1755 results about "Manufactured material" patented technology

To provide a seat pad capable of appropriately integrally molding a flow path lid and a duct with a pad body while suppressing leakage of a foaming raw material and to provide a mold for the seat pad.SOLUTION: The seat pad includes a pad body having a recessed ventilation passage 14, a planar duct 30 forming an inner peripheral wall of the ventilation passage 14, and a planar flow passage lid 20 covering the ventilation passage 14. The duct 30 and the flow passage lid 20 are molded in a predetermined shape in advance, and are foam-molded integrally with the pad main body. The flow passage lid 20 is set on a back surface side forming surface 5a in an overlapped state, and has a lid bending part 24 bent to the sheet surface side so as to form a recess capable of receiving a bank part 5b projecting from the back surface side forming surface 5a in its peripheral edge part 23. The duct 30 has a seat surface part 34 extending along a region deviated from the ventilation passage 14. The seat surface part 34 is applied to the projecting tip of the lid bent part 24 so as to form a first gap S1 into which the foaming material flows to the flow passage lid 20.SELECTED DRAWING: Figure 12

The invention discloses a security camera lens production process dynamic multi-parameter process monitoring method, and relates to the technical field of multi-parameter process monitoring. The method comprises the following steps: collecting process parameters and waviness characteristic data; collecting optical characteristics and physical response data of security camera lens raw materials; discretizing the data, and generating raw material standard data according to material types and performance; collecting real-time polishing data, and calculating to obtain a polishing deviation factor vector; calculating a weight through an entropy weight method to obtain a polishing alarm correction index, giving an alarm and adjusting polishing parameters when the polishing alarm correction index exceeds a threshold value, and obtaining corrected geometric feature data; the method comprises the following steps: collecting data in a coating stage, obtaining coating material response and processing environment data through a two-dimensional feature extraction method, and respectively calculating a material response deviation index and a processing environment disturbance index; and combining the two indexes to obtain the comprehensive deviation index of the coating process. According to the comprehensive deviation index of the coating process, the production process of the security camera lens is monitored in real time.

The invention discloses a neodymium iron boron magnet with a protective film and a manufacturing method thereof, and the manufacturing method specifically comprises the following steps: S1, pretreating a plurality of raw materials to ensure the purity and cleanliness of the raw materials; s2, the pretreated materials are mixed in proportion and smelted to prepare uniform neodymium-iron-boron alloy; s3, the smelted alloy is crushed, and particle powder meeting the requirement is prepared through jet mill equipment; s4, the powder is put into a mold, forming orientation is conducted through a magnetic field press, and the maximum residual magnetism is obtained; s5, performing high-temperature sintering on the molded magnet to improve the density and the magnetic performance of the molded magnet; s6, the sintered magnet is machined, and the needed size and shape are obtained; s7, carrying out pretreatment on the surface of the magnet, and carrying out aftertreatment after chemical nickel plating to ensure the quality of a plating layer; according to the method, the surface of the neodymium-iron-boron magnet is coated with a high-phosphorus chemical nickel layer in a plating mode, the magnet can be effectively prevented from being corroded by the external environment, and the service life of the magnet is prolonged.

The utility model provides a pottery clay 3D printing device capable of mixing and conveying raw materials in a fixed proportion, which comprises a rack, a 3D printing device, a 3D printing device and a 3D printing device, wherein the rack comprises an accommodating chamber and a printing chamber which are arranged in an up-down structure; the raw material conveying mechanism comprises a plurality of conveying assemblies arranged above the rack, and the conveying assemblies are used for conveying different raw materials; the mixing and extruding mechanism comprises an extruding assembly which can be transversely and movably arranged in the containing cavity and communicates with the conveying assembly, the extruding assembly comprises a material mixing bin body, a mixing cavity is formed in the material mixing bin body and communicates with the raw material conveying assembly, a stirring assembly is arranged in the mixing cavity, and an extruding head is connected to the lower portion of the material mixing bin body; the printing platform is arranged in the printing cavity in a longitudinal sliding mode and used for bearing 3D printing products, raw materials are directly printed in a printer after being mixed, efficiency can be greatly improved, and the problem that ceramic clay materials are possibly poor in uniformity and stability due to long-term placement or in the transferring process can be solved.

The invention provides a discharging mechanism of laser cutting equipment, and belongs to the technical field of laser cutting equipment.The discharging mechanism comprises a cutting table, a vibration assembly and a cutting assembly, the vibration assembly and the cutting assembly are arranged on the cutting table, a discharging groove and a scrap groove are formed in the outer walls of the two sides of the cutting table respectively, and a sieve plate and a cleaning plate are installed on the inner wall of the cutting table respectively; a conveying assembly is installed on the cutting table and comprises a lug plate, a motor, a conveying wheel, a transmission belt and a nail plate. The conveying belt is matched with the nail plate to directly convey and discharge workpieces after cutting the workpieces, and meanwhile, the conveying belt is matched with the sieve plate and the cleaning plate to separately discharge and collect the workpieces and chippings generated in the cutting process; in this way, the situation that the overall quality is affected due to the fact that the surfaces of the workpieces are scratched by friction and collision in the follow-up transferring process due to mixed collection of the chippings and the workpieces is avoided, meanwhile, the follow-up chippings are separated and recycled in a centralized mode, the chippings can be reused through smelting in the follow-up process, and therefore the cost of raw materials is reduced.

The invention discloses a method for preparing spherical metal fine powder by using coarse / waste powder through ultrasonic atomization, which comprises the following steps of: (1) collecting coarse / waste powder raw materials for ultrasonic atomization powder preparation, (2) conveying the coarse / waste powder to an electric arc melting area through argon gas flow, and carrying out melting and ultrasonic atomization powder preparation processing; (3) in the powder preparation process, the powder is continuously collected by using argon circulating airflow, so that the continuity of the powder preparation process is ensured; and (4) finally screening the prepared powder in particle size ranges to obtain high-quality spherical fine powder in different particle size ranges. According to the method, the recycling and reusing problems of 3D printing splashing waste powder and coarse powder in the traditional gas atomization powder manufacturing process are solved, and the powder pollution risk is remarkably reduced; according to the ultrasonic atomization re-powdering technology, the high-quality spherical metal fine powder needed by additive manufacturing can be efficiently prepared, powder waste discharge and environmental burden are reduced, the obtained powder can be directly used as a high-quality raw material for additive manufacturing, and green and sustainable development of the metal additive manufacturing industry is promoted.

The invention relates to a titanium alloy component preparation method and device and a flow guide pipe radius confirmation method, and relates to the technical field of negative pressure suction casting. The titanium alloy component preparation method comprises the steps that raw materials are smelted in stages based on the preset smelting power P1 of the raw materials till the heating temperature reaches the preset pouring temperature T, carrying out heat preservation on the smelted raw materials; based on the smelting power P2 of the blocking piece, the blocking piece is smelted in a staged mode till the blocking piece is completely smelted within a preset time period; and negative pressure is applied to a mold, and negative pressure mold filling is conducted on the mold through the molten blocking piece material and the molten raw materials. By adopting the technical scheme, the technical problems of long mold filling time and serious heat loss existing in an existing casting mode of combining smelting and crucible tilting weighting can be solved.

The invention provides a continuous fiber 3D printing nozzle structure and a composite material product, and belongs to the technical field of continuous fiber 3D printing manufacturing device.The nozzle structure comprises a hollow columnar spray head, a rolling device and a shell, the rolling device is located at the front end of the hollow columnar spray head, and the shell surrounds the periphery of the hollow columnar spray head; a storage cavity for storing filler is formed by the inner wall of the shell and the outer side wall of the hollow columnar spray head; the rolling device comprises a regular polygon mounting frame and rolling blocks, each edge of the mounting frame serves as a mounting shaft, each mounting shaft is rotationally provided with the corresponding rolling block, raw materials extruded from the hollow columnar spray head pass through a space defined by the multiple rolling blocks, and the rolling blocks are compacted on the surface of the extruded wire in the moving process of the 3D printing nozzle; a filler conveying assembly is arranged on the bottom wall of the shell and used for conveying filler in the storage cavity to the outer surfaces of the rolling blocks. According to the invention, the risks of fuzzing and wire breaking in the printing process of the wires can be reduced.

The invention provides an open-type mutual inductor magnetic core cutting-molding cooperative intelligent control method and system, and relates to the technical field of intelligent manufacturing, and the method comprises the steps: collecting multi-dimensional feature data of a magnetic core raw material in real time through a multi-source sensing unit, including magnetic core surface topography point cloud data, magnetic conductivity, hardness parameters and internal defect distribution; based on the multi-dimensional feature data, a historical process library is matched through a transfer learning algorithm to generate a material compensation factor, and an initial cutting parameter final combination is calculated by using an improved particle swarm algorithm in combination with transformer specification parameters; cutting the magnetic core for the first time based on the final combination of the initial cutting parameters to obtain actual size data; based on actual size data, two points are selected on a cutting surface, space coordinates are determined through laser scanning data, and a reference straight line is generated. The machining precision, the production efficiency and the process reliability of the core part of the mutual inductor are improved through a full-process closed loop.

The invention discloses a preparation method of a high-capacity magnesium-based composite material based on MOF structure modification, and belongs to the technical field of hydrogen storage materials, the preparation method comprises the following steps: (1) preparing an M-MOF guest material; (2) modifying an aperture structure of the M-MOF guest material; and (3) preparing the MgH2 (at) S-M-MOF compound by a wet impregnation nano confinement method. Compared with a pure MgH2 hydrogen storage material, the MgH2 (at) S-M-MOF compound magnesium-based hydrogen storage material prepared by the nano confinement method has the advantages that the hydrogen absorption and desorption reaction temperature is obviously reduced, and the dynamics is greatly improved; compared with a traditional nano confinement hydrogen storage material preparation process, the preparation method has the advantages that the comprehensive hydrogen storage performance of a compound is enhanced by modifying a pore structure and introducing catalytic elements, the operability is high, the effective loading rate is high, the preparation period is short, and the yield is high; the required raw materials are cheap and easy to obtain, and the preparation process is low in cost, high in safety and suitable for industrial production and popularization.

A silicon rod manufacturing method, comprising: S1, cutting a round rod (100) in a first direction to obtain a first rough square rod (1) and a plurality of offcut blocks (2), the first direction being the axial direction of the round rod (100); S2, cutting each of the offcut blocks (2) in the first direction to obtain second rough square rods (21); S3, grinding the second rough square rods (21), and bonding and stacking the plurality of ground second rough square rods (21) in a second direction to obtain a second square rod (3), the second direction being orthogonal to the first direction; and S4, cutting the second square rod (3) in the second direction to obtain a plurality of second silicon rods (31). The method saves raw materials, and increases the utilization rate of the round rod (100), thereby improving the production efficiency of finished square rods, and reducing the production cost. The present invention also relates to a silicon rod and a photovoltaic silicon wafer.

The invention discloses a double-phase high-entropy ceramic and a carbon heat-assisted electric arc melting preparation method thereof, and belongs to the technical field of preparation of high-entropy carbide ceramic powder. The compact double-phase high-entropy ceramic is synthesized in one step through a carbon thermal reduction-electric arc melting integrated process, metal oxide powder, carbon powder and B4C powder serve as raw materials, and the double-phase high-entropy ceramic is prepared by performing carbon thermal reduction on the metal oxide powder in an inert atmosphere through an electric arc melting method. By means of the preparation method, the problems that multi-step synthesis is complex, component segregation is difficult to control, impurity phases are easy to introduce, large-scale production is limited and the like in a double-phase high-entropy ceramic preparation technology are solved. The double-phase high-entropy ceramic prepared by the method disclosed by the invention is high in purity and can be prepared on a large scale.

The invention discloses a molten drop arc-laser induced additive and subtractive integrated manufacturing system and method. The method comprises the steps that raw materials are heated through one or more energy sources to form molten drops; multiple kinds of energy are synchronously applied to molten drops to form a composite molten pool, in-situ coupling of additive and subtractive materials is achieved, and material removal is conducted on a cladding layer while material adding is conducted in the composite molten pool; dynamically adjusting the energy ratio and spatial-temporal distribution of each energy field, and optimizing the droplet transition and metallurgical quality; when the temperature of the cladding layer is reduced to a solid-liquid mixing interval or a thermoplastic deformation interval, shaping and surface processing are carried out, and the ideal component shape and surface smoothness are achieved; energy field parameters are dynamically adjusted based on real-time feedback of multi-sensor data, residual stress is inhibited in combination with a heating compensation technology, the heating compensation technology is used for effectively controlling heat input and stress release, and it is ensured that the stress state of a component in the manufacturing process is effectively managed.

The invention relates to the technical field of thermal barrier coatings for gas turbines or aero-engines, and particularly discloses an ultra-thick and strong-bonding double-ceramic-layer thermal barrier coating and a preparation method thereof.The thermal barrier coating is composed of an MCrAlY bonding layer, a YSZ ceramic layer bottom layer and a high-entropy rare earth zirconate ceramic layer surface layer; the MCrAlY bonding layer is prepared through atmospheric plasma or hypersonic flame spraying, YSZ and high-entropy rare earth zirconate spherical powder serve as spraying raw materials, and the thermal barrier coating is prepared through an axial powder feeding high-energy plasma spraying system. The thermal barrier coating has the characteristics of super thickness (the coating thickness is 600-1200 microns), high bonding strength (gt; 19 MPa) and the like.

The invention belongs to the technical field of elastic element manufacturing, and relates to a special-shaped plate spring and a manufacturing process thereof, in particular to a manufacturing process of a spring used in an ultrahigh vacuum environment. The process comprises the following steps: selecting a 07Cr17Ni7Al plate as a raw material; performing laser melting cutting blanking according to the shape and the size of the special-shaped plate spring plate blank; carrying out solution treatment on the blanked plate blank; carrying out punch forming and bending forming; the formed semi-finished product is subjected to aging treatment; and cleaning the surface after polishing. The manufactured special-shaped plate spring is reliable in work, good in temperature resistance, long in service life and capable of being used in an ultrahigh vacuum environment, the temperature resistance of the special-shaped plate spring can reach 250 DEG C, and the service life of the special-shaped plate spring is 600000 times or above.

The invention discloses an efficient automatic paper box production system and a manufacturing method thereof. The manufacturing method comprises the steps that an automatic detection system comprehensively recognizes raw materials, checks thickness, humidity and texture parameters, adjusts production line parameters according to detection results and isolates unqualified materials; the production line automatically switches process configuration according to orders, cutting, folding and bonding parameters are adjusted, and a mechanical arm accurately adjusts a folding path; the system monitors the production link in real time, automatically optimizes and adjusts the production line, and corrects the folding precision deviation; in the quality detection link, the appearance, size and printing defects of the paper box are detected through image recognition, and unqualified products are automatically shunted; the production data is uploaded to the big data module in real time, and fault early warning and production strategy adjustment are carried out; according to the efficient automatic paper box production system and the manufacturing method thereof, intelligent control, flexible production switching and automatic quality detection technologies are integrated, existing defects are overcome, the production efficiency is improved, the fault rate is reduced, and the adaptability and flexibility of the system are enhanced.

The invention discloses an injection mold for multicolor injection molding and a production process thereof, a set of machine vision on-line inspection system with pattern detection and surface flatness detection is integrated, pattern detection is performed on a specific part of a formed part A through optical screen detection, horizontal and vertical coordinates of an actual contour are compared with a preset range, and the pattern of the specific part A is detected. Then, the surface flatness of the part is objectively evaluated by analyzing reflected light distribution on the surface of the part, whether a qualified matrix is provided for second injection or not is judged, and key quality attribute judgment on the intermediate product A before second injection is achieved; according to the method, the waste of raw materials, energy and working hours caused by the fact that known waste products continue to be subjected to second injection is effectively prevented, meanwhile, the position precision and visual definition of final multi-color products at the joints of different colors are guaranteed, the defects of boundary line distortion, blooming and the like are overcome, and the production yield and the resource utilization rate are remarkably increased.

The invention relates to a high-efficiency heat dissipation circuit board and a manufacturing method thereof, and the manufacturing method comprises the steps: constructing a raw material performance database through the structural collection and evaluation of the physical parameters of a high-thermal-conductivity nanofiller and a resin matrix, and guiding the nanofiller to adaptively migrate and locate along the gradient through the adjustment of the partition solvent evaporation rate and the interfacial tension gradient. And an efficient heat-conducting filler network with orderly partitions is formed. Furthermore, in-situ multi-mode detection and automatic feedback optimization are combined, the dispersion uniformity of the filler and the continuity of a heat conduction channel are guaranteed, and the circuit board with uniform heat dissipation performance is prepared through a medium-low temperature step-by-step curing latch structure.

The invention relates to a forging method of an aluminum alloy rectangular-ambulatory-plane frame, which comprises the following steps: selecting a cast ingot or a bar billet as a raw material, performing three-way upsetting and pulling modification to prepare a square transition billet with a square plate and a concave step, and positioning the concave step between the two ends of the square plate in the length direction; a flat anvil is used for conducting multi-pass forging on the inwards-concave steps, the two ends of the square plate are widened to the matched size after each pass of forging is completed, the square transition blank is flattened to form a square plate blank, and inwards-concave grooves are formed in the center positions of the plate faces of the two sides of the square plate blank; a pre-forging die is used for pre-forging the square plate blank, so that the square plate blank is shaped into a frame type pre-forged piece with a wad in the center; and a finish forging die is used for conducting finish forging on the frame type pre-forged piece, so that the frame type pre-forged piece is forged into a frame finish forged piece shaped like a Chinese character'hui '. According to the method, concave grooves are formed in the center positions of the two side plate surfaces of the square plate blank during pre-forging, so that the square plate blank can be formed into a hollow-square-shaped frame final forging piece only through one-time pre-forging shaping and final forging.

The clay 3D printer comprises a water supply mechanism, when water needs to be supplied to an extrusion mechanism, a first one-way valve is opened, a piston rod moves in the direction away from a conduction valve, water in a water supply bin flows into a water injection cavity, then the first one-way valve is closed, a second one-way valve is opened, and the water outlet amount is controlled. A piston rod moves in the direction close to a communicating valve, so that water in a water injection cavity flows into a water outlet pipeline through a water outlet channel, a clay raw material in an extrusion assembly and the water are mixed and stirred to form a clay material for 3D printing, and water can be conveniently supplied to the extrusion assembly; and the water storage amount in the water injection cavity each time is controlled through the driving air cylinder with the adjustable stroke, so that the quality of the clay 3D printing product is more stable.

The invention relates to a semiconductor device manufacturing technology, and aims to provide a preparation method of refined coke powder and high-purity isostatic pressing graphite. The method comprises the following steps: by taking calcined petroleum coke or calcined pitch coke as a raw material, crushing and grinding to obtain primary coke powder, then carrying out high-temperature halogen impurity removal treatment in a continuous heating manner, and introducing Freon gas in the process; cooling to obtain impurity-removed coke powder; and carrying out dispersion, grinding, shaping treatment, airflow classification and magnetic separation to obtain refined coke powder. According to the method, the impurity content is greatly reduced from the raw material end, the situation that a large number of metal impurities generated during smashing and grinding treatment cannot be eliminated in the graphitization process due to the fact that the metal impurities are located below the surface layer of a blank can be avoided, and the internal impurity content of a final graphite product is smaller than 20 ppm; higher tap density can be obtained, and a better mixing and kneading effect is realized; the porosity of an isostatic pressing graphite product can be reduced, the microstructure of a graphite material is effectively improved, and the corrosion resistance of the graphite material is effectively improved.

The invention relates to the technical field of intelligent manufacturing and digital twinning, and discloses an embossed plate production line virtual debugging system based on digital twinning. The system comprises a raw material data acquisition module, a digital twin construction module, an initial virtual debugging module, a physical world trial production module, a production quality analysis module, a deviation analysis module, a compensation adjustment module and a system self-optimization module. The main debugging and optimization work is completed in the virtual space, and a large amount of raw materials, energy and machine hours are saved; a system error between a theoretical model and physical reality can be effectively counteracted through the established compensation mapping model F; the period from product design to stable production is greatly shortened through virtual debugging; the compensation model can be updated online, so that the whole system is always kept near the optimal production state; data and models generated in the debugging and optimizing process are converted into core knowledge assets of an enterprise, and digital inheritance of knowledge is achieved.

A CNC automatic feeding mechanism and continuous machining device for a medical product, and a machining method. A CNC automatic feeding mechanism (10) comprises a material container (11), a material distributing apparatus (12), and a material pushing apparatus (13). The material distributing apparatus (12) conveys bars in the material container (11) to the material pushing apparatus (13) one by one, and then an ejector pin (132) pushes the bars to a machining assembly (20), thereby achieving automatic feeding of the bars. A spring (133) is provided in the material pushing apparatus (13), preventing the machining assembly from being damaged due to different lengths of the bars. In a continuous machining device (100), a machining spindle (26) performs a machining operation on the bars, and finished products after completion of machining are collected by a finished product collecting assembly (40). A material pulling assembly (30) pulls out, by a predetermined length, a bar clamped in a second rotating shaft module (25), and the machining assembly (20) continues to perform a machining operation until the machining of the whole bar is completed. In a continuous machining method for a bar, the bar does not need to be cut into blanks, increasing the utilization rate of the bar, avoiding waste of raw materials, achieving continuous machining in a single setup, improving the machining precision and the production efficiency of products, and reducing a manual operation, thus improving the production efficiency and the operation safety.

The utility model relates to the technical field of UTG glass cutting, and discloses a UTG glass raw material production cold section cutting production line, which comprises a transverse cutting conveying mechanism, a transverse cutting mechanism, a transverse cutting mechanism and a transverse cutting mechanism, the longitudinal cutting mechanism is used for longitudinally cutting according to requirements; the splitting mechanism is arranged on the right side of the transverse cutting and conveying mechanism and used for separating the cut UTG glass; the cracked ear material conveying mechanism is arranged on the right side of the splitting mechanism and is used for separating ear materials from the cut glass and conveying finished products away; the transverse cutting conveying mechanism comprises a first rack, and a plurality of first sliding rails are arranged at the top of the first rack at equal intervals. According to the utility model, through the transverse follow-up cutting, the longitudinal high-precision cutting and split piece separation, the dust collection assembly and the automatic variable-width conveying technology, the cutting efficiency and precision are improved, the split piece separation smoothness, the dust treatment capacity and the offcut recovery capacity are optimized, and the problems of low efficiency, poor precision, serious pollution and incomplete offcut treatment in the prior art are solved.

The invention relates to the technical field of packaging materials, in particular to a PE composite film for manufacturing a packaging bag and a preparation method of the PE composite film. The PE composite film comprises a lower antibacterial PE layer, a middle barrier PE layer and an upper antibacterial PE layer; the lower antibacterial PE layer is prepared from the following raw materials: low-density polyethylene, linear density polyethylene, an antibacterial functional agent, a tensile functional agent and an auxiliary agent; the middle barrier PE layer is prepared from the following raw materials: linear low-density polyethylene, metallocene low-density polyethylene, a tensile functional agent and an auxiliary agent; the upper antibacterial PE layer is prepared from the following raw materials: linear low-density polyethylene, metallocene low-density polyethylene, an antibacterial functional agent and an auxiliary agent, and the PE composite film for manufacturing the packaging bag, prepared by the invention, has excellent antibacterial property and excellent tensile mechanical property; the requirements on antibacterial property and tensile property in the field of packaging materials can be met.

The invention provides a three-dimensional aluminum corrugated core composite board and a forming process thereof, belongs to the technical field of aluminum composite board production, and solves the technical problems that an existing aluminum composite board is low in heat dissipation efficiency and poor in heat insulation effect, and forming equipment is low in automation degree. The three-dimensional aluminum corrugated core composite plate comprises a wood paint decorative layer, an aluminum panel, an aluminum corrugated core and an aluminum back plate which are sequentially arranged from top to bottom, the aluminum panel and the aluminum back plate are respectively bonded with the aluminum corrugated core, and the structures of the aluminum panel and the aluminum back plate are the same. The forming process comprises the following steps: pretreating and inputting raw materials; double-sided gluing; carrying out double-sided bonding; straightening and painting; and drying and outputting. The aluminum composite plate is produced through stable input, clamping and carrying, double-sided gluing, plate carrying and double-sided bonding, straightening and painting, drying and shaping, output and the like. The produced aluminum composite plate is stable in structural strength, high in heat dissipation efficiency and better in heat insulation effect, and the forming process is good in bonding effect and high in automation degree.

The invention discloses a soft magnetic composite material, a soft magnetic core ring and a preparation method and application thereof. The preparation method of the soft magnetic composite material comprises the following steps: 1) providing raw materials according to the chemical composition of the soft magnetic material; the raw materials are smelted and rapidly hardened, and soft magnetic material master alloy is obtained; the chemical composition of the soft magnetic material is RE2 (FexCo1-x) 14B, and RE is selected from at least one of La, Ce, Pr, Nd, Sm, Eu and Gd; x is the atomic ratio of Fe, 0.7 < = x < = 1; 2) heating the soft magnetic material mother alloy in vacuum to obtain a soft magnetic material phase alloy; (3) the soft magnetic material phase alloy is prepared into powder with the particle size of 75-200 microns, and soft magnetic material powder is obtained; 4) mixing the soft magnetic material powder with an amino compound to obtain mixed powder; and heating the mixed powder under the conditions of protective gas and 300-600 DEG C to prepare the soft magnetic composite material. The prepared soft magnetic composite material is high in effective magnetic conductivity and low in unit volume power loss.

The invention discloses a production process of an energy-saving and environment-friendly food packaging bag. The production process is realized through the following steps: S1, pretreatment of raw materials: carrying out physical activation treatment on a bio-based composite material; s2, multi-layer co-extrusion film blowing: precisely controlling the extrusion temperature in stages by adopting a gradient temperature control film blowing technology; s3, water-based ink printing, wherein water-based UV ink is used for flexographic printing; s4, ozone-ultraviolet synergetic sterilization: after the packaging bag is formed, the packaging bag enters a closed sterilization cabin to be sterilized; s5, slitting and forming: slitting the film into a customized size by adopting a laser slitting machine in a layered cutting mode, enhancing the interface bonding force through a bio-based composite material pre-activation technology, and reducing the use of an adhesive; the temperature of the three-layer structure is accurately regulated and controlled by adopting a gradient temperature control film blowing process, so that uniform compounding is realized; ozone permeation and ultraviolet photolysis are combined to realize synergistic sterilization, so that secondary pollution is avoided; and a biological enzymolysis recovery system is established to convert the waste into a PLA raw material, so that closed-loop production is formed.

The invention relates to a flame-retardant PC resin composition meeting a thin-wall S.2 needle flame standard as well as a preparation method and application thereof. The flame-retardant PC resin composition comprises the following components in parts by weight: 92-98 parts of PC resin, 0.1-1 part of a sulfonate flame retardant, 0.1-1 part of a toughening agent, 1-3 parts of phosphate, 0.5-2 parts of a boron-containing compound, 0.5-2 parts of fumed silica and 0.5-1 part of an auxiliary agent. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixer, conveying, shearing and mixing by a double-screw extruder through screws, and melting, homogenizing, drawing, cooling and pelletizing the materials to obtain the flame-retardant PC resin composition meeting the thin-wall S.2 needle flame standard. Compared with the prior art, the composite material not only has stable flame retardant property, meets the thin-wall S.2 needle flame standard, but also has relatively excellent mechanical property and thermal stability, is relatively low in cost, and is very suitable for being applied to the fields of power adapters, OAs, new energy batteries, electronics and electrics, electric control boxes, switches and the like.

The invention discloses a forging and rolling combined method for preparing a large-specification super-long titanium alloy thick plate, which comprises the following steps of: S1, reversely deducing the size of a plate blank and the total amount of required raw materials according to the geometric size and working allowance of a target forged plate, designing the weight of a single cast ingot, mixing the raw materials and pressing into an electrode block, a titanium alloy cast ingot is smelted and prepared by adopting a three-time vacuum consumable electric arc smelting process; s2, after a high-temperature anti-oxidation coating is sprayed to the titanium alloy cast ingot, multi-heating-number forging is carried out, the multi-heating-number forging comprises high-temperature cogging forging, single-phase region forging and plate blank forming forging, and a rectangular plate blank is manufactured; s3, the plate blank is heated and subjected to two-phase region one-fire rolling, and a semi-finished thick plate is prepared; s4, after cracks and surface defects of the semi-finished thick plate are removed, the semi-finished thick plate is heated and subjected to two-phase region rolling, and a finished thick plate is manufactured; and S5, the super-long thick plate is sequentially subjected to annealing and surface treatment, and the finished plate is obtained. The method has the advantages that the traditional size limitation is broken through, the forming efficiency is improved, and the structure uniformity and the material performance of the large-specification forged plate are improved.