4555 results about "Metal machining" patented technology

The invention relates to the technical field of welding fixing devices, and discloses a metal machining welding fixing device which comprises a base, a welding machine is fixedly mounted at the top of the base, a motor is fixedly mounted at the bottom of the base, and a fixing mechanism is arranged at the top of the base. A first clamping plate is driven by a motor to move to clamp a welding part, the situation that deviation occurs when the welding part is welded, and consequently the welding part is damaged is prevented, the working efficiency of equipment is improved, the welding speed is higher, alignment is more accurate, the welding stability of the welding part is improved, and the quality of the welding part is better; when the welding part is clamped, the first sliding plate drives the second clamping plate to move to elastically clamp the welding part, deviation of the welding part is avoided, the welding precision of the welding part is improved, the welding quality of the welding part is better, and the overall working efficiency of equipment is improved.

The invention relates to the technical field of model construction, in particular to a method and a system for constructing a sheet metal working three-dimensional process model. The method comprises the following steps: acquiring equipment specification data and material characteristic data; the method comprises the following steps: acquiring geometric parameters and motion parameters of sheet metal processing equipment by using a three-dimensional scanner, and integrating equipment specification data and material characteristic data to construct a sheet metal three-dimensional initial process model; analyzing a material plastic deformation characteristic of the material characteristic data and setting a processing parameter threshold range; the machining parameter threshold range is input into the three-dimensional initial process model for stage machining process simulation, the flange area strain rate, the dangerous section thinning rate and the rebound angle variable quantity are output, and stage machining process simulation comprises plate inflow stage simulation, forming stage simulation and shaping stage simulation. According to the method, three-dimensional scanning, comprehensive machining process simulation, topological optimization and a real-time error feedback mechanism are introduced, so that the construction accuracy of the sheet metal machining process model is improved.

The invention belongs to the technical field of metal processing and forming, and particularly relates to seamless metal composite pipe rolling equipment with a multi-fulcrum guide plate adjusting device and a method. The multi-fulcrum guide plate adjusting device comprises an adjusting hydraulic cylinder, a base end cover, a sliding block seat, a sliding block seat pressing plate, a push rod, a Y-shaped connecting frame, a guide plate, a pin shaft, a pin shaft baffle, a sliding block seat end cover, a locking seat, a locking hydraulic cylinder, a universal coupling and an adjusting rod. The guide plate is accurately controlled through the adjusting hydraulic cylinder and the locking hydraulic cylinder to achieve up-down, autorotation, swinging and other multi-freedom-degree position adjustment, the device can be suitable for rolling processes with different working condition requirements, the guide plate does not need to be replaced many times, rolling can be conducted only by adjusting the guide plate, and after the guide plate works for a long time and is abraded, the service life is prolonged. Abrasion loss can be compensated by adjusting the position of the guide plate, and production efficiency is improved; and meanwhile, the push rod and the adjusting rod are clamped and locked through the locking hydraulic cylinder, and it is guaranteed that the multi-fulcrum guide plate adjusting device has enough strength in the rolling compounding process.

The invention relates to a metal cutting machining path planning system, and aims to optimize the efficiency and precision of a metal machining process through advanced technical means. The system comprises a plurality of functional modules: an image acquisition module captures a multi-angle high-resolution image of a to-be-processed metal workpiece; the three-dimensional reconstruction module reconstructs a three-dimensional model by using the images; the cutting simulation module simulates the three-dimensional model in a virtual environment and records stress and heat distribution conditions in the cutting process in real time; the intelligent segmentation module divides the machining process into a plurality of stages according to the stress and heat data; the comprehensive optimization module is combined with a genetic algorithm and a simulated annealing algorithm to optimize the cutting path, depth and feeding speed of each machining stage; the feedback adjusting module monitors stress and heat changes in actual machining, and when the stress and heat changes exceed threshold values, cutting parameters are automatically adjusted or machining is paused. According to the system, through comprehensive application of image processing, analog simulation and optimization algorithms, the cutting efficiency and the product quality are remarkably improved.

The invention relates to the technical field of metal processing and casting, and particularly discloses a residual stress control system and method based on metal casting molding, and the system collects simulation process parameters of a metal casting molding process and basic parameters of a to-be-cast assembly, and analyzes a residual stress risk assessment value of the metal casting molding process through big data. Potential casting problems can be recognized and solved from the source, powerful data support is provided for follow-up casting optimization work, the actual effect brought by process optimization is quantified by evaluating the process optimization index of the metal casting forming process after the process optimization set of the metal casting forming process is executed, and the process optimization efficiency is improved. A basis is provided for subsequent adjustment and improvement, the technology optimization set of the metal casting forming process is adjusted, the technology adjustment index of the metal casting forming process is judged, and finally adjustment feedback is conducted on intelligent control over the residual stress of the metal casting forming process, so that the metal casting forming process meets the actual casting requirement.

The invention discloses a turning device for an electronic control valve of an automobile refrigeration compressor, and belongs to the field of metal processing.The turning device comprises a machine tool, a through rotating groove is formed in the upper surface of the machine tool, the front end of the rotating groove extends to the front surface of the machine tool, a part base is arranged in the rotating groove, and first motors are fixed to the left side and the right side of the machine tool correspondingly; two sliding ways are formed in the front surface of the machine tool, an output shaft of the first motor penetrates into the sliding ways and is fixedly provided with a screw rod, and the outer surface of the screw rod is in threaded connection with a telescopic frame. The machining efficiency is greatly improved, the time needed for machining a single part is shortened, the production yield is increased, the requirement for large-scale production is met, the part base is driven by the motor to turn over, and machining at different angles is achieved.

The invention belongs to the technical field of metal processing, particularly relates to a multi-degree-of-freedom welding mechanical arm for processing a metal steam cabinet, and provides the following scheme aiming at the conditions that the current processing equipment cannot automatically correct the position of a welded metal plate, does not have an auxiliary cooling function of a welding point and is easy to cause welding deformation. Comprising a tool welding platform, an adjusting module is arranged above the tool welding platform, the adjusting module comprises a U-shaped supporting plate, a mounting round hole is formed in the tool welding platform, and a rotating round pipe is connected to the interior of the mounting round hole through a bearing. According to the multi-degree-of-freedom welding mechanical arm for metal steam cabinet machining, accurate cooling operation on welding points is achieved, deformation of a steam cabinet plate after welding is avoided, meanwhile, multi-angle welding on a metal cabinet plate is achieved, and therefore the labor amount of workers in the welding process is reduced, and the machining production efficiency of the welding mechanical arm is improved.

The invention discloses automatic welding equipment for metal machining, and relates to the technical field of metal welding, the automatic welding equipment comprises a base, a fixed plate is fixedly mounted on the outer wall of the top of the base, a movable plate is slidably connected to the outer wall of the top of the base, and a welding assembly is arranged at the middle end of the top of the base; a second electric telescopic rod is controlled to be started, a welding gun head can be pushed to penetrate through a protection hopper cover, and butt-jointed metal pipes are welded; by means of the arranged protection hopper cover, welding slag generated by welding can be limited, the welding slag is prevented from falling off in a large range, and on the other hand, the cleaning assembly can conveniently clean the welding slag; meanwhile, the protection gas tank is arranged, inert gas can be injected into the protection hopper cover in the welding process, and therefore the situation of welding oxidation is reduced, and the welding effect is guaranteed; and meanwhile, after welding is completed, when the welding gun head is drawn back, the welding gun head can pass through the through opening, the surface of the welding gun head is scraped through the through opening, and therefore automatic cleaning of the surface of the welding gun head is achieved.

The invention relates to the technical field of metal processing control, in particular to an energy consumption control method and system for an oxygen-free copper rod up-drawing process, and the method comprises the steps: dividing the up-drawing process, and defining core energy efficiency parameters of each stage; collecting core energy efficiency parameters of each stage in real time, and generating a core energy consumption parameter set; comparing the core energy consumption parameter set with a preset energy consumption reference model, and identifying an abnormal mode existing in each stage; adjusting weights are dynamically distributed, and a temperature-speed-flow composite optimization instruction is generated; correcting parameters of the energy consumption reference model based on historical regulation and control data, and generating an energy efficiency control rule set adaptive to process state change; and performing real-time dynamic control on the energy consumption of each stage according to the updated energy efficiency control rule set and the composite optimization instruction. By means of the method, the problems of energy efficiency unbalance and static rule stiffness caused by multi-stage parameter isolated regulation and control in a traditional process are effectively solved, full-process self-adaptive parameter collaboration is achieved, power consumption per ton is remarkably reduced, and quality stability is improved.

The invention relates to an aluminum steel dissimilar part and a preparation method thereof, and relates to the technical field of metal processing. According to the main technical scheme, an aluminum component of a set structure is deposited on a steel component through a friction extrusion deposition method, so that aluminum-steel interface connection is achieved, and an aluminum-steel dissimilar part is obtained; wherein the aluminum component is made of aluminum or aluminum alloy. According to the method, the aluminum-steel dissimilar part is prepared mainly through the friction extrusion deposition additive manufacturing process, a traditional aluminum-steel interface hard and brittle intermetallic compound layer is converted into a tough amorphous layer, and the problems that an existing aluminum-steel dissimilar part is low in interface tensile strength and prone to cracking are solved.

The invention discloses a defect detection method and system for a camshaft metal machining surface. The method comprises the following steps: acquiring a to-be-detected image, wherein the to-be-detected image comprises a camshaft metal processing surface; processing the to-be-detected image to generate a region-of-interest image indicating the cam surface; the image of the region of interest is input into an anomaly detection model to be processed, an anomaly score graph is output, and an anomaly score in the anomaly score graph represents a probability value of anomaly of a corresponding pixel; selecting a first number of abnormal scores according to a descending order of the abnormal scores, and calculating a mean value of the selected abnormal scores; the defect information of the to-be-detected image is determined by comparing the mean value with a preset threshold value, the defect information comprises whether the to-be-detected image has defects or not and the defect position, and the preset threshold value is determined by analyzing the anomaly detection model. The scheme is low in cost and high in efficiency.

The invention discloses a laser cutting device for metal machining and manufacturing and a cutting method.The laser cutting device comprises a workbench, a left supporting frame and a right supporting frame, the left supporting frame and the right supporting frame are connected to the left side and the right side of the workbench correspondingly, and the lower end of a laser cutting head penetrates through the interior of the upper surface of a shielding protection frame installed above the workbench; fixing sleeves are symmetrically installed in a cylindrical shielding protection frame, a cleaning plate used for assisting in removing impurities is connected to the lower portions of the fixing sleeves, and automatic regulation and control assemblies used for controlling the cleaning plate to ascend and descend in a reciprocating mode are symmetrically installed on the outer side of the shielding protection frame. According to the laser cutting device for metal machining and manufacturing and the cutting method, two sets of cleaning plates are used in cooperation, slag and chippings adhering to the outer side face of a metal workpiece can be removed, and therefore the slag discharging effect is improved, slag adhering and fusion tumors are prevented from being generated on the surface of the metal workpiece in the later period, and therefore the later cutting operation cannot be affected; and meanwhile, the quality of the metal workpiece cut in the later period is also improved.

The invention belongs to the technical field of other metal machining machinery manufacturing, and particularly relates to pipeline inner wall grinding equipment which comprises a machine body, a first guide rail is fixedly connected to the upper surface of the machine body, a first guide groove is formed in the first guide rail, and two sliding tables are slidably connected into the first guide groove; a storage box is fixedly connected to the upper surface of one sliding table, a first hydraulic cylinder is fixedly connected to one side of the storage box, a grinding wheel is arranged at the output end of the first hydraulic cylinder, a positioning table is fixedly connected to the upper surface of the other sliding table, and a limiting ring and a limiting plate are fixedly connected to one side of the positioning table. A limiting groove is formed between the limiting plate and the limiting ring, a grinding assembly is arranged on one side of the first hydraulic cylinder and comprises a motor fixedly connected to the output end of the first hydraulic cylinder, and a positioning disc is fixedly connected to one side of the motor. The problem that metal dust generated during grinding is accumulated on the inner wall of the pipeline, and the pipeline grinding quality is affected is solved.

The invention relates to the technical field of processing machine tools, and discloses an intelligent forming machine tool for metal processing machinery manufacturing, which comprises a rack, a transverse moving assembly, a linear motor, a workbench, a spindle motor and a frame body, an annular rail is arranged at the upper end of the rack, and two arc-shaped guide rails are jointly connected to the upper end of the annular rail; the two arc-shaped guide rails are installed on the two opposite sides of the frame body respectively, a propelling mechanism is installed in the frame body and used for fixedly installing a spindle motor, positioning assemblies for adjusting the inclination angle of the propelling mechanism are installed on the two opposite sides of the frame body, and a shell is arranged below the frame body. The shell is connected with the propelling mechanism and connected to an output shaft of the spindle motor in a sleeving mode, and an unbalance loading resisting mechanism is installed in the frame body. According to the intelligent forming machine tool manufactured through the metal machining machine, the machine tool can machine a workpiece of a special-shaped curved surface structure, and pressure can be actively applied to offset the unbalance loading force borne by the turning head and the transmission shaft.

The invention relates to cooling equipment for drilling machining, and relates to the technical field of metal machining, the cooling equipment comprises a moving seat and a cooling mechanism, and the cooling mechanism comprises a cooling seat which is arranged on the moving seat through an elastic mechanism and slides in the sliding direction of the moving seat when being stressed; and the spraying assembly is arranged on the cooling base and used for spraying cooling liquid towards the drill bit, and when the moving speed of the moving base driving the drill bit to move is changed, the cooling base swings in a reciprocating mode under the action of inertia and elastic force. When the moving speed of the drill bit is changed, under the action of inertia and an elastic mechanism, the spraying assembly continuously swings in a reciprocating mode, the spraying position of the spraying assembly is changed, and therefore the spraying area is increased, the safety risk in the machining process is reduced, and meanwhile the machining quality of metal is improved.

The invention relates to the field of metal processing, and particularly discloses a low-carbon steel oxide scale reduction annealing process and a hot galvanizing process, the low-carbon steel oxide scale reduction annealing process comprises the following steps: S1, pretreatment: firstly carrying out water / abrasive sand blasting treatment on a hot-rolled strip steel substrate, then washing with water, then heating to 650-700 DEG C at a heating rate of 50-60 DEG C / s, and keeping the temperature for 2-3 hours; after heat preservation treatment, taking out and immediately putting into a salt solution to obtain a pretreated base material; s2, reduction annealing: carrying out reduction annealing on the prepared pretreated base material in a reducing gas atmosphere; the hot galvanizing process comprises the following steps: carrying out oxide scale reduction annealing treatment on a hot-rolled strip steel base material; and hot galvanizing is conducted on the hot-rolled strip steel obtained after the oxide scale reduction annealing treatment is conducted in zinc liquid, a zinc coating is formed on the surface of the hot-rolled strip steel, and the hot-galvanized plate is prepared. The method has the characteristics that the oxide scale is effectively reduced, good adhesion of a zinc layer and a substrate is ensured, and the quality of a plating layer is improved.

The invention relates to the technical field of metal processing, in particular to a zirconium alloy plate texture control method for regulating recrystallization based on cold rolling deformation. The zirconium alloy hot-rolled plate blank is subjected to annealing treatment, so that an equiaxial grain structure with the proper size is obtained; cold rolling treatment is conducted on the zirconium alloy plate blank obtained after annealing treatment, different rolling deformation accumulation modes are introduced through total deformation design, rolling pass control and pass deformation control, and different dislocation and subgrain distribution states are formed in the zirconium alloy cold-rolled plate; and the zirconium alloy plate strip prepared through cold rolling deformation is subjected to annealing treatment, so that a completely recrystallized plate with refined grains and weakened texture is obtained, and the plasticity and forming performance of the zirconium alloy plate are improved. The technological process is simple, the recrystallized zirconium alloy plate with the basal texture weakened can be obtained only by slightly changing the zirconium alloy plate machining technology, the anisotropy of the zirconium alloy plate can be reduced, and therefore the use performance of the zirconium alloy plate is improved.

The invention relates to the technical field of metal processing, in particular to a numerical control bending machine for sheet metal processing, which comprises a rack, a bending table is fixedly mounted on the lower side of the middle of the rack, and a sliding groove is formed in the upper end of the bending table corresponding to a metal wire; according to the metal wire bending device, when the pressing roller rotates, an ejector rod can also be driven to rotate synchronously, the ejector rod extrudes and pushes pressing plates on the two sides to slide on the lifting frame, a second compression spring and a hollow rubber bag, gas in the hollow rubber bag can be sprayed out from a nozzle pipe, and the metal wire can be bent through the nozzle pipe; according to the metal wire bending device, the cleaning plate is arranged, so that chippings accumulated at the joint of the cleaning plate and the metal wire can be removed, the situation that a large number of chippings are accumulated and the chippings are clamped between the metal wire and the cleaning plate when the metal wire continuously passes through the cleaning plate is reduced, scratches of the chippings on the surface of the metal wire are avoided, and therefore the bending quality of the metal wire is guaranteed; and the removed chippings fall on the bending table, so that concentrated cleaning is facilitated.

The invention discloses automatic calibration and punching equipment for a metal cabinet door plate of an explosion-proof cabinet and a punching method of the automatic calibration and punching equipment, and belongs to the technical field of metal processing.The equipment comprises a processing table, a fixing frame is arranged above the processing table, and an inner cavity of the processing table is rotationally connected with a bidirectional threaded rod; the two sides of the surface of the bidirectional threaded rod are in threaded connection with clamping arms, a third stepping motor is fixedly installed on the right side of the machining table, and the right end of the bidirectional threaded rod penetrates to the right side of the machining table and is fixedly connected with an output shaft of the third stepping motor. According to the punching device, the calibration assembly and the position adjusting assembly are used in cooperation to calibrate the punching position, meanwhile, the fine adjustment assembly is arranged to align the punching position, and finally the fixing frame, the punching drill and the lifting assembly are used in cooperation to drill the punching position; therefore, the purposes of automatic calibration of the punching position, accurate punching position and automatic punching can be achieved.

The invention discloses a low-energy-consumption integral cold insulation pipe bracket steel hoop machining jig, and belongs to the technical field of metal machining dies. Comprising an upper die base, and a stamping part is inserted into the middle of the upper die base; comprising a lower die base, a stamping concave base is fixedly connected to one side of the lower die base, a frame selection assembly used for limiting a steel billet is arranged outside the stamping concave base, the stamping concave base and the impact corner of a variable-diameter convex ring are chamfered, two notch grooves are formed in the outer portions of the stamping concave base and the variable-diameter convex ring in a symmetrical structure, and transmission rollers are rotationally connected into the notch grooves; through holes are formed in the middle of the stamping concave base and the middle of the variable-diameter convex ring, and elastic material pushing pieces are fixedly connected into the through holes. By arranging the stamping part with the variable-diameter convex rings with different diameters, the use efficiency of the die is remarkably improved.

The invention relates to the technical field of metal processing, and discloses a speed reducer gear and rotating shaft hot assembly device which comprises a fixing bottom plate, a transmission frame arranged at the top end of the fixing bottom plate and a clamping base, a fixing plate is installed at the top of the fixing bottom plate, the transmission frame and the clamping base are both installed at the top end of the fixing plate, and the clamping base is used for positioning and clamping a bearing. A pair of telescopic rods is installed at the top of the transmission frame, a limiting plate is installed at the top ends of the telescopic rods, an auxiliary positioning plate is arranged at the top end of the limiting plate, a clamping frame is arranged at the bottom of the limiting plate and used for limiting the reduction gear, a pair of sliding grooves are formed in the top end of the limiting plate, and the auxiliary positioning plate is movably clamped in the sliding grooves; the transmission wheel penetrates through the limiting plate; the clamping frame is mounted at the bottom of the transmission wheel; compared with the prior art, the overall assembly efficiency can be improved, and the situation that the temperature of the gear will be below the required temperature for expansion of the inner ring is reduced.

The invention provides a corrugated pipe forming springback control method and die based on stress regulation and control, and relates to the technical field of metal processing. The method comprises the following steps: obtaining a circumferential strain increment expression according to a material bending deformation principle; a plastic strain increment expression, a plastic stress differential equation and a circumferential strain increment expression are combined to obtain a circumferential stress and axial stress relational expression, and according to the circumferential stress and axial stress relational expression, a relation curve with the circumferential compression dependent variable as an independent variable and the ratio of the axial stress to the pre-compression as a dependent variable is obtained; after the pipe blank is bent and deformed, the wave troughs can move towards the axis of the pipe blank in the radial direction of the pipe blank to achieve radial shrinkage of the wave troughs, so that the circumferential stress of the wave troughs is increased, the axial stress difference of the inner surface and the outer surface is reduced, then the axial stress of the corrugated pipe is reduced, and the axial springback of the corrugated pipe is effectively controlled.

The invention discloses a near-net-shape endless rolling non-oriented electrical steel ultra-thin strip and a preparation method thereof, and belongs to the technical field of metal processing. According to the method, the near-net-shape endless rolling non-oriented electrical steel ultra-thin strip with the finished product thickness being only 0.05-0.15 mm is prepared through the processes of smelting, thin slab continuous casting, endless rolling hot continuous rolling, coiling, online heat preservation, acid pickling, primary cold rolling and continuous annealing, normalizing and secondary cold rolling annealing are not needed in the process, and short-process, low-cost and efficient production can be achieved. The defects that the surface of the non-oriented electrical steel ultra-thin strip is corrugated, the magnetic performance is poor, the surface is scratched and severely narrowed in the annealing process, iron loss is not easy to control, and energy consumption is high are overcome, and the prepared non-oriented electrical steel ultra-thin strip is excellent in magnetic property and can be applied to high-frequency and high-speed motors. And the development requirements of new energy and low-altitude economy are met.

The invention relates to a metal machining cutter bar, in particular to a novel semi-active electromagnetic vibration reduction cutter bar. The invention aims to provide a novel semi-active electromagnetic vibration reduction cutter bar. The cutter bar has the characteristics of good vibration reduction effect and adjustable vibration reduction frequency range. According to the technical scheme, the novel semi-active electromagnetic vibration reduction cutter bar comprises an inner magnetic ring unit, an outer magnetic ring unit and a balancing weight, wherein the inner magnetic ring unit, the outer magnetic ring unit and the balancing weight are rotatably positioned on a center rod; the inner magnetic ring unit and the eccentric balancing weight can deflect relative to the axis of the cutter; the outer magnetic ring unit comprises an electromagnet and is fixed to the center rod, and an external power source supplies power to an electromagnet coil.

The present invention discloses a wind turbine tower reinforcement device, which specifically relates to the field of metal processing technology, and comprises two towers and a base, wherein the tower is vertically placed on the top of the base, a plurality of connecting columns are fixedly connected to the outside of the base, the upper and lower ends of the tower are welded with connecting flanges, a plurality of bolts are inserted into the connecting flanges of the two tower connection ends, a strengthening and stabilizing mechanism is arranged on the top of the base, and an auxiliary fastening mechanism is arranged on the outside of the tower. The present invention can improve the stability of the connection between the tower and the base and the fastening of the nut by arranging the strengthening and stabilizing mechanism, and effectively prevent the bolts from loosening; at the same time, the auxiliary fastening mechanism guides the construction personnel to tighten the bolts in opposite directions, ensures uniform force during the connection process, and enhances the integrity of the wind turbine tower structure.

The invention relates to the technical field of machine vision, in particular to a matching method of a near-field vision sensor under a moving target, which comprises the following steps: acquiring workpiece image data on the output end of metal processing equipment based on the vision sensor, segmenting the workpiece image data, and extracting a workpiece image from the workpiece image data; standard parameters of the machined workpiece of the metal machining equipment are uploaded, and a workpiece three-dimensional model is constructed based on the standard parameters of the machined workpiece; according to the invention, multi-party image acquisition is carried out on a workpiece output by an output end of metal processing equipment through a visual sensor, a workpiece image is extracted from workpiece image data through image segmentation processing, and then a standard workpiece three-dimensional model is constructed according to standard workpiece parameters. And performing similarity comparison on the captured two-dimensional image on the standard workpiece three-dimensional model and the extracted workpiece image, thereby finally performing qualification judgment on the workpiece output by the metal processing equipment.

The utility model discloses metal processing equipment capable of accurately and efficiently bending, and relates to the technical field of bending equipment. The bending machine comprises a bending machine frame body, a lower die holder assembly and a hydraulic jack, wherein an electric jack and an upper pressing die are assembled on the bending machine frame body; the lower die base assembly comprises a supporting base, a lower die hinging piece A and a lower die hinging piece B; connecting bases are arranged on the two sides of the supporting base and hinged to the lower die hinge piece A and the lower die hinge piece B correspondingly. Hook-shaped pressing dies are arranged on the lower die hinging piece A and the lower die hinging piece B; a hydraulic jack is fixed to the bending machine frame body, and the telescopic end of the hydraulic jack makes contact with the two hook-shaped pressing dies. Under the action of the lower die holder assembly and the hydraulic jack, after the upper pressing die bends a metal plate once, the hydraulic jack pushes the lower die holder assembly upwards, so that the two hook-shaped pressing dies bend the two sides of the metal plate again; and the effects of bending twice and improving the bending efficiency are achieved.

The invention relates to the technical field of metal processing, and discloses a production method of an ER2209 austenite ferrite duplex stainless steel welding wire, the ER2209 austenite ferrite duplex stainless steel welding wire comprises an adopted vacuum induction melting furnace and a liquid storage tank, the outer side of the vacuum induction melting furnace is provided with a protective shell, one side of the liquid storage tank is fixedly connected with a conveying pump, and the other side of the liquid storage tank is fixedly connected with a vacuum pump. A cooling assembly is arranged in the protective shell. The preparation method comprises the following steps that S1, raw materials are prepared and smelted; s2, cooling the vacuum induction melting furnace; s3, forging is conducted; s4, hot rolling and solution treatment; s5, acid pickling and surface treatment; s6, cold drawing and intermediate annealing; s7, surface copper plating and finish drawing; and S8, winding and packaging. In the acid pickling process of the wire rod, the oxidation degree of the wire rod is detected, meanwhile, the concentration of the acid pickling solution is adjusted according to the actual situation, and the situation that the surface of the wire rod is excessively corroded or is not thoroughly cleaned due to the fact that the concentration of the acid pickling solution is improper is prevented.

The invention belongs to the field of metal processing, and relates to an in-situ self-generated NiMoCoAlTi high-entropy alloy toughened metal ceramic material and a preparation method thereof. According to the invention, Ti (C, N) ceramic is used as a matrix, Ni, Mo, Co, Al and Ti are directly added as binders, and spark plasma coupling high-frequency induction sintering is carried out to obtain the high-temperature-resistant ceramic. The preparation method comprises the following steps: firstly, mixing Ti (C, N), Ni, Mo, Co, Al and Ti, then carrying out ball milling and drying to obtain powder, and carrying out spark plasma coupling high-frequency induction sintering. The method is beneficial to improving the mechanical property of the material, saves the preparation time of the high-entropy alloy powder, and has the advantages of being simple in preparation method, convenient to operate and the like. The obtained titanium carbonitride-based metal ceramic has higher toughness and hardness and excellent antifriction and wear-resisting properties, and can be used for manufacturing high-precision numerical control machine tool guide rails and other wear-resisting and corrosion-resisting parts.