59results about How to "Avoid microcracks" patented technology

The invention provides 1900MPa-grade cold-rolled medium manganese steel and a preparation method thereof, and relates to the technical field of high-strength and high-toughness automobile steel. The thickness of the 1900 MPa-grade cold-rolled medium manganese steel ranges from 1.3 mm to 1.5 mm, and the 1900 MPa-grade cold-rolled medium manganese steel is prepared from, by mass, 0.22%-0.25% of C, 6.5%-7.5% of Mn, 1.2%-1.7% of Al, 0.7%-0.9% of Si and Plt. 0.005%, Slt; 0.02% of the total weight; and the balance of Fe and inevitable impurities. The preparation method comprises the steps of raw material preparation, smelting, casting, forging, hot rolling, two-phase region annealing, tempering, cold rolling, quenching and baking treatment. According to the invention, by optimizing the two-phase region annealing process and the quenching temperature, ultrafine-grained ferrite, austenite and martensite microstructures are formed, the strength of the medium manganese steel is greatly improved, the enough percentage elongation after fracture is ensured, and the performance requirements of automobile anti-collision structural components are met.

The invention provides a TC4 titanium alloy thin-wall slender structure liquid cooling plate brazing method, and belongs to the technical field of micro-channel heat exchange. The problems that according to an existing welding method for the TC4 titanium alloy thin-wall long and thin structure liquid cooling plate, the metal brazing connection performance is not stable, a connection interface has defects, and the flatness of the welded thin-wall liquid cooling plate is poor are solved. The thin-wall liquid cooling plate and the slender structural part are buckled and combined, metal foil type brazing filler metal is clamped between the thin-wall liquid cooling plate and the slender structural part to form a TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, a graphite pressing block A and a graphite pressing block B are combined and pressed on the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, and after being assembled, the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part are put into a vacuum furnace. According to the method, the one-time welding success rate is increased, meanwhile, the brazing seam quality is better, intermetallic compounds of the welding seam are uniform in welding seam microcosmic metallographic display, and the phenomena that the brazing seam is not resistant to pressure and prone to leakage are greatly reduced.

The invention belongs to the technical field of positive electrode materials, and particularly relates to an acid-washed carbon-coated lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. The invention provides a preparation method of a pickled carbon-coated lithium-rich manganese-based positive electrode material, which comprises the following steps: preparing a lithium-rich manganese-based precursor, pickling and sintering to prepare the pickled carbon-coated lithium-rich manganese-based positive electrode material, pickling with a pickling solution; the pickling solution comprises an acidic carbon-based material. The acid-washed carbon-coated lithium-rich manganese-based positive electrode material prepared by the invention has relatively high specific discharge capacity, initial efficiency and cycle retention rate.

The invention discloses a hollow glass polishing and press-fit fixing device, and relates to the technical field of glass manufacturing, the hollow glass polishing and press-fit fixing device comprises a hollow glass polishing device and a polishing control system, supporting plates are uniformly distributed and mounted on the outer side surface of a limiting and fixing assembly, and baffles are mounted on the outer side surfaces of the output ends of a plurality of electric telescopic rods; large round hollow glass slowly rotates, so that the edge is in contact with a grinding head for grinding, it is ensured that the large round hollow glass is always dynamic in the grinding process, the more uniform grinding effect is achieved, local excessive abrasion or uneven abrasion generated in the grinding process is avoided, the total grinding efficiency is improved, and the grinding efficiency is improved. By means of the grinding device, the working efficiency is higher, the shape is kept complete in the grinding process, the large round hollow glass can rotate more smoothly, the grinding process can be controlled more accurately, and the grinding device is particularly suitable for occasions needing high machining precision.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The application discloses a full-wrapping concrete truss structure and a construction method thereof, and belongs to the technical field of building structures. The full-wrapping concrete truss structure comprises a steel pipe truss assembly arranged between a plurality of steel plates, a wrapping assembly arranged outside the steel pipe truss assembly, and a concrete layer arranged outside the wrapping assembly. The construction method comprises the following steps: S1, preparing a top chord, a bottom chord, a vertical rod and a horizontal rod, wrapping the rods with a reinforcing mesh and welding to obtain a steel pipe truss shell; S2, arranging a diagonal web member assembly inside the shell and arranging a connecting mesh outside the shell to form a steel pipe truss monomer; S3, bolt connecting a plurality of monomers and bolt connecting the steel plates and the monomers at edges to form a steel pipe truss structure; and S4, vibrating the steel pipe truss structure after concrete partition pouring to obtain the full-wrapping concrete truss structure. The application can realize full wrapping of the steel pipe, ensure that the concrete layer is tightly bonded with the steel pipe, and improve the stability and safety of the structure.

This invention discloses a refractory high-entropy alloy resistant to high-temperature molten aluminum corrosion and erosion-wear, its preparation method, and its applications. The refractory high-entropy alloy of this invention comprises, by atomic percentage: 40-50 at.% Nb, 35-40 at.% Ti, 4-10 at.% Mo, 4.5-5 at.% Cr, and no more than 10 at.% Al. This invention obtains the refractory high-entropy alloy by mixing and melting the raw materials under a protective atmosphere. The refractory high-entropy alloy ingot of this invention has a single-phase BCC microstructure, exhibiting stable structure, good mechanical properties, and excellent resistance to molten aluminum corrosion and erosion-wear. The Nb-Ti-Mo-Cr based refractory high-entropy alloy resistant to molten aluminum corrosion and erosion-wear prepared using this invention can significantly improve the service life of components, reduce replacement frequency, and has high economic benefits.

The invention relates to an energy storage device and a power utilization system. The energy storage device comprises a shell, an electrode assembly, an end cover assembly and a binding piece, wherein the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity, the electrode assembly comprises a plurality of tabs and an electrode main body which are electrically connected, and the tabs and the electrode main body are arranged along a first direction; the end cover assembly is arranged on one side of the shell and used for sealing the containing cavity. The binding piece is positioned between the end cover assembly and the electrode main body; the binding piece is provided with a penetrating hole, and the penetrating hole penetrates through the two opposite surfaces of the binding piece in the first direction. The penetrating hole extends along a second direction, the plurality of tabs penetrate through the penetrating hole, and the first direction is intersected with the second direction; the penetrating hole is provided with a first side wall and a second side wall which are oppositely arranged in the second direction, and in the second direction, the distance between the first side wall and the second side wall is larger than the size of the ends, close to the electrode body, of the tabs.

The invention discloses a method for mechanically shaping superfine powder, and relates to the preparation field of particle size control and morphology control of glass superfine powder, and the method comprises the following steps: 1, conveying a primarily crushed powder raw material into a multi-stage turbo-type shaping cavity which is composed of a fixed wall and a high-speed rotor, and the high-speed rotor is provided with a shaping medium; 2, synchronously applying an impact, shearing and rolling composite force field; 3, treating for 5-30 minutes in a low-temperature environment from-50 DEG C to normal temperature; 4, monitoring the sphericity degree and the particle size distribution of the powder in real time through an online particle image analyzer; 5, collecting the sphericity gt through a cyclone separator; and 0.95 of the superfine powder finished product is obtained. The sphericity gt of the powder is produced; 0.95, the surface roughness is Rat; the sphericity degree of the traditional ball milling process is generally 1t; and 0.75, microcracks generated by impact crushing are avoided through the synergistic effect of shearing and rolling.

The invention belongs to the technical field of automobile part planing machining, and particularly relates to an automobile part in-shaft spline planing device which comprises a planing table, a side plate is fixedly connected to the planing table, a clamping mechanism used for fixing a workpiece is arranged on the side plate, a mounting ring is slidably connected to the upper end of the planing table in the horizontal direction, and the mounting ring is fixedly connected to the planing table. A planing piece is arranged on one side, close to the workpiece, of the mounting ring; and the intermittent planing mechanism is used for driving the planing piece to intermittently advance so as to avoid excessive loss of the planing piece. The intermittent planing mechanism is arranged, in the planing machining process, an annular plate is pushed through a strip-shaped tooth groove, planing machining of automobile parts is achieved, due to the fact that the pushing distance of a datum plate is smaller than that of the annular plate, the annular plate automatically moves by the distance of one station after being reset, and the machining precision of the automobile parts is improved. And therefore, when the annular plate and the planing piece are propelled next time, the planing piece is deeper into the workpiece, so that the planing piece intermittently planes the automobile parts.

The invention discloses a photoelectric co-packaging structure and a forming method thereof, and the forming method comprises the steps: providing a photon chip which comprises a first surface and a second surface which are opposite, and the first surface is provided with a bonding pad and an optical coupling port located at one side of the bonding pad; forming a protective layer covering the optical coupling port, wherein the protective layer exposes the bonding pad; after the protection layer is formed, forming a first welding bump on the bonding pad; an initial packaging panel is provided, the initial packaging panel comprises a third surface and a fourth surface which are opposite to each other, an electronic chip is arranged in the initial packaging panel, the third surface of the initial packaging panel is provided with a first wiring layer, and the electronic chip is electrically connected with the first wiring layer; inversely mounting the photon chip on the first wiring layer, and welding the first welding bump with the first wiring layer; an optical interface device is installed on one side of the photon chip, and the optical interface device is right opposite to the optical coupling port; and after the optical interface device is installed, the protection layer is removed, and the optical coupling port is exposed. And the optical coupling port is prevented from being damaged and polluted in the whole packaging process.

The application discloses an intelligent environment-friendly inflatable quick switch cabinet and a control method thereof, which comprises a gas tank and a vacuum circuit breaker pole arranged in the gas tank, and an insulation pull rod is arranged on the vacuum circuit breaker pole; the opening and closing of an arc extinguishing chamber contact is controlled through the insulation pull rod, so that the circuit is realized; a modular electromagnetic repulsion driving unit is mounted on the outer wall of the gas tank, and the modular electromagnetic repulsion driving unit is connected with the insulation pull rod through an output shaft penetrating through the gas tank; a capacitor group is connected with a coil, which is used for generating electromagnetic repulsion to push a repulsion disc after being electrified; the repulsion disc is rigidly connected with the output shaft, and is used for moving forward and backward under the action of the electromagnetic repulsion; the electromagnetic repulsion driving unit is isolated from the inside of the gas tank through the modular external hanging type setting, the physical breakpoint of the shell mounting interface blocks the conduction of high-frequency strain waves to the inside of the gas tank, the micro cracks of the insulation supporting part caused by mechanical impact in the environment-friendly gas environment are avoided, and the long-term insulation safety under the low dielectric strength is ensured.

This invention discloses a corrosion-resistant free-machining brass alloy, its preparation method, and its applications. The corrosion-resistant free-machining brass alloy is composed of the following components by mass percentage: Cu: 58.0~62.5%, Si: 0.3~1.2%, Ni: 0.1~0.5%, Mn: 0.3~0.7%, B: 0.005~0.025%, with the balance being Zn and unavoidable impurity elements, wherein the total content of unavoidable impurity elements is <0.3%. The brass alloy of this invention possesses excellent machinability, corrosion resistance, and mechanical properties, and is lead-free, meeting environmental protection requirements and satisfying the needs of various fields for brass alloy materials.

The present application relates to the technical field of aerated concrete preparation, and particularly relates to a method for preparing electrically conductive aerated concrete by using porous carbonized recycled aggregate and the aerated concrete. The process method first places pre-wetted recycled aggregate in a pressurized carbonization kettle, and industrial waste gas with CO2 concentration greater than or equal to 20% is introduced to react for 2-3 hours at 0.5-0.7 MPa and 60-70 DEG C to produce porous carbonized recycled aggregate. Then the porous carbonized recycled aggregate is dry-mixed with gel material, gypsum, conductive carbon black and reinforcing fibers, and then mixing water containing water reducing agent (water aggregate ratio 55-60%) is added to stir into base mortar. Then aluminum paste suspension is added to the mortar, and after stirring to start aeration, the mortar is poured into a mold. After 2-3 hours of static aeration, the mold is finally autoclaved and dried for 6-8 hours to obtain the electrically conductive aerated concrete. Through aggregate pretreatment strengthening, orderly dispersion of the conductive phase and hierarchical curing control, the present application can effectively solve the contradiction between light weight, high strength, electrical conductivity and durability, and provide a multifunctional green building material solution for airport construction.

The application discloses a carbon material cutting positioning table, a cutting equipment and a cutting process, and belongs to the technical field of carbon processing. The carbon material cutting equipment includes a carbon material cutting positioning table, a self-protection cutting mechanism and a vibration suppression protection mechanism. The application realizes coupling enhancement of positioning stability and vibration suppression efficiency in the cutting and processing of special-shaped carbon materials through deep cooperation of the material self-adaptive positioning mechanism, the special-shaped positioning assembly, the self-protection cutting mechanism and the vibration suppression protection mechanism. The overall technical effect of single mechanism independent operation is significantly better. The cutting edge collapse rate of the special-shaped carbon material is significantly reduced, the section quality is greatly improved, and automatic, self-adaptive and efficient precision cutting is realized.

The present application relates to a kind of preparation method of full solid battery double-layer ultrathin electrolyte film based on transfer printing technology.The present application utilizes the high voltage stability of halide layer and the high ionic conductivity of sulfide layer to synergistically improve the cycle life and high rate performance of battery and other performances through halide / sulfide double-layer electrolyte design.Further, the transfer printing process of multi-layer electrolyte film is designed specifically, and the gradient drying process can avoid substrate deformation, effectively prevent halide / sulfide interlayer cracking, and enhance the interlayer adhesion, achieving electrode thinning, high mechanical strength and interface stability.The present application solves the technical bottleneck of the application difficulty of double-layer electrolyte structure in full solid battery through material system optimization and transfer printing process innovation, and is suitable for the industrial production of high energy density solid state battery.

The invention provides a copper alloy wire with excellent heat dissipation performance and application thereof, and relates to the technical field of metal material processing. The preparation method of the copper alloy wire comprises the following steps: S1, preparing alloy liquid; s2, casting and cold drawing; s3, high-temperature annealing treatment; s4, surface coating treatment; and S5, stranding a plurality of strands. In the high-temperature annealing treatment, alloy element segregation is eliminated through accurate temperature control, uniform growth of crystal grains is guaranteed, alloy element segregation is effectively eliminated, uniform growth of the crystal grains is guaranteed, and therefore the overall performance of the copper alloy wire is improved. The surface of the copper alloy wire is coated with a nano oxide stable coating, so that the comprehensive performance of the copper alloy wire is improved. When the multi-strand copper alloy wire is pretreated, the low-friction coating is applied and the multi-strand copper alloy wire is stranded, so that the friction force between the wires is reduced, the wires are prevented from being damaged, the conductivity of the copper alloy wire in a high-temperature environment is effectively improved, and the service life of the copper alloy wire is prolonged.

The application discloses a method and device for automatically scraping off the insulating layer of an enameled wire, and belongs to the field of mechanical processing. The method comprises the following steps: the enameled wire is passed through a guide sleeve and tightly pressed on an adjustable positioning block, so that the enameled wire is axially fixed; a driving power source is driven to continuously rotate a cam 5; through the rotation of the cam 5, a compound motion cycle is synchronously controlled to be executed by a scraper mechanism; the compound motion cycle is repeatedly executed, and is matched with the periodic rotation of the enameled wire until the insulating layer is completely scraped off. The application can efficiently and completely remove the insulating layer under the premise of guaranteeing zero damage to the wire base, and simultaneously meets the requirements of high reliability and simple operation.

The invention relates to the technical field of metal component forming and manufacturing, in particular to a real-time lubricating liquid supplementing incremental forming tool which comprises a mirror image forming machining system, a six-degree-of-freedom mechanical arm, a forming loading tool head and a flange plate rotating chuck. The forming loading tool head comprises a spherical ball head cutter, a clamping outer sleeve, a conducting inner sleeve and a detachable fixing sleeve; the clamping outer sleeve is fixed on a flange plate rotating chuck of the mechanical arm to support the forming loading tool to work; the starting end of the inner sleeve is connected with an oil conveying pipe; the detachable fixing sleeve is used for fixing the spherical ball head cutter and conducting a lubricating oil path; and the spherical ball head cutter is subjected to forming loading under the lubrication effect. The method comprises the steps of tool positioning, blank hot forming and aging treatment of a preformed part, finally, a metal forming component is obtained, and the problems that in the prior art, when thin-wall metal plate complex local small feature forming is conducted, precision is low, a tool bit is prone to damage, collapse and cracking are prone to occurring, and the structure property is uncontrollable are solved.

This utility model provides an anti-breakdown corona silicone roller, comprising: a roller body, a support tube for quick installation of a silicone sleeve fixed to the outer side of the roller body by a fixing ring, a fixing ring respectively provided at the left and right ends of the roller body, a silicone sleeve fixed to the outer wall of the support tube, the support tube including two arc plates for fixing and supporting the silicone sleeve, and a connecting plate fixed to the upper and lower sides between the two arc plates respectively. Compared with the prior art, this utility model has the following beneficial effects: by setting a ceramic layer with a thickness of 0.2-0.5mm on the outer wall of the silicone sleeve, it helps to improve the service life of the silicone sleeve; by adding a support tube and fixing rings between the roller body and the silicone sleeve, the installation and removal of the silicone sleeve becomes simple, eliminating the need to spend a lot of time and multiple people to complete the installation and removal of the silicone sleeve, thus improving the convenience of installation and removal of the silicone sleeve.

The utility model belongs to mechanical or structure part static balance test technical field, concretely relates to airtightness detection mechanism for membrane electrode and airtight integrated machine using it, include: hydraulic drive position, detection position, pull rod guide pillar, pressure head traction plate, main hydraulic cylinder, upper pressure head, lower pressure plate seat, lower pressure plate, track assembly, pressure head traction plate swing joint in pull rod guide pillar, upper pressure head is connected in the downside of pressure head traction plate. The utility model through setting in pressure head traction plate, will main hydraulic cylinder and upper pressure head change into indirect connection, will lower pressure plate and multiple lower pressure plate seat contact fit, and track assembly sets up between two lower pressure plate seats, can maximize increase lower pressure plate and lower pressure plate seat contact area, reduce the pressure intensity of lower pressure plate bottom, make it can adapt 5Mpa's high pressure airtightness test, through the way of upper pressure head and lower pressure plate cover pressure to membrane electrode fixed, through blowing gas and detecting air flow fluctuation to judge whether there is gas leakage and then acquire airtightness.

The application discloses a half-ring magnetic core with an inclined angle and a sintering process thereof. The magnetic core in a green body state comprises a half-ring magnetic core body, a connecting bridge at an opening and an interface region between the two; the connecting bridge region is filled with a mixture of Mg powder and SiO2 powder and added with B2O3 sintering aids, and the interface region is filled with a bismuthate low-melting point glass powder with a melting point of 550-650 DEG C. During preparation, sectional atmosphere sintering is adopted, the connecting bridge is densified in advance through silicon thermal reaction to inhibit sintering deformation, meanwhile, the interface glass is used to isolate and reduce thermal stress to weaken the connecting bridge, and the connecting bridge can be removed at one time in an end face grinding process; the application solves the problems of large sintering deformation of the half-ring magnetic core, difficulty in removing the connecting bridge and high high-frequency loss, significantly improves the end face precision, high-frequency performance and splicing consistency of the magnetic core, and is suitable for industrialized production in the fields of 5G communication, new energy vehicles and the like.

The invention relates to the technical field of lithium ion batteries, in particular to a molybdenum-doped ultrahigh nickel positive electrode material and a preparation method and application thereof. The preparation method of the molybdenum-doped ultra-high nickel positive electrode material comprises the following steps: obtaining an ultra-high nickel precursor; carrying out first mixing treatment on a molybdenum source and the ultrahigh nickel precursor to obtain a molybdenum-doped precursor; and carrying out second mixing treatment on the molybdenum-doped precursor and a lithium source, and carrying out sintering treatment to prepare the molybdenum-doped ultrahigh nickel positive electrode material. Through bulk phase doping of the molybdenum element in the ultrahigh nickel positive electrode material, under the condition of not depending on an external coating layer, synergistic improvement of high specific capacity, long cycle life and high thermal stability of the material is successfully realized.

The application discloses a mold core conformal cooling water channel structure with a lattice structure, characterized in that the conformal water channel structure comprises a double-helix water channel structure and a lattice structure. The double-helix structure is used for cooling the side wall of the mold core, and a runway-shaped cross section is adopted; the top of the mold core adopts the lattice structure, and a cylindrical hole is arranged in the center of the mold core. Cooling water enters from two water inlets of the double-helix water channel, and flows out from the cylindrical hole after passing through the lattice structure. The lattice structure is formed by a unit cell array with a large porosity; the interfaces between the double-helix water channel and the lattice region are water inlets, and the included angle between the water flow emission angle and the horizontal angle is 30°. In order to facilitate powder cleaning and cooling water outflow, an inclined surface is arranged below the lattice region, the included angle between the inclined surface and the horizontal plane is 20°-30°, and the cylindrical hole simultaneously serves as a powder cleaning channel and a cooling water outlet.

The invention provides a low-resistance temperature coefficient precision resistance alloy and a preparation method thereof. The alloy comprises the following components: less than or equal to 0.04% of C, 1.30%-1.50% of Si, 0.30%-0.55% of Mn, less than or equal to 0.010% of S, less than or equal to 0.010% of P, 19.70%-20.50% of Cr, 3.40%-3.70% of Al, 0.60%-1.0% of Fe and the balance of Ni and inevitable impurities. The alloy has a low resistance temperature coefficient and is widely applied to the fields of aviation, aerospace and high-end instruments and meters. The manufacturing method comprises the steps that smelting is conducted in a vacuum induction furnace, a steel ingot is obtained through casting and vacuum consumable remelting, and then heating, forging and heat treatment are conducted on the steel ingot. In the smelting process, the alloy components are ensured to be accurate by controlling the pressure in the furnace, the oxygen and nitrogen content and the smelting time. And during forging, the temperature is slowly increased to 1050-1060 DEG C, heat preservation is conducted for 2-3 hours, and finally forging is conducted to the needed form. And finally, carrying out heat treatment to improve the mechanical property and the resistance temperature coefficient stability of the material. The manufacturing method can effectively improve the alloy performance, is suitable for production of precision resistor elements, and has a wide market prospect.

This invention belongs to the field of electrical ceramics technology, and relates to a carbon ceramic composite material, its preparation method, and a resistor sheet. The composite material uses clay and kaolin as the ceramic matrix, introduces submicron graphite as the conductive phase, and incorporates nano-ceramic reinforcing powder. It is prepared through multi-stage wet mixing, spray drying granulation, and pressureless sintering under an inert atmosphere. The preparation method involves first pre-treating the material at medium temperature under vacuum to remove moisture and organic matter, followed by high-temperature sintering under inert gas protection to obtain a uniform and dense carbon ceramic composite matrix, on which electrodes and a high-resistivity layer are formed. Through the dispersion strengthening effect of the nano-ceramic reinforcing powder and the synergistic control of process parameters, the microstructure of the material is effectively improved, significantly increasing the compressive and flexural strength of the resistor sheet, reducing the risk of mechanical failure caused by electro-thermal-mechanical shocks during transportation and service, and making it suitable for use in high-voltage and ultra-high-voltage circuit breaker closing resistors.

This invention provides a fiber optic anti-loss coupling device and a method for multi-hole deployment in coal mines, belonging to the field of coal mine safety monitoring technology. Based on a PVC pipe with grooved outer wall and external and internal threads at both ends, and a grooved anti-bending guide assembly, this invention provides a fiber optic deployment device and method for drilling holes. It is suitable for the efficient and reliable deployment of distributed acoustic sensing (DAS) microseismic monitoring optical cables in coal mines, especially addressing the needs for improved bending resistance, tensile strength, and coupling quality of bottom-hole optical fibers under cement slurry sealing conditions. By improving the PVC pipe structure, guide structure, and sealing / sealing process, low-loss and high-coupling-efficiency fiber optic deployment in mines is achieved.

The utility model provides a kind of controller structure, including upper shell, lower shell, upper layer circuit board, lower layer circuit board, upper layer circuit board is connected on lower layer circuit board, lower layer circuit board is connected on lower shell, lower layer circuit board is integrated with lower layer component and power tube, lower shell main body is fixed on radiator, lower shell main body is between upper shell and radiator, upper flow-through groove is set up in the side of lower shell main body towards radiator, upper inlet and upper outlet respectively communicated with the two ends of upper flow-through groove are set up on the side wall of lower shell main body, lower flow-through groove adapted with upper flow-through groove is set up in the side of radiator towards lower shell main body, lower inlet and lower outlet respectively communicated with the two ends of lower flow-through groove are set up on the side wall of radiator, first interface is formed between lower inlet and upper inlet, second interface is formed between lower outlet and upper outlet, first interface and second interface are used to connect with the cooling system of vehicle, reach the purpose of improving heat dissipation.

The application relates to the technical field of battery material processing, and discloses a lithium battery negative electrode material processing equipment, which comprises a supporting table, four fixed rods one are fixedly connected to the top of the supporting table, a hydraulic cylinder is arranged at the top of the supporting table, the top of the four fixed rods one is fixedly connected with the bottom of the hydraulic cylinder, an electric telescopic rod is started to extend, a connecting rod and an extrusion ring are pushed to ascend, gas in an extrusion ring-shaped groove is extruded, meanwhile, the extrusion ring drives a fixing frame to ascend, pushes a gas injection assembly to move, the left side of a gas blocking rod is separated from a gas outlet groove, at this time, high-pressure gas in the ring-shaped groove is sprayed around the graphite block, the adhesion between the graphite block and a forming hole is reduced, the graphite block and the inner wall of the forming hole are separated, the pushing force during demolding of the graphite block is reduced, the graphite block is effectively prevented from being caused to have microcracks due to excessive pushing force during demolding, the cracks caused by high temperature during graphitization are avoided from being increased, and the integrity of the graphite block during graphitization is ensured.