332results about How to "Improve deformation ability" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention provides a laser peening shape correcting system and method for a high-speed carrying equipment vehicle body thin-wall component. The laser peening shape correcting system comprises a measuring module, a process design module, an integrated control module, a laser scanning module and a machining workshop. The geometric shape of the thin-wall component to be corrected is obtained through the measurement module and input to the process design module; in the process design module, laser peening correction process parameters of the thin-wall component are designed based on the measured shape and the target shape, and a laser scanning path is generated and transmitted to the integrated control module; in the integrated control module, motion parameters of the laser scanning module are calculated according to the laser scanning path, and a motion instruction is issued; and after receiving the motion instruction, the laser scanning module begins to carry out shape correction processing on the thin-wall component placed in the processing workshop. By means of the system, the problem that the geometrical shape of the vehicle body thin-wall component is out of tolerance due to assembly welding and foreign object collision is effectively solved, and the system has the advantages of being good in controllability, high in shape correcting capacity and the like and has extremely high engineering application value.

The invention relates to an electric heating type liquid crystal elastomer artificial muscle and a preparation method thereof, belongs to the technical field of intelligent high polymer materials, and solves the technical problems that the liquid crystal elastomer artificial muscle in the prior art is easy to harden and embrittle due to excessive filler and is weak in deformability. The electric heating type liquid crystal elastomer artificial muscle comprises two layers of liquid crystal elastomer films and an electric heating element, the electric heating element is arranged between the two layers of liquid crystal elastomer films; the raw materials of the liquid crystal elastomer film comprise a liquid crystal unit, a chain extender, a cross-linking agent and a catalyst. Wherein the liquid crystal unit is 1, 4-bis-[4-(3-acryloyloxy propoxy) benzoyloxy]-2-methyl benzene. Joule heat generated by the electric heating element can activate the liquid crystal elastomer, deformation of the liquid crystal elastomer is not limited, and therefore the liquid crystal elastomer has the advantages of being high in deformability, controllable in heating mode and time, programmable in driving and the like; and a self-sensing function is also realized, and the shape change can be monitored and regulated in real time according to the resistance.

The invention relates to a solid electrolyte, a composite positive electrode, a preparation method of the composite positive electrode and an ultra-fast charging type all-solid-state battery, and belongs to the technical field of solid-state batteries. The formula 1 is Li < x > Al < alpha > M < beta > X < y > O < z >, X is halogen, M is a trivalent element except Al, the ratio of x to (alpha + beta) is (1-5): 1, the ratio of alpha to (alpha + beta) is (0.5-1), and the ratio of x to z is (1.25-5). The solid electrolyte provided by the invention is low in glass transition temperature and melting point, has viscoelasticity and relatively high ionic conductivity, and can be fused and cast together with a positive electrode material to form a composite positive electrode at a relatively low temperature, and relatively good interface contact (surface-to-surface contact) can be formed between the positive electrode and the solid electrolyte only by applying relatively small external force; according to the all-solid-state battery, the problem that rigid contact between the solid electrolyte and the positive electrode in the existing all-solid-state battery causes poor ion transmission network and further affects the battery performance is solved, the ion transmission efficiency and the charge-discharge rate performance of the solid-state battery are improved, and rapid and ultrafast charging can be realized.

The present invention relates to a double-layer geomembrane core wall rockfill dam structure and a construction method. The purpose of the present invention is to provide a double-layer geomembrane core wall rockfill dam structure and a construction method with superior anti-seepage performance and reliability. The technical solution of the present invention is: a double-layer geomembrane core wall rockfill dam structure, characterized in that: the rockfill dam has a double-layer geomembrane anti-seepage core wall structure; the double-layer geomembrane anti-seepage core wall structure is sequentially provided with an upstream sand cushion layer, an upstream geomembrane, a middle silt layer, a downstream geomembrane and a downstream sand cushion layer from upstream to downstream. The present invention is applicable to the field of water conservancy and hydropower engineering.

The invention discloses preparation of flame-retardant high-toughness PMI foam, and relates to the technical field of high-performance materials. Methacrylic acid, methacrylonitrile, an initiator, a modifier, a foaming agent, a cross-linking agent and a nucleating agent are adopted as main raw materials, a reaction solution is obtained after thickening treatment, then the reaction solution is injected into a mold, and water bath polymerization reaction and heating foaming are performed to prepare the foaming agent. The PMI foam material prepared by the method has excellent flame retardance and high toughness, and is suitable for the fields of aerospace, rail transit and high-end structural materials.

The invention discloses a paper folding type piezoelectric energy collector for collecting low-frequency energy. The paper folding type piezoelectric energy collector comprises a piezoelectric composite material paper folding cylindrical structure and two side end faces. The piezoelectric composite material origami cylindrical structure is obtained by bending and folding a planar piezoelectric composite material along a peak fold line and a valley fold line. In the bending process, the bent piezoelectric ceramic composite material can be manufactured by controlling external force in the sintering process. According to the invention, piezoelectric ceramic 3D printing is combined with a novel material inspired by paper folding. The piezoelectric ceramic suspension is used as 3D printing ink. The novel material structure is based on a Kresling origami cylindrical surface, but creases are hidden, the effective collection area is increased, and the electrical performance is improved. The multi-stable Kresling origami structure has low rigidity and a low energy barrier, so that energy collection in a low-frequency environment becomes possible, and the multi-stable Kresling origami structure is particularly suitable for ocean wave energy collection application.

The invention discloses a high-sensitivity proximity sense and three-dimensional pressure sense flexible capacitive sensor. The capacitive sensor comprises a plurality of sensing units which are distributed in an array mode, and each sensing unit comprises a contact layer, a hierarchical porous composite sensitive conductive unit and an induction electrode unit which are sequentially arranged in a stacked mode. Dual-mode measurement of proximity sense and three-dimensional pressure sense is achieved through a single-sensing-body mechanism, when a measured object is not contacted, the sensing unit completely works in a dielectric state, proximity sense measurement can be achieved, after the measured object is contacted, the sensing unit works in a common electrode state, three-dimensional pressure sense measurement can be achieved, and the sensing unit can be used for measuring the proximity sense and the three-dimensional pressure sense. Compared with a traditional flexible dielectric material, the hierarchical porous composite material is used as the sensitive unit, so that the dielectric constant and the deformation capability of the sensitive unit are greatly improved, and high sensitivity of flexible proximity sense and three-dimensional pressure sense measurement is ensured.

The invention provides a Chinese character image deformation method and device. A deformation control point and a corresponding deformation target point are selected from an original character image; calculating a corresponding weight for each deformation control point; calculating a first weighted center point based on the coordinate and the weight of each deformation control point, and calculating a second weighted center point based on the coordinate of each deformation target point and the weight of each deformation control point; calculating a transformation matrix corresponding to each pixel point based on the weight of each deformation control point and the first weighted center point; and based on each transformation matrix, the coordinate of each deformation target point and the second weighted center point, performing deformation operation on the original character image to obtain a new character image. According to the method, different influences are generated on pixel points in different areas of an image through weighted multiple control points, affine transformation needed by distortion deformation of the pixel points is calculated through the influences, smooth transition between a deformed area and a non-deformed area of the image is ensured, and therefore the purpose of improving the Chinese character image deformation effect is achieved.

The utility model discloses a folding mechanism and a bed, a table and a chair using the folding mechanism, the folding mechanism comprises a cross rod, a supporting leg, a top rod and a connecting piece, the connecting piece comprises a connecting part and side pieces integrally arranged on the two sides of the connecting part; the cross rod is connected with the connecting part, one end of the top rod is rotationally connected with the side piece, one end of the supporting leg is rotationally connected with the side piece, and the rotational connection position of the supporting leg and the side piece is located above the rotational connection position of the top rod and the side piece; an auxiliary rod is rotationally connected between the top rod and the supporting leg; limiting mechanisms are arranged between the supporting legs and the side pieces, after the supporting legs are unfolded, the limiting mechanisms limit the supporting legs, one ends of the supporting legs abut against the ejector rods, and after the supporting legs are folded, the cross rods, the supporting legs and the ejector rods are stacked. The volume is relatively small after folding, and the unfolding is simple and convenient.

According to the production method, an extremely-cold fine grain layer with the thickness being 10 mm or above and a large-size rectangular blank are obtained by means of the large specific water flow of primary cooling water, and the two-phase region controlled rolling, rapid cooling and isothermal slow cooling processes are matched, so that the low-carbon free-cutting steel wire rod capable of being subjected to large-deformation cold heading is obtained. And a structure of fine grain ferrite with large deformability and a very small amount of sorbite is obtained, and the 1 / 3 cold upsetting non-cracking requirement is met. After the produced free-cutting steel wire rod is subjected to oxide scale removal, drawing sizing and blanking, direct large-deformation cold heading and punching machining can be achieved, and the requirement for high-speed cutting machining is met.

The invention discloses an automobile lightweight design method and system. The method comprises the steps of obtaining a target load and a target attribute of an automobile; defining a design space, establishing an envelope geometric model for the pre-simulation structure, and converting the envelope geometric model into a finite element model; carrying out material replacement on optional parts in the design space by utilizing a first material; performing material replacement on the first matching part in the design space by using a second material; performing first simulation and second simulation on the inherent test working condition and the design element test working condition of the first object respectively; defining a constraint and a design target, and setting a size constraint and a manufacturing constraint for the pre-simulation structure; and carrying out material optimization and topological optimization solution, and iterating the optimization result until the expectation is met. The weight of the automobile body is reduced to the maximum extent, the energy efficiency and safety of the automobile are improved, the production cost is reduced, and an effective solution is provided for the lightweight design of the new energy automobile.

The invention relates to the field of wear-resistant materials, in particular to a preparation method of a phenolic resin friction material with a reinforced fiber interface, which comprises the following steps: 1, preparation of fibers with an organic silicon modified graphene oxide reinforced interface: pre-mixing graphene oxide and an organic silicon coupling agent for reaction, dispersing in a solvent under the condition of ultrasonic waves, and drying to obtain the fibers with the reinforced fiber interface; adding reinforced fibers into the graphene mixed solution; the phenolic resin, the reinforcing fibers and the filler are fully and evenly mixed and then poured into a preheated mold, heating compression is conducted under certain pressure and temperature, curing forming is conducted after a certain time, graphene oxide not only improves the interface bonding strength, but also improves the friction performance of the friction material; and the heat transfer efficiency of the whole composite material is also improved, so that the composite material has more stable performance under a high-temperature condition. The preparation method comprises the steps of mixing, dispersing, molding and curing the phenolic resin, the reinforced fibers, the graphene oxide and the coupling agent.

The invention discloses a cable surface water removal device for high-voltage electric power overhaul, and relates to the field of cable surface water removal, a water removal part comprises a moving ring, an inner cavity of the moving ring is rotatably connected with a central rotating shaft, and an inner cavity of the central rotating shaft is fixedly connected with a driving rod; a water removal shell is fixedly connected to the end, away from the central rotating shaft, of the driving rod, and a replacement mechanism is fixedly connected to the side, away from the driving rod, of the water removal shell. The sponge is extruded by the extrusion rods on the two sides, so that water is discharged, meanwhile, the water pump extracts the extruded water, the extension rod extrudes towards the direction of the sponge, the water in the center of the sponge is treated, the water in the sponge is cleaned more thoroughly, drying agents are arranged in inner cavities of the extrusion rods, and air and the water on the surfaces of the extrusion rods are treated. The heater evaporates a portion of the moisture.

The invention belongs to the technical field of aluminum alloy processing, and particularly relates to a manufacturing method of a high-strength aluminum-lithium alloy plate, a non-homogenized casting blank is subjected to ultralow-temperature rolling, high-temperature rough rolling, ultralow-temperature finish rolling and aging treatment, the casting blank is made of aluminum-lithium alloy, the rolling temperature of ultralow-temperature rolling and ultralow-temperature finish rolling ranges from-196 DEG C to-100 DEG C, the temperature of high-temperature rough rolling ranges from-20 DEG C to-30 DEG C, and the temperature of high-temperature rough rolling ranges from-20 DEG C to-30 DEG C; the rolling temperature of the high-temperature rough rolling is 360-480 DEG C, and the total deformation is not less than 80%; the aluminum alloy plate is finer in crystal grain, higher in strength, better in ductility, higher in forming precision and better in surface quality.

The invention relates to a high-strength and high-ductility cement-based composite material as well as a preparation method and application thereof. The high-strength and high-ductility cement-based composite material comprises the following components in parts by weight: 60-90 parts of cement, 10-40 parts of industrial solid waste, 20-40 parts of fine aggregate, 1-2 parts of a water reducing agent, 1-10 parts of fibers and 14-22 parts of water, the industrial solid waste comprises one or more of fly ash, silica fume, slag, steel slag and red mud; the fibers comprise one or more of polyethylene fibers, polyvinyl alcohol fibers, steel fibers, polypropylene fibers, carbon fibers, glass fibers, basalt fibers and the like; the tensile strain of the cement-based composite material is not less than 8%. Compared with the prior art, the cement-based composite material prepared by the invention has relatively high compressive strength and relatively strong deformability, and can effectively solve the problems of high brittleness, easiness in cracking, low impermeability and the like of cement concrete in a tunnel engineering lining structure.

The invention provides an inertia friction welding auxiliary machining device for dissimilar materials and a working method of the inertia friction welding auxiliary machining device, and belongs to the technical field of friction welding. The problem that in the prior art, the heat preservation effect cannot be improved at any time of welding according to the process requirement is solved. The device comprises a main shaft side box body, a main shaft side clamp, an external blowing assembly, a main shaft side to-be-welded piece, a movable sliding table box body, a lathe bed, a tailstock side clamp, a tailstock side to-be-welded piece and a heating mechanism, the main shaft side box body is installed on one side of the lathe bed, and the movable sliding table box body is installed on the other side of the lathe bed in a sliding mode through a movable sliding table rail; the main shaft side clamp is installed in the main shaft side box body through the main shaft fixing seat, the external blowing assembly is arranged on the outer side of a welding area of a main shaft side to-be-welded piece, the tailstock side clamp is installed in the movable sliding table box body through the tailstock fixing seat, and the heating mechanism is arranged on the outer side of the welding area of the tailstock side to-be-welded piece. The device is mainly used for protecting the welding area of friction welding.

The invention discloses application of a Cpeb3 gene inhibitor and a copper death inhibitor in preparation of a medicine for treating myocardial ischemia-reperfusion injury, and relates to the technical field of myocardial ischemia-reperfusion injury. By specifically reducing or knocking out Cpeb3 expression, myocardial repair can be remarkably promoted, action potential stability is improved, and the death rate is reduced. Therefore, Cpeb3 is a specific intervention target spot of copper death in Gpc6 + CMs. The small molecule inhibitor of Cpeb3 can remarkably reverse changes of copper death, aerobic respiration and / or glycolysis caused by Cpeb3 activation. In addition, the copper death inhibitor can improve the survival rate of myocardial cells, reverse the change of aerobic respiration and / or glycolysis induced by Cu, and reverse the change of glycolysis, pentose phosphate pathway and tricarboxylic acid cycle metabolites caused by Cu stimulation. Therefore, the invention provides a new solution for prevention and treatment of myocardial ischemia reperfusion injury, and has a good application prospect.

The utility model relates to a structure for treating permeation stability of a double-layer embankment foundation, which comprises the embankment foundation, an embankment body is arranged above the embankment foundation, a clay inclined wall is arranged on the upstream side of the embankment body, the bottom of the clay inclined wall is connected with the top of a high-pressure-spraying anti-seepage wall, the bottom of the high-pressure-spraying anti-seepage wall extends into an impervious layer, and the bottom of the high-pressure-spraying anti-seepage wall is connected with the top of the high-pressure-spraying anti-seepage wall. The slope toe of the clay inclined wall is provided with a concrete interlocking block and a grouted rubble foot protection part, the top elevation of the concrete interlocking block protection part is higher than the embankment foot backfill ground line, a geomembrane is arranged at the top of the high-pressure-spraying anti-seepage wall and is laid in the geomembrane tooth groove laying direction, and one end of the geomembrane is fixed in the geomembrane tooth groove fixing direction. The embankment body adopts the clay inclined wall, so that the anti-seepage effect is good, and the embankment foundation deformation adaptability is high. The high-pressure spraying anti-seepage wall is adopted in the embankment foundation, seepage can be effectively blocked, the seepage path can be effectively prolonged, and seepage damage is prevented.

The invention discloses a low-temperature-resistant high-toughness asphalt pavement material, and belongs to the field of asphalt materials, and the low-temperature-resistant high-toughness asphalt pavement material comprises the following components in parts by weight: 200-250 parts of coarse aggregate, 650-750 parts of fine aggregate, 40-50 parts of mineral powder and 45-70 parts of epoxy resin asphalt, the epoxy resin asphalt comprises 45-50 parts of asphalt, 20-30 parts of epoxy resin, 20-30 parts of a core-shell curing agent and 0.1-1 part of a catalyst; a branched structure of a rigid main chain and a flexible side chain is adopted as a core structure, organic acid anhydride of a rigid structure is adopted as a shell structure, the curing agent with the core-shell structure is synthesized through ring-opening metathesis polymerization design, the curing agent has good compatibility with epoxy resin, and an epoxy asphalt material obtained through the curing agent has the advantages that the curing agent has a good curing effect; and under the low-temperature condition, excellent toughness and relatively good mechanical strength are achieved.

The present invention relates to an integral bridge multi-stage abutment structure using a damper, comprising a main abutment and a secondary abutment arranged in sequence along the longitudinal bridge direction, a slope is formed by filling part of the soil between the main and secondary abutments, a concrete surface layer is laid on the slope, a damper is arranged between the concrete surface layer and the main abutment, the damper comprises an open arc steel plate and a supporting steel pipe, one end of the supporting steel pipe is fixed to the inner side of the open arc steel plate, and the other end is connected to an anti-buckling support steel sleeve, the length of the anti-buckling support steel sleeve is shorter than the opening length of the open arc steel plate, steel sleeves are arranged on the inner sides of two opposite openings of the open arc steel plate, the pipe diameter is larger than the elastic connectors at both ends of the anti-buckling support steel sleeve, the elastic connector is placed in the steel sleeve, and can slide freely in the steel sleeve. The structure is simple.

The invention relates to the field of material science, in particular to a concrete deformation regulation and control method and system based on a quaternary orthogonal model, and the method comprises the steps: determining a deformation regulation and control demand of to-be-regulated and controlled concrete, obtaining key parameter data of key parameters corresponding to the to-be-regulated and controlled concrete, and constructing the quaternary orthogonal model of the to-be-regulated and controlled concrete; establishing a geometric model of to-be-regulated concrete, creating a computational fluid dynamics grid of the geometric model, and defining material attributes and boundary conditions of the computational fluid dynamics grid; establishing a multi-physics field coupling model for calculating the fluid dynamic grid, and integrating the quaternary orthogonal model and the multi-physics field coupling model to obtain an integrated quaternary orthogonal model; and inputting the concrete real-time data into the integrated quaternary orthogonal model to obtain a deformation analysis result of the to-be-regulated concrete, and adjusting construction parameters of the to-be-regulated concrete by using a preset adaptive regulation system to obtain target concrete. The deformation regulation and control effect on the concrete can be improved.

The invention provides a cylindrical soft package battery and a manufacturing method thereof. The manufacturing method of the cylindrical soft package battery comprises the following steps: preparing the cylindrical shell (1); the two ends of the cylindrical shell (1) are cut to form a plurality of sealing edges (2) which are sequentially arranged in the circumferential direction; the positive plate, the first diaphragm, the negative plate and the second diaphragm are stacked and wound to form a pole core (3), and tabs are arranged on different sides of a positive electrode and a negative electrode of the pole core (3); the tabs of the positive electrode and the negative electrode are rubbed to be flat; the pole core (3) is arranged in the cylindrical shell (1); the collector plate (4) is welded with the flattened tabs; and the sealing edge (2) is turned over, so that the turnup wraps the collector plate (4) and is in sealing connection with the collector plate (4). According to the manufacturing method of the cylindrical soft package battery, the application range of the cylindrical soft package battery can be expanded.

The utility model discloses a single battery, a battery pack and an electric device. The single battery comprises a shell, an electrode assembly, a first cover plate and a first collector plate, the first flow collecting disc comprises a connecting piece and an elastic piece; the elastic part comprises a deformation part and a conductive part, the deformation part comprises a first section and a second section which are mutually connected, one end of the first section away from the second section is connected with the connector, the second section is bent relative to the first section, and one end of the second section away from the first section is connected with the conductive part. According to the first current collecting disc, the elastic piece is arranged, so that the battery has tolerance absorption capacity when being sealed, assembled and welded, and the yield loss is reduced; the deformation part of the elastic piece comprises the first section and the second section, and the first section and the second section are bent, so that the deformation capability of the elastic piece can be improved, and the connection between the connecting piece and the electrode assembly cannot be influenced.

The invention provides toughened anti-cracking and anti-corrosion solid waste concrete and a preparation method thereof. Mixing the cement, the fly ash, the slag and the natural aggregate; sequentially adding water, a weakly alkaline regulator and an additive solution containing a polycarboxylic acid water reducer to obtain concrete slurry; and curing to obtain the product. According to the invention, fly ash, slag solid waste and natural aggregate are used as aggregate, a water reducer is added to reduce the water consumption of concrete and improve the fluidity of concrete, and specially-made weakly-alkaline conditioning agent particles are introduced, so that the self-water-absorption-water-release behavior and bridging effect of the particles are utilized to improve the concrete fluidity. The early-stage and later-stage continuous hydration ability of a rubber material in the concrete is enhanced, the self-shrinkage and drying shrinkage resisting effects are achieved, the compactness and corrosion resistance of the concrete are improved, and then the anti-cracking ability of the all-solid waste concrete is improved. The surface of an obtained test piece is free of cracks, the 28d compressive strength reaches 46.6 MPa, the 28d breaking strength reaches 8.5 MPa, the self-shrinkage rate is 0.035%, and the drying shrinkage rate is 0.01%.

The invention discloses a tabletting forming method of a Cr-based catalyst. The method comprises the following steps: (1) preparing Cr-based catalyst powder by adopting a coprecipitation method; the Cr-based catalyst powder is roasted powder; (2) mixing the Cr-based catalyst powder obtained in the step (1), an aqueous solution of an auxiliary agent I and selectively added water to obtain a mixed material; (3) drying, crushing and screening the mixed material obtained in the step (2), mixing with an auxiliary agent II and an auxiliary agent III, and tabletting to obtain tablets; and (4) roasting the tablets prepared in the step (3) to obtain the formed catalyst. The Cr-based catalyst prepared by the method does not have the problems of layering, transverse cracking, uncapping and the like, and has stable physical and chemical properties.

The invention discloses an assembly type ecological building protection structure suitable for a high groundwater level canal section, the assembly type ecological building protection structure comprises a foundation and a protection slope which are symmetrically arranged on the two sides of a canal, the foundation comprises a prefabricated slope toe and a slope toe cushion layer arranged on the lower portion of the prefabricated slope toe, and the protection slope comprises a lock catch brick layer, a first abutment cap, a first honeycomb geocell and other structures. A self-adaptive frost heaving deformation fabricated structure is adopted as a whole, frost heaving force is released, the construction speed is high, meanwhile, synchronous construction can be achieved through the provided construction method, construction is not affected by construction time, construction can be conducted in any season, the construction efficiency is improved, the construction cost is reduced, and synchronous water supply can be achieved in the construction period. The invention further discloses a dynamic safety evaluation system for the channel slope, the system fuses field multi-source monitoring data, realizes automatic monitoring and constructs a comprehensive supervision system in combination with survey data and data, so that problems are found in time, hidden dangers are processed in time, comprehensive management of the channel is realized, and the maintenance cost is reduced.

The invention discloses a high-toughness zinc alloy with a prefabricated quasi-microcrack petal-shaped toughness second phase and a preparation method and application of the high-toughness zinc alloy, and belongs to the technical field of zinc alloy material processing. The microstructure of the high-toughness zinc alloy comprises a prefabricated quasi-microcrack petal-shaped GdZn12 phase or NdZn11 second phase or a mixture of the two second phases, wherein the volume fraction of the prefabricated quasi-microcrack petal-shaped GdZn12 phase or NdZn11 second phase is 3-10%, the average size distribution of the prefabricated quasi-microcrack petal-shaped NdZn12 phase or NdZn11 second phase is 5-40 microns, and the average grain size of matrix grains in the alloy is 0.5-1.2 microns. The degradable zinc alloy has high strength and high toughness at the same time, by means of the good toughness and deformation coordination capacity of the petal-shaped second phase, cracks can be prevented from being generated from the interface of the second phase and a matrix, meanwhile, the petal-shaped second phase can improve the energy absorption capacity through the cracks generated by the petal-shaped second phase, and in other words, the obdurability of the zinc alloy is improved.

The invention discloses a steel plate for EH550 ocean engineering and a manufacturing method thereof. The steel comprises the following chemical components in percentage by mass: 0.06%-0.12% of C, 0.10%-0.50% of Si, 1.20%-1.80% of Mn, 0.20%-0.50% of Cr or 0.20%-0.50% of Mo, less than or equal to 0.03% of Nb, 0.02%-0.04% of V, 0.01%-0.03% of Ti, 0.015%-0.045% of Al, less than or equal to 0.015% of P, less than or equal to 0.006% of S and the balance of Fe and inevitable impurities. The thickness of the steel plate is 6-50 mm, the yield strength is not lower than 550 MPa, the uniform elongation is not lower than 10%, the yield ratio is not higher than 0.80, and the impact energy at the temperature of-40 DEG C is not lower than 200 J. And through high-temperature controlled rolling and controlled cooling, a bainite structure with the dislocation density evenly distributed is obtained, and the problems that the steel plate for ocean engineering produced through a traditional quenching and tempering technology is insufficient in even elongation and too high in yield ratio are solved.

The utility model relates to the technical field of carding machines, in particular to a carding machine capable of uniformly carding cotton, which comprises a machine body, a mounting mechanism is fixedly connected to the outer side of the machine body, a transmission mechanism is fixedly connected to one end of the mounting mechanism, and a cotton carding mechanism is fixedly connected to the inner side of the mounting mechanism; a cleaning mechanism is fixedly connected to one side of the machine body, and an anti-disengaging mechanism is fixedly connected to the top end in the mounting mechanism. According to the carding machine capable of uniformly carding the cotton, due to the arrangement of the collecting box, the fan and the impurity discharging pipeline, cotton fibers adhered to the carding roller can be conveniently sucked out by the fan when the cotton fibers are carded, and the situation that the subsequent carding effect is affected due to excessive accumulation of the cotton fibers is avoided.