43results about How to "Avoid inclusions" patented technology

The invention discloses a crack defect detection method based on an improved YOLOv8 model, and belongs to the technical field of target detection. The method comprises the steps of obtaining a crack common data set; performing data enhancement on the crack common data set, and dividing the crack common data set into a training set, a verification set and a test set according to a proportion; constructing a crack detection model of the improved YOLOv8 model; training and verifying the constructed crack detection model; and evaluating the final performance of the model through the four indexes. According to the invention, by modifying the Bottleneck structure of the C2f module, no extra FLOPs is brought; by adopting the HWD module, the relevance between the features is fully utilized, and more context information of the target object is reserved, so that other interference information mingled when the features are extracted by a convolution kernel is avoided, and the uncertainty of the information is effectively reduced; a Dyhead detection head is adopted to replace an original YOLOv8 detection head, a target detection head and attention are unified, the expression ability of the target detection head of the model is remarkably improved under the condition that the calculation amount is not increased, and the precision of the model is improved.

The utility model relates to the field of cutting, in particular to a raw material cutting device for stainless steel coupler machining. The technical problems that when cut pipes are collected, chippings and the pipes are collected together, when the pipes are subjected to finish machining subsequently, the pipes and the chippings need to be separated, and the working intensity of workers is increased are solved. According to the technical scheme, the raw material cutting device for stainless steel coupler machining comprises a workbench, a push rod, an electric cutting piece, a limiting plate, a ruler and the like; the workbench is fixedly connected with a push rod; the telescopic part of the push rod is fixedly connected with an electric cutting blade; limiting plates are slidably connected to the left side of the workbench. Two scales are arranged on the left side of the workbench and located on the front side and the rear side of the limiting plate correspondingly. The pipe is separated from chippings through the screen, the chippings are prevented from being mixed with the pipe, the subsequent manual cleaning procedure is added, and the separated chippings are collected through the collecting box.

The utility model discloses an aerated brick slurry pouring device. The device comprises a slurry tank, a material distribution sieve, a water supply pipe, an automatic control mechanism and a lifting mechanism for driving the material distribution sieve to ascend and descend, a lower pipe opening of the slurry tank is connected with an electric or pneumatic discharging valve and a discharging pipe, the distributing screen comprises an inverted-U-shaped screen body, a screen mesh is arranged below the inverted-U-shaped screen body, the upper portion of the U-shaped screen body is connected with a feeding pipe arranged on the discharging pipe in a sleeving mode, and a vibrator is arranged on the upper portion of the U-shaped screen body. The water supply pipe is provided with an electric or pneumatic water supply valve, and the water outlet end of the water supply pipe is connected to the upper end of the discharging pipe to flush the gap between the discharging pipe and the feeding pipe. According to the slurry pouring device, slurry can be uniformly and dispersedly poured into an air-added brick mold box, the air-added brick mold box is quickly filled with the slurry, no air is mixed in the slurry, the working efficiency is high, and the quality of a produced air-added brick product is good.

The invention provides an electron beam welding method for a ZL114A cast aluminum alloy oil tank product. The method comprises a pre-welding preparation step and a welding step. Wherein the welding part comprises the steps of spot fixed position welding and sealing welding of formal welding. According to the electron beam welding method provided by the invention, the defects of air holes, inclusions and the like in electron beam welding of ZL114A cast aluminum alloy fuel tank products are overcome.

The utility model belongs to the technical field of PET bottle flake recovery, and particularly relates to metal separation equipment for PET bottle flakes, which comprises a box body, a mounting cylinder, a feeding hopper, a supporting assembly, a material turning assembly, a plurality of conveying assemblies and a plurality of strip-shaped magnets, the box body is cylindrical, the mounting cylinder is fixedly mounted on the inner wall of the box body, a plurality of mounting openings are formed in the mounting cylinder, and the feeding hopper is arranged on the mounting cylinder. The multiple conveying assemblies are arranged in the corresponding installation openings respectively, the multiple strip-shaped magnets are fixedly installed in the corresponding installation openings respectively, the strip-shaped magnets located in the same installation opening are connected with the conveying assemblies, the feeding hopper is fixedly installed on the top of the box body and communicated with the box body, and a round opening is formed in the bottom of the box body. The supporting assembly is arranged in the circular opening and the feeding hopper. The PET bottle flake separating device is reasonable in design and simple in structure, metal impurities of PET bottle flakes can be efficiently and rapidly separated, and the purity and quality of the PET bottle flakes are improved.

The invention relates to the technical field of rubber oil seal air tightness detection, and discloses a rubber oil seal static air tightness detection device which comprises a base, first supporting seats are fixedly installed on the top of the base, an air tightness detection box cylinder is fixedly installed between the first supporting seats, and a control instrument is further fixedly installed on the top of the base. A second supporting seat is further fixedly installed on the top of the base. According to the invention, the inner U-shaped rubber oil seal is designed, and the rubber raised head and the rubber fin are designed on the inner U-shaped rubber oil seal, so that when the shaft head on the test shaft body is in full contact with the inner U-shaped rubber oil seal, the rubber raised head and the rubber fin are extruded, thereby better enabling the binding surface of the shaft head and the inner U-shaped rubber oil seal to be tightly attached and pressed; and the phenomena that small gaps are formed between the test shaft wall and the rubber oil seal, and when the small gaps rotate at a high speed for a long time, the small gaps are gradually increased, so that air flows, and the air tightness performance of the rubber oil seal is reduced are avoided.

The utility model relates to the technical field of gas-liquid separation, and discloses a butanol-octanol tail gas butyraldehyde gas-liquid separation device which comprises a separation cylinder, a partition plate is arranged in the separation cylinder, a fixing rod is fixedly connected to the outer portion of the partition plate, and the outer end of the fixing rod is fixedly connected to the middle of the inner wall of the separation cylinder. And the top of the partition plate is fixedly connected with a first separation plate, the top of the inner wall of the separation barrel is fixedly connected with a second separation plate, and the middle of the first separation plate and the middle of the second separation plate are jointly provided with a cleaning assembly. According to the device, the first motor drives the fan blades to rotate, so that when tail gas enters the device, gas is driven to move upwards, gas-liquid separation is promoted, the second motor drives the first scraping plate and the second scraping plate to rotate through the middle shaft, the first rotating ring and the second rotating ring, the second separating plate and the first separating plate are cleaned, and a large amount of water stains are prevented from being attached to the surface; therefore, the separation effect is reduced.

The raw material sieving and recycling device comprises the bag-type dust collector and a vertical frame, the vertical frame is located below the bag-type dust collector, the bottom face of the vertical frame is horizontally and fixedly connected with a bottom plate, the top face of the vertical frame is horizontally and fixedly connected with a top plate, a feeding assembly is arranged on the top plate, and a discharging assembly is arranged on the top plate. The feeding assembly is located under the bag-type dust collector, a drum screen assembly is arranged on the side wall of the vertical frame, and a driving assembly is arranged on the side wall of the vertical frame and located above the drum screen assembly. Materials are screened through the barrel-shaped screen, the barrel-shaped screen can conduct traditional barrel-type screening and can also conduct reciprocating swing motion, and the positions of the materials inside the barrel-shaped screen can be continuously changed in the vertical direction and the horizontal direction in cooperation with rotation of the barrel-shaped screen, so that dust can make better contact with the barrel-shaped screen, and the dust can be effectively separated from the barrel-shaped screen. Dust is prevented from being mixed in the raw materials, and screening is more thorough.

The utility model relates to the technical field of building template spraying machines, in particular to a building template anti-corrosion paint spraying machine which comprises a conveying hose and further comprises a feeding mechanism, a paint spraying mechanism, a paint spraying mechanism and a paint spraying mechanism. According to the scheme, the rubber roller adheres wood thorns to the surface of the building template firstly, then the adhered area of the building template is sprayed through the nozzle of the spray gun body, so that the wood thorns on the surface of the building template are removed firstly, then paint coating is sprayed, and the situation that the wood thorns are mixed between the paint coating and the building template is avoided; and therefore, the situation that the building template is damaged by worms and corroded due to the fact that an area without paint appears on the wooden building template after the wood thorns are scratched and broken off is avoided.

The bimetallic wear-resistant upper wing plate comprises a wing plate front end and a wing plate rear end, the upper wing plate front end is made of high-chromium cast iron with the Cr content of 25-27 wt.%, and the upper wing plate rear end is made of low-alloy steel which is good in toughness and easy to weld. The bimetal upper wing plate is manufactured through liquid composite casting, normalizing, quenching and tempering, a groove is formed in the rear end of the bimetal upper wing plate, and the bimetal upper wing plate can be connected with the middle groove through K-shaped groove welding. In addition, the invention also discloses a method for manufacturing the liquid composite bimetallic upper wing plate. By effectively controlling the pouring temperature, the pouring speed and the interval time of the two kinds of molten steel, good metallurgical bonding of the two kinds of steel is achieved, and the bonding part is high in strength and good in toughness.

The invention relates to the technical field of forage processing, and provides an automatic feeding device for grass filament processing, which comprises a feeding box and a fixing frame, the bottom of the feeding box is fixedly connected with supporting legs, the inner bottom of the feeding box is provided with an opening, and the inner bottom of the feeding box is provided with a filter screen; the bottom of the interior of the feeding box is fixedly connected with a guide plate, the inner side of the fixing frame is fixedly connected with a material guide plate, and a convenient feeding mechanism is arranged in the feeding box. By arranging the convenient feeding mechanism, when feeding work with height difference needs to be carried out, forage is put into the position close to the feeding plate in the feeding box; and then a motor is started, at the moment, the feeding plate is driven to move to the material guide plate through the rotating shaft, the driving roller, the driven roller and other assemblies, forage is driven to be put on the material guide plate, movement of the conveying belt is not affected through cooperation of the torsional spring rod and other assemblies, overall use is convenient, and labor is saved.

The utility model belongs to the technical field of belt conveying devices, and discloses a pipeline type belt conveyor which comprises a tubular housing, an arc-shaped partition plate protruding upwards is arranged in the tubular housing and divides the interior of the tubular housing into a long-distance chamber and a return-distance chamber, a long-distance carrier roller is installed in the long-distance chamber, and a long-distance carrier roller is installed in the return-distance chamber. The upper end of the conveying-distance carrier roller is in rolling lap joint with a conveying-distance section of the conveying belt, a return-stroke carrier roller is installed in the return-stroke chamber, the upper end of the return-stroke carrier roller is in rolling lap joint with a return-stroke section of the conveying belt, and a cleaning mechanism is arranged on the lower side of the starting end of the return-stroke section; according to the pipeline type belt conveyor, closed operation of the conveying belt is facilitated through the arrangement of the pipe type cover shell, dust overflow is avoided, the inner wall of the pipe type cover shell is divided into the independent conveying chamber and return chamber through the arrangement of the arc-shaped partition plate, dust is conveniently accumulated on the two sides of the bottom of the return chamber, dust discharging is facilitated, and the cleaning mechanism is arranged, so that the cleaning efficiency is improved. The lower surface of the return section of the conveying belt can be cleaned conveniently, and bulk particles are prevented from adhering to the surface of the conveying belt.

The invention relates to the technical field of automobile part injection molds, in particular to an automobile part injection mold in-mold rotary forming mechanism which comprises a base, a top seat, a plurality of supporting plates and a protective shell, the top seat is arranged on one side of the base, and the rotary forming mechanism further comprises a forming assembly, a mounting structure and a dust collection module. The mounting structure is arranged on the supporting plate, the forming assembly is arranged between the base and the top seat, the forming assembly rotates to adjust the position of a forming part when working, and the dust collection module is arranged on the inner side of the protective shell and connected with the forming assembly; the ejection module can be controlled to automatically work through the power output module while a final forming part formed by carrying a second-layer injection molding part is rotated and reset, so that the final forming part is ejected out of the cavity, a worker does not need to manually control the ejection time, the working continuity of the whole mold is ensured, and the production efficiency is improved. And the working efficiency of the whole injection mold is improved.

The utility model relates to the technical field of injection molding machines, in particular to a low-inertia ejection mechanism of an all-electric injection molding machine, which comprises a supporting bottom plate and a supporting frame, the supporting frame is fixedly mounted on the supporting bottom plate, a discharging barrel is arranged on the supporting bottom plate, one end of the discharging barrel is fixedly mounted on the supporting frame, and a feeding barrel is communicated with the discharging barrel. A spiral conveying rod is rotatably mounted in the discharging barrel, the interior of the spiral conveying rod is of a hollow structure, one end of the discharging barrel communicates with a discharging head through a sealing assembly, one end of the spiral conveying rod penetrates through the supporting frame and is fixedly provided with a conveying motor through a quick-release assembly, and the conveying motor is fixedly mounted on the supporting bottom plate through a motor shell; according to the device, the discharging head can be replaced through the sealing assembly, the sealing assembly can improve the connection sealing performance between the discharging head and the discharging barrel, and the situation that the spiral conveying rod is disengaged can be avoided through the arranged quick dismounting assembly when the rotating direction of the conveying motor is changed.

This utility model discloses a die-cutting device, including a frame, a gantry welded above the frame, a lifting plate slidably connected below the gantry, and a processing mechanism disposed on one side of the lifting plate, used to separate die-cut material fragments cut from the die-cutting material; the lifting plate is driven to rise and fall by a lifting cylinder, the die-cutting blade cuts the die-cutting material, the mounting plate rises and falls synchronously with the lifting plate, thereby driving the box body to rise and fall synchronously with the lifting plate, during the box body lifting process, the sliding plate slides along the inner wall of the box, the spiral spring uses its elasticity to squeeze the sliding plate, driving multiple round rods to press the die-cutting material after die-cutting, pushing out the die-cut material fragments cut from the die-cutting material, preventing the cut die-cut material fragments from being mixed in the formed die-cutting material, and ensuring the die-cutting effect of the die-cutting device.

The utility model relates to the technical field of packaging material production, in particular to a surface printing device for packaging material production, which comprises a base, a feeding bin and a heating box are arranged on the base, a cleaning mechanism is arranged in the feeding bin, a plurality of first hydraulic rods are arranged in the heating box, a fan is arranged on the first hydraulic rods, and a plurality of second hydraulic rods are arranged on the fan. A printing machine is arranged between the feeding bin and the heating box, dustproof blocking doors are arranged on the two sides of the printing machine, and a conveying belt is arranged on one side of the base, so that the influence of dust on the surface of the packaging material on printing is effectively prevented, and meanwhile, the printing part of the packaging material can be prevented from being accidentally scratched.

The utility model discloses a dry sand vibrating screen which comprises a placing base, a screening box is arranged above the placing base, the top of the screening box is connected with a filling hopper in a penetrating mode, the top of the placing base is fixedly connected with a crushing box, and a material returning mechanism is arranged on the crushing box. The material returning mechanism comprises two rotating shafts which are rotatably connected to one side of the crushing box in a penetrating mode, crushing rollers are fixedly arranged on the two rotating shafts in a sleeving mode, a connecting pipe is connected to one side of the crushing box in a penetrating mode, and a conveying pipe is fixedly connected to one end of the connecting pipe. According to the dry sand vibrating screen, sand materials which cannot pass through the second screening holes due to the large size in the screening box can be crushed and conveyed through the arranged material returning mechanism, so that the crushed sand materials can enter the screening box again to be vibrated and screened, and the situation that large-particle sand materials are mixed in the screened sand materials can be effectively prevented; and subsequent concrete processing is facilitated.

Compositions and methods are disclosed for providing a pet food product comprising kibbles and one or more inclusions, such as dried fruits or vegetables. Specifically, the kibble may have one or more shapes to form an interlock, and / or the inclusions are oil-coated to provide for increased density and reduce the density differences between the inclusions and the kibbles, both features are useful for keeping an even distribution of kibbles and inclusions in a package or container.

The present application belongs to the technical field of helicopter rotor blades, and particularly relates to a three-dimensional woven blade core mold structure and a manufacturing method thereof. The structure comprises a root sleeve, a positioning pin, a root winding belt, a foam wrapping cloth, a foam, a metal counterweight, a foam leading edge wrapping cloth, a counterweight wrapping cloth, a counterweight leading edge wrapping cloth, and a counterweight blocking block. The positioning pin is fixed in the positioning hole of the end face of the root sleeve, and then inserted into the foam. The root winding belt is wound around the joint area of the root sleeve and the foam. The foam surface is entirely wrapped with the foam wrapping cloth. The metal counterweight is embedded in the foam leading edge. The joint surface of the foam and the metal counterweight is wrapped with the foam leading edge wrapping cloth. The surface of the metal counterweight is wrapped with the counterweight wrapping cloth. The end face of the metal counterweight close to the blade tip is provided with the counterweight blocking block. The outside of the foam leading edge wrapping cloth, the counterweight wrapping cloth, and the counterweight blocking block is entirely wrapped with the counterweight leading edge wrapping cloth.

The invention discloses a dental comprehensive treatment table rotation in-place chair seat, which relates to the technical field of medical instruments, and comprises a main body table, and further comprises a chair seat fixedly arranged on the main body table, an adjusting assembly arranged in a matching groove, a hip seat arranged above the adjusting assembly, the hip seat is matched with the matching groove, and a telescopic soft sleeve is sleeved outside the hip seat. A mounting groove is formed in the side wall of the hip seat, a supporting assembly is arranged in the mounting groove, and the end of the supporting assembly is connected with the telescopic soft sleeve; one side of the chair seat is rotationally connected with a leg support, a driving assembly is arranged between the leg support and the chair seat, movable grooves are formed in the side walls of the two sides of the chair seat, sliding blocks are arranged in the movable grooves in a sliding mode, and enclosure assemblies are arranged on the sides, away from the chair seat, of the sliding blocks; and the top of the hydraulic lifting cylinder is fixedly connected with a rotating motor, so that a patient with mobility difficulty can be better assisted to enter the supine position of the treatment table, the risk of secondary injury is reduced, and the good medical experience of the patient is improved.

The utility model belongs to the field of fluorine lining check valves, and particularly relates to a detachable fluorine lining check valve which comprises a fluorine lining check valve body, the fluorine lining check valve body comprises a valve body, the two ends of the valve body are fixedly connected with a pipeline through flange plates, and the top of the valve body is fixedly communicated with a maintenance pipe. According to the fluorine-lined check valve, the fluorine-lined check valve body, the cleaning mechanism and the sealing mechanism are used in cooperation, when water flows in the inner cavity of the fluorine-lined check valve body, the valve clack turns over, meanwhile, the cleaning mechanism floats upwards and rotates under the buoyancy of water, the surface of the valve clack is cleaned, the connecting position of the overhaul pipe and the overhaul cover can be sealed through the sealing mechanism, and the service life of the overhaul pipe is prolonged. The problems that after the check valve is used for a long time, due to the fact that impurities are mixed in liquid flowing, the impurities can be adsorbed and accumulated on the valve clack, the valve clack can be clamped due to mass accumulation, the valve cannot be closed or opened in time, and the use safety of the valve is affected are solved.

The invention discloses full-automatic one-step injection-stretch-blow molding equipment, and relates to the technical field of plastic product molding. The device comprises a workbench, a protective box is fixedly connected to the top of the workbench, a motor is fixedly mounted in the protective box, a connecting box is fixedly connected to the side face of the protective box, an extrusion bin is fixedly connected to the side, away from the protective box, of the connecting box, and a rotating shaft is rotatably connected to the interior of the extrusion bin; according to the invention, through the arrangement of the crushing mechanism, heated raw materials can enter the feeding bin through the feeding pipe and then fall into the extrusion bin, the motor is started to drive the rotating shaft to rotate, and the rotating shaft rotates to drive the spiral extrusion blade to rotate to extrude the raw materials, so that the raw materials can be uniformly extruded. And through cooperation of a bevel gear A, a bevel gear B, a transmission belt and other assemblies, a vertical rod rotates rapidly and cooperates with smashing blades on the vertical rod to smash the raw materials, and particles are prevented from being mixed in the raw materials.

This invention discloses an ultra-pure 316L austenitic stainless steel for semiconductor manufacturing equipment, its preparation method, and its applications, belonging to the field of special alloy smelting technology. The chemical composition of this stainless steel includes: Cr: 17.5%~18.0%; Mo: 2.5%~3.0%; Ni: 13.5%~14.0%; S ≤ 0.003%; Al ≤ 0.01%; the balance being Fe and unavoidable impurities. The preparation method employs a triple process of vacuum induction melting, electroslag remelting, and vacuum arc remelting. Vacuum induction melting uses low-sulfur pure iron; electroslag remelting uses a completely aluminum-free slag system; vacuum arc remelting achieves deep deoxidation without residue in a high vacuum; subsequently, it undergoes high-temperature diffusion treatment, forging, and hot rolling. This invention completely eliminates Class B alumina inclusions and δ-ferrite, has an oxygen content of less than 5 ppm, a finer austenitic grain size than ASTM Grade 8, and achieves a mirror finish through electrolytic polishing, meeting the requirements for semiconductor applications.

The utility model belongs to the technical field of husked rice separating machines, and particularly relates to a husked rice separating machine which comprises a separating box. A discharge hole is formed in one side surface of the separation box; through the arrangement of the transmission mechanism, brown rice and rice can be quantitatively fed into the separation box through a discharging opening at intervals, a positioning ring is driven by a driving piece to reciprocate, a shifting block is intermittently in contact with a rack, the rack is pressed and moves downwards, the rack drives a transmission rod to rotate through a gear, and the transmission rod drives a screen plate to rotate; when the brown rice and the rice fall to the screen plate, the screen plate is in a horizontal state, the vibration motor operates to accelerate separation of the brown rice and the rice, then the angle of the screen plate is changed, the screen plate is inclined, discharging is conducted in the vibration process, the amount of the brown rice and the rice on the screen plate is small at the moment, and it is avoided that the rice is mixed with the brown rice after being separated; and then the screen plate rotates in a reciprocating mode, the angle is changed, and the angle of the screen plate can be controlled when brown rice and rice are separated.

The application provides an oil-gas suspension cylinder, an oil-gas suspension system and a vehicle, and belongs to the technical field of vehicles.The oil-gas suspension cylinder comprises a cylinder barrel which is a hollow cavity with openings at both ends, two piston rods with different cross-sectional areas are arranged at both ends of the cylinder barrel, a partition plate is arranged in the cylinder barrel, the partition plate divides the inside of the cylinder barrel into two independent first chambers, and the two piston rods are arranged in the two independent first chambers respectively; a second chamber and a fixed damper are arranged on the piston rod, and the fixed damper enables the second chamber to communicate with the first chamber. The double-piston rod with different cross-sectional areas is arranged, the large-diameter end is used as a heavy-load piston rod, and the small-diameter end is used as an empty-load piston rod; the empty-load piston rod can improve the pressure during empty-load operation due to the small cross-sectional area, so that the pressure is greater than the starting pressure of the suspension cylinder, the suspension cylinder is convenient to debug, and the problem that the diameter is too large due to the design according to the full-load load, resulting in extremely low empty-load pressure is solved.

The invention belongs to the technical field of laminated composite materials, and particularly relates to a Ti3Al-TiAl laminated composite material and a preparation method and application thereof. According to the method, the forged Ti3Al alloy and the forged TiAl alloy serve as raw materials, the Ti3Al-TiAl laminated composite material is prepared through the vacuum hot pressing and sheath hot rolling method, the room-temperature ductility and toughness of the composite material are improved, the high high-temperature performance (yield strength and tensile strength) of the composite material is kept, the size of the obtained Ti3Al-TiAl laminated composite material is (200-1000) mm * (80-500) mm * (1-5) mm, the room-temperature tensile strength reaches 900-1100 MPa, and the tensile strength of the obtained Ti3Al-TiAl laminated composite material reaches 90-100 MPa. The room temperature plasticity is 3%-6%, the fracture toughness is 35 MPa.m < 1 / 2 >-50 MPa.m < 1 / 2 >, the tensile strength at 800 DEG C can reach 650-800 MPa, the yield strength at 800 DEG C can reach 600-700 MPa, and the plasticity at 800 DEG C is 20%-30%. And the large-size and large-batch production requirements are met, and good application prospects are achieved.

An abnormal battery cell identification method and apparatus, an electronic device, and a storage medium. The identification method comprises: determining, on the basis of target feature data of a battery cell (11), whether or not the battery cell (11) has experienced a polarization abnormality, wherein the target feature data comprises feature data generated during battery cell formation and relating to battery cell polarization. On the one hand, since target feature data of a battery cell having abnormal polarization is distinctively different from target feature data of a battery cell without abnormal polarization during battery cell formation, it is possible to accurately determine whether or not the battery cell has experienced a polarization abnormality. On the other hand, since battery cell formation takes place before battery cells are assembled into a battery pack, a battery cell having abnormal polarization can be identified before the assembly, thereby reducing the risk of battery system performance deterioration and battery pack scrapping resulting from installing an abnormal battery cell.

This application provides a method and apparatus for identifying abnormal battery cell, an electronic device, and a storage medium. The method includes determining, based on target feature data of a battery cell, whether the battery cell is an abnormal battery cell; where the target feature data includes feature data used for differentiation between an abnormal battery cell and a normal battery cell generated during a formation process. On the one hand, as there is a clear distinction in target feature data between an abnormal battery cell and a normal battery cell during the formation process of battery cells, accurate determination of whether a battery cell is an abnormal battery cell can be achieved. On the other hand, since a formation process of a battery cell always occurs before the battery cell is loaded into a battery pack in an industrial production process, the purpose of identifying an abnormal battery cell before the battery cell is loaded can also be achieved, thereby reducing the risk of decreasing the battery system performance and scrapping the battery pack caused by loading an abnormal battery cell.

The application discloses a profile composite machine tool laser welding device and a use method, relates to the technical field of machine tools, and belongs to the technical field of machine tools.The laser welding device comprises a bed body, a vertical moving mechanism arranged on the upper portion of the bed body, a fixing seat arranged on the vertical moving mechanism, a rotating seat and a power mechanism arranged on the fixing seat, an adjusting mechanism and two supporting seats arranged on the rotating seat, a polisher arranged on one supporting seat, and a laser device arranged on the other supporting seat.In the process of welding a rotary body workpiece on a profile, the use method comprises the following steps: moving two clamping plates to the upper portion of the rotary body workpiece; moving the two clamping plates downward to clamp the rotary body workpiece; melting the end portion of a metal wire by the laser device, so that the rotary body workpiece is spot-welded with the profile; driving the rotating seat to rotate horizontally around the fixing seat by the power mechanism, and polishing a weld seam while welding the weld seam; and resetting each structure after welding and polishing are completed.The laser welding device can simultaneously perform laser welding operation and polishing operation, and is favorable for improving machining efficiency.

The application discloses a wind-cooled semi-closed electric threshing cylinder, which comprises a feeding section, a threshing section, a separating section and a power mechanism, the power mechanism comprises a supporting shaft and a wheel hub motor, the feeding section is composed of a conical cylinder and a spiral blade, the threshing section is composed of a cylinder and a first threshing element, the separating section is composed of a cylindrical frame and a second threshing element, the conical cylinder, the cylinder and the cylindrical frame are sequentially connected, the wheel hub motor is sleeved on the supporting shaft and fixedly connected with the conical cylinder, and the threshing cylinder further comprises a sleeve, air supply blades and air exhaust blades; the sleeve is coaxially sleeved into the cylindrical frame; a plurality of air exhaust blades are fixed on the outer diameter of the cylindrical frame and distributed on the outer periphery of the sleeve; the air exhaust blades are long strip-shaped plates with an arc; and the air supply blades are fixed on the inner wall of the sleeve and sleeved on the supporting shaft through bearings. The structure of the threshing cylinder is improved, so that the wheel hub motor in the cylinder can be timely cooled, hot air is used to dry straws, the grain loss rate during rice and wheat harvesting is reduced, and energy saving and emission reduction are achieved.