49results about How to "Improve organization" patented technology

This invention provides a method for preparing titanium anode substrates for electrolytic copper foil. The specific steps are: Step 1, preparing titanium anode substrate ingots through two melting processes; Step 2, forging the prepared titanium anode substrate; Step 3, rolling the forged titanium anode substrate. The specific effects of this invention are: the titanium anode substrate prepared by the above method for preparing titanium anode substrates for electrolytic copper foil exhibits significantly improved microstructure and properties, and the enhanced lifespan of titanium anodes produced using this process is significantly increased. This process is relatively simple to operate, requires minimal equipment, and reduces the production cost of titanium anode substrates. It also increases the practical application and operability of this process.

The invention discloses a method for improving the structure and performance of a 6063 aluminum alloy formed through selective laser melting, and belongs to the technical field of selective laser melting. Titanium powder and zirconium hydride in a certain proportion are selected as doping agents, the doping agents are evenly mixed with 6063 aluminum alloy powder through a ball milling method, and then drying and dehumidification are conducted; and the mixed alloy powder is put into selected-area laser melting equipment, manufacturing is carried out on the surface of a base material under inert gas protection, and the 6063 aluminum alloy is obtained after laser, scanning, powder laying and deposition. According to the method, the microstructure and the mechanical property of the selective laser melting forming 6063 aluminum alloy are obviously improved, so that the selective laser melting forming 6063 aluminum alloy meets the industrial performance requirement of SLM, and good market competitiveness is achieved.

A high-alloy steel electroslag ingot and its homogenization method are provided, comprising the following steps: S1, electroslag ingot pretreatment: removing surface oxide scale and crack defects, and grinding to a surface roughness Ra≤6.3μm; S2, staged heating: heating to 800-900℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1000-1100℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1200-1300℃ at a rate ≤150℃ / h and holding for 10h. -20h; S3, Stepped cooling: Turn off the heating device and cool with the furnace to 800-1000℃, hold for 2-6h; cool to 500-650℃ at a rate of ≤50℃ / h, hold for 2-6h; open the furnace door and introduce cooling air at a speed of 0.5-3m / s to cool to room temperature, obtaining homogenized high-alloy steel electroslag ingots; S4, Post-homogenization testing: the relative standard deviation of each alloying element is ≤5%; the average grain size is ≤10μm; the Brinell hardness fluctuation range is ≤15HBW. This invention eliminates component segregation, refines grain structure, optimizes process parameters, is highly efficient and energy-saving, easy to promote, and has strong practicality.

The invention discloses a high-silicon aluminum alloy ingot rapid cooling forming die and technology, and relates to the technical field of forming dies, the high-silicon aluminum alloy ingot rapid cooling forming die comprises an inner die, and the inner die is provided with a containing groove; the outer mold sleeves the outer peripheral side of the inner mold in an up-down sliding manner, a plurality of cooling grooves are formed in the outer peripheral side wall of the outer mold, the cooling grooves are vertically and adjacently arranged, the vertically adjacent cooling grooves communicate with one another, and the groove widths of the cooling grooves are gradually reduced from top to bottom; the supporting frame is used for supporting the outer mold; the lifting piece is arranged on the supporting frame, and the lifting piece controls the inner mold to slide up and down; the temperature sensor is arranged at the position, close to the bottom, of the outer mold, and the temperature sensor senses the temperature of the outer wall of the inner mold; and the controller is arranged on the supporting frame, and the controller is electrically connected with the temperature sensor and the lifting piece. The cooling speed of aluminum ingots in the aluminum ingot mold can be increased.

The utility model relates to the field of electronic equipment, in particular to a variable channel type heat dissipation cold plate which comprises an end cover and a heat dissipation cavity which jointly form a three-section type heat dissipation channel. The heat dissipation channel sequentially comprises a first heat dissipation channel section with the large width, a second heat dissipation channel section with the large width and a third heat dissipation channel section with the small width in the flow direction of cooling airflow. The first heat dissipation channel section is provided with a plurality of large-diameter hollow heat dissipation columns which are filled with phase change materials, the third heat dissipation channel section is provided with small-diameter solid heat dissipation columns which are densely arranged, and airflow transition is achieved between the first heat dissipation channel section and the third heat dissipation channel section through a flow guide plate of the second heat dissipation channel section; through the design of the differentiated heat dissipation columns, large-flow rapid heat dissipation is achieved in the first channel section, and the turbulence effect is enhanced in the third channel section; the heat dissipation efficiency and the temperature uniformity are remarkably improved by combining the transient heat absorption characteristics of the heat conduction boss in direct contact with a heat source and the phase change material; the structure is compact, and is especially suitable for heat dissipation requirements of high-power-density electronic equipment.

The application discloses a creep-resistant die-casting rare earth magnesium alloy with high strength and high fluidity, and a preparation method and application thereof. The application belongs to the field of die-casting magnesium alloys. The magnesium alloy comprises, in percentage by mass, Al: 4.8-7.2%, La: 3.0-4.2%, Sm: 1.2-2.0%, Y: 0.4-1.2%, Mn: 0.1-0.6%, Te: 0.01-0.1%, Bi: 0.01-0.5%, and the balance of Mg and inevitable impurity elements. The application significantly refines the structure of the magnesium alloy by optimizing the alloy composition, changes the composition, distribution and morphology of intermetallic compounds in the alloy, simultaneously generates Al-Te phases stable at high temperatures, improves the mechanical properties and creep resistance of the magnesium alloy, and further improves the die-casting fluidity of the magnesium alloy, so as to meet the requirements of large-scale integrated design automobile parts.

The application provides a preparation method of high-purity low-alloy ultrahigh-strength steel rods, and adopts LF refining+RH circulation degassing+vacuum consumable smelting double synergistic smelting process, cooperates with accurate optimization of full-process chain parameters and multi-pass forging-heat treatment synergistic process, realizes synergistic control of gas removal and inclusion floating of the molten steel through design of the molten steel circulation parameters of RH degassing and the molten pool convection parameters of vacuum consumable remelting, refines the grains and optimizes the structure, and prepares the 300M steel rod with high purity and excellent strength-toughness matching, so that the tensile strength is maintained at 1930-2070 MPa, and the fracture toughness breaks through the technical bottleneck that the purity and the mechanical properties are difficult to be considered at the same time in the traditional process.

The present application relates to a kind of low-carbon low-alloy welding wire and its preparation and welding method, belong to welding material technical field, solve the existing welding wire for high-strength material welding when easily produce hot crack, pore, coarse grain and other defects and weld metal's strength and low temperature toughness is insufficient, with the problems such as poor performance matching of base material.The present application provides a kind of low-carbon low-alloy welding wire, the component in the welding wire is as follows according to mass percentage: C 0.04~0.08%, Si 0.30~0.50%, Mn 1.6~2.0%, Cr 0.15~0.35%, Ni 3.5~4.0%, Cu 0.008~0.01%, Mo 0.007~0.01%, V 0.0005~0.001%, Ti 0.02~0.07%, Al 0.01~0.018%.The welding wire is designed by component, significantly improve the mechanical properties and low temperature toughness of welded joint, especially suitable for the welding of P690QL2 steel;Combined with the welding method of use, welding performance is better.

The application relates to the field of metal materials and discloses a 2.2GPa-grade grinding steel rod and a preparation method thereof. The steel rod is composed of C: 0.45%-0.55%, Mn: 4.5%-5.5%, Cr: 0.45%-0.55%, Mo: 0.15%-0.25%, Si: 0.45%-0.55%, V: 0.025%-0.035% and the like. The preparation method of the steel rod is a one-heat forming rolling process, and square hole, oval hole and round hole progressive rolling is adopted in finish rolling. The one-heat forming rolling process adopts medium-carbon high-manganese component design, improves the plasticity and toughness matching property of the matrix, reduces the full austenitizing temperature of the steel grade due to high Mn, provides an ample deformation time window for the one-heat forming, avoids grain coarsening defects caused by multiple high-temperature heating and the like, and makes the three-stage hole type act in sequence, so that the rolled piece experiences complex stress in the direction alternation, a larger cumulative strain is obtained, and the grain structure is refined.

The present application relates to the technical field of surface strengthening in water conservancy and power industry, and particularly relates to a kind of water turbine surface coating on-line fast maintenance of cavitation erosion resistant wire and on-line fast maintenance method based on it.The present application is specially made of nickel-chromium band coated high-tungsten flux-cored wire, and the main components of the wire are W, Cr, Si, B, Mn, Nb and the balance of Ni, which can be adapted to handheld laser welding machine operation.The supporting maintenance method is carried out in sequence, including failure layer polishing and shaping, cleaning and impurity removal, 150-250 DEG C preheating pretreatment, then using handheld laser welding machine with the wire, through limiting laser power, welding speed, wire feeding speed and overlap amount parameters, layer-by-layer cladding repair, finally through heat preservation and slow cooling, surface polishing and shaping to complete the maintenance.The present application can realize on-line in-situ fast repair of water turbine component cavitation erosion damage, and the cladding layer has dense structure, high bonding strength, excellent cavitation erosion and wear resistance, effectively solves the problem of low repair efficiency and on-site maintenance in prior art, and is suitable for on-site maintenance of hydroelectric equipment.

The application discloses a forming method and device for thick-wall corrosion-resistant alloy pipe with yield strength of 100 steel grade, which comprises the following steps: smelting an electroslag ingot by an electric arc furnace and electroslag remelting; taking scrap steel and alloy as raw materials, smelting an electrode billet by EAF+AOD+LF+VD, and then smelting the electroslag ingot by electroslag remelting. The forming method and device for thick-wall corrosion-resistant alloy pipe with yield strength of 100 steel grade adopts the process route of combining optimized components, electroslag ingot, hot expanding, hot extrusion and cold working to produce thick-wall corrosion-resistant alloy seamless pipe, so that the purity of the alloy is improved, the grain is refined, the solid solution treatment of the strong cold process optimizes the organization and straightness, and the hot expanding and hot extrusion improve the surface quality and the qualified rate of the hollow pipe. The thick-wall corrosion-resistant alloy seamless pipe with yield strength of 100 steel grade produced by the application has high size precision, good surface quality, small internal grain, stable mechanical properties, high strength and high toughness and good corrosion resistance.

The invention relates to the technical field of target materials, in particular to a high-stability tungsten oxide target material for intelligent dimming glass and a preparation method of the high-stability tungsten oxide target material for the intelligent dimming glass. The modified element is at least one of Nb, Ta and Sn; the doping amount of the modified element is 0.5%-5% of the mass of the tungsten oxide matrix. The doping elements (such as Nb < 5 + > and Sn < 4 + >) are similar to W < 6 + > in radius, a stable solid solution is formed, lattice distortion in the ion circulation process is inhibited, microcracks are reduced, and conductivity is enhanced.

This invention discloses a high-elongation cast Al-Cu-Zn-Mg alloy with good resistance to hot cracking. The alloy composition, by mass percentage, includes: Cu 3.5–4.5%, Mg 0.4–1.5%, Mn 0.2–0.5%, Ti 0.10–0.2%, Zn 2.5–3.5%, with the balance being Al and unavoidable impurity elements. Addressing the limitations of existing Al-Cu casting alloys, such as wide solidification temperature range, poor fluidity, and hot cracking, this invention provides a high-Zn-content Al-Cu-Zn-Mg alloy with good resistance to hot cracking. This alloy has a low melting point, a narrowed solidification temperature range, and excellent resistance to hot cracking and mechanical properties. It can be used for various high-strength cast aluminum alloy structural parts, effectively avoiding casting defects such as hot cracking, shrinkage cavities, and porosity, and significantly improving the overall mechanical properties of the alloy.

The application belongs to the technical field of aluminum matrix composite material preparation, and particularly discloses a method for preparing aluminum matrix composite material by plasma-assisted melting. The method comprises the following steps: heating and melting pure aluminum or aluminum alloy to obtain a melt; delivering argon into a reaction cavity of a plasma torch, ionizing the argon into plasma by applying a voltage, and forming a plasma jet into a temperature control device; inputting reinforcing body particles in a gas-solid two-phase flow into the temperature control device to contact and mix with the plasma jet, and forming a plasma / argon / reinforcing body particle three-phase mixed jet; adjusting and controlling the temperature of the three-phase mixed jet, and passing the three-phase mixed jet into the melt through a conduit to act on the melt; pouring the melt after slag removal treatment to form a blank, and obtaining the aluminum matrix composite material. The method utilizes the three-phase mixed jet formed by the argon plasma and the gas-solid two-phase flow of the reinforcing body particles to act on the aluminum alloy melt, so that the aluminum matrix composite material which is clean, uniformly dispersed, has good interface bonding and has significantly improved performance can be prepared.

This invention discloses a low-cost rare earth weathering steel and its production process. The chemical composition and mass percentage of the weathering steel are as follows: C 0.06%~0.12%, Si 0.25%~0.50%, Mn 0.60%~1.00%, P 0.07%~0.12%, S≤0.005%, Cu 0.15%~0.40%, Cr 0.30%~0.50%, Ce 0.002%~0.015%, Alt 0.020%~0.050%, Ti 0.02%~0.08%, N≤0.006%, with the balance being Fe and unavoidable impurities. This weathering steel uses rare earth oxides added to refining slag, and a high-alkalinity, low-oxidizing refining process to improve rare earth yield. Rare earth inclusions and nozzle turbulence are modified through calcium-magnesium composite treatment, achieving rare earth micro-alloying to replace high-alloy additions. While meeting the mechanical properties and high corrosion resistance of 355MPa grade weathering steel, it significantly reduces alloy costs by more than 15% compared to traditional weathering steel. The process flow is compatible with existing production lines and is suitable for industrial mass production.

This application discloses a hot-rolled wide coil of 60Si2Mn spring steel and its preparation method. The preparation method includes: heating the continuously cast slab; the furnace inlet temperature is greater than 500℃; the atmosphere in the furnace is a weakly reducing atmosphere; the heating time is 120-150 min; the heating temperature is 800-1200℃; the heated slab is subjected to rough descaling; the rough descaling pressure is greater than 200 MPa; the rough descaling rate is 1-3 m / min; the rough descaled slab is subjected to rough rolling; 5 passes are used; the thickness of the rough rolled slab is 30-40 mm; the rough rolled slab is subjected to finish rolling; 7 passes are used; the finishing rolling temperature is 800-860℃; the thickness of the finished strip is 1.8-6.0 mm; the finished strip is subjected to laminar flow cooling using a rapid front-end cooling mode; the laminar flow cooled strip is coiled; the coiling temperature is 580-650℃; the coiling tension is 50-60 MPa. The preparation method can produce hot-rolled wide coils of 60Si2Mn spring steel with excellent microstructure and properties.

This invention discloses a lazy loading method and system for image data based on WebWorker, comprising: in response to a user's viewing operation of a DICOM file, obtaining a series list of the DICOM file; and according to the series list of the DICOM file, obtaining metadata for each series in the series list; wherein, after the metadata of the first series in the series list is obtained, an instance image of the first series is automatically loaded according to the metadata of the first series; after the metadata of the remaining series in the series list is obtained, an instance image of the series is loaded only according to the metadata of the series when the user views a specific series among the remaining series in the series list. This invention enables on-demand loading, avoiding the unnecessary resource consumption caused by traditional full loading.

The utility model relates to the technical field of food processing equipment manufacturing, in particular to dough kneading and tendon beating equipment. The working table top is assembled with the rack by means of a hinge component. The material containing barrel, the stirring assembly and the stirring power part cooperate to achieve dough kneading and rib beating actions and are all borne by the working table top. In the dough kneading and rib beating process, the working table is horizontally supported on the rack, and flour and water are fully mixed and stirred in the material containing barrel under the action of continuous stirring force; after gluten bodies are formed, the working table is overturned under the action of overturning torque, in the process, the material containing barrel is converted into a horizontal state from a vertical state, the gluten bodies can automatically slide out of the material containing barrel under the action of gravity and do not need to be manually taken out, and therefore the labor intensity of workers is reduced, and the working efficiency is improved. The phenomenon that gluten bodies are polluted due to manual operation is avoided, and an automatic production line can be easily organized.

The application provides an aluminum alloy plate and a preparation method thereof. The preparation method comprises the following steps: S1, first heating a first ingot to 280-320 DEG C and then first holding for 0-8 hours to obtain a second ingot; S2, second heating the second ingot to 380-420 DEG C and then second holding for 0-6 hours to obtain a third ingot; S3, third heating the third ingot to 435-465 DEG C and then third holding for 4-16 hours to obtain a fourth ingot; S4, sequentially performing fourth holding and hot rolling on the fourth ingot to obtain the aluminum alloy plate; the temperature of the fourth holding is 430-460 DEG C; when cold rolling is performed after the hot rolling, intermediate annealing is performed in the process of the cold rolling. The preparation method shortens the production cycle, and makes the dispersed phase stably precipitate, improves the processability of rolling and the uniformity of the final plate structure.

This invention discloses a 5052 aluminum alloy cavity for semiconductor devices and its preparation method, relating to the field of aluminum alloy material technology. Specifically, it includes the following steps: S1: First, the 5052 aluminum alloy ingot undergoes a two-stage homogenization treatment, followed by a three-stage free forging process, and finally, spray cooling and air drying to obtain a shaped cavity substrate; S2: After plasma cleaning, the shaped cavity substrate is subjected to magnetron sputtering technology to sequentially deposit a transition layer, a barrier layer, and a functional layer on its inner surface to obtain the 5052 aluminum alloy cavity for semiconductor devices. The 5052 aluminum alloy cavity prepared by this invention can greatly ensure the stability and purity of the prepared aerospace semiconductors, meeting the manufacturing needs of high-performance chips for aerospace applications, and is of great significance.

The present application belongs to the field of TiAl intermetallic compound, and relates to a TiAl alloy composition and a preparation method of high-performance TiAl alloy low-pressure turbine blade. Based on a TiAl alloy composition, the alloy is first made to have fine grain structure through reasonable extrusion + recrystallization annealing process, then the special molybdenum alloy die and the process method of vacuum isothermal die forging are adopted, so that the brittle material realizes the forming of blade structure at high temperature and low speed, and the technical bottleneck problems such as large blade machining allowance, serious material waste, uneven blade structure, unstable mechanical properties of parts and the like caused by the need of machining preform of TiAl alloy at high temperature and preheating at low temperature during the near isothermal forming in the conventional preparation method are solved, and the blade quality is significantly improved and the manufacturing cost is saved. The machining allowance of the TiAl blade die forging part of the present application is only 2mm, and the raw material consumption can be saved by about 30%.

The application discloses a PDF knowledge graph construction method and device, equipment, a storage medium and a program product, relates to the technical field of data processing, and comprises the following steps: performing block processing on a PDF document based on the text content, page number information and paragraph structure of the PDF document to be processed, and obtaining a set of text blocks to be processed; extracting knowledge points from the text blocks to be processed to obtain a plurality of knowledge points and page number position information where the knowledge points are located; performing clustering processing on the knowledge points based on the semantic similarity and the page number position information between the knowledge points, and obtaining a hierarchical knowledge point tree; determining a plurality of candidate relationship descriptions of a knowledge node through a large language model, determining a relationship type of the knowledge node and other knowledge nodes in the hierarchical knowledge point tree based on the semantic similarity between the candidate relationship description of the current knowledge node and the text description of the other knowledge nodes in the hierarchical knowledge point tree, and constructing a knowledge graph of the PDF document to be processed, so that high-quality extraction and organization of structured document knowledge are realized.

This invention discloses a spinning forming method for the inner wall of a large-size liquid rocket engine combustion chamber, comprising: pre-processing process steps on a CuCrZr alloy tube to obtain an alloy tube containing an effective portion and process steps; using a high-pressure spinning method to blank the CuCrZr alloy tube to obtain a cylindrical part with uniform wall thickness; assuming the thickness of the effective deformable portion of the CuCrZr alloy tube before blanking is δ0, and the wall thickness of the cylindrical part is δ1 = (0.4~0.6)δ0; performing solution heat treatment on the cylindrical part; and performing local high-pressure spinning on the workpiece to obtain a cylindrical part with variable wall thickness; assuming the wall thickness of the inner wall of the engine combustion chamber to be formed is δ f The wall thickness of the first part of the variable-thickness cylindrical component is δ. f The wall thickness of the second part is determined by δ f The thickness gradually increases to δ1, with the third part having a wall thickness of δ1; the cylindrical part is then spun and formed at the neck; the workpiece undergoes aging heat treatment to obtain the inner wall of the combustion chamber. This invention achieves a combustion chamber inner wall with good forming accuracy and mechanical strength using lower production costs and a shorter production cycle.

This application discloses a graph-driven self-attention compressible memory management method, belonging to the field of penetration testing technology. This application constructs an attention graph and uses edge weights to accurately characterize the semantic dependencies and attention flows between multiple agent nodes, improving the relevance and accessibility of information. In terms of filtering and loading, this application filters key memory fragments based on the edge weights of the attention graph and task-related features, loading only useful information, effectively eliminating redundancy, reducing the amount of data processed by the system, and improving system operating efficiency. When the memory content exceeds the input context window limit of a large model, the semantic compression module can perform summary processing on historical information based on multiple factors. While ensuring that key semantic information is not lost, the summary length is controlled within the window limit, ensuring that the model can process information normally, and improving the system's adaptability and stability to different data volumes.

The application discloses a kind of vacuum electron beam welding methods of beryllium aluminum alloy, belong to metal material welding technical field, comprising the following steps: A, beryllium aluminum alloy plate is polished and cleaned and is handled;B, beryllium aluminum alloy plate is clamped with welding fixture, and the position to be welded is placed in the welding work area of electron beam welding system workstation;C, electron beam welding system is pumped to welding work vacuum degree, sets welding process parameter;D, preheating treatment is carried out to workpiece before welding, starts electron beam welding system, and beryllium aluminum alloy plate is welded;E, after welding, carries out postwelding slow cooling treatment.The application is designed by electron beam welding process and tooling fixture, optimizes electron beam welding heat input, controls cooling rate and the like mode, improves the uniformity of weld molten metal composition and organization, and the beryllium aluminum alloy weld obtained is not only free from crack, pore and other welding defects, simultaneously, but also makes the mechanical property of welded joint better than base material.

The present application relates to a kind of high-chromium high-nickel nitrogen-containing stainless steel forging billet quality control method, which can not only reduce forging heating fire times and save production cost, but also effectively improve the overall quality of the forging billet, suitable for the forging billet with outer diameter ≤350mm, first manufacturing intermediate billet with certain forging ratio + intermediate billet normalizing + air cooling + hydrogen annealing + forging billet surface temperature control + limited speed heating and step temperature holding + normalizing + temperature control cooling to promote microstructure transformation + high-temperature tempering and isothermal transformation composite process, which not only reduces forging heating fire times, saves production cost, but also effectively improves the overall quality of the forging billet.

This utility model discloses a large-span steel structure, belonging to the field of cooling tower technology. It includes columns, beams, and connectors, all made of H-beams. The beams are connected to the columns via connectors, with one end of the connector fixedly connected to the column. The connector includes interconnected connecting flanges and connecting webs. The beams include interconnected beam flanges and beam webs, with the end of the beam abutting against the end of the connector furthest from the column. A flange connecting plate connects the connecting flange and the beam flange, and a web connecting plate connects the connecting web and the beam web. This large-span steel structure reduces the number of columns, lowers costs, reduces wind resistance, and improves heat exchange efficiency. This utility model also discloses a mist-eliminating cooling tower incorporating this large-span steel structure.

The invention relates to the technical field of metal material preparation, in particular to a method and system for rapidly preparing and screening silicon steel components through a high-throughput experiment based on a positive-pressure electric arc melting system. Assembling an auxiliary device and starting a cooling system; setting a reference point; z-axis distance adjustment; setting smelting program parameters; a smelting current is set, and a dust removal system is started before arc starting; and smelting. The system has the advantages that multiple groups of silicon steel samples with different components are prepared at a time in the same smelting process, and high-flux synchronous smelting of the samples with the different components is achieved through cooperation of the positive-pressure electric arc smelting system and the sample array module; the limitation of one-by-one sample preparation of a traditional single-factor variable method is broken through, and the research and development period of a new material from design to verification is remarkably shortened; by setting a gradient component system, the contents of various elements are systematically adjusted in the same batch, so that the synergistic effect and the interactive influence among the elements are conveniently researched.

The application provides a kind of excellent pitting-resistant nickel-based electrode, including welding core and electrode coating powder coated on the surface of welding core, and each component of the electrode coating powder comprises, by weight percentage, 35-50% of sodium hexafluoroaluminate, 25-35% of barium carbonate, 5-10% of 95% rutile, 1-2% of rutile titanium dioxide, 5-10% of quartz, 4-6% of 70% micro-carbon chromium iron, 3-5% of niobium iron, 1-3% of manganese iron, 1-1.5% of calcium alginate, 0.5-1% of alkali surface.The electrode uses special welding core and adds a certain proportion of Nb and other alloy elements through the electrode coating powder formula, adjusts the chemical composition of the electrode deposited metal, realizes the characteristics that the electrode deposited metal has excellent mechanical properties and corrosion resistance, effectively improves the operability during manual welding, improves the welding efficiency and reduces the repair rate.

The application belongs to the technical field of aluminum-based materials, and particularly relates to an aluminum alloy strip for a power battery cover plate and a preparation method thereof. The aluminum alloy strip preparation method provided by the application successfully realizes 'free homogenization treatment' and 'free intermediate annealing' through unique component design and accurate synergistic control of key process parameters, so that the production energy consumption and cost are greatly reduced while the excellent performance of the product is ensured, and the processing efficiency is improved.