60results about How to "Uniform performance" patented technology

The invention relates to the technical field of artificial intelligence interpretability, and discloses a neuron correction-based large language model cue word attack prevention method, which comprises the following steps of: constructing an attack cue word data set, and rewriting attack cue words to obtain a contrast cue word data set consisting of contrast cue word data; constructing a probe, obtaining output values of all neurons in the large language model during reasoning, and further obtaining a neuron activation state of the large language model; inputting the attack cue word and the corresponding contrast cue word into a large language model, and summarizing the obtained neuron activation state table to obtain an additional activation neuron corresponding to the attack cue word; and inputting cue word attack data into the large language model, and forcibly zeroing the output of one or more neurons in the additional activation neurons. By correcting the key neurons, the model performance and the prevention effect are balanced, and the security of the large language model is improved.

The invention discloses a low-defect-stress SiC crystal and a SiC substrate, and belongs to the technical field of SiC material preparation. A plurality of SiC substrates are prepared from the SiC crystal, high-pass signals and low-pass signals are distinguished on the basis of the Laplacian pyramid principle, and under the high-pass signals, the overall optical path difference of any SiC substrate is lt; 6 nm, the maximum value of the optical path difference is lt; the standard deviation of the optical path difference is lt; and 3nm. The optical path difference between the SiC crystal and the SiC substrate is small and uniform under a high pass signal, the number of defects in SiC is small, stress concentration caused by in-plane defects is small, and the crystal quality of SiC is more uniform.

The embodiment of the invention is suitable for the technical field of artificial intelligence, and provides a re-calculation training strategy generation method, electronic equipment and a computer program.The method is applied to a heterogeneous cluster and comprises the steps that cluster information of the heterogeneous cluster and model feature information of a to-be-trained model are determined; for each storage and calculation resource in the heterogeneous cluster, according to the cluster information and the model feature information, re-calculation time information and re-calculation performance requirements are determined; determining a re-calculation time information characteristic value under the condition that the re-calculation performance demand is not greater than the performance limit value of the storage and calculation resources; and determining a recalculation training strategy for the to-be-trained model according to the recalculation time information feature value corresponding to each storage and calculation resource. According to the embodiment of the invention, the adaptive re-calculation training strategy can be determined for each storage and calculation resource of the heterogeneous cluster, and the model training efficiency and throughput are improved by adopting the re-calculation training strategy corresponding to each storage and calculation resource to carry out model training.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

The invention discloses a polyformaldehyde modified material and a preparation method thereof. Comprising the following components in percentage by weight: 75.80 to 88.89 percent of co-polyoxymethylene resin, 9.0 to 21.3 percent of thermoplastic polyurethane, 0.89 to 1.95 percent of an inorganic nano material, 0.29 to 0.34 percent of an antioxidant, 0.13 to 0.15 percent of a lubricant, 0.10 to 0.12 percent of a formaldehyde absorbent and 0.43 to 0.68 percent of a compatilizer. The polyformaldehyde modified material is prepared by drawing, cooling, granulating and drying the materials in a twin-screw extruder through a two-step melt blending method, the notch impact strength of the polyformaldehyde modified material can reach 16.83 KJ / m < 2 >, the nominal strain at break can reach 66%, and the bending modulus can reach 1720 MPa. The polyformaldehyde modified material has good comprehensive mechanical properties, greatly improved toughness, and good and balanced other properties such as strength and rigidity.

The utility model relates to the field of heat dissipation structures of servers, in particular to a heat dissipation structure of a micro server, which comprises a shell, a mounting chamber is arranged in the shell, heat dissipation fins are arranged on the outer wall of the shell, the thickness of the heat dissipation fins is gradually reduced from one end close to the outer wall to the other end, and a CPU and a heat conduction piece are arranged in the mounting chamber. The heat conduction piece is arranged between the CPU and the side wall of the shell provided with the heat dissipation fins. The heat dissipation structure of the micro server has the advantages of being good in heat conduction effect and high in efficiency, not only balancing performance, but also reducing energy consumption, and guaranteeing working performance of equipment.

The invention belongs to the field of gas technical purification, and particularly relates to a honeycomb-shaped high-concentration NO2 adsorption trapping material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing adsorbent slurry by taking high-silicon molecular sieve raw powder as a raw material; (2) putting a honeycomb carrier into the adsorbent slurry for dipping and coating; and (3) naturally airing, drying and roasting the impregnated carrier to obtain the integral honeycomb-shaped high-concentration NO2 adsorbing and trapping material. On the basis of the honeycomb-shaped high-concentration NO2 adsorption trapping material (the molecular sieve silica-alumina ratio is 1000-5000), NO2 is efficiently trapped through a pressure swing adsorption technology, meanwhile, the adsorbent subjected to adsorption saturation is reversibly regenerated, high-concentration NO2 desorbed gas is obtained, NO2 recycling is achieved, NOx tail gas of a nuclear industry post-treatment plant is recycled, and the purpose of recycling the NOx tail gas of the nuclear industry post-treatment plant is achieved. A stable NO2 gas source is provided for a spent fuel post-treatment main process, the dual requirements of NO2 raw material preparation and tail gas denitration of a post-treatment plant are met, and purification and recycling of NO2 are achieved.

The utility model provides a power supply circuit, a power supply system and a charging pile. The power supply circuit comprises N power modules and N power output ends, wherein N is greater than or equal to 4; the power output ends are in one-to-one correspondence with the power modules, and the power output ends are electrically connected with the corresponding power modules through the electric connecting pieces; wherein one electric connecting piece is connected with at least one other electric connecting piece through the switch element; the number of the switching elements is M, and the # imgabs 0 # imgabs 1 # switching elements are configured to be switched on or off through the switching elements. The control module is used for controlling the power modules to which the two electric connecting pieces connected with the control module belong to output electric power to the same power output end or controlling the power modules to which the two electric connecting pieces connected with the control module belong to respectively output electric power to respective corresponding power output ends; the power output end is configured to output electric power to electric equipment. According to the power supply circuit, the number of the switch elements is limited to be # imgabs2, so that the performance and the cost of the power supply circuit provided by the embodiment of the utility model are more balanced.

This application relates to the field of organosilicon polymer materials, specifically disclosing a method for preparing and applying a functionalized MQ silicone resin. A method for preparing a functionalized MQ silicone resin includes the following steps: (1) raw material pretreatment; (2) simultaneous addition reaction: mixing and reacting a hydrogen-containing MQ silicone resin, a terminal olefin monomer containing a benzocyclobutene functional group, and a terminal olefin monomer containing a C-F bond; (3) post-treatment to obtain the functionalized MQ silicone resin; wherein the molar ratio of Si-H bonds in the hydrogen-containing MQ silicone resin, C=C bonds in the terminal olefin monomer containing a benzocyclobutene functional group, and C=C bonds in the terminal olefin monomer containing a C-F bond is 1:(0.2-0.6):(0.1-0.4). This application enables the synergistic effect of the rigid benzocyclobutene group and the fluorinated flexible segment, one-step grafting, and structural controllability, ultimately preparing a functionalized MQ silicone resin with excellent dielectric properties, high temperature resistance, low-temperature flexibility, good hydrophobicity, and excellent mechanical strength.

The invention provides a TPU (thermoplastic polyurethane) sole surface treating agent. The TPU sole surface treating agent comprises 30-50 parts of a component A, 5-10 parts of a component B, 8-12 parts of a component C, 3-8 parts of a component D and 10-20 parts of a solvent, the component A comprises 20-40 parts of hydrogenated castor oil, 3-5 parts of nano titanium dioxide, 2-4 parts of glass beads, 0.5-1.5 parts of sericite, 1-2 parts of a coupling agent and 2-5 parts of an isocyanate bridging agent; the components are prepared from the following components in parts by weight: 5 to 10 parts of vinyl trimethoxy silane, 2 to 5 parts of polycarbodiimide, 1 to 3 parts of 4-tert-butylcatechol and 1 to 4 parts of azodiformate; the component C is prepared from 1 to 3 parts of carbon nanotubes, 2 to 5 parts of silver nitrate, 0.5 to 1.5 parts of sodium alginate and 10 to 30 parts of ethanol; the component D is camellia oil composite modified waterborne polyurethane; the solvent is low-molecular-weight organic dicarboxylic acid. The TPU sole is subjected to surface treatment by the surface treating agent, so that the coloring performance, oxidation resistance, hydrolysis resistance, hydrophobicity, antibacterial and mildew-proof performance and the like of the TPU sole are remarkably improved.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The invention discloses a multi-dialect large model adaptation method and system oriented to a Gluggin language, and the method comprises the steps: obtaining corpus data and model constraint information of each Gluggin dialect region, building a dialect mapping matrix, and positioning key semantic difference points; characterization offset features are extracted, contrast training sample pairs are constructed, and vector space analysis is implemented to determine a priority adjustment layer; identifying dialect difference features in the model constraint information to generate layered coding parameters, generating a layered representation structure through collaborative matching of a priority adjustment layer and the layered coding parameters, and determining a weight adjustment boundary; determining a parameter distribution density by combining a weight adjustment boundary and a priority coefficient, generating an optimal migration weight, extracting a negative migration node, converting the negative migration node into a dialect boundary mark, and constructing a gradient propagation path; and detecting the confusion expression set, generating representation decoupling configuration, executing progressive collaborative optimization based on the representation decoupling configuration and the gradient propagation path to output a multi-dialect adaptation scheme, and realizing accurate adaptation and collaborative optimization of the multi-dialect of the Gu-language family.

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.

The invention discloses an anti-radiation metal layered composite material and a preparation method thereof. The preparation method comprises the following steps: smelting and casting an Al-3. 5Cu-2Mg-Ni alloy cast ingot; the Al-3. 5Cu-2Mg-Ni alloy cast ingot is subjected to homogenization treatment, hot rolling and annealing; the annealed Al-3. 5Cu-2Mg-Ni alloy cast ingot and a tantalum-tungsten alloy plate are subjected to composite rolling, and the anti-radiation metal layered composite material is obtained; wherein the Al-3. 5Cu-2Mg-Ni alloy ingot comprises the following components in percentage by weight: less than or equal to 0.5% of Si, 0.2-0.6% of Fe, 3-3.8% of Cu, less than or equal to 0.05% of Mn, 1.8-2.4% of Mg, 0.8-1.2% of Ni, less than or equal to 0.3% of Zn, less than or equal to 0.5% of Ti, less than or equal to 0.05% of single content of other elements, less than or equal to 0.15% of total amount and the balance of aluminum. According to the Al-3. 5Cu-2Mg-Ni alloy disclosed by the invention, a certain amount of Cu, Mg and Ni are added into the Al-3. 5Cu-2Mg-Ni alloy, so that the resistance of the alloy to extranuclear electrons is improved, precipitated phases such as Al2Cu and Al2CuMg can be formed in the aging process, and the aging strengthening effect is improved.

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.

Provided is a thermoplastic resin composition capable of obtaining uniform electromagnetic absorption performance with no in-plane variation in a molded article thereof as a result of the fluidity being favorable in addition to the reflection loss and transmission loss being high. A thermoplastic resin composition according to the present disclosure which is to be used in an electromagnetic wave absorber and contains a thermoplastic resin (A) and carbon nanotubes (B), wherein the carbon nanotubes (B) satisfy formulas (1) and (2), and a sheet having a thickness of 100µm and formed from the thermoplastic resin composition has a sheet surface maximum height Sz of 5µm or less when measured according to ISO 25178. (1) The full width at half maximum of the diffraction peak of the (002) plane in powder X-ray diffraction analysis is 2.0-6.0°. (2) The ratio (G / D) of the maximum peak intensity G in a 1,560-1,600 cm-1 range in a Raman spectrum to the maximum peak intensity D in a 1,310-1,350 cm-1 range therein is 0.5-2.0.

The invention provides a titanium alloy material with good biocompatibility and a preparation method thereof, and the preparation method comprises the following steps: S10, obtaining a titanium alloy matrix, and carrying out surface roughening treatment on the titanium alloy matrix; alloy A is obtained; s20, the surface of the alloy A is coated with a porous ceramic material; alloy B is obtained; s30, a composite molecular layer is assembled on the surface of the alloy B; the titanium alloy material is obtained; wherein the composite molecular layer comprises a first biomolecule and a second biomolecule; the first biomolecule is fibronectin; the second biomolecule is an amino acid. According to the titanium alloy material provided by the invention, the biocompatibility of the titanium alloy material can be remarkably improved through the combination of the porous ceramic and the composite molecular layer, so that the titanium alloy material is more suitable for being used as a medical implant.

The invention discloses a temperature-cooling rolling process for a high-strength non-magnetic small bar with the diameter being 20-30 mm. The temperature-cooling rolling process aims at solving the problems that steel is low in tensile strength and yield strength, high in rolling temperature rise, large in rolling resistance, large in product performance difference, deteriorated in performance, long in machining period and the like. According to the specific technical scheme, (1) an original steel ingot is obtained through electric furnace smelting and external refining (AD + LF); heating the steel ingot by using a walking beam furnace; (2) carrying out high-temperature rolling cogging by a reversible cogging mill; (3) temperature-controlled rolling: (1) rough rolling; (2) cooling; (3) intermediate rolling; and (4) finish rolling. The method has the advantages that due to the design of a rolling process, namely four rough rolling, six intermediate rolling, four finish rolling and a cooling process after rough rolling, the obtained product has the characteristics of high strength, high toughness, uniform performance and the like on the basis of no magnetism.

A method for machining a part using a laser melting forming apparatus, comprising the following steps: establishing a function relation between height of a single channel and a defocusing amount; deriving an obtained function, respectively substituting different roots obtained by solving that a first derivative is equal to zero into a second derivative, obtaining numerical values of the roots of the first derivative corresponding to the numerical values that are smaller than zero among second derivative values, and recording the numerical value of the root thereof having a minimum absolute value as a first numerical value; respectively substituting numerical values of different roots obtained by solving that the second derivative is equal to zero into a third derivative, and recording the numerical values of the roots of the second derivative corresponding to the numerical values that are smaller than zero among the obtained third derivative values as second numerical values; and subtracting the first numerical value from the second numerical values, wherein the second numerical value corresponding to the numerical value in the obtained result that is smaller than zero and has the minimum absolute value is the value of the defocusing amount that can implement an optimal self-healing effect, such that an optimal parameter of the defocusing amount is obtained.

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 an ultrathin heat-resistant polyester film and a preparation method thereof, raw materials comprise a polyester matrix, an antioxidant, a lubricant and the like, the polyester matrix is formed by compounding PET, PEN, polyester liquid crystals and hydroxyl-terminated hyperbranched polyester, and a nanofiller is an aluminum oxide, zirconium oxide and boron nitride compounded system and is matched with calix [4] pyrrole, polyhedral oligomeric silsesquioxane and other components. The preparation method comprises the steps of mixing, twin-screw extrusion and filtration, die head extrusion and cooling, two-way stretching, corona treatment and rolling, and extrusion, stretching and shaping process parameters are controlled. The thickness of the thin film is 5-8 microns, the thin film has excellent tensile strength, low thermal shrinkage rate and high-low temperature cycle resistance, the synergistic effect of the components is remarkable, and the thin film is suitable for high-end ultrathin heat-resistant scenes.

The invention discloses a degreasing method of a silicon nitride ceramic substrate, which belongs to the field of advanced ceramic preparation, and comprises the following steps: in a silicon nitride green body pre-degassing stage, heating to 140-160 DEG C; in the silicon nitride green body pre-decomposition stage, the temperature is increased to 230-270 DEG C, and N2 is added; in the oxygenolysis and catalytic chain scission stage of the silicon nitride green body, the temperature is raised to 350-400 DEG C, and the volume ratio of N2 to O2 is 97: 3-90: 10; in the inert purification and structure relaxation stage of the silicon nitride green body, the temperature is increased to 450-600 DEG C, and N2 is added; in a silicon nitride green body cooling stage, cooling to 180-220 DEG C, and adding N2; the temperature rise rate gt of the silicon nitride green body inert purification and structure relaxation stage; the heating rate gt of the silicon nitride green body in the pre-decomposition stage; the temperature rise rate gt of the oxygenolysis and catalytic chain scission stage of the silicon nitride green body; the temperature rise rate in the oxygenolysis and catalytic chain scission stages of the silicon nitride green body is increased. According to the method, the degreasing time is shortened by 40% or above, the warping rate of the green body is reduced to be smaller than or equal to 1%, the single-stack stacking amount is increased to be larger than or equal to 30 pieces, and the production efficiency and the product quality are remarkably improved.

The utility model relates to the field of 3D printing, in particular to plastic additive powder anti-agglomeration mixing equipment which comprises a bottom plate, a lifting assembly is arranged on the bottom plate, and a mixing assembly is arranged on the lifting assembly; according to the anti-agglomeration mixing equipment for the plastic additive powder, through the arrangement of the mixing assembly, the scheme adopts a multi-motor cooperative driving composite motion mechanism, a second motor drives a stirring frame to realize shearing and convection dispersion of materials in a barrel, and a first motor drives a rotating frame and the mixing barrel to rotate, so that space migration and collision of the materials are enhanced; the third motor enables the rotating frame to rotate reversely through the chain wheel and the transmission chain, and a multi-dimensional complementary movement track is formed. The multi-shaft linkage mode effectively breaks through the limitation of traditional single-shaft stirring, the dispersion efficiency and uniformity are remarkably improved, and the agglomeration phenomenon is efficiently eliminated by strengthening friction and collision among particles, so that the mixing quality of the plastic additive powder is ensured to meet the high-standard process requirement.

The invention relates to the technical field of adhesives, in particular to a multifunctional sanitary material hot-melt pressure-sensitive adhesive and a preparation method thereof. The multifunctional sanitary material hot-melt pressure-sensitive adhesive is prepared from the following raw materials in parts by mass: 15 to 16 parts of SBS (Styrene Butadiene Styrene), 4 to 5 parts of SIS (Styrene Isoprene Styrene), 50 to 60 parts of petroleum resin and 20 to 30 parts of softening agent. The hot-melt pressure-sensitive adhesive prepared by the preparation method disclosed by the invention has the strong adhesive property of a structural adhesive and the excellent creep resistance of a rubber band adhesive, can meet the dual requirements of adhesion between sanitary material layers and rubber band fixation, and can improve the performance stability and market competitiveness of a product after being used.

The invention discloses a positive electrode material sagger and a manufacturing method based on a spray granulation technology, and belongs to the technical field of lithium battery sagger manufacturing. Firstly, potassium aluminum silicate, mullite, cordierite and aluminum titanate are subjected to dry mixing, and an organic binder and water are added to prepare a material A; then performing dry mixing on cordierite, talc, zirconium dioxide, kaolin and aluminum oxide, and adding an inorganic binder and water to prepare a material B; mixing the material A, the material B and water to obtain mixed slurry; carrying out spray drying granulation on the mixed slurry; carrying out dry pressing molding on the particle material to prepare a sagger green body; and sintering the sagger green body at high temperature to obtain the positive electrode material sagger. In the manufacturing process, abrasion to a mold is small, and the manufactured saggar is good in mechanical performance, low in porosity and long in cycle service life.

The present invention relates to a method for manufacturing an electrode assembly including a first electrode, a separator, and a second electrode, the method comprising: a stacking step of stacking a stack including the first electrode, the separator, and the second electrode on a stacking table; an induction heating step of inductively heating the stack; and a heating and pressing step of heating and pressing the induction-heated stack, in which at least one of the first electrodes in the stack includes a first electrode tab and at least one of the second electrodes in the stack includes a second electrode tab, the method is further characterized by further comprising an electrode tab induction heating step of inductively heating at least one of the first electrode tab and the second electrode tab between the induction heating step and the heating and pressing step.

The present invention relates to a production process of a 7xxx aluminum alloy coil bar with high cold upsetting formability, comprising: rapidly cooling and continuously casting an aluminum alloy melt into an aluminum alloy rod, peeling the aluminum alloy rod to remove an oxide layer after homogenization, continuously extruding the aluminum alloy coil bar, drawing the aluminum alloy coil bar, and after drawing, adopting a two-stage low-temperature annealing treatment to obtain a 7xxx aluminum alloy coil bar with high cold upsetting formability; the drawing deformation is ≥20%; the two-stage low-temperature annealing treatment conditions are: firstly heat preservation at 200-260℃ for 2-4h, then heating to 320-360℃ for 2-6h, after the heat preservation is finished, cooling to 240-280℃ at a cooling rate of ≤30℃ / h, and air cooling out of the furnace. The present invention can produce 7xxx aluminum alloy coil bars with uniform performance and excellent cold upsetting formability, and is particularly suitable for the production of large coil weight (>200Kg) aluminum alloy coil bars.

The invention relates to the technical field of metal materials, in particular to a high-strength aluminum alloy and a casting method and a heat treatment method thereof. The high-strength aluminum alloy comprises the following components in percentage by mass: 4.8%-5.2% of Cu, 0.6%-1.0% of Mn, 0.15%-0.18% of Ni, 0.25%-0.45% of Mg, 0.25%-0.35% of Ti, less than or equal to 0.15% of Fe, less than or equal to 0.15% of Si, less than or equal to 0.2% of Zn and the balance of aluminum and impurities, and the impurities are less than or equal to 0.1. According to the method, on the basis of high-strength aluminum alloy of an A206 alloy aluminum-copper-manganese-magnesium system, the content of elements such as Cu, Mg, Ni and Mn is accurately controlled, and an optimized solid solution-aging process is combined, so that a theta phase (an equilibrium phase and inhibited), an S phase (a main strengthening phase), a T phase (a high-temperature strengthening phase) and a sigma phase (a structure stable phase) form an ordered multi-phase system. All phases compete for solutes and have complementary functions, and high strength, excellent castability and wide temperature range stability which are difficult to consider by a traditional aluminum alloy are finally realized through a synergistic mechanism of'intragranular dispersion strengthening and grain boundary stability strengthening '.

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 invention relates to the field of steel rolling production, and aims to provide a production method for improving the overall performance uniformity of a wire rod, which comprises the following steps: S1, heating a steel billet by using a heat accumulating type heating furnace; s2, high-pressure water is used for dephosphorization, and oxide skin on the surface of the high-temperature steel billet is removed; s3, performing rough rolling, intermediate rolling, pre-finish rolling and finish rolling on the dephosphorized steel billet to form a wire rod; s4, before the length set at the front end of the wire rod falls into the Stelmor roller way, the Stelmor roller way is decelerated, after the length set at the front end of the wire rod falls into the Stelmor roller way, the Stelmor roller way recovers the speed, and before the length set at the tail end of the wire rod falls into the Stelmor roller way; s5, the wire rod is subjected to slow cooling through a Stelmor roller way and then is rolled, and the rolled wire rod is fed into a heat preservation vestibule to be slowly cooled again; in this way, the head section and the tail section after spinning can be evenly distributed and are kept consistent with the middle section, and therefore the problem that small-specification wires are not evenly distributed on the Stelmor roller way after spinning is solved.