39 results about "Plastic energy" patented technology

The invention relates to a hot-rolled wire rod for a 2060MPa-grade stranded wire and a manufacturing method of the hot-rolled wire rod. Mn-Cr high-carbon chemical component design and rolling spinning are performed to form a wire rod, then online molten salt isothermal phase change treatment is performed, the wire rod is firstly subjected to front-section molten salt treatment and enters a sorbite phase region from an austenite state to form a structure taking a sorbite structure as a main structure, and then the wire rod is subjected to rear-section molten salt treatment, so that the hot-rolled wire rod is obtained. The method comprises the following steps of: firstly, carrying out heat treatment on the residual austenite, promoting the unconverted residual austenite to be converted into a sorbite structure, simultaneously promoting isothermal tempering of the structure and fusing of a part of sorbite lamellas, and finally, slowly cooling through a roller way to prepare a hot-rolled wire rod of which a microscopic structure comprises a mixed structure consisting of tempered sorbite, tempered ferrite and fused sorbite, so that the material cost can be controlled; the high-strength and high-plasticity performance matching of the wire rod is improved, the tensile strength is 1370-1420 MPa, the percentage reduction of area is 35%-40%, and the mechanical property fluctuation is reduced, so that the wire breaking risk in stranded wire production is reduced, and efficient and stable production is promoted.

The vertical shaft derrick plastic energy dissipation protection beam structure disclosed by the application comprises a plastic energy dissipation component, a support component is fixed to the upper side of the plastic energy dissipation component through a plurality of bolts, a soft steel energy dissipation support is fixed to the two sides of the support component, the other sides of the two soft steel energy dissipation supports are fixed to steel columns, a plurality of buffer supports are further arranged, the buffer supports are fixed to the lower side of a steel beam, the steel beam is arranged above the support component, and the buffer supports correspond to the support component. The energy dissipation protection beam has the advantages of simple structure, convenient installation, wide application in the technical field of impact resistance protection in civil engineering and mechanical engineering, effective absorption and dissipation of impact energy, cooperation of multiple dissipation components and protection components, greatly improved energy dissipation capacity of the protection component, easy installation and replacement of the plastic energy dissipation components, low cost, and high protection efficiency.

The invention belongs to the technical field of aluminum alloy material processing, and discloses a cryogenic treatment process of a 7xxx series high-strength aluminum alloy pipe, the process sequentially comprises three core steps of solution treatment, cryogenic treatment and aging treatment, and the 7xxx series high-strength aluminum alloy pipe is obtained by accurately controlling key parameters of each step. The technical problems that in a traditional T6 heat treatment process, a 7xxx series aluminum alloy pipe is uneven in precipitated phase distribution, grain refinement is insufficient, the strength and plasticity are difficult to consider, and internal stress is large are solved. After being treated by the process, the tensile strength of the pipe is improved to 705MPa, the yield strength is improved to 678MPa, the ductility is improved to 11.8%, the size of a precipitated phase in a microstructure is smaller, distribution is more uniform, the internal stress is remarkably reduced, the size stability is greatly improved, industrial batch production can be realized, and the requirements of the fields of aerospace, rail transit and the like on the high-performance aluminum alloy pipe are met.

The invention relates to the field of metal material magnesium alloys, in particular to a preparation method of a high-plasticity magnesium alloy and a product thereof. The second phase of the grain boundary is controlled to be a quasi-crystal phase by regulating and controlling alloy components, and the preferred growth orientation surface of the magnesium alloy is regulated and controlled to be a conical surface through directional solidification, and the growth orientation is that grains are typical columnar crystals; the size and distribution of the second phase are adjusted by changing the growth speed, and segregation of the second phase in the crystal is reduced. And finally, the quasicrystal second phase is dispersed and distributed in the crystal by regulating and controlling the temperature and time of heat treatment. In this way, the high-plasticity magnesium alloy is successfully prepared, and the yield strength of the high-plasticity magnesium alloy ranges from 170 MPa to 200 MPa; the tensile strength is 180 to 212MPa, the plasticity reaches 31.0 to 42.2 percent, and the product of strength and elongation is 5580 to 8947MPa.%.

The present application relates to the technical field of aluminum alloy cast bar production, and particularly relates to an aluminum alloy cast bar production process based on micro-tube production, which solves the problem of simple refining process of molten aluminum in the prior art, reduces the plasticity and uniformity of the subsequent formed cast bar, and through the refining link, a composite refining system containing nano-Al2O3, carbon nanotubes and nano-TiB2 is innovatively adopted, combined with ultrasonic assisted slagging, nucleation is strengthened; during casting, three-stage composite cooling and titanium boron wire grain refinement are used to control the grain size to 50-100 mu m, significantly improve the uniformity; scientific homogenization treatment releases residual stress, improves the elongation of the cast bar and improves its subsequent plasticity; the cast bar is adapted to the high-precision extrusion demand of the micro-tube, is significantly superior to the traditional process, provides reliable blank for the stable production of high-precision micro-tube, and has extremely strong industrial application value.

The application belongs to the technical field of structural engineering and relates to a damage deformation controllable composite column-concrete beam fabricated node and a mounting method, which comprises a steel pipe concrete composite column, a prefabricated concrete beam and a self-resetting energy dissipation structure. The surface of the composite column is provided with a connecting plate and a second hinged plate, and the end of the prefabricated concrete beam is provided with an H-shaped steel and a second hinged plate, which are hinged through a pin shaft. A friction energy dissipation component is arranged between the first and second hinged plates and is used for friction energy dissipation under small earthquakes. The two ends of a plastic energy dissipation plate and a super-elastic reset plate are respectively detachably connected with the connecting plate and the H-shaped steel and are respectively used for plastic energy dissipation under medium earthquakes and super-elastic reset after earthquakes. The node is cooperated with multi-stage energy dissipation and self-resetting, realizes no damage under small earthquakes, repairable under medium earthquakes and no collapse under large earthquakes, is easy to replace after earthquakes and is suitable for high-intensity region fabricated buildings.

The invention relates to a 1350MPa-grade high-strength tool steel wire rod and a manufacturing method thereof.The method includes the steps that after medium-high carbon chemical components of high Mn-Cr-V are designed, rolled and spun into a wire rod, the wire rod is subjected to online molten salt mixing quenching isothermal treatment, the wire rod is controlled to enter a sorbite phase region from a high-temperature austenite state at the cooling speed larger than or equal to 30 DEG C / s firstly, and then the wire rod is subjected to hot rolling treatment at the cooling speed larger than or equal to 30 DEG C / s; the method comprises the following steps: quenching a steel wire rod to form a quenched structure mainly comprising sorbite and retained austenite, carrying out isothermal tempering on the quenched structure to convert the retained austenite into martensite, toughening and destressing, and carrying out roller way slow cooling to prepare the steel wire rod with a microscopic structure comprising isothermal sorbite, tempered martensite and ferrite, so that the strength and plasticity matching of the steel wire rod can be improved, and the service life of the steel wire rod is prolonged. The tensile strength can reach 1230-1380 MPa, the percentage reduction of area is 36%-41%, the steel can be directly machined into parts after cold machining forming, and production energy consumption and cost reduction and efficiency improvement of the tool steel are facilitated.

The invention provides a projectile impact resistant titanium alloy plate and a preparation method and application thereof, and relates to the technical field of high-strength steel for armor protection, and the projectile impact resistant titanium alloy plate is formed by hot rolling compounding and heat treatment of at least one high-strength titanium alloy base plate and at least one energy-absorbing titanium alloy base plate, the high-strength titanium alloy base plates and the energy-absorbing titanium alloy base plates are alternately stacked; the high-strength titanium alloy base plate on the outermost side is a projectile body impact surface of the projectile body impact resistant titanium alloy plate; the thickness ratio of the high-strength titanium alloy substrate to the energy-absorbing titanium alloy substrate adjacent to the high-strength titanium alloy substrate to the energy-absorbing titanium alloy substrate is 1: (1-20); the impedance ratio of the high-strength titanium alloy substrate to the energy-absorbing titanium alloy substrate adjacent to the high-strength titanium alloy substrate to the energy-absorbing titanium alloy substrate is (1.025-1.25): 1. By compounding two materials with different impedances, controllable unloading of incident stress is achieved, peak stress is reduced through plastic energy absorption of the back plate, crack initiation is inhibited, and BFS is reduced.

The invention belongs to the technical field of metal materials, and relates to a low-cost high-toughness corrosion-resistant casting medium-entropy alloy, the chemical formula of the alloy is FexCrNiAl < 0.37 > Ti < 0.37 >, and the value range of x is 3-6. The material is prepared through the processes of burdening, smelting, remelting, cooling curing and the like. The medium-entropy alloy provided by the invention has higher strength and better plasticity, and can meet the use requirements under complex stress conditions. And the stainless steel has excellent corrosion resistance, can show corrosion resistance comparable with that of stainless steel, and is suitable for corrosive environments such as ocean and chemical engineering. In addition, a complicated heat treatment process is not needed for secondary treatment, so that the operation steps are simplified, and the cost is reduced. And on the premise of ensuring the performance, a large amount of Fe element with relatively low price is used, so that the raw material cost of the alloy is greatly reduced, and popularization and application in the industrial field are facilitated.

The application relates to a light-weight capture and impact-reducing device suitable for an ultra-large bearing explosive bolt, which solves the problem of strong impact during capture and belongs to the technical field of spacecraft structures. The light-weight capture and impact-reducing device adopts a multi-configuration lattice structure and a special-shaped rubber pad, combines the viscoelastic deformation characteristics of rubber and the plastic energy-absorbing characteristics of a negative Poisson's ratio lattice energy-absorbing material, and realizes the capture and buffer impact reduction of a high-speed separated bolt body. The device has the advantages of good buffer effect, strong installation adaptability, light structure weight and the like.

This invention relates to a graded yielding energy dissipation connection device and its design method. The graded yielding energy dissipation connection device includes a fixed support, an upper beam, a lower beam, two steel columns, and a graded yielding energy dissipation device. The graded yielding energy dissipation device includes an X-shaped bending energy dissipation plate and an annular energy dissipation component. The annular energy dissipation component includes two sets of oppositely arranged round-end energy dissipation sections. Each round-end energy dissipation section includes an arc segment and a straight segment. An end plate is provided on the outer side of the straight segment, and the straight segment is connected to the end plate by high-strength bolts. The X-shaped bending energy dissipation plate is connected to the inner side of the two straight segments respectively, and its width changes linearly from the middle to both ends. Under minor earthquakes, the X-shaped bending energy dissipation plate dissipates energy by generating plastic deformation through out-of-plane bending. Under moderate earthquakes, the annular energy dissipation component dissipates energy by generating plastic deformation of the round-end energy dissipation section through the vertical displacement of the end plates on both sides. Under major earthquakes, the X-shaped bending energy dissipation plate and the annular energy dissipation component yield together and enter into plastic energy dissipation.

The application discloses a kind of corrosion-resistant high plasticity titanium alloy foil for wide bipolar plate and its industrialized preparation method, in view of the high requirements of fuel cell bipolar plate to conductivity and corrosion resistance, using Ni, Nb, Cu micro-alloying design, improve the corrosion resistance and plasticity of material;Adopting three vacuum self-consumption smelting method, guarantee titanium alloy ingot composition uniformity, through hot rolling, cold rolling, degreasing pickling, annealing and other processes, obtain 0.08~0.15mm thickness specification titanium alloy foil.The titanium alloy foil has excellent seawater corrosion resistance and plasticity, can meet the forming requirement of processing thickness ≥0.08mm, and can adapt to the service environment of hydrogen fuel cell bipolar plate, can replace the stainless steel substrate used in the present stage bipolar plate, achieve the effect of weight reduction, improve the corrosion resistance of substrate, thereby greatly prolong the service life of battery, will effectively solve the bottleneck problems of current domestic proton exchange membrane battery substrate, such as poor comprehensive performance, high manufacturing cost.

The invention belongs to the technical field of seismic isolation of civil engineering structures, and particularly relates to an energy consumption type seismic isolation support with a memory function, which can remarkably improve the energy consumption performance of the support and effectively enhance the resistance to small earthquakes, wind loads and initial impact of large earthquakes. Meanwhile, by means of high initial rigidity and high horizontal bearing capacity, wind vibration and daily micro vibration can be well controlled, the comfort level and safety of the structure in the normal use state are improved, displacement of a shock insulation layer or a key floor can be remarkably reduced, pipelines and non-structural components of the shock insulation layer are protected, and under the action of a large earthquake, the shock insulation layer is prevented from being damaged. The damper can fully yield and enter a plastic energy dissipation state to become a main energy dissipation component, the protection function is further achieved, due to the fact that the damper can provide part of horizontal bearing capacity, rigidity and energy dissipation, the requirements for the shearing force borne by the support body and displacement are lowered, and the support with the smaller size, the lower cost or the lower performance requirement can be selected; and related cost is saved, and environmental pollution is reduced.

Method for determining a risk of the appearance of recrystallized grains during the manufacture of a mechanical part Method (1) for determining a risk of the appearance of recrystallized grains during the manufacture of a mechanical part by casting an alloy with a metallic component in a mold, the method (1) comprising the following steps: 1) a step (E1) implementing a mechanical test on a test piece so as to characterize an imposed plastic deformation of said test piece as a function of an imposed temperature; 2) a step (E2) implementing a heat treatment for resolving said test piece, said heat treatment for resolving being capable of creating the recrystallized grains;6) a step (E6) of comparing the value of the plastic deformation potential (Pε) or the value of the plastic energy potential (PE) calculated with a threshold value, the exceeding of which corresponds to the existence of a risk of the appearance of recrystallized grains in the test piece. Figure for the abstract: Fig. 1;

The invention belongs to the technical field of pipeline structure strength analysis and plastic energy absorption structure design, and particularly relates to a method for correcting plastic damage deformation of a pipeline. The invention provides a method for correcting plastic damage deformation of a pipeline, which comprises the following steps of: further dividing a partial region into a rigid section and a residual plastic region, and continuously correcting the size of the rigid section through comparison before and after curvature to obtain a force-displacement response curve; and finally, through a finite element verification method combining a J2 plastic deformation full-amount constitutive model considering a large deformation effect and a rigid region judgment step under a one-time unloading hypothesis, and a compilation method of a corresponding Abaqus user-defined subprogram UMAT, accurate calculation of a crushing global force-displacement response curve of the cross section of the pipeline on an upper flat plate and a lower flat plate can be realized, and the accuracy of the pipeline cross section is improved. And safety evaluation and damage evaluation of the pipeline structure are realized.

The invention discloses an asphalt modifier, a preparation method thereof, modified asphalt and a preparation method and application thereof. The asphalt modifier comprises a base polymer, a flexibilizer, a compatilizer, a reinforcing agent, an anti-aging agent and a stabilizer, wherein the base polymer is SBS, and the flexibilizer is a mixture of SEBS and POE. The preparation method comprises the following steps: premixing, carrying out melt blending, adding the reinforcing agent, the anti-aging agent and the stabilizer in a molten state, uniformly mixing, extruding, cooling and pelletizing to obtain the granular modifier. The modified asphalt is prepared by adding the asphalt modifier accounting for 3-8% of the weight of the base asphalt into the matrix asphalt, heating, shearing and mixing. According to the system, through a synergistic toughening mechanism of elastic recovery and plastic energy consumption and comprehensive design of reinforcement, aging resistance and cross-linking stability, the modified asphalt has excellent low-temperature ductility, fracture toughness and fatigue life, the high-temperature softening point and storage stability are remarkably improved, and the modified asphalt is suitable for road pavement engineering in heavy-load and high-temperature severe cold areas.

The invention provides a multi-stage energy consumption prefabricated UHPC anti-collision wall and an assembling method thereof, and relates to the technical field of bridge engineering. Comprising a UHPC framework arranged at the bottom, a first U-shaped embedded steel bar, a second U-shaped embedded steel bar and an energy consumption connecting piece. The first U-shaped embedded steel bar is connected with the top wall of the reserved shear groove, the second U-shaped embedded steel bar is connected with the bridge deck platform, and a pouring hole communicated with the reserved shear groove is formed in the UHPC framework; and the UHPC framework is connected with the bridge deck platform through the energy consumption connecting piece. A specific multi-stage energy dissipation mechanism is jointly formed by energy dissipation connecting pieces, plastic energy dissipation materials and a post-pouring connecting structure composed of reserved shear force grooves and U-shaped embedded steel bars, and the plastic energy dissipation materials serve as first-stage energy dissipation and absorb initial impact energy through compression deformation; the energy dissipation connecting piece is used for second-stage energy dissipation, and main energy is dissipated through elasticoplastic deformation of the elliptical annular connecting piece; the reserved shear grooves formed by pouring and solidifying the ultra-high performance concrete and the U-shaped embedded steel bars in the reserved shear grooves serve as third-stage energy dissipation, and the final integrity and residual strength guarantee is provided.

The invention relates to a self-resetting energy dissipation connector of a rotary external wall panel. The self-resetting energy dissipation connector comprises a frame structure composed of frame beams and frame columns. Each frame structure is provided with a plurality of externally-hung wall plates, the upper portions of the externally-hung wall plates are connected with the upper frame beams through non-bearing type nodes, the lower portions of the externally-hung wall plates are connected with the lower frame beams through bearing type nodes, and the adjacent externally-hung wall plates are connected through energy dissipation steel plates. The non-bearing node comprises a second fixing steel plate assembly, a second bolt and the like, a long round hole is formed in the second fixing steel plate assembly, and the bolt is allowed to relatively slide in the direction of the long round hole under the earthquake action; the bearing type joint comprises a first fixing steel plate assembly, a first bolt, a belleville spring assembly and the like. Through the synergistic effect of wall plate rotation, plastic energy consumption, elastic reset and other mechanisms, on the premise that an additional supporting structure is not added, damage and residual deformation of the frame structure and the externally-hung wall plate under the earthquake effect are effectively reduced, and the anti-seismic toughness of connection of the externally-hung wall plate is remarkably improved.

The invention discloses a heat treatment method for electric arc fuse wire additive manufacturing of Mg-Nd-Zn-Zr series magnesium alloy. The method comprises the steps that firstly, an Mg-Nd-Zn-Zr series magnesium alloy deposition part is obtained through electric arc fuse wire additive manufacturing; secondly, the Mg-Nd-Zn-Zr series magnesium alloy deposition part is subjected to solution treatment; and thirdly, the solid solution state Mg-Nd-Zn-Zr series magnesium alloy deposition piece is subjected to two-stage aging treatment, and the high-strength and high-plasticity Mg-Nd-Zn-Zr series magnesium alloy is obtained. The solid solution and two-stage aging heat treatment process is adopted, the residual internal stress and structure defects in the electric arc fuse wire additive manufacturing Mg-Nd-Zn-Zr series magnesium alloy are effectively eliminated, the grain shape and size are regulated and controlled, uniform dispersion and precipitation of a strengthening phase are promoted, the Mg-Nd-Zn-Zr series magnesium alloy with the uniform and compact structure and the high-strength and high-plasticity performance is obtained, and the high-strength and high-plasticity Mg-Nd-Zn-Zr series magnesium alloy is obtained. The method is suitable for the fields of aerospace, national defense and military industry and medical treatment.

The present invention relates to a 1300MPa-grade high-strength tool steel wire rod and a manufacturing method thereof. The wire rod is designed with a medium-carbon composition of Cr-Nb-V and is rolled and spun into a wire rod. The wire rod is then subjected to an online molten salt micro-quenching and tempering treatment. The wire rod is cooled from a high-temperature austenite state to a lower bainite phase region at a cooling rate of 31°C / s or higher, thereby forming a quenched structure mainly composed of quenched bainite. The quenched structure is then subjected to isothermal tempering and toughening stress relief treatment. Finally, the quenched structure is slowly cooled through a roller to form a wire rod with a microstructure including tempered bainite and ferrite. The method can appropriately control material costs, improve the matching of strength and plasticity of the wire rod, achieve a tensile strength of 1255-1305MPa, and a cross-sectional reduction rate of 58%-63%. The wire rod can then be directly processed into parts after cold forming, thereby reducing energy consumption and costs and improving efficiency in tool steel production.

The invention provides a multifunctional ECC superimposed structure system for a weak area of a station tunnel structure and a construction method of the multifunctional ECC superimposed structure system. The structural system comprises an outer-side crack control type ECC layer, a middle debonding softening layer and an inner-side bearing type ECC layer, and the outer-side ECC layer improves the crack control capacity and the self-healing performance by doping a tensile reinforcing material or a self-healing functional material; the debonding softening layer is made of a weak interface or low-friction material, so that the outer side ECC layer and the inner side ECC layer generate controllable interface slippage when the stress reaches a preset threshold value, and differential deformation is realized; a controlled yield micro-block unit is arranged in the inner side ECC layer and is used for forming a transferable plastic energy consumption zone; a guide and drainage micro-channel is arranged between the outer ECC layer and the debonding layer, local water pressure can be released when cracks or water pressure reaches a threshold value, and the leakage risk is reduced. The structural system achieves the synergistic effect of bearing, crack control, self-healing, waterproof and energy dissipation functions through bearing layer prefabrication and outer layer on-site overlapping, is suitable for station side walls, tunnel linings and other weak parts, and can remarkably improve the long-term safety, anti-seismic toughness and use performance of a station tunnel structure.

The utility model relates to the technical field of batteries, in particular to a protection plate, a battery pack shell, a battery pack and electric equipment. The protection plate comprises a plastic energy absorption layer; and the brittle energy absorption layer is connected with the plastic energy absorption layer. Due to the influence that force is diffused to the periphery after the fragile energy absorption layer is broken, the transmission range of the force in the fragile energy absorption layer is wider, the energy absorption participation range of the plastic energy absorption layer connected with the fragile energy absorption layer is wider, and therefore the overall anti-impact protection capacity and the overall anti-impact protection capacity of the protection plate are improved.

The invention discloses an earthquake damage assessment method, device and equipment for a large-span space grid structure, and relates to the technical field of structure earthquake damage assessment. The earthquake damage assessment method comprises the following steps: constructing a finite element model of a to-be-assessed large-span space grid structure; respectively carrying out time-history analysis on the finite element model through a self-adaptive dynamic increment time-history analysis method by utilizing an artificially simulated earthquake acceleration time-history curve and a target earthquake acceleration time-history curve to obtain maximum elastic vertical displacement, quasi-collapse displacement, quasi-collapse cumulative plastic energy consumption, target maximum vertical displacement and first structure cumulative plastic energy consumption; and calculating a damage index of the to-be-evaluated large-span space grid structure, and determining a damage level corresponding to the damage index. By adopting the method, the accuracy can be effectively improved, the standard is unified, and the application range is expanded.

The invention relates to the technical field of battery shells, in particular to an energy storage battery plastic shell with a reinforcing structure, which comprises a battery box, a front cover, a numerical control panel, a heat exchange box, a heat dissipation box, a heat dissipation mechanism, a buffer cylinder, a buffer mechanism, a micro-motion box and a circuit breaking mechanism. According to the invention, through the design of the cuboid battery compartment which is vertically arranged on the single side, part of the battery shell can stably bear the overlapped weight of a plurality of battery modules. And cooling liquid can be conveyed between the battery packs through the heat dissipation mechanism, so that the cooling liquid can conveniently and effectively exchange heat with adjacent surfaces of the battery packs. Part of high-temperature expanded cooling liquid can be discharged into the buffer container through the buffer mechanism, so that the buffer container can adapt to and stabilize the hydraulic pressure of the cooling liquid in a self-adaptive mode. And the battery pack can automatically cut off power supply in a high-temperature environment through the circuit breaking mechanism, so that part of the battery pack is effectively prevented from being damaged and spontaneously combusted due to long-time operation in the high-temperature environment, and the stability, the high efficiency and the protection performance of the device are improved.

This invention relates to the field of bridge engineering technology, and discloses a bridge pier-tie beam node with a compressible bendable steel plate. Located at the intersection of the pier and tie beam, it includes a weakened tie beam located at the end of the tie beam facing the pier, with a cross-sectional height smaller than that of the tie beam. Compressible bendable steel plate assemblies are located above and below the weakened tie beam, and buckling-resistant cover plate assemblies respectively clamp the upper and lower bendable steel plate assemblies. The two ends of the upper and lower bendable steel plate assemblies are fixedly connected to the pier and tie beam, respectively. The bendable steel plate assembly of this invention exhibits "secondary yielding" characteristics under both tension and compression; it also features a "weak-to-strong" characteristic and large deformation capacity. Combined with the relatively low stiffness of the weakened tie beam cross-section, this allows the pier under seismic loading to form a "strong column, weak beam" failure mode, controlling the location of the damage plastic hinge at the plastic energy dissipation node.

The utility model discloses a reactor and relates to the technical field of battery preparation instruments, the reactor is used for preparing battery media, the reactor comprises a concrete main body and a corrosion-resistant layer, a reaction cavity is arranged in the concrete main body, the reaction cavity is used for storing reaction solution, and the corrosion-resistant layer is arranged on the cavity wall of the reaction cavity. The concrete main body can provide the reaction cavity, the reaction cavity can contain the reaction solution, and the reaction solution can react in the reaction cavity to prepare the required battery medium, such as a lithium iron phosphate battery medium. The concrete body is low in cost, fast in forming and high in plasticity, and the problems of high cost of non-metal materials and the like can be solved. In addition, the inner wall of the concrete body is further provided with the corrosion-resistant layer, the corrosion effect of the reaction solution on the concrete body is effectively eradicated, and the service life of the concrete body is prolonged.

The invention provides a softening and tabletting device and a softening and tabletting method, and the softening and tabletting device comprises a softening bin which is used for accommodating materials and introducing steam to carry out steam softening treatment on the materials; and the tablet press is arranged at the discharging downstream of the softening bin, is used for tabletting the softened materials, and comprises a first roller, a second roller and a differential mechanism, and the differential mechanism is used for driving the first roller and the second roller to oppositely rotate in a rotating speed difference mode. According to the method, the plasticity required by subsequent tabletting is quickly obtained by the materials through steam softening treatment, the traditional water soaking procedure can be omitted, the problems of high water consumption, high pollution discharge and nutrition loss caused by soaking are solved, and a loose sheet structure is formed through differential tabletting, so that water permeation can be facilitated.

The application discloses a kind of across fault zone bridge shock absorption and isolation protection system and shock absorption and isolation method, including beam body, shock absorption and isolation support, pier, buffer and metal damper, the shock absorption and isolation support is fixedly installed between beam body and pier;The metal damper is fixed on the top of pier and corresponds the end position of beam body, the top of metal damper is fixedly installed with buffer, and a certain interval is reserved between the buffer and the end of beam body, by integrating buffer and metal damper and arranging in the end of beam body, and cooperated with the shock absorption and isolation support arranged in the middle of span, form step shock absorption and isolation protection system, build working condition grading energy dissipation mechanism, small displacement working condition is independently energy-dissipated shock absorption by shock absorption and isolation support, large displacement working condition relies on buffer elastic energy dissipation reset, displacement overrun is by metal damper plastic energy dissipation, each component is successively connected energy control and shape control, adapt to fault dislocation and earthquake working condition of cross fault zone bridge, effectively improve the seismic and anti-misalignment adaptability of bridge.

The application relates to a 1350MPa-grade high-strength tool steel wire rod and a manufacturing method thereof, after high-Mn-Cr-V medium-high-carbon chemical component design rolling is performed to form the wire rod, and on-line molten salt mixed quenching isothermal treatment is performed, the wire rod is first controlled to enter a sorbite phase region from a high-temperature austenite state at a cold speed of greater than or equal to 30 DEG C / s, a quenched organization mainly formed of sorbite and residual austenite is formed, then isothermal tempering is performed on the quenched organization, residual austenite is converted into martensite, and then stress relieving treatment is performed, finally, after roller slow cooling, the wire rod is prepared, the microstructure of the wire rod includes isothermal sorbite, tempered martensite and ferrite, the strength and plasticity matching of the wire rod can be improved, the tensile strength can reach 1230-1380MPa, the area reduction can be 36%-41%, after cold working, the wire rod can be directly processed into a part, and the tool steel production energy consumption, cost reduction and efficiency improvement are favorable.

The application relates to a controllable strain amplitude energy dissipation steel damper, which comprises a first flat plate and a second flat plate arranged in parallel, the first flat plate is connected with a main beam, the second flat plate is connected with a pier or a bent cap, a plastic energy dissipation component is arranged between the first flat plate and the second flat plate, the plastic energy dissipation component comprises plastic energy dissipation strips alternately wound on the first flat plate and the second flat plate, and the two ends of the plastic energy dissipation strips are fixedly connected with the second flat plate; when an earthquake occurs, the first flat plate and the second flat plate relatively dislocate, the plastic energy dissipation strips plastically deform and limit the relative dislocation of the first flat plate and the second flat plate. Compared with the prior art, the damper has the advantages of controllable strain amplitude, adjustable maximum stroke, good fatigue performance, simple structure, strong economy, convenient maintenance and repair after the earthquake, only the bolts of the first flat plate and the second flat plate need to be screwed off, and the plastic energy dissipation strips need to be replaced, and the damper is suitable for promotion and application.