14results about How to "Uniform performance" patented technology

The embodiment of the application is suitable for the field of artificial intelligence technology, and provides a re-computation training strategy generation method, an electronic device and a computer program. The method is applied to a heterogeneous cluster, and includes: determining cluster information of the heterogeneous cluster and model feature information of a to-be-trained model; determining re-computation time information and re-computation performance requirements of each storage-computing resource in the heterogeneous cluster according to the cluster information and the model feature information; determining a re-computation time information characteristic value in a case where the re-computation performance requirements are not greater than a performance limit value of the storage-computing resource; and determining a re-computation training strategy for the to-be-trained model according to the re-computation time information characteristic value corresponding to each storage-computing resource. The embodiment of the application can determine an adaptive re-computation training strategy for each storage-computing resource of the heterogeneous cluster, and improve the model training efficiency and throughput by using the re-computation training strategy corresponding to each storage-computing resource for model training.

This invention discloses a flame-retardant sealant for battery cell lead terminals and its preparation method, relating to the field of adhesive technology. The flame-retardant sealant for battery cell lead terminals, by weight, comprises the following raw material components: 30-50 parts base adhesive, 20-40 parts composite flame retardant, 5-15 parts curing agent, 1-3 parts silane coupling agent, 3-8 parts toughening agent, and 1-5 parts thixotropic agent; the composite flame retardant is a mixture of aluminum hydroxide and an organophosphorus flame retardant, with a weight ratio of 0.2:1.5. This sealant synergistically improves flame retardancy and environmental friendliness. Through the precise formulation of the inorganic-organic composite flame retardant, it avoids the problems of traditional single flame retardants requiring large amounts or easily decomposing and producing toxins at high temperatures, ensuring both high flame retardancy and environmental friendliness.

This application relates to a path planning method, apparatus, device, and storage medium for arc additive manufacturing. The path planning method includes: determining the number of welding layers in the arc additive manufacturing process; and determining the arc initiation point and welding direction of each welding layer based on the number of welding layers, wherein the arc initiation point and welding direction of each welding layer are different from those of the previous welding layer. This application enables additively manufactured structures to exhibit more uniform performance in different directions and can also avoid inter-pass defects.

The invention discloses a low-whitening ethyl cyanoacrylate adhesive composition and a preparation method thereof, and relates to the technical field of instant dry adhesives. The low-whitening ethyl cyanoacrylate adhesive composition is prepared from the following components in parts by weight: 80 to 88 parts of alpha-ethyl cyanoacrylate, 1.2 to 4.0 parts of a cyanoacetamide volatile anchoring agent, 5.0 to 12.0 parts of a low vapor pressure cyanoacrylate monomer, 0.055 to 0.38 part of a stabilizer and 2.0 to 7.0 parts of a thickening agent. According to the low-whitening ethyl cyanoacrylate adhesive composition provided by the invention, the whitening phenomenon can be remarkably reduced, and the main monomer is still alpha-ethyl cyanoacrylate, so that the quick positioning, high shear strength and good adhesive property to various substrates of the traditional ECA adhesive are maintained; the comprehensive performance is balanced.

The application discloses a kind of high-strength plastic β titanium alloy strip and whole-process preparation method, the β titanium alloy strip is composed of the following mass percentage components: Cr 7.7%~8.3%, Mo 4.9%~5.5%, V 4.9%~5.5%, Al 2.7%~3.3%, Fe≤0.20%, C≤0.03%, N≤0.02%, H≤0.010%, O≤0.10%, and the rest is Ti;The preparation method comprises: one, forging;Two, hot rolling;Three, cold rolling;Four, heat treatment.The β titanium alloy strip and whole-process preparation method of the application are overall planning from component design to final heat treatment whole-process procedure, improve production efficiency, shorten preparation time, and the β titanium alloy strip solid solution state microstructure is equiaxed β fine grain structure, strength-plasticity matching is high, horizontal longitudinal organization performance is uniform, with excellent comprehensive mechanical properties, applicable to metal processing field.

The application discloses a forming method of a composite material flange and a die thereof in the technical field of aviation structure connecting piece manufacturing, and comprises die pretreatment, layered paving design, twisted filament core material preparation and soft die auxiliary forming. The fiber arrangement is optimized by arranging the R area gradient paving and the flexible gasket in a spaced mode, and the structure stability is ensured by combining the tooth groove locking edge packaging. A step type heat sealing and pressing curing process is adopted, and the R area and the plane area are synchronously compacted by cooperating with the air bag pressurization. The process covers core material filling verification, vacuum pre-pressing and temperature control demolding, and finally a high-precision flange component is obtained. Through the synergistic process of the gradual pre-compaction and the step type heat sealing and pressing curing, the application effectively solves the problems of poor fiber adhesion, uneven pressure and stress concentration of the R area of the composite material flange, realizes the continuous arrangement of the fiber of the complex curved surface, significantly reduces the internal stress of the interface, and finally obtains a high-quality flange component with a compact structure and uniform performance.

The application discloses a multi-specification Ti551 titanium alloy ingot preparation method and belongs to the non-ferrous metal processing technical field. The composition of the Ti551 titanium alloy is as follows in terms of percentage by mass: Al 4.5%-5.5%, Mo 0.5%-2.5%, V 0.5%-1.5%, Zr 1.0%-3.0%, Cr 0.5%-1.5%, Sn 0.5%-1.5%, Fe≤0.25%, O≤0.12%, and the balance is Ti and inevitable impurities. The method comprises the following steps: proportionally weighing raw materials such as titanium sponge, zirconium sponge, Al-Mo-containing intermediate alloy, Ti-Sn-containing intermediate alloy, aluminum beans and TiO2; pressing the raw materials into electrode blocks with a density≥3.2g / cm 3 ; obtaining consumable electrodes through vacuum welding; preparing ingots through three-time vacuum consumable arc furnace smelting, the vacuum degree of the three-time smelting is all≤6Pa, and the diameter of the crucible ranges from Φ570mm to Φ1240mm. The application solves problems such as the increase of melt viscosity, poor fluidity, uneven ingot composition and the like caused by multiple alloy elements, and establishes a complete smelting process system covering 5-20-ton multi-specification ingots.

The invention discloses a carbon ceramic closing resistor for a high-voltage circuit breaker and a preparation method of the carbon ceramic closing resistor, and belongs to the technical field of power elements. The problems of poor resistor compactness, non-uniform performance, insufficient mechanical property and the like caused by high pressing and sintering difficulty, process instability and high and non-uniform resistor porosity of the carbon ceramic resistor are solved. The preparation process of the resistor comprises the following steps: by taking aluminum oxide and quartz as ceramic phases, presintered kaolin, mullite and potassium feldspar as clay phases and carbon black or graphite as conductive phases, pre-coating the ceramic phases with the clay phases, carrying out vacuum calcination on pre-coated powder, mixing the pre-coated powder with the secondarily added clay phases and the conductive phases, carrying out spray granulation, pressing a green body, sintering and spraying. And obtaining the carbon ceramic closing resistor. According to the invention, the kaolin is pre-sintered, and the clay phase is pre-coated with the ceramic phase, so that the subsequent blank pressing uniformity and density are increased, the structural defects of the carbon ceramic resistor are reduced, and in combination with the spark plasma sintering technology, the batch rapid production of the resistor can be realized.

The application provides a high-casting-performance beryllium aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy materials.The preparation method comprises the following steps: preparing materials according to the weight percentages of Be ingots, Al ingots, Ag ingots, Co sheets, Si and La metals; placing the Ag ingots, the Co sheets, the Si and the La metals at the bottom of a crucible, then sequentially placing the Al ingots and the beryllium ingots into the crucible, refining, and obtaining a melt; uniformly stirring the melt, then gradually cooling the melt to a pouring temperature, then pouring the melt into a prefabricated ceramic mold shell, and standing for 3-5 minutes in a furnace and cooling outside the furnace.The beryllium aluminum alloy has a uniform and dense structure, good fluidity, high casting performance, and is easy to be cast into a shape, and has fewer casting defects.

The application discloses a bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging and a preparation method thereof. First, two multifunctional inorganic modified compounds, mesoporous silica coated carbon nanotube hybrid and phosphorus-nitrogen synergistic flame-retardant reinforced titanium dioxide nanorod, are designed and synthesized. Then, the two inorganic modified compounds are added as core additives, and mixed with a nylon matrix, an antioxidant, a lubricant, a dispersant and an electrolyte-resistant modifier to obtain a composite master batch through melt extrusion granulation. Finally, the composite master batch is subjected to melt extrusion, casting, bidirectional stretching, shaping and winding to obtain the bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging. The nylon film prepared by the application has excellent flame-retardant performance, mechanical strength, electrolyte corrosion resistance, aging resistance and processing performance, and the preparation process is simple, green and environment-friendly, and can meet the application requirements of high-end lithium ion battery packaging fields such as lithium ion battery soft packaging and hard shell packaging.

The application relates to the technical field of high polymer materials, and particularly discloses a bio-based polyether ether ketone as well as a preparation method and application thereof. The bio-based polyether ether ketone is prepared by the following steps: mixing a bio-based diphenol monomer, alkali, 4,4'-difluorobenzophenone, a water-carrying agent and a polar organic solvent, refluxing the water-carrying agent at 30-150 DEG C, evaporating the water-carrying agent at 40-150 DEG C, performing a final polymerization reaction at 150-260 DEG C, and then sequentially performing precipitation, washing and drying to obtain the bio-based polyether ether ketone. The bio-based polyether ether ketone provided by the application uses renewable biomass as a raw material to construct a core molecular structure, retains the core properties of traditional polyether ether ketone, such as high-temperature resistance and chemical corrosion resistance, and optimizes and improves the solubility and processing fluidity.

The application discloses a medium-carbon martensitic stainless steel with refined structure and a manufacturing method thereof. The steel has a more uniform structure and better corrosion resistance. The chromium-nickel equivalent ratio of the material is less than or equal to 1.50, the residual austenite phase is greater than or equal to 3%, the hardness after dispersoid carbide precipitation is greater than or equal to 52.5HRC, the hardness difference of the same plate is less than or equal to 1.0HRC, and the pitting point is greater than or equal to 105mV, which is 100% higher than that of 4Cr13. The material can be used in the fields of compressor valve plates and medical devices.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

The application discloses a kind of high-nitrogen high-aluminum new energy automobile gear steel and manufacturing method thereof, steel chemical composition mass percentage: C 0.18-0.25%, Si 0.2-0.4%, Mn 0.6-0.9%, Cr 0.8-1.2%, Ni 0.3-0.6%, Mo≤0.10%, Al 0.05-0.09%, N 0.018-0.025%, P≤0.01%, S≤0.005%, the balance Fe and impurities.Preparation method: electric furnace smelting→LF refining→VD vacuum degassing nitrogen-increasing→continuous casting→grading temperature control rolling.The application forms dispersed AlN grain refinement by Al-N cooperation, strictly controls harmful element to improve purity, has high strength, high toughness, high wear resistance and high fatigue resistance, tensile strength≥1200MPa, adapts new energy automobile high speed high torque condition, process is stable and can be mass-produced.