119results about How to "Improve use value" patented technology

This invention discloses a method for preparing high-quality bio-based 1,9-nonanediol, comprising the following steps: transesterification, precipitation, fatty acid methyl ester refining, ozone oxidation pyrolysis, solvent recovery, esterification, dimethyl azelaate refining, and hydrogenation to obtain high-quality bio-based 1,9-nonanediol. This invention achieves gradient and full-component utilization of vegetable oil raw materials: the oil-based portion of triglycerides is used to produce high-quality bio-based 1,9-nonanediol, while simultaneously producing byproducts such as methyl palmitate, methyl stearate, propionic acid, hexanoic acid, and nonanoic acid; the glycerol-based portion of triglycerides is used as a byproduct of glycerol production. This invention utilizes esterification to reconstruct the products of ozone oxidation pyrolysis, converting the high-boiling-point monomethyl azelaate into the low-boiling-point dimethyl azelaate, achieving efficient separation from saturated fatty acid methyl esters. The dimethyl azelaate, as a raw material, is then hydrogenated to obtain high-quality nonanediol, significantly reducing production costs.

The utility model relates to a recovery device for improving the recovery value of EVA (Ethylene Vinyl Acetate) in a waste photovoltaic module, which effectively solves the problems that the existing waste photovoltaic module recovery system lacks effective utilization of tar and does not realize higher resource recovery economic value. According to the recovery device for improving the EVA recovery value in the waste photovoltaic module, macromolecular long-carbon-chain alkane or olefin generated by EVA pyrolysis can be catalytically cracked into short-carbon-chain molecules, high-value gasoline or kerosene is generated after cooling, and the economic value of EVA recovery is improved; meanwhile, catalytic cracking and pyrolysis are combined, high-temperature tar molecules generated by pyrolysis can be directly subjected to catalytic cracking, so that energy consumption required by catalytic cracking can be reduced, gas generated by pyrolysis and catalytic cracking enters a combustion furnace after being cooled, energy for maintaining the system is provided, the utilization value is improved, and the energy consumption is reduced. Therefore, high-value recycling of the waste EVA is achieved, resource waste is avoided, and development of the waste photovoltaic module recycling industry is promoted.

The invention discloses a method for preparing porous activated carbon based on pulse electrochemical activation, the porous activated carbon and application, and the method comprises the following steps: preparing a working electrode plate from carbon powder, and placing the working electrode plate in an electrolyte for pulse electrochemical square wave circulation treatment, wherein the electrolyte is an aqueous solution containing sulfuric acid, persulfate, sulfate and a cationic surfactant, stripping, cleaning and drying to obtain the porous activated carbon. According to the preparation method, the carbon powder is prepared into the working electrode plate, and the working electrode plate is subjected to pulse electrochemical square wave circulation treatment in the electrolyte containing the sulfuric acid, the persulfate, the sulfate and the cationic surface active agent, so that the porous activated carbon with large specific surface area, high electro-adsorption capacity and good conductivity can be prepared; when being used as a raw material for preparing a capacitive deionization electrode, the composite material shows good conductivity, high desalination capacity and high desalination rate, can be widely used for electro-adsorption desalination, and is high in use value and good in application prospect.

A positioning aid for welding copper core wires to the outer wall of a ring column is provided. A ring column positioning and fixing device is fixed on a base plate, and the ring column is positioned and fixed on the ring column positioning and fixing device. Positioning plates and guide support plates are fixed on the base plate on the left and right sides of the ring column positioning and fixing device, respectively. The copper core wire, supported on the guide support plate, contacts the outer wall of the ring column welding position, and the positioning of the copper core wire on the ring column is completed when the end of the copper core wire contacts the side wall of the positioning plate. This utility model adopts a welding positioning auxiliary structure consisting of a ring column positioning and fixing device for positioning and fixing the ring column, a guide support plate for positioning the height of the copper core wire, and a positioning plate for positioning the length of the copper core wire end extending beyond the ring column. This structure can quickly and accurately determine the relative position of the ring column and the copper core wire, eliminating the problem of welding quality and welding accuracy being affected by the shaking or displacement of the ring column and the copper core wire, improving weld quality, and ensuring welding quality stability.

The photovoltaic three-phase test system and the photovoltaic three-phase test method provided by the invention have the advantages that the operation is simple, reliable detection on three-phase grid-connected and off-grid control equipment can be realized, and the test efficiency is high; comprising a power supply detection module which is connected between a mains supply and a power grid leading-out terminal of a detected product and is configured to perform contact mechanical detection operation so as to realize switching of a power supply mode and a working mode of the detected product; the working mode comprises a grid-connected mode and an off-grid mode; the inversion detection display module is connected with the inversion leading-out end of the tested product and the power supply detection module, and is used for testing and displaying the inversion side of the tested product in a grid-connected mode; the load detection display module is connected with the load leading-out end of the tested product and the power supply detection module, and is used for testing and displaying the load side of the tested product in a grid-connected mode; and the off-grid detection module is connected with the load leading-out end of the tested product and the power supply detection module, and is used for testing and displaying the load side of the tested product in an off-grid mode.

The invention belongs to the field of aviation, and discloses a rotor aerodynamic configuration of a light tilting rotorcraft. The light tilting rotorcraft rotor comprises the steps of overall parameter selection, airfoil profile selection, blade torsion angle distribution, blade chord length distribution, blade pneumatic analysis and the like. The designed light tilting rotorcraft rotor has high aerodynamic efficiency, can meet the aerodynamic requirements of different flight states, can meet the task requirements in the vertical take-off and landing stage, the hovering stage and the forward flight stage, meets the performance requirements of the light tilting rotorcraft, and has high practical value.

The application discloses a kind of pathological image classification methods based on dyeing perception intelligent feature modeling, belong to pathological image classification field, this method includes collecting the multi-staining full section image group data of different objects;Multi-staining full section image group data includes H&E dyeing image and several immunohistochemical dyeing images;Each multi-staining full section image group data is respectively preprocessed, obtains the several equal-size image blocks of each object;Based on the image block of each object, graph is constructed, and the multi-modal heterogeneous pathology graph of each object is obtained;With the multi-modal heterogeneous pathology graph of each object as training data, train pathological image classification model;The pathological image classification model of training completion is used to classify the pathological image to be measured.The application solves the problems of the existing method in processing digital pathology graph data, such as node category characteristics, edge information utilization, cross-staining interaction and non-perfect data processing.

This application relates to a horizontal and vertical synchronous continuous bending mechanism, including a die base and a horizontal bending unit, a first vertical bending unit, and a second vertical bending unit connected synchronously. The die base is arranged along the left-right direction to carry the material strip. The horizontal bending unit is located at the rear of the die base for horizontally stamping and bending the workpiece. The first vertical bending unit is located at the rear of the die base after the horizontal bending unit for performing a first vertical stamping and bending on the workpiece. The second vertical bending unit is located at the rear of the die base after the first vertical bending unit for performing a second vertical stamping and bending on the workpiece. The bending mechanism provided by this application can pre-bend the workpiece blank horizontally, and then perform the first vertical bending and the second vertical bending in sequence to bend the workpiece into a fixed shape. This solves the deficiency of existing bending equipment that cannot bend the workpiece, and has high practical value.

This invention relates to a modular combined scrap steel and rebar solid waste crushing and processing device, belonging to the technical field of solid waste processing equipment. It includes a hydraulic base, a waste conveyor belt and a finished product conveyor belt installed at the front and rear ends of the hydraulic base, a processing frame detachably installed on a transmission plate at the center of the hydraulic base, and a slitting machine, a crusher, a first recycling tank, and a second recycling tank, modularly and detachably installed on the processing frame from top to bottom. A guide frame is installed at the output end of the waste conveyor belt. The guide frame is used for preliminary separation of long rebars and small pieces of scrap steel. In this invention, by installing the processing frame on the hydraulic base, the slitting machine installed on the processing frame cuts the rebars, and the crusher crushes the scrap steel. Simultaneously, the structural design of the guide frame on the waste conveyor belt achieves graded separation of mixed waste, allowing long rebars and small pieces of scrap steel to enter the slitting machine and crusher for targeted processing, respectively.

The application relates to the technical field of machining, and particularly discloses an axle hole grinding device, which comprises a machining platform, a rotating jig and a grinding mechanism; the rotating jig comprises a rotating platform arranged on the machining platform and an outer supporting clamping unit arranged on the rotating platform and used for fixing a workpiece to be machined from the outside; the grinding mechanism comprises a vertical seat arranged on the rear side of the machining platform and extending to the top of the rotating platform, a first lifting driving unit arranged on the vertical seat, an extension driving unit arranged on the first lifting driving unit, a second lifting driving unit and a third lifting driving unit arranged on the extension driving unit, a grinding machining unit arranged on the second lifting driving unit and used for grinding an axle hole of the workpiece to be machined, and an inner diameter detection unit arranged on the third lifting driving unit and used for detecting the axle hole grinding; based on the above structure, the grinding efficiency of the belt pulley is improved, the equipment investment of an enterprise is reduced, and the labor intensity of an operator is reduced.

The application discloses a kind of roll type reverse osmosis membrane and the compatible installation structure of disc tube type reverse osmosis membrane shell, including including membrane shell, upper pressure flange, lower pressure flange and center pull rod, and upper support sleeve, lower support sleeve, several membrane elements and center water production pipe being set in membrane shell 1 inside, the socket and flow channel in the inside of upper and lower support sleeve are used to connect the membrane element, under the premise of not reforming original DTRO membrane shell, sealing accessory, cleverly utilize the center pull rod compression structure of membrane shell itself, realize the tension sealing of roll type reverse osmosis membrane element and support sleeve, center water production pipe, solve the problem that two incompatible membrane elements cannot be used universally, avoid equipment idle, especially suitable for low concentration wastewater treatment or pilot experiment and other high cost-effective application scenarios.

In order to solve the technical problems that an existing blade tenon spraying protection tool is not suitable for tenon bottom face spraying and a blade base body is prone to being scratched, the utility model provides the aero-engine compressor blade tenon cold spraying protection device. The blade tenon protection device comprises the sliding check block and the adjustable check block which are used for protecting the long side wall and the short side wall of the blade tenon respectively, and the protection requirement for a non-spraying area when the bottom face of the blade tenon is sprayed can be met. Moreover, a sealing rubber strip is arranged on the contact surface of the sliding stop block and the long side wall of the blade tenon, and a sealing rubber strip is arranged on the contact surface of the adjustable stop block and the short side wall of the blade tenon, so that the clamping and protection effects can be achieved through the sealing rubber strips, and the risk that the blade tenon is scratched due to clamping is avoided.

The utility model provides an electric pigment stirring circuit which can uniformly stir pigment and is time-saving and labor-saving. Comprising a lithium battery power supply module connected with a lithium battery and used for supplying power to the lithium battery and the whole circuit; the driving module is connected with the stirring motor and is used for driving the stirring motor to operate; the lithium battery voltage detection module is connected with the lithium battery power supply module and is used for detecting the electric quantity of a lithium battery; the vibration strength control module is used for adjusting the vibration strength of the stirring motor; and the main control module is connected with the lithium battery power supply module, the driving module, the lithium battery voltage detection module and the vibration intensity control module, and is used for controlling the driving module to act and acquiring the electric quantity of the lithium battery according to a detection signal of the lithium battery voltage detection module.

The application discloses a kind of tray cooling cleaning systems, including cabinet, cabinet is arranged along the first direction, and the inside second direction side of cabinet is equipped with sprocket conveying line for moving tray together;Several water pipes, several water pipes are arranged along the first direction and set below sprocket conveying line for continuously spraying water to tray cooling;Nylon brush, nylon brush is rotationally arranged between two water pipes for cleaning tray;Water suction wheel, water suction wheel is rotationally arranged behind several water pipes for sucking water to tray;Several air knives, several air knives are arranged behind water suction wheel for air drying tray, the tray cooling cleaning system provided in the application can quickly spray water to tray cooling through several water pipes, and can automatically clean tray through nylon roller, in this way, not only subsequent process production can not be affected, but also can ensure the production quality of circuit board, compared with prior art, has higher use value.

This invention discloses an Al-Mn-Fe-Si alloy with both high strength and toughness and good workability, as well as its preparation method. This invention adds Er and Zr elements, utilizing their synergistic effect to induce the formation of fine and dispersed Al3(Zr,Er) phases within the alloy. These phases act as heterogeneous nucleation sites, refining the grain size and inhibiting recrystallization during subsequent processing. Furthermore, Er elements suppress Zr segregation, preventing coarsening of the precipitated phases. The synergistic effect of these two elements enhances the alloy's yield strength. By simultaneously controlling the content and ratio of impurity elements Fe and Si in addition to Er and Zr, the formation of spherical or blocky semi-coherent α-Al(Fe,Mn)Si phases is promoted, improving precipitation strengthening. The prepared alloy balances high strength and toughness with good workability, effectively addressing the current shortcomings in strength and plasticity of 3-series aluminum alloys.

This invention belongs to the field of functional textile materials and provides a cooling and antibacterial polyester fabric and its preparation method. The invention employs a melt-blended spinning design of a thermally conductive antibacterial core-shell masterbatch and a polyester matrix. The masterbatch uses a zinc oxide submicron rod-shaped inorganic core as its core, coated with a silane coupling layer and a quaternized copolyester shell. During fiber drafting, the one-dimensional zinc oxide rods are aligned axially, significantly improving the longitudinal thermal conductivity of the fiber and enhancing the instantaneous cooling sensation upon contact. Simultaneously, the quaternized copolyester shell exhibits good compatibility with the polyester matrix, constructing a dense, wash-resistant, and antibacterial network. This achieves synergistic optimization of high-strength, fine-denier spinnability with high-filler thermal conductivity, durable antibacterial properties after 50 machine washes with a soft and comfortable feel, and high functionalization efficiency with low migration safety. It resolves the technical contradictions in existing polyester fabrics regarding thermal conductivity and cooling sensation versus antibacterial durability, functionality versus safety, and processability versus comfort, and has broad application value in areas such as intimate apparel and bedding.

The application discloses a preparation method of high-purity carbon powder prepared by step-by-step pyrolysis of waste tires, comprising the following steps: S1, removing steel wires and fiber accessories from waste tires, crushing and screening to obtain 80-120 mesh tire rubber powder, placing the rubber powder in a vacuum drying box, drying for 2-4 hours to remove the surface adsorbed water and light volatile impurities of the rubber powder, and obtaining dry tire rubber powder, thus, the closed pressure control vacuum drying pretreatment process can isolate external water vapor and dust, eliminate secondary pollution of the material, efficiently remove the surface adsorbed water, residual oil and light volatile components of the rubber powder under constant temperature conditions, adopt a three-stage gradient series condensation process, separate heavy, medium and light oil gas components according to the boiling point difference of the oil gas components, effectively avoid the problems of incomplete oil gas condensation and component adhesion and mixing, and adopt a dilute hydrochloric acid pickling-weak alkali desulfurization-multiple pure water rinsing grading purification system, low-speed stirring in the desulfurization stage, and consideration of the desulfurization effect and the structural integrity of the carbon powder.

This utility model relates to the field of medical devices, specifically disclosing a breathing balloon squeezer, including a fixing frame, a squeezing clamp, a squeezing clamp drive structure, and a power device; the fixing frame includes a rotating shaft and two fixing clamps, which are respectively connected to both ends of the rotating shaft and can respectively clamp the neck of both ends of the breathing balloon; the squeezing clamp includes two clamping plates, each clamping plate including a clamping part, a sleeve, and a connecting part arranged sequentially and connected to each other, the sleeves of both clamping plates are fitted onto the rotating shaft, and the two clamping plates form an "X" shape; the squeezing clamp drive structure includes a cylinder and a reset structure, the cylinder is hinged to the connecting part of the two clamping plates, the cylinder can drive the connecting part of the two clamping plates to close, thereby driving the clamping part of the two clamping plates to close, and the reset structure can drive the connecting part of the two clamping plates to open, thereby driving the clamping part of the two clamping plates to open; the power device includes a foot-operated inflation device and a connecting pipe, the connecting pipe connecting the foot-operated inflation device and the cylinder.

This invention discloses an apparatus and method for preparing fresh Dendrobium officinale extract, belonging to the field of medicinal plant processing. It solves the problems of low extraction rate of active ingredients, loss of heat-sensitive components, short shelf life, high cost, and difficulty in industrialization in existing fresh Dendrobium officinale processing methods. The apparatus consists of a cutting machine, an automatic conveying system, a pure copper tank, a dedicated grinder, a plate centrifuge, a homogenizer, a DSI instantaneous sterilizer, and a Class 100 aseptic filling platform connected sequentially, adaptable to the entire fresh Dendrobium officinale processing flow. The method uses fresh stems of Dendrobium officinale (green-stemmed ironwood / Dendrobium huoshanense) as raw material. After pretreatment and 2-5mm slicing, the stems are ground with tap water boiled and cooled to 2-8℃ in a copper tank at a material-to-liquid ratio of 1:15-30 to break the cell walls. The mixture then undergoes solid-liquid separation, homogenization, DSI instantaneous sterilization, and aseptic filling to obtain the finished product. The total time from slicing to sterilization is ≤4 hours. This invention improves the retention and yield of active ingredients (95.5%), reduces overall costs by 21.95%, and the product has a shelf life of over 6 months at room temperature away from light. It has a bright green color, a strong gelatinous texture, and can be compounded or further processed, resulting in high market value.

The application relates to a driving type travel text stream switching and multi-view synchronization method, which comprises the following steps: a front end acquires user natural language input, semantic analysis and entity extraction are carried out by a multi-agent system, and structured travel data is generated; travel suggestions are generated in combination with user preferences and destination resources, are pushed to the front end in a streaming mode to form a to-be-confirmed travel document, and are verified and solidified after being confirmed by the user to obtain a formal travel document; the formal travel document is taken as a unified data source, contract documents and propaganda pictures are automatically generated through a template engine and a rendering tool, and access links are stored and acquired; the formal travel document is synchronized to multiple business systems, and is adaptively displayed on the front end according to permission control. The application realizes driving type generation and stream interaction of travel texts, ensures that multi-view data is homologous and automatically synchronized, and improves the intelligent level of travel planning, the data processing efficiency and the cross-system reuse ability.

The present application relates to a five-axis head RTCP parameter calibration and precision detection method based on a tool setting gauge, and relates to the technical field of machine tool five-axis head precision calibration and detection; including clamping a ball head detection rod, activating the tool setting gauge, executing a measurement and detection program at a set angle, calculating and updating RTCP related parameters, automatically calculating geometric precision and outputting results. The present application executes the prepared calibration algorithm, uses the ball head detection rod clamped on the spindle of the five-axis head and the tool setting gauge installed in the working area of the machine tool for calibration and detection, calculates the five-axis head RTCP parameters that need to be updated through the algorithm, tests the related rotary geometric precision of the five-axis head after the data is updated, and outputs a test report. The items that originally need to be tested manually are optimized for automatic testing, human errors and other disturbances are excluded, the efficiency is improved, the utilization value of the tool setting gauge is improved, and the cost of purchasing the corresponding 3D measurement probe for users with automatic calibration needs is saved.

The present application belongs to the technical field of lithium resource leaching, and relates to a method for preparing battery-grade lithium carbonate from low-grade lepidolite. The method comprises the following steps: raw material pretreatment, acid leaching reaction, membrane separation and purification, valuable metal separation and recovery, deep impurity removal and refinement, lithium precipitation and product forming. In the lithium extraction method, low-grade lepidolite, dilute hydrochloric acid and a catalyst are added into a specific plastic reaction kettle at a certain liquid-solid ratio for low-temperature and normal-pressure reaction, and then battery-grade lithium carbonate and other high-value-added products are obtained through subsequent solid-liquid separation, washing, membrane separation, byproduct separation and lithium precipitation processes. The method is energy-saving and environment-friendly, can improve the leaching rate of lithium and the comprehensive utilization rate of lepidolite, has high automation degree, low cost and is suitable for industrial production.

This invention provides a method for preparing phosphorus-doped lithium ferrite using waste lithium iron phosphate (LFP) electrode sheets and the resulting product, belonging to the field of materials synthesis technology. This method creatively recycles waste LFP electrode sheets in the form of phosphorus-doped lithium ferrite, greatly improving their utilization value. The method for synthesizing phosphorus-doped lithium ferrite using waste LFP electrode sheets has the following advantages: 1) This method requires no additional oxidant, is environmentally friendly, and solves the problem of difficult treatment of phosphorus-containing waste from the process; 2) Using waste LFP electrode sheets as raw materials not only reduces costs and yields high-value-added products, but also has high atom utilization, introduces no other impurities, and is pollution-free; 3) Phosphorus doping can improve the conductivity of lithium ferrite, reduce polarization, and improve structural and air stability.

This invention discloses a map storage method, system, and autonomous mobile robot for self-moving robots. Based on this method, when an autonomous mobile robot, such as a robotic vacuum cleaner, detects that it has completed a target area coverage task, it does not directly store a reused map. Instead, it first performs a map storage condition detection and determines whether the detection result meets preset storage conditions. Only when the detection result confirms that the preset storage conditions are met will the currently acquired map be saved as a reused map. This effectively improves the accuracy of the saved reused map, reduces map errors, and makes the saved reused map highly valuable.

The invention discloses an air pre-heater temperature control optimization method for thermal power generation, and belongs to the technical field of control optimization, and the method comprises the steps: constructing an air pre-heater inlet air temperature PID control system, obtaining an actual air temperature feedback value through an inlet air temperature monitoring module, and transmitting the actual air temperature feedback value to an inlet air temperature error calculation module; the inlet air temperature error calculation module receives the target temperature value and compares the target temperature with a feedback value so as to calculate and output a real-time error signal and transmit the real-time error signal to the inlet air temperature PID controller module, and the inlet air temperature PID controller module subjected to parameter optimization calculates a control quantity according to the real-time error signal; and the control quantity is output to the inlet air temperature adjusting module so as to adjust the inlet air temperature of the air pre-heater. The risk of corrosion and dust deposition of the low-temperature section of the air pre-heater can be effectively reduced, and the high use value is achieved for guaranteeing safe operation of a thermal power generation system and improving the fine operation level.

This invention proposes a culture medium and cultivation method for Tremella fuciformis, belonging to the field of Tremella fuciformis cultivation technology. It is prepared from the following raw materials in parts by weight: 0.5-1 parts antibacterial agent, 5-7 parts traditional Chinese medicine residue, 3-5 parts sugarcane bagasse, 2-3 parts fermentation extract, 30-40 parts cottonseed hulls, 7-10 parts wheat bran, 0.5-1 part gypsum, and 50-60 parts sterile water. The Tremella fuciformis culture medium obtained by this invention can significantly inhibit the growth of pathogenic bacteria during cultivation, reduce the pathogenicity rate, and increase the yield of Tremella fuciformis. Simultaneously, it increases the content and efficacy of active substances in Tremella fuciformis, producing selenium-enriched Tremella fuciformis polysaccharide. The active substances exhibit excellent antioxidant, anti-inflammatory, anti-tumor, moisturizing, hypoglycemic, hypolipidemic, and cardiovascular protective effects. Using this invention's culture medium, along with a suitable ratio of Tremella fuciformis and Clematis chinensis symbiotically, provides a new method and material for Tremella fuciformis cultivation, resulting in Tremella fuciformis with better utilization value and broad application prospects.

The application provides a computer vision defect detection system and method on an electric control board production line, and relates to the technical field of data processing.The method comprises the following steps: according to collected multi-angle images, combining illumination conditions and visual angle information, the overall area of the electric control board is partitioned; image block processing is performed to generate a plurality of image sub-areas, and texture features, brightness distribution features and geometric edge features are extracted in each image sub-area; rare defect feature enhancement processing is performed, low-frequency abnormal textures are repeatedly superimposed in multiple scales, and the edge fracture is directionally extended; the corresponding normal area combined features are compared and differenced, and normalized correction is performed in combination with the illumination conditions and the visual angle information; multi-angle recurrence degree analysis is performed, when the same suspected defect is detected under different angles, a reliable defect area is formed, otherwise, an interference area is removed, and an electric control board defect detection result is generated; and the application improves the accuracy of defect detection.

This invention provides a hot-dip galvanized steel sheet with high YR (glucose content), high ductility, elongation flange and bending properties, and improved shear workability, with a TS (strength) of 1180 MPa or higher. The base steel sheet has a specified composition and microstructure, particularly with an aspect ratio of 2.0 or less: the proportion of residual γ (glucose content) exceeds 50%, the number of hardness frequency groups of 0.25 or higher is 1, the area ratio of quenched martensite in the surface layer is 80% or less, the surface softening thickness is 10 μm to 100 μm, and the diffusible hydrogen content in the low-temperature region is 0.015 ppm by mass or less.

The present invention aims to provide a high-strength steel sheet having a TS of 980 MPa or more and excellent ductility, hole expandability, bendability, and hydrogen embrittlement bendability, and a method for manufacturing the same. A high-strength steel sheet having a prescribed composition, a steel structure in which ferrite is 1% or more and 40% or less in area ratio, fresh martensite is less than 1.0%, the sum of bainite and tempered martensite is 40% or more and 90% or less, retained austenite is 6% or more, a value obtained by dividing the average Mn amount (mass%) in the retained austenite by the average Mn amount (mass%) in the ferrite is 1.1 or more, and a value obtained by dividing the average C amount (mass%) in the retained austenite having a length-diameter ratio of 2.0 or more by the average C amount (mass%) in the ferrite is 3.0 or more, and the diffusible hydrogen amount in the steel is 0.3 mass ppm or less.