40results about How to "High thickness consistency" patented technology

The invention discloses a lithium metal interface modification method and a lithium metal battery, and the modification method comprises the following steps: carrying out surface treatment on lithium metal to obtain treated lithium metal; adsorbing the modification liquid by adopting a carrier material; placing the carrier material adsorbing the modification liquid on the treated lithium metal surface; applying a preset pressure to the carrier material; and removing the carrier material, standing and drying to obtain the lithium metal containing the artificial solid-liquid interface. The modification liquid is adsorbed to the surface of the lithium metal by adopting the carrier material, and the carrier material and the lithium metal are tightly attached through pressure, so that the modification liquid and the lithium metal can be fully subjected to in-situ chemical reaction, and the ASEI film on the modified lithium metal surface is uniform in thickness and relatively high in flatness; according to the lithium metal surface modification method, the thickness consistency and component distribution consistency of the lithium metal artificial solid-liquid interface can be improved, the modified lithium metal interface can effectively inhibit growth of lithium dendrites, and the cycle life of a lithium metal battery is prolonged.

The embodiment of the invention provides a battery pole piece detection control system which can improve the yield of pole pieces. The pole piece detection control system is applied to the pole piece coating system, the pole piece coating system comprises an unwinding device, a first surface coating device, a first surface drying device and a winding device which are arranged in sequence, and the pole piece detection control system comprises a first detection device, a second detection device, a second detection device and a control device, the first detection device is used for detecting the size of a to-be-coated area on the first face of the pole piece base material output by the unwinding device, and the first face is perpendicular to the thickness direction of the pole piece base material.

The invention relates to the technical field of leather processing, in particular to a leather forming processing device for automotive trim. The device comprises a pretreatment device and a mold device, the rear side of the mold device is connected and provided with a trimming device, the front side of the mold device is connected and provided with a heating device, and the mold device is internally provided and connected with a cooling device. The pretreatment device is used for improving the quality and the processing efficiency of leather, improving the consistency of products and effectively shortening the production cycle, the mold device is used for forming the leather, ensuring the size accuracy and effectively improving the consistency of the products, and the heating device is used for softening the leather, facilitating subsequent processing, improving the process effect and effectively improving the quality of the products. The cooling device is used for rapidly cooling leather, stabilizing the size and effectively improving the product precision, the trimming device is used for finely adjusting the leather and improving the finished product quality, and the safety monitoring device is used for guaranteeing the safety of the machining process and effectively improving the operation safety.

The application belongs to the technical field of spraying, and particularly relates to a spraying tool and a spraying device for cylindrical workpieces. The spraying tool comprises a frame body, a transmission chain, a plurality of chain wheels, a driving system and a plurality of columnar positioning structures. The plurality of chain wheels are rotationally arranged on the top of the frame body, the transmission chain is engaged with the plurality of chain wheels to form a closed conveying route, the driving system is drivingly connected with at least one chain wheel, and the plurality of columnar positioning structures are distributed along the upper side of the transmission chain. The columnar positioning structure is used for inserting and fixing the cylindrical workpiece in an upward positioning posture. The spraying tool realizes vertical insertion and continuous conveying of the cylindrical workpiece, effectively avoids the shaking problem caused by single-point suspension of the traditional suspension tool, and significantly reduces the risk of collision between the workpieces and the collision of the spray gun. Meanwhile, the workpiece is sprayed in a vertical posture, which is beneficial to uniform distribution of the paint and improves the consistency of the coating thickness.

The invention belongs to the technical field of semiconductor manufacturing, and particularly relates to a manufacturing method of a semiconductor device and the semiconductor device, and the method comprises the steps: manufacturing a first wafer which comprises a base layer and a target structure layer, the first side of the base layer is provided with an accommodation groove, and the target structure layer is partially or completely located in the accommodation groove; dividing the target structure layer into a normal area and a deviation area according to the height of the upper surface of the target structure layer relative to the first side; according to the deviation of the height of the deviation area on the first wafer relative to the height of the normal area, the volume of the accommodating groove corresponding to the deviation area on the second wafer is correspondingly designed; and manufacturing a second wafer, wherein at least the part of the target structure layer of the second wafer and the part of the target structure layer of the first wafer are manufactured under the same process condition. By increasing or reducing the volume of the accommodating groove on the second wafer, the height of the upper surface of the target structure layer can be controlled, the film thickness consistency of the target structure layer is improved, and the yield of the semiconductor device is improved.

The application provides a method for optimizing microstructure of a neodymium-iron-boron magnet rapid solidification sheet by using ultrasonic waves, and belongs to the technical field of neodymium-iron-boron alloy rapid solidification casting sheet. The application applies ultrasonic vibration on a copper roller by using an ultrasonic wave introduction device while the copper roller is rotating, then neodymium-iron-boron alloy melt is cast onto the surface of the copper roller to obtain a neodymium-iron-boron magnet rapid solidification sheet; the initial driving frequency of the copper roller is accurately designed and the amplitude is limited during the casting process, so that the nucleation rate of the magnetic phase grains near the roller surface of the rapid solidification sheet is increased, the growth of the magnetic phase grains in the direction from the near roller surface to the far roller surface is promoted, the magnetic phase columnar crystals are effectively refined, and the uniformity of the microstructure and the thickness consistency of the rapid solidification sheet are significantly improved, so that the effects of improving the nucleation rate and inhibiting the growth of coarse crystals are achieved, and finally the rapid solidification sheet with refined columnar crystals and good orientation is obtained.

The invention provides an adjusting method of a double-sided polishing machine table. The method comprises the following steps that a double-face polishing machine table is provided, the double-face polishing machine table comprises an upper disc and a lower disc, an inner gear ring and an outer gear ring are arranged between the upper disc and the lower disc, and the opposite surfaces of the upper disc and the lower disc are covered with polishing cloth; measuring an inner gap distance and an outer gap distance between the upper disc and the lower disc to obtain a gap difference value; a group of grinding wheels are arranged between the upper disc and the lower disc; in the step, the vertex linear speed of the inner edge and the outer edge of the upper disc and the vertex linear speed of the outer edge and the vertex linear speed of the lower disc are adjusted by adjusting the rotating speed of the outer gear ring, the rotating speed of the inner gear ring, the rotating speed of the lower disc and the rotating speed of the upper disc, and the higher linear speed corresponds to the higher polishing cloth thinning speed. Therefore, the internal and external thickness difference of the polishing cloth is adjusted. According to the method, different internal and external removal amounts of the polishing disc to the polishing cloth are adjusted by adjusting the rotating speeds of the outer gear ring, the inner gear ring, the lower disc and the upper disc, and the thickness difference of the polishing disc is corrected through the thickness difference of the polishing cloth.

This invention discloses an automatic planning method and system for spraying paths of 3D workpieces based on visual point clouds, specifically relating to the field of automatic spraying path planning technology. By constructing a spraying space coupling description set and a spraying deployment constraint index, the method achieves a quantitative characterization of the degree of restriction of spraying space in different surface areas. Combined with the safety margin of spraying distance and the adjustable range of spray gun posture, a physical accessibility assessment quantity for spraying is formed, which automatically divides the spraying area into a stable spraying area, a restricted spraying area, and a physically unsprayable area. Thus, in the path generation stage, differentiated strategies such as continuous spraying, segmented compensation, and path reconstruction are adopted for different areas, which significantly improves the coating coverage integrity, thickness consistency, and process reliability of complex 3D workpieces in the actual spraying process. It also enhances the system's adaptability to structural complexity and working condition changes in real coal mining machinery spraying sites and reduces the risk of manual repair and rework.

The utility model discloses a rolling device and battery manufacturing equipment, the rolling device is used for rolling a pole piece, and the pole piece comprises a film coating area and a pole lug. The rolling device comprises a pair of rollers. A plurality of annular grooves which are distributed at intervals in the axial direction of each roller are formed in the roller surface of each roller, each annular groove is formed around the central axis of the corresponding roller, and a rolling section is formed between every two adjacent annular grooves. Wherein the diameter of the rolling section is gradually reduced from the middle of the rolling section to the two ends of the rolling section in the axial direction of the roller. The rolling device can improve the quality of the pole piece and improve the reliability of the battery monomer.

The invention discloses a method for realizing water temperature difference adjustment by automatically adjusting water quantity of a crystallizer, and belongs to the technical field of continuous casting of ferrous metallurgy. According to the technical scheme, default cooling water flow of the wide face and the narrow face of the crystallizer is set according to the continuous casting pulling speed (the pulling speed larger than or equal to 1.3 m / min and the pulling speed smaller than 1.3 m / min are set in two gears); the water inlet and outlet temperature difference of the wide surface and the narrow surface is monitored in real time; when the wide surface temperature difference is larger than 9 DEG C, the wide surface water volume is gradually increased step by step, the water volume is 50 L / min every time, the interval is 1 min, and the pulling speed is reduced by 0.1 m / min if the water volume still exceeds the limit after two times of adjustment; when the temperature difference of the narrow surface is greater than 9 DEG C, increasing 30 L / min every time at an interval of 1 min, and reducing the pulling speed if the limit is still exceeded after two times; keeping the water quantity unchanged when the temperature difference is less than or equal to 9 DEG C; and a visual warning signal is sent out when abnormity occurs. According to the method, dynamic partition accurate adjustment of the cooling water amount is achieved, a multi-stage protection mechanism of increasing water first and then decreasing speed is established, surface cracks of the casting blank are remarkably reduced, and the hot delivery rate and production safety of a casting machine are improved.

This invention discloses a multi-dimensional rotary coating device and control method. The coating device includes: a base with multiple rotating shaft assembly mounting positions and a rotation center on the base, so that the multiple rotating shaft assembly mounting positions can rotate around the rotation center via the base; multiple turntable mechanisms, each turntable mechanism including a rotating shaft assembly and multiple turntable assemblies, each turntable assembly having a stop part and multiple product mounting seats to be coated; multiple turntable assemblies sequentially passing through the rotating shaft assembly, the rotating shaft assembly being mounted on the rotating shaft assembly mounting positions, thereby driving the turntable assemblies to rotate around the rotating shaft assembly; and multiple stop rods, each stop rod corresponding to a rotating shaft assembly mounting position, with the stop part abutting against the stop rod, so that the multiple product mounting seats to be coated can rotate on their own when the turntable assembly rotates. The advantages of this invention are: achieving multi-dimensional rotation; simple structure, achieving rotation without power; modular design, flexible expansion.

The application provides a diaphragm, a single battery and an energy storage device. The diaphragm comprises a base film, the base film has a first surface and a second surface arranged opposite to each other; a point coating glue layer, the point coating glue layer comprises a plurality of point coating parts, the plurality of point coating parts are arranged at intervals on the first surface; and a roller coating glue layer, the roller coating glue layer is arranged on the second surface.

This invention discloses a large-area uniform coating control method based on a dynamic-static combined optimization strategy. Addressing the technical problems of uneven film thickness and poor film consistency in existing large-area coating processes, this method combines the dynamic movement mode of the coating target with the static positioning optimization of the substrate and the precise control of static parameters of the coating environment to construct a dynamic-static synergistic coating control system. Simultaneously, it introduces strategies such as zoned coating compensation, real-time film thickness monitoring feedback, and dynamic adaptation of motion trajectory to achieve uniform deposition of coating materials on the surface of large-area substrates, effectively improving the film thickness consistency, film uniformity, and film performance stability of large-area coatings. This method is convenient to operate, provides precise control, and is compatible with various coating processes such as magnetron sputtering, vacuum evaporation, and ion plating. It can be widely applied to large-area coating production in fields such as flat panel displays, photovoltaic glass, semiconductor wafers, and large-area optical devices.

The invention relates to the technical field of aluminum foil processing, in particular to a method for eliminating stripes on the surface of 3003 cathode foil, which comprises the following steps of: 1, adding a cold material into electrolytic aluminum water for smelting to obtain an aluminum alloy melt; 2, refining and slagging-off are conducted; step 3, turning down and refining in a holding furnace; step 4, filtering and degassing; 5, cast rolling is conducted; sixthly, primary cold rolling and edge cutting are conducted; seventhly, secondary cold rolling is conducted; step 8, annealing; and ninthly, the annealed blank is subjected to foil rolling and slitting in sequence, and a finished product with the thickness being 0.02-0.03 mm is obtained. According to the method, the components, the proportion, the production process and parameters of the aluminum alloy melt are regulated and controlled, and surface stripes of the aluminum alloy finished product are eliminated on the premise that the mechanical performance and the specific volume of the aluminum alloy finished product are not reduced.

The invention relates to the technical field of electrode plate manufacturing, and provides electrode rolling machining equipment and a machining process. The first compression roller, the second compression roller and the third compression roller are sequentially arranged on the machine tool at intervals; a first forming gap is formed between the first compression roller and the second compression roller, a first transfer gap is formed between the second compression roller and the third compression roller, the width of the first transfer gap is smaller than that of the first forming gap, and the width of the first transfer gap and the width of the first forming gap are configured to be that an electrode diaphragm is pressed when passing through the first forming gap and is thinned after passing through the first forming gap; and the thickness is not changed after passing through the first transfer gap. According to the technical scheme, the problems that in the prior art, due to uneven powder thickness distribution, electrode diaphragms of adjacent gaps become thinner, the thickness is uneven, and the consistency and stability of products are reduced are solved.

The invention discloses a roller press and a stretching and rolling method for a lithium ion battery pole piece. The roller press comprises an unwinding mechanism, a first clamping and stretching mechanism, a roller mechanism, a second clamping and stretching mechanism and a winding mechanism which are arranged in sequence, the roller mechanism comprises an upper roller and a lower roller, the distance and the rolling pressure of the upper roller and the lower roller are adjustable, the upper roller is a straight roller, and the lower roller is a radian roller; roller bosses with a heating function are arranged on the surfaces of the upper roller and the lower roller; and pinch roll bosses are arranged on the surfaces of the pinch rolls in the first pinch stretching mechanism and the second pinch stretching mechanism. According to the invention, the phenomenon that the edge of a pole piece is overpressed due to deflection can be relieved through the lower roller with the cambered surface, so that the thickness consistency of rolling is improved, a good stretching effect on a pole lug can be achieved through the pinch roller boss and the roller boss, and the heating device on the roller boss is used for heating the roller boss, so that the quality of the pole piece is improved. Therefore, the tab is heated and softened and is easier to stretch.

The utility model provides a kind of forming device after banburying machine discharging, it is related to the technical field of rubber processing device, and it includes: the feeding port of double-cone feeding assembly is connected with the material after mixing of banburying machine, the discharge port of double-cone feeding assembly is communicated with the one end of extrusion die head, the other end of extrusion die head is towards the slit of three-roll calender, the discharging side of three-roll calender is connected with slitting assembly by conveyor belt, and full-cutting machine is arranged on the side, away from three-roll calender, of slitting assembly;Edge material recovery component is arranged below slitting assembly, for sending the excess edge material back into double-cone feeding assembly, solve the technical problem of inconsistent parameters of output billet, low efficiency of half-cutting machine in prior art, achieve the technical effect of quickly changing the rubber discharged from banburying machine into flat surface, thickness uniformity sheet.

The present invention provides a battery manufacturing method and a battery, belonging to the field of battery technology, wherein the battery manufacturing method comprises: assembling a core pack, a top cover and an outer shell to form a battery body; pre-treating the outer surface of the battery body; spraying insulating powder on the outer surface of the pre-treated battery body by a powder spraying process, and curing to form an insulating layer; baking the cured battery body, and injecting electrolyte after baking. The battery manufacturing method provided by the present invention directly pre-treats, sprays insulating powder and cures on the surface of the assembled battery body, eliminating the process of coating the outside of the battery, and the process is simple, improving the processing efficiency and processing quality of the insulating layer. When the powder spraying process is performed, the battery body is not charged, the powder spraying process is safer, and a high-temperature curing method can be used to improve the processing efficiency. The high-temperature curing process will not affect the electrolyte, ensuring the battery quality.

The invention relates to an online automatic flat film thickness adjusting die head and an adjusting method thereof.The online automatic flat film thickness adjusting die head comprises a front die body and a rear die body, and a melt runner is formed between the front die body and the rear die body; a front lip and a rear lip are respectively arranged at the lower ends of the front mold body and the rear mold body, a lip gap is formed between the front lip and the rear lip, and heating pipes are uniformly inserted in the front mold body and / or the rear mold body at intervals along the width direction of the flat film; by adjusting the temperature of the heating pipe in the corresponding area, the fluidity of the melt in the area is changed, and the thickness of the flat film flowing out of the area corresponding to the lip seam is adjusted. According to the invention, the local heating temperature is independently controlled, and the viscosity and fluidity of the melt in the corresponding area are changed, so that the discharging amount of the lip seam is finely adjusted to adjust the thickness of the flat film. The adjustment mode based on thermal expansion and rheological properties can realize continuous, stepless and trace thickness adjustment, and can effectively cope with production occasions with extremely high requirements on film thickness uniformity.

The invention discloses a packaging method and a packaging structure, and the method comprises the steps: providing a substrate which comprises a chip region and a non-chip region, and comprises a first side and a second side which are opposite to each other; a chip is provided, the chip is arranged on the first side of the substrate, and the chip is located in the chip area; an isolation film is formed on the first side of the substrate, the isolation film covers the first side surface of the non-chip area and the side wall surface and the top surface of the chip, and the isolation film extends to the first side surface of the non-chip area from the side wall surface of the chip; a packaging layer is formed on the first side of the substrate, the packaging layer covers the surface of the isolation film, and the method for forming the packaging layer comprises the steps that the dosage of a packaging material is obtained according to the thickness of the chip and the thickness of the isolation film, and the packaging layer is formed through a compression molding technology. The thickness consistency of the packaging structure formed by the packaging method is improved, the reliability of the packaging structure is high, the size of the packaging structure can be regulated and controlled, and miniaturization of the packaging structure is facilitated.

The present application relates to the technical field of blade processing, and provides a blade reinforced slurry hanging process, which comprises the following steps: S1, preparing modified slurry, adding ion responsive polymer material into silica sol slurry to obtain modified slurry; S2, dipping the blade wax mold into the modified slurry and performing slurry draining treatment; S3, sprinkling refractory sand on the surface of the modified slurry; S4, sending the blade with completed sand sprinkling into an air mist instantaneous setting channel, so that cross-linking ions in the air mist and the ion responsive polymer material are cross-linked to form a gel sand locking layer on the surface of the modified slurry to fix the refractory sand; S5, performing drying treatment on the blade; S6, repeating steps S2 to S5 to form a multilayer shell; S7, performing dewaxing and baking on the shell, so that organic components in the gel sand locking layer are pyrolyzed and lost and a microporous structure is formed on the surface of the shell; and S8, using the baked shell to perform metal casting.

The invention relates to the technical field of batteries, and discloses a lithium ion battery formation method, comprising the following steps: setting the initial thickness T0 of the battery, the first target thickness T1 of the battery, performing the first stage formation on the battery, setting the temperature C1, the current A1 and the time t1 of the first stage formation; performing the second stage formation on the obtained battery, setting the second target thickness T2 of the battery, raising the temperature of the second stage formation to C2, keeping the temperature for a time t2, and increasing the current of the second stage formation to A2; performing the third stage formation on the obtained battery, setting the third target thickness T3 of the battery, raising the temperature of the third stage formation to C3, keeping the temperature for a time t3, and increasing the current of the third stage formation to A3; performing the fourth stage formation on the obtained battery, setting the fourth target thickness T4 of the battery, lowering the temperature of the fourth stage formation to C4, keeping the temperature for a time t4, and reducing the current of the fourth stage formation to A4. The method can improve the thickness consistency, capacity consistency and cycle performance of the battery after formation.

The application discloses a filament laying head TCP dynamic compensation method and system based on internal displacement sensors, and relates to the technical field of intelligent manufacturing. The method comprises the following steps: obtaining a digital model of a target mold and a filament laying scheme, extracting mold geometric features and determining an ideal trajectory of a tool center point of the filament laying head; establishing a data-driven correction thickness model to determine the correction thickness by taking the mold geometric features and the current number of laid layers as inputs, and superimposing the correction thickness on the ideal trajectory to generate a corrected trajectory; combining the deviations of the mold geometric features, the ideal trajectory and the corrected trajectory, and determining the dynamic compensation air pressure through a compensation air pressure decision model based on Gaussian process regression; controlling the bonding pressure according to the dynamic compensation air pressure, and collecting measured thickness data through an internal displacement sensor of a pressure roller to perform closed-loop updating on the correction thickness model. The application realizes accurate control of the interlayer thickness and online adaptive adjustment of the air pressure in the complex curved surface filament laying process, and improves the laying quality of the composite material component.

The invention belongs to the technical field of dental prosthesis manufacturing, and particularly relates to a denture processing-based rapid glazing device which comprises a first rack and a second rack, two supporting plates are fixedly arranged at the upper end of the second rack, two conveying belts are arranged between the two supporting plates in a transmission manner, and a plurality of supporting plates can be sequentially placed on the two conveying belts at intervals; a distributor is arranged above the position between the two supporting plates in a sliding mode, a plurality of spraying pipes are arranged at the bottom of the distributor, an elastic net pipe is arranged outside each spraying pipe, each elastic net pipe is of a hollow structure, the bottom of each elastic net pipe is open, and a coating film is arranged in each elastic net pipe; when the false tooth is glazed, the material spraying pipe sprays the glaze on the surface of the false tooth after atomizing the glaze and sprays part of the glaze on the coating film, and when the coating film is glazed, the coating film moves up and down and uniformly coats the glaze on the surface of the false tooth. The problems that according to existing glazing equipment, the uniformity of a false tooth glaze layer is poor, the conveying stability of a supporting plate is poor, and glaze residues are difficult to remove are solved.

The invention relates to a samarium-cobalt alloy throwing sheet and a preparation method thereof, and a samarium-cobalt magnet and a preparation method thereof. The preparation method of the samarium-cobalt alloy throwing sheet comprises the steps that samarium-cobalt alloy liquid obtained through smelting is poured to a rotating melt-spinning wheel, and the samarium-cobalt alloy throwing sheet is obtained; the pouring power comprises four stages of sequentially reduced pouring power, the first pouring power is (M / 3-20) KW-(M / 3 + 20) KW, the second pouring power is (M / 4-20) KW-(M / 4 + 20) KW, the third pouring power is (M / 5-20) KW-(M / 5 + 20) KW, the fourth pouring power is (M / 6-20) KW-(M / 6 + 20) KW, M represents the maximum loading mass of the vacuum rapid hardening furnace, and the unit is kg. According to the preparation method provided by the invention, the thickness uniformity and the structure consistency of the samarium-cobalt alloy throwing sheet are effectively improved, and a samarium-cobalt magnet prepared from the throwing sheet is high in performance consistency and high in yield and has a wide application prospect.

This application provides a negative electrode sheet and its preparation method, a secondary battery, and a battery pack. The negative electrode sheet includes a negative current collector, and at least one side of the negative current collector has a negative active material layer. The negative active material layer includes a negative active material and a binder. The binder includes a copolymer formed by polymerizing acrylonitrile and acrylic acid. Based on the content of the copolymer, the molar percentage of acrylonitrile is 80% to 90%, and the molar percentage of acrylic acid is 10% to 20%.

The invention discloses composite multi-layer stable plate extrusion equipment and an extrusion method thereof, and relates to the field of composite plate production and processing.The composite multi-layer stable plate extrusion equipment comprises a first extruder and a second extruder, the first extruder and the second extruder extrude two melts used for producing a composite multi-layer stable plate respectively, and a plate discharging machine is used for flattening the melts and forming a preliminary plate blank; one end of the extrusion die is connected with the first extruder, the other end of the extrusion die is connected with the plate discharging machine, one side of the extrusion die is connected with the second extruder through a movable connector in a bent state, and the extrusion die is used for compounding the two melts according to a set proportion and then guiding the two melts to the plate discharging machine. The extrusion die formed by combining multiple layers of structures is designed, a five-layer composite board structure which sequentially comprises the middle layer, the two interlayers and the two outermost layers from inside to outside is formed, and the nail-holding power of the board is improved; the two interlayers and the two outermost layers are uniformly stressed in the flowing process, so that the material fusion quality is effectively improved.

This invention relates to the field of tire manufacturing equipment technology, specifically to a control system and method for the coordinated control of the feeding roller and forming drum in tire rubber strip winding. The system includes core control, signal acquisition, drive execution, and auxiliary support modules, forming a closed-loop architecture through electrical connections. The core control module uses a 1ms operation cycle PLC and an industrial SD card. The signal acquisition module integrates a tension sensor, a laser displacement sensor, and an incremental encoder. The drive execution module includes a dual servo system, a floating roller, and a tension roller mechanism. The control method achieves master-slave axis synchronization through real-time calculation using electronic gears, performs roll diameter compensation based on volume conservation, employs a feedforward + feedback dual-layer control, and combines a tanh-type S-surface controller to correct tension and floating roller position errors. It adapts to independent parameter settings and inter-layer error clearing for multi-layer winding. This invention improves the rubber strip bonding accuracy and thickness consistency, enhancing system adaptability and production reliability.

The invention discloses a forming method of a semiconductor structure. The forming method comprises the steps of forming a first oxide layer on a substrate; forming a sacrificial layer on the first oxide layer of the second region, wherein the sacrificial layer exposes the first region; forming a second oxide layer on the first oxide layer exposed out of the sacrificial layer, wherein the second oxide layer covers part of the side wall of the sacrificial layer; the sacrificial layer and the first oxide layer located at the bottom of the sacrificial layer are sequentially removed by adopting an anisotropic etching process, so that an opening is defined by the side walls of the first oxide layer and the second oxide layer in the first region and the top surface of the substrate in the second region; and forming a third oxide layer on the substrate at the bottom of the opening, wherein the top surface of the third oxide layer is lower than the top surface of the second oxide layer. According to the embodiment of the invention, the width of the slope formed on the side wall of the opening is reduced or the slope is eliminated, the steepness of the side wall of the opening is improved, and the performance of the semiconductor structure is correspondingly improved.

The invention relates to the technical field of electronic device powder packaging, and provides a high-precision powder packaging machine which comprises a lifting hanging frame, a heating box and a powder box which are sequentially arranged from top to bottom, the heating box comprises a box body and a circulating fan installed on the box body, and a heating channel for electronic devices to pass through is formed in the center of the box body; a cavity is formed between the inner wall and the outer wall of the box body, a heating element is arranged in the cavity, an air inlet is formed in one end of the inner wall of the box body, an air outlet is formed in the other end of the inner wall of the box body, and the circulating fan sucks airflow in the heating channel into the cavity from the air inlet and discharges the airflow into the heating channel from the air outlet, so that circulating hot air is formed in the heating channel. A dynamic heating environment is formed, and the heating uniformity of the electronic device is improved, so that the thickness consistency of insulating powder adhered to each part of the electronic device is improved, and the encapsulating precision of the electronic device is improved.