mechanism, a cooling mechanism and a multi-state confining pressure assembly, a flexible rubber three-dimensional strain stress sensing cylinder for accommodating a frozen soil sample is arranged in the middle of the multi-state confining pressure assembly, and a temperature sensor and a pressure sensor are arranged in the flexible rubber three-dimensional strain stress sensing cylinder; the multi-state confining pressure assembly is formed by stacking a plurality of groups of multi-state confining pressure units; according to the invention, complex stress transfer and non-uniform confining pressure among soil particles in a natural stratum can be simulated, and the simulation authenticity of the stress condition of the frozen soil sample is obviously improved. According to the invention, independent temperature control of soil body areas at different heights can be realized, a stable temperature gradient from the top to the bottom of a frozen soil sample can be accurately established, and a temperature boundary more conforming to field conditions is provided for research on mechanical behaviors of frozen soil.

The invention relates to the technical field of wind power gear forging, in particular to forging equipment for wind power gear forgings and a forging method of the forging equipment. A protective vertical plate is fixed to the corner of the top of the base, a top plate is installed at the top of the protective vertical plate, and a forging hydraulic machine is installed at the middle end of the top plate. Wherein the forging platform is located at the top of the base; wherein the number of the overturning bases is two, the two overturning bases are installed at the two ends of the top of the forging platform, and guide grooves are formed in the upper ends of the overturning bases. By means of the arrangement of the overturning base, manual near-field operation is replaced, safety risks caused by high-temperature and heavy forgings are completely eradicated, safe interlocking is formed by the groove type photoelectric switch and the Z-shaped shielding piece, it is ensured that the action is accurate and reliable, the overturning time is shortened to be the shortest, a high-temperature forging window of the forgings is fully utilized, and the heating frequency is reduced.

The utility model discloses a hydraulic control system, which relates to the technical field of hydraulic control and comprises an oil tank, a hydraulic pump, a main cylinder, a first electromagnetic plug-in mounting direction valve, a second electromagnetic plug-in mounting direction valve and a third electromagnetic plug-in mounting direction valve. The main oil supply path is communicated with a rapid cavity of the main cylinder through a first electromagnetic plug-in mounting direction valve, the main oil supply path is communicated with a lower cavity of the main cylinder through a second electromagnetic plug-in mounting direction valve, the main oil supply path is communicated with an upper cavity of the main cylinder through a third electromagnetic plug-in mounting direction valve, and the upper cavity, the lower cavity and the rapid cavity of the main cylinder are all communicated with an oil tank through an oil return path; sliding valve control of a conventional hydraulic machine is replaced by cartridge valve control, the hydraulic machine is simple in structure and stable in performance, can be widely applied to the fields of game coins, souvenir medal, medal and the like, brings considerable benefits, and can adjust the drift diameter of corresponding cartridge valve combination parts according to actual conditions so as to improve the application range.

The present invention discloses a safe unhooking and quick recovery device for a dynamic tamping machine and its working method. The device is arranged on the truss arm of the dynamic tamping machine and comprises a circular iron plate, an electromagnetic suction cup fixed to the lower surface of the circular iron plate, a plurality of hooks spaced apart on the outer edge of the circular iron plate, and a hoisting mechanism for suspending the circular iron plate. The electromagnetic suction cup electromagnetically absorbs the upper surface of the tamping hammer. The outer edge of the tamping hammer is provided with a plurality of grooves for hooking. The tail end of the hook has a rod body, which is hinged to the outer edge of the circular iron plate and driven to rotate by a hydraulic mechanism. The advantages of the present invention are: (1) the hook and the electromagnetic suction cup are used to double-hang the tamping hammer, which can not only achieve hoisting installation, but also avoid wear of the connecting parts, and realize wear-free unhooking; (2) a two-stage hoisting mechanism is used to hoist the tamping hammer. When the tamping hammer falls, the circular iron plate hoisted by the hoisting mechanism can fall synchronously, thereby realizing rapid recovery of the tamping hammer.

The invention discloses a method for eliminating rough stripes on the surface of a duplex stainless steel cold plate, which comprises the following steps: the interval time from the end of cutting of a duplex stainless steel casting blank to the beginning of coping is more than or equal to 48 hours, and the surface temperature of the casting blank before coping is less than or equal to 80 DEG C; the surface of the casting blank is ground for the first time through a 20 # grinding wheel, the opening degree of a screw-down valve of a hydraulic machine ranges from 50% to 70%, the current of a grinding machine ranges from 30 A to 50 A, the stepping of the grinding wheel ranges from 25 mm to 35 mm, and the moving speed of a grinding trolley ranges from 35 m / min to 45 m / min; a 36 # grinding wheel is used for grinding the surface of the casting blank for the second time and the third time, the opening degree of a screw-down valve of the hydraulic machine is 30-50%, the current of the grinding machine is 10-30 A, the stepping of the grinding wheel is 15-25 mm, and the moving speed of the grinding trolley is 25-35 m / min. According to the method, the surface of the casting blank is ground before hot continuous rolling, the surface roughness of the casting blank is reduced, after the ground casting blank is subjected to hot rolling, the thickness of iron and phosphorus on the surface of the plate is basically consistent, the iron and phosphorus can be completely removed after phosphorus removal, macroscopic chromatic aberration is eliminated on the surface of the cold-rolled plate, and therefore rough stripes on the surface of the duplex stainless steel cold plate are eliminated.

The invention relates to the technical field of powder processing and forming, in particular to magnetic powder pressing equipment and method. The pressing equipment comprises a workbench and a hydraulic mechanism arranged at the top of the workbench, and the bottom of the hydraulic mechanism is connected with a pressing head. A bottom die is fixedly arranged at the top of the workbench, a sliding way is formed in the top of the bottom die, and a die cylinder capable of longitudinally sliding along the side wall of the sliding way is elastically arranged in the sliding way. And an opening of the mold cylinder faces upwards. According to the magnetic powder pressing equipment and method, the additional powder is filled through the designed supplementing cavity, in the downward moving process of the pressing head, the position change of the movable part is used for enabling the mold barrel to rebound to collide with the pressing head, so that air holes in the powder are eliminated in the collision process, and the additional powder is supplemented into the forming mold cavity; therefore, the capacity of the powder in the forming die cavity is within the error range before each time of pressing.

The invention discloses a forging machine for magnesium alloy forgings, which relates to the technical field of forging machines and comprises a forging base, the top surface of the forging base is provided with a limiting rail and a forging base, the bottom surface of a fixed top seat is connected with a hydraulic machine, the fixed top seat is mounted at the top of the limiting rail, and a vibration absorption forging head is arranged on the limiting rail. The vibration absorption forging head hammers a forging piece on the forging base through output power of the hydraulic machine, a clamping mechanism is arranged on the forging base and used for clamping the forging piece, when the clamping mechanism clamps the forging piece, plastic deformation force generated by the forging piece when the vibration absorption forging head hammers the forging piece is absorbed, and the forging piece is clamped through the plastic deformation force. The clamping mechanism counteracts on the forging part and the forging base by utilizing plastic deformation force; and the forging piece clamping stability and stress uniformity of the clamping mechanism are improved, the forging piece forging yield is increased, and the impact force borne by the whole forging machine is greatly reduced.