208results about How to "Improves Structural Integrity" patented technology

The invention relates to an integrally-formed hollow-structure Pick racket and a preparation method thereof, and belongs to the technical field of Pick rackets. The hollow cavity shell is filled with the foam core layer, an opening is formed in the hollow cavity shell, and the foam core layer is obtained by conducting heat treatment foaming on a foaming raw material; the method further comprises the following steps that an integrally-formed hollow cavity shell with an opening is obtained through a blow molding technology; the hollow cavity shell is filled with foaming raw materials; the filled hollow cavity shell is subjected to heat treatment, so that the foaming raw materials are foamed, expanded and fused in the shell, and a foam core layer tightly combined with the shell is formed; according to the Pick racket, an adhesive interface existing in a traditional spliced racket is structurally and thoroughly eliminated, the risk of adhesive failure and layering after long-term use or damp is fundamentally avoided, the structural integrity of the racket is greatly improved, and the durable life of the racket is greatly prolonged.

The invention relates to the technical field of sodium-ion batteries, in particular to a sodium-ion battery positive electrode material and a preparation method thereof. The sodium ion battery positive electrode material is Ti and Cl doped Na4VMn (PO4) 3, and the molar ratio of Na to Ti in the sodium ion battery positive electrode material is 4: (0.05-0.1); the molar ratio of Na to Cl is 4: (0.05-0.1). According to the sodium-ion battery positive electrode material provided by the invention, a titanium element and chlorine element synergistic co-doping mode is adopted, so that the ginger-Taylor distortion caused by manganese ions in the charging and discharging process can be inhibited, the lattice stress can be reduced, and the stability of the material structure can be enhanced; meanwhile, the dissolution of manganese under a high-rate cycle condition can be inhibited, and the loss of active substances and the side reaction of electrolyte are reduced, so that the electrochemical stability and the structural integrity of the electrode material are improved, and the sodium ion battery containing the positive electrode material has relatively high specific capacity, excellent rate capability and cycle stability.

The embodiment of the application discloses a low-illumination image enhancement method and device based on an improved normalized flow, which comprises the following steps: acquiring a low-illumination image to be enhanced; performing normalization processing on the low-illumination image to be enhanced to obtain a normalized spectrum; performing edge extraction processing on the normalized spectrum to obtain an edge spectrum; performing feature fusion on the low-illumination image to be enhanced, the normalized spectrum and the edge spectrum to obtain a feature fusion image; performing feature extraction on the feature fusion image by using a feature extraction module to obtain a feature extraction image; performing feature mapping on the feature extraction image by using a feature mapping module to obtain a feature mapping image; and inputting the feature mapping image into a normalized flow reversible network to output a normal-illumination image. The low-illumination image is enhanced by the method, and the enhancement effect can be improved.

The application belongs to the field of medical materials, and particularly relates to a metal core enhanced double-barrier piezoelectric nano system and a preparation method and application thereof. The preparation method comprises the following steps: first, a core-shell structure of'metal@mesoporous titanium dioxide@mesoporous barium titanate' is prepared through a step-by-step reaction, and then the target nanoparticles are obtained through lipid wrapping. The system innovatively constructs a double-barrier structure, can self-trigger active oxygen under a physiological pressure of 4 mmHg, realizes endogenous pressure self-driven treatment of malignant ascites, has the advantages of low pressure, high catalytic efficiency, long-term structural stability and good biocompatibility, solves the problems that existing treatment methods are highly invasive and depend on exogenous stimulation, and provides a new safe and efficient technical scheme for the treatment of malignant ascites.

The application relates to the technical field of battery materials. Disclosed are a lithium nickel-manganese acid positive electrode material, a preparation method thereof, a positive electrode and a battery. The lithium nickel-manganese acid positive electrode material comprises a base material and a first coating layer and a second coating layer successively coated on the surface of the base material; the chemical general formula of the base material is Li(Li a Ni b Mn c Fe d Sb e )O 4‑x , wherein a+b+c+d+e=2, 0<=x<=0.2, 0<=a<=0.1, 0.4<=b<=0.5, 1<=c<=1.5, 0.1<=d+e<=0.4; the first coating layer comprises NbTi(PO4)3, and the mass ratio of the first coating layer to the base material is 0.1-5:100; the second coating layer comprises a carbon material, and the mass ratio of the second coating layer to the base material is 0.1-5:100. The lithium nickel-manganese acid positive electrode material provided by the embodiment of the application has excellent electrochemical performance.

The invention discloses an opposite-pull assembly for a UHPC bent cap formwork, the UHPC bent cap formwork and a combined bent cap. The opposite-pull assembly comprises an opposite-pull rod and a pair of opposite-pull rod fixing pieces arranged on the tops of a pair of formwork webs correspondingly. The opposite-pull rod fixing piece comprises a pre-buried fixing plate fixedly arranged on the inner surface of a formwork web and a clamping plate fixedly arranged on the outer surface of the formwork web, and through holes allowing the opposite-pull rods to penetrate through are formed in the areas, exceeding the top of the formwork web, of the pre-buried fixing plate and the clamping plate. And the end parts of the opposite pull rods penetrate through the through holes in the pre-embedded fixing plate and the clamping plate, and are fixed through an inner fastener positioned on the inner surface of the pre-embedded fixing plate and an outer fastener positioned on the outer surface of the clamping plate. The opposite-pull rod is arranged above the top of the formwork web, the opposite-pull rod can be dismantled and reused, and the economic performance is good. And meanwhile, holes are not required to be formed in the formwork webs for mounting the opposite-pull rods, so that the structural integrity of the formwork webs is better, and the appearance is more attractive.

The invention discloses a composite fireproof heat insulation pad for a battery pack and a preparation method thereof, and belongs to the technical field of battery safety. The heat insulation pad is of a double-layer composite structure, the inner layer is a high-silicon-dioxide glass fiber needled felt heat insulation core layer, and the outer layer is a ceramic silica gel glass fiber cloth fireproof coating layer. The two layers are sewn into a whole through high-temperature-resistant sewing threads, and a back adhesive layer is arranged on one side of the two layers. The product provided by the invention has excellent fire resistance (can tolerate flame at 1000 DEG C for 30 minutes), excellent heat insulation, excellent flexibility and thermal shock resistance, and is convenient to install. The preparation process is simple, can be completed through cutting, wrapping and sewing and gum application, and is suitable for large-scale production. The product can effectively delay or prevent heat spreading in the battery pack, and the battery safety level of the new energy automobile is remarkably improved.

This invention discloses a method for preparing a graphene / silicon-carbon composite anode material. The method includes: firstly, preparing a carbon-coated silicon dioxide precursor via a hydrothermal reaction; then, converting it into a carbon-coated silicon material using a magnesothermic reduction method in the presence of sodium chloride, effectively inhibiting the aggregation and growth of silicon particles; finally, combining graphene with the carbon-coated silicon material through a secondary hydrothermal and calcination treatment to construct a conductive network. This invention, through a multi-level structural design, utilizes the synergistic buffering effect of the internal carbon layer and the external graphene to effectively alleviate the volume expansion of silicon during charging and discharging, significantly improving the conductivity and structural stability of the material. The prepared composite anode material exhibits high specific capacity and excellent cycle performance, making it suitable for lithium-ion battery applications.

The application relates to the technical field of sulfide catalytic materials, in particular to a modified high-performance cobalt-based sulfide catalytic material, a preparation method and application thereof, which comprises the following steps: S1. stirring cobalt nitrate hexahydrate and zinc nitrate hexahydrate dissolved in a modified solvent; S2. adding a precursor modifier drop by drop into the mixed solution for stirring, centrifuging and transferring to a drying box to obtain a modified precursor; S3. placing the modified precursor downstream of a tube furnace, placing a modified sulfur source upstream of the tube furnace, introducing inert gas for calcination, and finally obtaining the modified high-performance cobalt-based sulfide catalytic material after the temperature is reduced to room temperature. The synergistic effect of the modified solvent, the precursor modifier and the modified sulfur source can effectively regulate the electronic structure of the material, increase the surface defects and active sites, greatly improve the ORR / OER dual-function catalytic kinetic rate and reduce the reaction energy barrier. Meanwhile, the Co / CoS heterojunction interface constructed through the synergistic effect of the three can induce interface electron redistribution and strengthen the Co-S bond strength of the system.

The invention relates to the technical field of waste battery recovery, and particularly discloses a direct regeneration method of a high-performance waste lithium iron phosphate battery material. The materials comprise waste lithium iron phosphate, lithium carbonate, soluble salt corresponding to magnesium or titanium, graphene, a glucose reducing agent, an adaptive organic solvent and the like; the method comprises the following steps: pretreating the waste battery, calcining to prepare an oxidation precursor, respectively preparing an ion dopant solution and a graphene dispersion liquid, sequentially mixing the raw materials, carrying out wet ball milling, drying and inert atmosphere preheating, and synchronously carrying out oxidation precursor reduction, ion doping and graphene compounding through high-temperature reduction. The regenerated lithium iron phosphate material can be used in the fields of electric vehicle power batteries, high-end energy storage systems and the like, and has the advantages of excellent electrochemical performance, structural stability and compaction performance; the method provided by the invention has the advantages of controllable operation, flexible raw material adaptation and high-valued recovery of waste materials, and can effectively improve the performance shortages existing in the traditional process.

The application relates to the technical field of underwater robot vision processing, and discloses a GAN-based underwater robot image real-time repairing and target identification method. The method acquires an original image sequence obtained by an optical sensor of an underwater robot, extracts degradation features of each frame of image, including scattering noise distribution, color distortion parameters and motion blur intensity. The original image sequence is input into a network, and based on the degradation features, a repaired image is generated frame by frame, and local structure consistency features and global semantic coherence features of the repaired image are extracted. A cascaded classifier is used for multi-scale target detection of the repaired image, local structure features and global semantic features are combined, and a target boundary box and a category label are output. According to the spatial distribution density of the target boundary box, the priority of the repaired area is dynamically adjusted, and the synchronous output of the repaired result and the target identification result is realized. The method can effectively improve underwater image quality and target identification precision.

The invention relates to the technical field of welding devices, and particularly discloses a fresh air pipeline welding device for old community reconstruction, which comprises a placing base, a height adjusting device is fixedly connected to the top of the placing base, and first sliding sleeves are fixedly connected to the parts, positioned on two sides of the height adjusting device, of the top of the placing base; the fresh air pipeline welding device comprises a U-shaped connecting support, a first sliding sleeve is fixedly connected to the top of the U-shaped connecting support, a first sliding rod is slidably connected to the inner wall of the first sliding sleeve, an angle adjusting device is fixedly connected to the top of the U-shaped connecting support, a welding gun is fixedly connected to one side of the angle adjusting device, and clamping and fixing devices are fixedly connected to the top and the bottom of the U-shaped connecting support. The height adjusting device is arranged, so that fresh air pipelines of any height can be welded, the clamping and fixing device is arranged, so that two sets of pipelines needing to be welded can be clamped and fixed at the same time, and the problem of welding deviation caused by sliding due to unstable clamping is avoided.

The application discloses a prior feature auxiliary directional coordinate attention remote sensing road extraction method, and relates to the technical field of remote sensing image processing.The method comprises the following steps: extracting multi-source prior features representing road physical characteristics and optimizing and fusing weight to obtain a fused prior feature map; processing the RGB remote sensing image and the fused prior feature cooperatively to form a fused feature containing multi-scale semantic information and physical prior; predicting a pixel main direction angle in the feature through a directional coordinate attention mechanism, pooling the feature along the main direction and the orthogonal direction to generate an attention map and re-calibrate the original feature; performing step-by-step up-sampling on the decoder and introducing a deep supervision mechanism; and training the model by using a composite loss function containing a Dice loss, a Focal loss and a boundary perception loss.The application fully utilizes road physical characteristic prior knowledge, combines the directional coordinate attention mechanism to capture road geometric characteristics, and effectively improves the accuracy and integrity of remote sensing road extraction in a complex scene.

This invention discloses a highly corrosion- and weather-resistant silicate glass material and its preparation method, comprising the following components by weight: 60-80 parts of a main network component, which forms a silicon-oxygen network framework after melting; 5-15 parts of a network-modifying component, which is distributed within the silicon-oxygen network framework; 5-12 parts of a lattice-stabilizing component; 2-8 parts of a compacting reinforcing component; and 3-10 parts of a lattice-strengthening component, which are dispersed within the silicon-oxygen network framework to form a dense silicate glass matrix. This invention can improve the weathering resistance, groundwater erosion resistance, and long-term structural stability of the glass material, and enhance the internal purity and density of the glass matrix, meeting the needs of deep underground burial and long-term information preservation applications.

The invention discloses a preparation method and application of a degradable hydrogel solar evaporator with a surface microstructure, and relates to the technical field of interface evaporation materials. The invention aims to solve the problems that an existing solar evaporator is low in evaporation efficiency, difficult to recycle after alkaline wastewater treatment, easy to form solid wastes and lack of an in-situ degradation environment-friendly scheme. Functional groups capable of being subjected to hydrolysis reaction under alkaline conditions are introduced into a hydrogel network, and the evaporator with a specific geometric structure is constructed by utilizing a photocuring 3D printing technology, so that the evaporator keeps structural stability and high evaporation performance in a use stage, and can be degraded according to preset conditions in an alkaline environment; therefore, the evaporator can disappear controllably after being used. According to the method, the photocuring 3D printing technology is combined, accurate design of the macroscopic shape and the microstructure of the evaporator is achieved, the surface microstructure of the evaporator is one or more of a spherical structure, a prismatic table structure and a tree-shaped structure, and the evaporation rate can be increased.

The application provides a layered preparation method and system of a diamond heat sink sheet, and the method comprises the following steps: preparing a crystal direction anchoring microstructure on a growth surface of a substrate and a moment buffer layer on a non-growth surface; obtaining a first layer of diamond through crystal direction anchoring, and generating a reverse moment on the growth surface through the moment buffer layer; removing surface defects on the diamond surface to form an atomic level step; depositing a liquid metal on the atomic level step for stress release, and then removing the liquid metal; continuously growing a second layer of diamond, and accurately controlling the stress state of the second layer of diamond; and cooling to obtain a crack-free diamond heat sink sheet. Through the synergistic process design of the diamond layering construction and the reverse moment buffer, the application blocks the path of stress accumulation and crack initiation and expansion, effectively solves the cracking problem in the preparation process of the diamond heat sink sheet, balances the process feasibility and the product performance stability, greatly improves the yield and the structural integrity of the diamond heat sink sheet, and reduces the production cost.

The utility model relates to the technical field of pipe gallery pipeline supporting, and discloses a comprehensive support for an underground pipe gallery, which comprises a mounting arm, a plurality of corbels are arranged on the mounting arm from top to bottom at intervals, the upper part of each corbel is provided with a containing groove along the length direction of the corbel, each containing groove is internally and rotatably provided with a rotating roller, and the rotating rollers are arranged on the mounting arm. Wherein the rotating roller can move in and out of the accommodating groove; the pipeline conveying device can reduce friction resistance in the pipeline moving process, reduce pipeline abrasion and improve conveying efficiency, and is simple in structure, convenient to operate and use and high in practicability.

This invention relates to the field of lithium battery packaging materials technology, and discloses a flexible packaging film for battery cells and its preparation process. The flexible packaging film comprises a protective outer layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer, and a heat-sealing inner layer stacked sequentially, wherein a corrosion-resistant bonding layer is disposed between the aluminum foil layer and the second adhesive layer. The corrosion-resistant bonding layer is formed by curing and cross-linking a coating liquid containing a surface-functionalized graphene oxide-supported nano-layered zirconium phosphate composite on the surface of the aluminum foil. The heat-sealing inner layer is a multilayer co-extruded functional polypropylene film layer comprising an adhesive transition layer, a support layer, and a heat-sealing layer. By constructing a corrosion-resistant bonding layer at the aluminum foil interface and optimizing the multilayer structural design of the heat-sealing inner layer, the stability of the aluminum-plastic composite interface, the heat-sealing reliability, and the overall mechanical compatibility can be improved, thereby improving the comprehensive performance of the flexible packaging film for battery cells under high temperature, high humidity, and electrolyte contact conditions, making it suitable for the packaging of power batteries and energy storage batteries.

The invention provides an RGB-D image salient target detection method based on frequency decoupling mode interaction, and the method comprises the steps: firstly carrying out the multi-stage feature extraction of RGB-D mode data, and obtaining the multi-stage feature representation of an RGB-D mode; performing frequency domain sensing cross-modal interaction on the RGB-D modal multi-stage feature representation to obtain frequency sensing cross-modal spatial domain interaction features; discriminative enhancement and cross-modal fusion are carried out on the cross-modal spatial domain interaction features of frequency sensing, and final multi-modal fusion features are obtained; and based on the final multi-modal fusion features, through multi-scale aggregation and global dependence modeling, generating a saliency target detection prediction map. According to the method, cross-modal association in a frequency domain is explicitly modeled in a feature learning process by using a frequency cross Mama fusion module, so that the problem that internal relationships among modals may be ignored when fusion is directly performed in a spatial domain in a traditional method is remarkably relieved, and the performance and generalization ability of salient target detection are improved.

The application discloses a no-bending moment multi-hoisting point static-to-dynamic hoisting method and system, and belongs to the technical field of large structure hoisting. The method combines static mechanical planning before hoisting with dynamic closed-loop control during hoisting. Firstly, the hoisting points are calculated and adjusted to initial optimal positions according to module parameters. After hoisting, the force of each hoisting point and the module posture are monitored in real time, and the crane action and the hoisting point position are dynamically adjusted through a cooperative control system to realize force balance and posture correction, and finally the module is shifted, turned over and precisely positioned. The system comprises a servo-controlled crane, an adaptive sling with an adjustable hoisting point unit, a real-time monitoring system and a multi-hoisting point cooperative control system. The application actively suppresses the bending moment of the module during the whole hoisting process, and significantly improves the operation safety, precision and automation level.

The present application relates to the technical field of plastic extrusion molding, and discloses a drip irrigation belt anti-blocking performance strengthening production system and method, which comprises the following steps: providing a steady-state molten polymer base flow, and superimposing a periodic pulse flow on the base flow; and after the action of each cycle of the pulse flow, analyzing the real-time rheological properties of the molten polymer according to the pressure decay curve monitored by a pressure sensor, and then adjusting the control parameters of the subsequent pulse flow. The present application establishes a dynamic micro-forging molding mode, thereby avoiding the molding defects of the micro-channel of the drip head inside the drip irrigation belt. The process action and process sensing are integrated in the present application, so that the production system can actively adapt to the fluctuations in the physical properties of the raw materials, and finally the product obtains the anti-blocking property due to its internal structural integrity.

The invention discloses a laser power automatic adjusting method and system in a remote foreign matter removing process of a power transmission line, and the method comprises the steps: recognizing and positioning a foreign matter through an inspection image, analyzing the spatial position relation between the foreign matter and a power transmission line, preliminarily judging the contact state of the foreign matter, and outputting a contact risk level; analyzing the foreign matter, and constructing an initial thermal coupling risk parameter based on the contact risk level; controlling the laser to perform short-time irradiation on the foreign matter for a preset time length at the tentative power, and synchronously collecting thermal response characteristic information generated by the surface of the foreign matter in the irradiation process; based on the thermal response feature information, comparing with a preset thermal response reference model, dynamically judging the actual thermal coupling state between the foreign matter and the power transmission conductor, and correcting the initial thermal coupling risk parameter in real time according to a judgment result to obtain a corrected thermal coupling risk parameter; and according to the corrected thermal coupling risk parameter, gradually increasing the laser power of the laser to an effective clearing power interval so as to complete foreign matter clearing.

The application belongs to the technical field of lithium batteries, and provides an organic-inorganic compound thick electrode, a preparation method and application thereof. The organic-inorganic compound thick electrode comprises a current collector and an active coating. The active coating comprises an active material, a composite conductive agent and a composite binder. The active material is SPAN and LVP. SPAN endows the electrode with high specific capacity characteristics, and can significantly improve the energy density of the battery. LVP effectively compensates for the defects of SPAN in conductivity and structural stability due to its excellent crystal structure stability, high ionic conductivity and nearly zero volume change in the cycle process. Through the synergistic compound design of organic-inorganic materials, the advantages of the two materials are complementary and synergistic, which not only solves the kinetic bottleneck of SPAN, but also strengthens the structural stability of the thick electrode, and further constructs a new electrode system with high energy density, long cycle life and excellent rate performance.

The invention discloses a preparation method of a polyurethane gel product with a rapid shaping characteristic. The method comprises the following steps: firstly, synthesizing a special polyol monomer with the primary hydroxyl group content of 70-85% through a specific process, and then respectively preparing soft inner gel component prepolymers A and B and hard outer gel component prepolymers C and D; the method is characterized in that a combined pouring and stepped curing process is adopted, specifically, prepolymers A and B are mixed and then injected into a mold to be subjected to preliminary chemical curing to form an inner gel layer, then a mixture of prepolymers C and D containing photoinitiators is poured on the surface of the inner gel layer, ultraviolet irradiation is conducted immediately to achieve surface photocuring, and finally the product is obtained through overall thermocuring. According to the method, through molecular design, prepolymer synergy and process optimization, the technical problem that high elasticity and rapid forming are difficult to consider at the same time is solved, and the prepared gel product has the comprehensive advantages of being low in hardness, high in rebound rate, small in permanent deformation, high in interlayer binding force, short in forming period and the like.

The application discloses a low-volatility high-thermal-conductivity insulating silica gel composite material suitable for power batteries, characterized by comprising the following components in mass parts: 3-10 parts of vinyl silicone oil, 8-20 parts of liquid acrylic ester rubber, 95-105 parts of compounded thermal conductive powder, 0.3-0.5 parts of hydrogen-containing silicone oil, 0.02-0.04 parts of platinum catalyst, 0.02-0.05 parts of acetylenic alcohol inhibitor and 0.8-2.0 parts of silane modifier. The low-volatility high-thermal-conductivity insulating silica gel composite material adopts low-volatility vinyl silicone oil and liquid acrylic ester rubber as a composite matrix, can effectively coat the vinyl silicone oil at a very low content and the compounded thermal conductive powder at a high content, avoids problems such as sharp increase of dispersion resistance and particle agglomeration in the modification and subsequent mixing process of the thermal conductive powder, and can stabilize the thermal conductivity coefficient at more than 6.5 W / (m*K), the volatilization amount is less than 90 ppm, and can be used in the range of -40 DEG C to 200 DEG C.

The utility model relates to the technical field of welding heads, and provides an elastic floating type welding head which comprises a welding head body and a welding seat coaxial with the welding head body, the welding seat comprises a welding seat cylinder and a supporting piece arranged on the upper surface of the welding seat cylinder, an elastic piece is arranged in the welding seat cylinder, and the supporting piece abuts against the elastic piece. The supporting piece can ascend and descend in the height direction of the welding base cylinder. The elastic part is arranged for buffering when the supporting part is subjected to impact force, the welding seat can elastically float according to the actual stress condition of the metal part in the welding process, the sinking problem of the welding position of the metal part caused by rigid abutting is effectively solved, and therefore the beneficial effect that the surface structure integrity of the welding position is ensured is achieved.

The application discloses a micro-thermal battery activation device and relates to the technical field of micro-thermal battery activation. The device comprises a battery base body, a mounting seat is fixedly connected to the top of the battery base body, a filler is mounted at the bottom of the mounting seat, a plurality of ignition caps are inlaid between the filler and the bottom of the mounting seat, a circular ring seat is fixedly arranged in the mounting seat, a plurality of striking pins are vertically and slidably arranged in the surface circular holes of the circular ring seat through elastic members; three groups of force storage assemblies are arranged, each group of force storage assemblies corresponds to a group of trigger assemblies, the trigger conditions of the three groups of trigger assemblies are different, the force storage assemblies are matched with the trigger assemblies, multi-factor triggering in a complex environment is realized, the situation of activation failure is avoided, the force storage assemblies are in a non-force storage state in a non-triggering state, the spring is prevented from being in a stressed state for a long time, stress fatigue is avoided, and long-term preservation is more facilitated.

This invention discloses an ultrasound-assisted cryopreservation method for biological tissues or organs. It belongs to the field of biological tissue and organ preservation technology. This invention improves the distribution of cryoprotectants within biological tissues or organs by applying specific ultrasonic treatments under pre-freezing and / or post-freezing conditions, and reduces the impact on the structure of biological tissues or organs during rewarming, thereby improving the quality of cryopreservation of biological tissues or organs.

This invention discloses a welding device for a one-way explosion-proof valve body, comprising an adjustment component, a welding component, and a welding surface finishing component. The adjustment component is used to adjust the position of the welding surface finishing, and the welding component is used for adjusting and welding the valve body. The welding component includes a fixed plate fixedly mounted on the top of a fixed base and a first sliding rod fixedly mounted on the fixed plate. The welding surface finishing component is used to pre-treat the welding surface of the valve body at the position where it is welded to the flange. The welding surface finishing component includes a mounting plate, a transverse partition fixedly mounted on one side of the mounting plate, and side plates fixedly mounted on both sides of the transverse partition. This invention uses a rotating annular finishing strip to clean the welding surface of the valve body and the flange. The annular finishing strip fits tightly with the welding surface of the valve body, effectively removing oxide layers, oil stains, and impurities from the welding surface, improving the weld bonding strength, and avoiding affecting the subsequent assembly and sealing performance of the valve body.

The invention discloses a target head cover structure based on winding and needling processes and a forming method of the target head cover structure, and belongs to the technical field of composite material structure manufacturing. Comprising a head cap and a cover body, the head cap is inserted into the mortise of the cover body through the tenon and is sewn and fixed through sewing fibers; the head cap and the mask body are sewn and then jointly subjected to chemical vapor infiltration and reactive infiltration densification treatment, so that in a connecting interface area of the head cap and the mask body, sewn fibers and carbon and silicon carbide matrixes generated in situ in the densification process are interwoven and embedded, and a three-dimensional continuous enhanced interface structure is jointly formed. According to the structure, an independent physical interface formed by an adhesive or a mechanical connecting piece is eliminated at the joint of the head cap and the mask body, so that structural fusion of the head cap and the mask body is realized. According to the invention, through a synergistic process of joggling, sewing and co-densification, the integrated forming of the component is realized, and the integrity, the bearing capacity and the production efficiency of the structure are remarkably improved while the product consistency is ensured.