995 results about "Structural material" patented technology

A building module for use in construction of a building comprising a deck oriented in a horizontal plane and a plurality of hollow structural members extending downwardly from around a periphery of the deck. A method of constructing a building comprising placing a plurality of modules according to a floor plan to form a story of the building, pouring flowable medium that sets to a become a solid structural material into the hollow structural members of the plurality of modules to form structural columns, pouring flowable medium that sets to a become a solid structural material onto the decks of the plurality of modules for form structural slabs, and allowing the structural columns and structural slabs to set to complete the story of the building.

The invention provides a system for space heterostructure material additive manufacturing, and aims to solve the problems of heterogeneous powder pollution and recovery, space heterostructure deposition workpiece precision optimization, defect control and the like in the prior art. The system comprises a device shell, a heterogeneous powder feeding and recycling device, an additive rolling cooperation platform, an ultrasonic vibration clamping platform and a powder screening and collecting device. The heterogeneous powder feeding and recycling device controls a rotating round block and a tapping sliding block to move through a servo driving mechanism to achieve switching and recycling of heterogeneous powder and cleaning work of a powder feeding path. The material adding and rolling cooperation platform integrates a 3D material adding mechanism, a powder cleaning mechanism and a rolling mechanism, the angle of a nozzle is adjusted by driving a bevel gear transmission assembly, cleaning of residual powder on the deposition surface under different defocusing amounts is achieved, and the material adding and rolling cooperation platform cooperates with the rolling mechanism to flatten the deposition surface. The ultrasonic vibration clamping platform improves the deposition quality of the laser directed energy deposition (LDED) spatial heterostructure through precise clamping and ultrasonic vibration.

The invention discloses a microencapsulation repairing agent and an intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material, the microencapsulation repairing agent is mainly composed of a humidity-responsive outer layer, a pH-responsive middle layer and a temperature-responsive inner layer, and the outer layer is modified with a silane coupling agent. The intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material is mainly prepared from the microencapsulated repairing agent, nano carbon black, nano montmorillonite, nano cellulose and other raw materials. According to the invention, by introducing the self-repairing microcapsule with a specific structure and materials such as nano carbon black, nano montmorillonite and nano cellulose, the strength, toughness and durability of the concrete are remarkably improved, and the concrete has an intelligent self-repairing function.

The invention provides a cement-based marine floating structure stability control method based on a dynamic water tank adjustment algorithm, which is applied to a dynamic water tank adjustment system of a cement-based marine floating structure, and the system comprises a water tank module, a sensing network, an execution mechanism and a central control unit, the method comprises the following steps: monitoring the change of the water level in the water tank module and the shaking angle data of the cement-based offshore floating structure through a sensing network; the central control unit analyzes the data acquired by the sensing network in real time, predicts the wave load change trend in a period of time in the future, simulates the stress state of the structure, and generates a target water level value of the water tank module in combination with the characteristics of the structure material; according to the target water level value and the real-time water level value, the execution mechanism is controlled to adjust the water level of the water tank module so as to achieve stability control over the cement-based offshore floating structure, water tank adjustment and material characteristics are accurately matched, control failure or structural damage can be avoided, and then the structural stability is improved.

The invention provides a structural material corrosion damage cross-scale evaluation method and system, and belongs to the field of service performance cross-scale evaluation. The method comprises the following steps: firstly, collecting corrosion data of related structural materials, establishing a structural material service safety evaluation database based on the corrosion data, and then respectively extracting material scale characteristics and structural scale characteristics of corrosion damage of the structural materials; predicting the service life of the structural material according to the scale characteristics of the material; setting a service safety evaluation index of a material scale and measuring the service safety evaluation index; predicting the service life of the structural material according to the structural scale characteristics; setting a service safety evaluation index of a structure scale and measuring the service safety evaluation index; and carrying out cross-scale correlation on the material scale characteristics and the structure scale characteristics, constructing a transmission model for representing the service performance through material-structure cross-scale correlation, fusing the evaluation indexes of the material scale and the structure scale, generating the evaluation index of the structure material, and evaluating the service performance of the structure material. The accuracy and precision of corrosion damage evaluation are improved.

The invention discloses an integrated preparation method of a SiC-based composite material environment barrier coating in the technical field of aviation thermal structure materials, which comprises the following steps: cleaning a substrate, carrying out vacuum impregnation of phenolic resin and curing, coating Si slurry to form a bonding layer, coating rare earth silicate slurry to form a barrier layer, and drying to obtain the SiC-based composite material environment barrier coating. And finally carrying out high-temperature heat treatment in an inert atmosphere. According to the method, through an integrated slurry coating and gradient curing process, the performance of a base body is protected, and meanwhile efficient preparation of the coating is achieved; by adopting an integrated slurry coating and gradient curing technology and combining with an optimized medium-temperature sintering process, the matrix performance is effectively protected while the compactness of the coating is ensured, the bonding strength and interface stability of the coating are improved through the design of the phenolic resin transition layer and the silicon bonding layer in cooperation with the rare earth silicate barrier layer, and the bonding strength of the coating is improved. And the coating shows excellent protection performance in a high-temperature corrosion environment.

The invention discloses a porcelainized expansion type fireproof heat-insulating coating and a preparation method thereof, and relates to the technical field of fire prevention, and the fireproof heat-insulating coating comprises an inner coating and an outer coating; the preparation method comprises the following steps: S1, weighing the raw materials of the component A and the component B; s2, preparing the component A; s3, preparing a component B; s4, the surface of the steel structure is coated with the component A, and an inner coating of the fireproof heat-insulating coating is obtained after normal-temperature drying; and continuously coating the surface of the dried inner coating with the component B through a spraying or brushing method, and drying at normal temperature to obtain the ceramifiable expansive fireproof heat-insulating coating. A porcelainized reaction and an intumescent flame-retardant system are combined to protect the steel structure material from two aspects of efficient flame retardance and high-temperature heat insulation, and the effect is excellent; a nitrogen-phosphorus synergistic flame retardant is used for actively inhibiting the flame combustion process, a high-temperature expansion layer formed by expansible graphite and a vitrifiable heat insulation layer formed by ceramic forming filler are used for greatly improving the high-temperature stability and heat insulation efficiency of a carbon layer, and the fire endurance of a steel structure is prolonged.

The invention discloses a braille point display device. According to the Braille point display, the shape memory alloy material is used as the lifting structure, and the lifting structure is controlled to deform under the power-on condition, so that the point display part is driven to extend or retract relative to the mounting main body. Compared with piezoelectric driving and electromagnetic driving equipment, the shape memory alloy material can adjust the deformation quantity through the power-on state, large deformation quantity can be generated through a small structural material, the size of a lifting structure does not need to be increased, the driving structure of the braille convex points is effectively simplified, the size of the equipment is reduced, and the production cost of the equipment is reduced. And meanwhile, the locking mechanism is arranged, so that the telescopic state of the point display part is kept, the situation that the lifting structure is always kept in a power-on state is avoided, and the power consumption of equipment is reduced.

The invention belongs to the technical field of metal matrix composite materials, and relates to a tungsten-copper three-dimensional orthogonal woven composite material and an intelligent design method thereof.The composite material comprises a space interwoven network structure formed by tungsten fiber skeletons arranged in the X orthogonal direction, the Y orthogonal direction and the Z orthogonal direction, and the tungsten fiber skeletons are wrapped by a copper matrix to form a three-dimensional heterogeneous composite system; the method comprises the following steps: generating a composite material structure based on parametric modeling, acquiring mechanical and electrical performance data by utilizing finite element and multi-physics field simulation, and constructing a structure-performance data set; performing performance prediction by adopting three types of machine learning models, namely ANN, SVR and LightGBM, and determining an optimal model in combination with Bayesian optimization; performing parameter reverse screening based on the optimal agent model, screening a structural combination meeting performance constraints, and constructing a closed-loop optimization process through simulation verification and model iteration; according to the method, efficient design and accurate performance prediction of the composite material structure can be realized, and the method is suitable for high-performance electromagnetic structural materials.

The invention relates to the technical field of pressure sensors, and discloses a structural design method and device applied to a brake pressure sensor, and the method comprises the steps: analyzing the material performance of a sensor material, and analyzing the material demand of a brake demand related to the sensor material; the material matching degree between the material performance and the material requirement is calculated, and the structural material of the brake application scene is determined from the sensor materials; querying geometric parameters of the assembled sensor, and performing force-electricity simulation on the assembled sensor through the piezoelectric constitutive model; the brake sensitivity of the assembled sensor is calculated according to the force-electricity simulation result, the brake failure rate of the assembled sensor is calculated according to the force-electricity simulation result, and defect reason analysis is conducted on the brake sensitivity and the brake failure rate; and querying a structure optimization material of the assembled sensor, and performing structure optimization on the assembled sensor by utilizing the reason analysis result and the structure optimization material. According to the invention, the structural design and materials can be optimized, and the sensitivity and environmental adaptability of the sensor are improved.

The invention belongs to the technical field of metal composite materials and hydrogen storage and transportation materials, and particularly relates to a high-strength hydrogen-embrittlement-resistant layered metal composite material for hydrogen storage and a preparation method and application of the high-strength hydrogen-embrittlement-resistant layered metal composite material. According to the preparation method, the nickel-saving austenitic stainless steel (NEASS) and the 30CrMo steel are alternately overlapped in a multi-layer mode, and the processes of vacuum electron beam welding, high-temperature hot rolling, accumulative ply rolling, multi-stage heat treatment and the like are combined, so that the composite board with the layer number reaching hundreds of layers, firm interface bonding, excellent mechanical performance and good hydrogen embrittlement resistance is prepared; the technical problem that strength, toughness and hydrogen brittleness resistance of an existing metal material in a high-pressure hydrogen environment are difficult to consider at the same time is solved. The obtained composite material has high strength, high plasticity and excellent hydrogen embrittlement resistance, and is suitable for structural materials of high-pressure hydrogen storage tanks, hydrogen conveying pipelines and other key hydrogen energy equipment.

A wall having a 3D wire mesh panel having a core with a 3D wire mesh matrix extending through and out the core, and a structural material, such as concrete, envelopes the panel. A form positioned about the panel is used to introduce the concrete to the panel during production. Methods for producing the wall, which include producing the wall vertically at a desired location.

The invention relates to a method, a system and equipment for predicting creep stress at a joint of a concrete structure and a medium. The method comprises the following steps: testing a concrete structure material and a concrete structure joint filling material, and constructing a joint material performance database based on test data; constructing a multi-scale mechanical model comprising a macrostructure model and a microcosmic interface model based on the seam material performance database; constructing an interface constitutive relationship based on the seam material performance database and the multi-scale mechanical model; and predicting the creep stress at the joint of the concrete structure based on the material performance database at the joint, the multi-scale mechanical model and the interface constitutive relationship. The method can fully consider the sudden change of the performance of the material at the joint and the interface effect, provides reliable technical support for the safety evaluation and maintenance of the concrete structure, and is particularly suitable for engineering application of large-span and high-rise buildings and the like with higher requirements on the long-term performance of the structure.

The invention belongs to the technical field of research and development of fast neutron reactor jackets and structural materials, and particularly relates to a high-temperature-lead-bismuth-corrosion-resistant high-silicon-content ferrite / martensite steel ladle tube and a preparation method thereof. According to the mass percentage, the composition mainly comprises the following components: 0.16-0.24% of C; 0.4 to 0.8 percent of Mn; cr: 11.6% to 12.4%; 1.2 to 1.8 percent of W; 0.1 to 0.4 percent of Ta; 0.2 to 0.4 percent of V; 1.0%-1.8% of Si and Fe. The preparation method comprises the steps of vacuum induction and vacuum arc remelting. Carrying out homogenization treatment and forging; extruding and annealing; cold rolling and annealing; and performing normalizing and tempering treatment. Through an efficient short-flow process route and reasonable smelting, pipe machining deformation and heat treatment processes, the microscopic structure of the material is remarkably improved, then the mechanical property and high-temperature lead and bismuth corrosion resistance of the finished pipe are improved, and the use requirement of the lead and bismuth cooling fast reactor fuel assembly cladding material under the high-temperature working condition is met.

A method and system for additive manufacturing are provided herein. The method comprises depositing a structure material, by a nozzle (810), into a support material (808) by applying to the structure material such that the structure material flows through the nozzle. The structure material comprises a polymer and a rheological modifier. Depositing of the structure material is repeated as necessary to create an object (814). The support material is at least partially removed from object. In various examples, the method comprises varying a print parameter from a first portion of the object to a second portion of the object, moving the nozzle away from a previously deposited layer of the object when repositioning for deposition of a subsequent layer of the object, or a combination thereof.

A wall having a 3D wire mesh panel having a core with a 3D wire mesh matrix extending through and out the core, and a structural material, such as concrete, envelopes the panel. A form positioned about the panel is used to introduce the concrete to the panel during production. Methods for producing the wall, which include producing the wall vertically at a desired location.

The invention relates to the technical field of nondestructive testing and performance analysis of engineering materials, in particular to a nondestructive testing and performance degradation analysis method for bridge structure materials. The method comprises the following steps: acquiring material nondestructive testing monitoring data, and executing unified alignment, noise portraying and quality labeling; carrying out combined noise reduction and component evaluation, and generating a noise reduction parameter snapshot; extracting a marginal spectrum and characteristic energy ratio, and establishing a material characterization characteristic index dictionary; calculating a variation index, judging material performance degradation, and constructing a supervision signal; and training the prediction network, generating a trend and a residual error, and completing early warning fusion by adopting a time neighborhood consistency strategy to obtain a material performance degradation early warning level sequence. According to the method, continuous nondestructive monitoring and quantitative characterization of material levels are realized, characteristics and parameters are traceable, cross-channel and cross-time evaluation is consistent, prediction and early warning are sensitive and stable, and the method is suitable for long-term service safety evaluation.

The present invention relates to the technical field of refractory materials, and specifically discloses a lightweight and high-strength refractory ceramic material and a preparation method thereof, comprising 30%-40% lightweight filler (expanded perlite or glass microspheres), 20%-30% corundum or mullite, 10%-15% silicon carbide, 10%-20% high bauxite and 1%-5% dispersant, an oven is used to dry the lightweight filler, a ball mill is used to crush the corundum or mullite and silicon carbide, and a vibrating screen is used to screen them. The present invention ensures that the final ceramic material has the advantages of light weight, high strength, good thermal shock resistance, excellent thermal insulation, high temperature resistance, corrosion resistance, etc., is suitable for structural materials or thermal insulation materials in high temperature environments, and the precise control of humidity, temperature and molding pressure during the preparation process improves the uniformity and performance stability of the material, ensuring an efficient production process.

The invention relates to a method and device for determining the deposition rate of corrosion products in a reactor coolant. The method comprises the following steps: acquiring the particulate matter concentration of a structural material corrosion product in a liquid metal coolant; determining the deposition rate of the particulate matters in the corrosion product according to the particulate matter concentration and the stopping distance of the corrosion product; the stop distance is used to characterize the distance at which the corrosion product particles move to deposit with the coolant. By the adoption of the method, the stopping distance of the corrosion product can be considered when the deposition rate of the particulate matter is determined, and compared with a deposition rate determining mode that the corrosion product is assumed to be completely deposited at the release position of the structural material and the deposition lag condition is ignored in the related technology, the deposition rate can be determined more accurately. In addition, the deposition rate of the corrosion product particulate matter in the liquid metal coolant is determined in a one-dimensional solution mode, the deposition rate of the particulate matter in the corrosion product can be determined more efficiently, and the method is more suitable for engineering practical application.

The invention provides a high-temperature-bearing nickel-based powder high-temperature alloy and a preparation method thereof. The alloy comprises the following elements in percentage by mass: 6.0% to 9.0% of Cr, 15.0% to 16.0% of Co, 5.0% to 8.0% of W, 1.0% to 2.0% of Mo, 3.0% to 4.0% of Al, 3.0% to 4.0% of Ti, 3.0% to 3.5% of Nb, 2.0% to 3.0% of Ta, 0.0% to 0.1% of Zr, 0.02% to 0.3% of C, 0.02% to 0.03% of B, 0.0% to 0.5% of Hf, 0.0% to 1.0% of Fe and the balance of Ni, and other trace elements and inevitable trace or impurity elements which are beneficial to the high-temperature alloy. The nickel-based powder superalloy provided by the invention has excellent high-temperature mechanical properties, and meets the requirements of rotating parts in aero-engines and aerospace power systems on high-temperature-bearing structural materials.

The invention discloses a dangerous and large project safety management system, and belongs to the technical field of building construction safety monitoring. According to the system, vibration sensors are arranged on the boundary of a construction area, inclination sensors are installed on the surface of a supporting structure, static force level gauges are arranged corresponding to settlement monitoring points, and soil pressure boxes are buried in the side wall of a foundation pit in a layered mode, so that multi-dimensional data collection is achieved. A finite element analysis model is adopted in an edge calculation unit arranged in the area controller, supporting structure material parameters serve as input, and theoretical values are dynamically calculated in combination with real-time monitoring data. When the deviation between the measured data and the theoretical value exceeds a first threshold value, the historical mean value is automatically fused for iterative calculation, and if the deviation still exceeds a second threshold value after continuous three times of iteration, primary early warning is triggered. The system can evaluate the safety state of the supporting structure in real time, effectively prevents collapse accidents, and is suitable for safety management of dangerous and large projects such as building foundation pits and tunnels.

The invention discloses a tin-based alloy preformed soldering lug and a preparation method thereof.The preparation method comprises the following steps that a copper fiber reinforced framework with gradient density distribution is prepared, the copper fiber reinforced framework comprises a high-density area and a low-density area, and hollowed-out gaps are formed through a weaving technology; tin-based slurry with different components and functions is prepared from outer-layer slurry with tin-antimony-copper-nickel as a main body, middle-layer slurry with tin-antimony-copper as a base body and inner-layer slurry with tin-antimony-copper rare earth as a base body, the three kinds of tin-based slurry are sequentially filled into preset areas of hollow-out gaps of a reinforced framework, and a gradient structure material is formed; the gradient structure material is subjected to press-fit forming and post-treatment, and a preformed soldering lug is obtained; a framework is firstly built, then materials are filled, and copper fibers in the soldering lugs provide good support and heat conduction channels, so that a gradient transition structure with continuous change of components and performance is realized, and the integrity, the impact resistance and the bonding strength of the materials are greatly enhanced.

The invention discloses an underwater explosion load forecasting method and system based on a system parameter constraint neural network, and the method carries out the underwater explosion test and numerical research according to the characteristics of an actual structure and the environmental factors of the actual structure. The method comprises the following steps: collecting input characteristic data including an explosion source, a distance, an environment and a target structure and a corresponding load target value and amplitude sequence, and preprocessing each group of data to form a training test database; correlation analysis and importance calculation of the input features and the load target are carried out in sequence to realize feature number optimization; further establishing a system parameter constraint model load forecasting model, and constructing a load forecasting model of a hybrid neural network based on system parameter constraint by taking physical constraint and network output as new input of a multi-layer perceptron according to actual engineering requirements; and finally, forecasting the load of the whole underwater explosion process at the specific position according to the explosion source, the distance, the environment and the characteristic parameters of the target structure.

Two shot knuckles include a first shot component and a second shot component. Both shot components are composed of different dielectric materials, where the first shot is composed of a relatively high strength structural material and the second is composed of a cosmetic material. The first shot component can physically couple two conductive sections together by interfacing with a coupling structure of that section. The first shot component includes second shot retaining regions and a cosmetic region. The second shot component occupies the cosmetic region and anchors itself to the first shot component using the second shot retaining regions. The second shot may be the only part of the two-shot knuckle visible to a user of an electronic device and can exhibit any desired color.

The invention belongs to the technical field of geographic information systems and PS-InSAR, and discloses a stress-strain-considered InSAR building deformation risk assessment method, which comprises the following steps: carrying out PS-InSAR processing on time sequence SAR image data to obtain a time sequence deformation result and carrying out precision verification; adopting a PS point correction method based on a self-adaptive building contour to screen out PS points of the building; selecting five indexes of building strain, building cumulative inclination amount, building cumulative settlement amount, building age and building structure material type; building risk assessment modeling is carried out by applying an analytic hierarchy process, consistency check and weight calculation are carried out, and the maximum characteristic value of a judgment matrix established by the five risk assessment indexes is calculated; grading the indexes of the model, performing risk assessment on each index, and drawing; and verifying a building risk assessment result in combination with actual dangerous house data. According to the invention, accurate evaluation of the deformation risk level of the building is realized.

The invention discloses a platinum-based alloy baffle material for an airspace engine, and belongs to the technical field of precious metal alloy materials. By optimizing alloy components and the preparation method, the problems that platinum-based alloy is insufficient in high-temperature mechanical property, rare earth elements are seriously burnt and the like are successfully solved, and a new-generation platinum-based high-temperature structural material with excellent high-temperature mechanical property and oxidation resistance is developed. The material comprises the following components in percentage by mass: 25.0%-30.0% of Ir, 0.10%-1.00% of Sm, 0.10%-1.00% of Ce and the balance of Pt, the preparation method comprises the following steps: weighing a mixture of platinum, iridium, samarium and cerium metals, and sequentially carrying out pre-alloying, vacuum induction melting, pouring, solution treatment and aging treatment, thermoplastic processing, cutting and surface treatment to obtain the platinum-based alloy baffle material for the airspace engine. The tensile strength of the material reaches 48 MPa at the temperature of 1500 DEG C, and the lasting creep life exceeds 54 h under the stress of 50 MPa; under severe thermal shock and cavitation conditions, the surface of the alloy is kept intact, and the 10h oxidation weight gain is lower than 1.6 mg / cm < 2 >.

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 belongs to the technical field of stress corrosion tests, and particularly relates to a dry-wet alternating environment stress corrosion test device and method.The test device is simple in structure, convenient to operate and suitable for stress corrosion tests of metal materials of dry-wet alternating parts of ships, wharfs and other equipment facilities. Therefore, the corrosion performance and the residual life of the metal and the component thereof under the stress action of pulling, bending and the like in the dry-wet alternate harsh marine environment are measured, and a basis is provided for material selection, structural design and the like of key stress parts such as related equipment facilities. The test method is based on corrosion equivalent conversion, the seawater medium flow velocity is controllable, stress corrosion test parameters of the dry-wet alternating environment can be reasonably determined, and corrosion damage of the dry-wet alternating part of the equipment under the long-term stress service condition can be rapidly reproduced under the condition that the stress corrosion mechanism and the damage development process are not changed; the test time is greatly shortened, the test cost is reduced, and rapid screening and examination verification of novel structures / materials of equipment are realized.

The invention relates to the technical field of metal plate rolling processing, and discloses a rolling strengthening method capable of reducing the rigidity of a metal plate, which comprises the following steps: applying an asymmetric rolling condition to an initial plate to enable the plate to generate a speed gradient in the thickness direction; the plate is subjected to one-pass large-rolling-reduction rolling, and a non-continuously-distributed shear band is formed; the rolled plate is heated to the dynamic recrystallization temperature interval of the plate, and multi-pass small-rolling-reduction warm rolling is conducted on the plate; and in the warm rolling process, dynamic recrystallization of a shear band is promoted to form a grain-refined continuous core layer, complete recrystallization of the surface structure of the plate is inhibited to keep the work hardening state of the plate, and therefore the metal plate with the rigidity lower than that of an initial plate is obtained. According to the invention, a soft core-hard shell heterostructure is constructed in the plate, high strength and low macroscopic rigidity are synergistically realized, the process controllability is strong, and the method is suitable for preparation of high-performance structural materials.

The low-alloy high-hardenability ultrahigh-strength steel comprises the following chemical components in percentage by mass: 0.29 to 0.33 percent of C, 1.30 to 1.60 percent of Mn, 1.30 to 1.60 percent of Si, 1.10 to 1.40 percent of Cr, 0.40 to 0.50 percent of Ni, 0.30 to 0.50 percent of Mo, 0.08 to 0.15 percent of V, less than or equal to 0.20 percent of Cu, 0.02 to 0.06 percent of Ti, 0.001 to 0.005 percent of B, 0.01 to 0.06 percent of Al, less than or equal to 0.0060 percent of S, less than or equal to 0.013 percent of P and the balance of Fe. On the basis of 30CrMnSiA, a trace amount of alloy elements Ni, Mo, V, Ti, B and Al are added, and the high-strength steel with the strength of 1600 MPa is obtained in cooperation with a production process; and meanwhile, excellent hardenability is obtained, and the steel can be used as a civil structural material and also can be suitable for the military industry.