8results about How to "Reduce bridging" patented technology

The invention relates to the technical field of lithium ion battery materials, and provides a lithium iron phosphate positive electrode material, a preparation method thereof and a lithium battery. The preparation method of the lithium iron phosphate positive electrode material comprises the following steps: performing a first coprecipitation reaction on a first iron source solution and a first phosphorus source solution in the presence of a polymer monomer to obtain an iron phosphate seed crystal; performing a second coprecipitation reaction on the second iron source solution and the second phosphorus source solution in the presence of a polymer monomer and an iron phosphate seed crystal to obtain iron phosphate dihydrate; iron phosphate dihydrate, a lithium source and a carbon source are mixed and then subjected to spray drying, the mixture is placed in a rotary kiln to be sintered, carbon-coated lithium iron phosphate with the large particle size and carbon-coated lithium iron phosphate with the small particle size are prepared at different sintering temperatures respectively, and the carbon-coated lithium iron phosphate with the different particle sizes are mixed according to the mass ratio to obtain the lithium iron phosphate positive electrode material. The lithium iron phosphate positive electrode material has relatively good spherical morphology, so that the lithium iron phosphate positive electrode material has relatively high compaction density and electrical properties after grading.

A method for forming a semiconductor structure includes: providing a substrate, forming a material layer to be etched on the substrate, forming a plurality of mutually separated sacrificial layers on the material layer to be etched, and having a first opening between adjacent sacrificial layers; forming a sidewall material layer at the bottom of the first opening and the sidewall surface and the top surface of the sacrificial layer; forming a protective layer on the surface of the sidewall material layer; forming a first graphic layer on the protective layer, having a first graphic opening in the first graphic layer, and exposing one or more of the first openings in the first graphic opening; forming a barrier layer in the exposed first opening, the top surface of the barrier layer being lower than the top surface of the sacrificial layer; removing the protective layer; removing the sidewall material layer on the bottom surface of the first opening and the top surface of the sacrificial layer; removing the sacrificial layer, and forming a second opening between the remaining sidewall material layers. The present invention improves the stability and accuracy of graphic transfer, thereby improving the performance of the semiconductor structure.

The embodiment of the invention provides a stack packaging structure and a preparation method of the stack packaging structure, and relates to the technical field of chip packaging, the stack packaging structure comprises a wiring substrate, a structural chip, an adapter plate, a double-layer solder ball and a plastic package body, the double-layer solder ball is adopted, and a plurality of first supporting wire arcs are additionally arranged on a first bonding pad, so that the structure chip is not damaged; the first support wire arc is embedded into the outer coating layer, so that the bonding strength of the outer coating layer and the first bonding pad is greatly improved, the welding strength is effectively improved, and the bridging or pseudo soldering risk caused by substrate warping is reduced. And the solder of the outer coating layer is distributed more uniformly, and bridge connection caused by excessive overflow is avoided. Meanwhile, due to the supporting effect of the first supporting line arc, the inner core ball can be supported, the collapse phenomenon of the welding ball in the conventional technology is effectively relieved, the plastic package space is increased, and the plastic package hole phenomenon is relieved.

The present invention provides an automatic forming device for composite material special-shaped curved surface, comprising a machine tool conveying slide, a movable workbench, a mold, a visual inspection device and an upper mold lifting device; the mold is arranged on the movable workbench, the machine tool conveying slide conveys the movable workbench with the mold to the upper mold lifting device, and the visual inspection device detects the surface morphology of the prepreg on the mold during the conveying process, and the upper mold lifting device has a pair of rollers in the diaphragm frame, and the bottom of the diaphragm frame is fixed with a ductile diaphragm, and the pair of rollers is used to adjust the drape deformation of the diaphragm in the diaphragm frame according to the information detected by the visual inspection device, so that the size of the diaphragm used to compact the prepreg is adapted to the prepreg. The present invention obtains the position of the complex curved surface of the prepreg in the mold by detecting the inner surface morphology of the mold through the visual inspection device, and feeds back to the pair of rollers and adjusts the drape deformation of the diaphragm, so as to realize the pre-deformation of the diaphragm to the prepreg.

The invention discloses a garbage combustion device which comprises a combustion cavity, at least more than one fixed combustion fire grate is arranged in the combustion cavity, the fixed combustion fire grates are arranged in a step shape, and at least more than one first air blowing pipe connected with external aerodynamic force equipment is arranged on the fixed combustion fire grates. A first blowing hole communicated with the first blowing pipe is formed in the fixed combustion fire grate, and the first blowing hole is used for spraying high-pressure air flow from external pneumatic power equipment so as to blow garbage falling onto the fixed combustion fire grate, so that the garbage can move and fall on the fixed combustion fire grate step by step from top to bottom. The invention further discloses a vertical multi-stage garbage gasification furnace. The invention has the advantages of simple structure, low failure rate, large garbage treatment capacity, high combustion efficiency and the like.

The present application relates to the technical field of powder barrels, and particularly relates to a novel material barrel special for powder, which comprises connecting blocks one, telescopic air cylinders, a connecting plate, a long rod and a piston block; a plurality of connecting blocks one are arranged above a cylinder; one telescopic air cylinder is fixedly connected to each connecting block one; the telescopic ends of all the telescopic air cylinders are fixedly connected with the connecting plate; the long rod is connected to the connecting plate and passes through the middle of the cylinder; the lower end of the long rod is connected with the piston block, and the cylinder is blocked by the piston block. The long rod high-frequency drives the powder in the cylinder to break the "bridge" and "mouse hole" phenomenon of the powder, so that the powder can be smoothly discharged. Meanwhile, the long rod cooperates with the piston block to limit the cylinder with a downward tendency and prevent it from falling to the ground, so that the safety is high. In addition, the long rod and the piston block are also used to open and close the lower opening of the cylinder, and no other valve parts are needed, so that the structure is ingenious.

The utility model relates to the technical field of mixing bins, and discloses a gravity mixing bin structure which comprises a bin body, a central mixing pipe, a plurality of peripheral mixing pipes and a bottom ventilation pipe, the central mixing pipe is vertically arranged in the center of the bin body, the peripheral mixing pipes are evenly distributed on the circumference with the center of the bin body as the circle center and the radius of the bin body as the diameter, and the bottom ventilation pipe is arranged in the center of the bin body. Comprising an annular main body and a plurality of branches connected with the main body, the annular main body is arranged around the peripheral side of the bin body, the ends, away from the main body, of all the branches are inserted into the bin body, and the bottom ventilation pipe is used for introducing gas into the bin body. Compared with a traditional wall-attached type, the gravity mixing bin structure has the advantages that accumulation and bridging phenomena of viscous materials can be effectively reduced, and the mixing effect on the viscous materials is improved.

This utility model relates to the field of cyanuric acid processing technology, and in particular to a continuous crushing device for cyanuric acid processing, comprising a frame, on which a processing device is mounted for cyanuric acid processing. The processing device includes: a crushing component, comprising a housing fixed to the top of the frame, a shaft rotatably mounted inside the housing, a cutter head fixed to the outer wall of the shaft, and an arc-shaped mesh fixed to the lower end inside the housing; a driving component on the crushing component for driving the shaft to rotate; and a collecting component inside the frame for collecting the crushed cyanuric acid; and a feeding component, comprising a mounting plate fixed to the top of the housing, a hopper fixed to the top of the mounting plate, and several first rotating drums rotatably mounted inside the front end of the hopper; the first rotating drums cooperate with second rotating drums to assist material flow, achieving uniform and stable feeding of cyanuric acid inside the hopper, reducing bridging or rat hole phenomena, and improving feeding smoothness.