1448 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 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 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.

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 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 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 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.

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 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 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.

The invention discloses a preparation method of a TiAl alloy casting containing return scraps, the TiAl alloy return scraps used in the preparation method are casting sprues, patches and skull which are cut off in subsequent processing, and the preparation method comprises the following specific implementation steps: carrying out ultrasonic cleaning and surface treatment on the return scraps to remove a surface oxide layer; a new material with the target weight of 50% is used for smelting during primary smelting to obtain a primary ingot, a return material is placed below the turned primary ingot before secondary smelting, and then the primary ingot is smelted and poured into a preheated mold to form a casting, so that recycling of a TiAl alloy raw material is realized, the raw material cost is reduced by 50%, the preparation cost is reduced by 33%, and the production efficiency is improved. And the power consumption and the equipment loss are reduced, so that the purposes of energy conservation and emission reduction are achieved. The impurity element control of the cast ingot produced by the method is equivalent to that of alloy produced by conventional raw materials, and is convenient and fast compared with a preparation process by directly utilizing the raw materials. And the poured casting is uniform in component, compact in structure and high in purity.

The invention discloses a manufacturing process of an NO7718 nickel base alloy nut for nuclear equipment. The manufacturing process comprises the steps of material preparation, hot forging, shot blasting, solid solution heat treatment, physical and chemical detection, finish machining, precipitation hardening heat treatment and detection packaging. The hot forging near-net forming technology is adopted, the shape of the nut blank is directly obtained through plastic deformation, the cutting allowance of machining is greatly reduced, a large number of raw materials are prevented from becoming sweeps, the material utilization rate is remarkably increased, and the raw material cost is effectively reduced; by accurately controlling the initial forging temperature, the final forging temperature and the cooling speed of hot forging as well as subsequent solution treatment and precipitation hardening treatment, grains can be refined, and the precipitation form and distribution of a strengthening phase can be controlled, so that the microstructure of the material is optimized, and the material obtains more excellent comprehensive mechanical properties such as higher strength, plasticity and toughness cooperation; and the harsh working condition requirements of nuclear equipment can be better met. The process provided by the invention ensures the stability and consistency of product performance.

Disclosed is a Transparent Dental Alignment Device and a manufacturing method for the Transparent Dental Alignment Device. The disclosed manufacturing method for the Transparent Dental Alignment Device includes the steps: 3D printing the dental alignment device using a composition for forming transparent dental alignment devices as the raw material (S10); Removing uncured resin and liquid from the dental alignment device obtained in step S10 (S20); Post-curing the dental alignment device obtained in step S20 (S30); Post heat treatment of the dental alignment device obtained in step S30 (S40); Cleaning the dental alignment device obtained in step S40 (S50).

The application relates to the technical field of paint production, and particularly discloses a composite material modified wear-resistant anticorrosive paint and a preparation method thereof, which comprises the following steps: S1, raw material preparation, wherein high-performance resin, wear-resistant fillers, anticorrosive fillers and functional additives are weighed, the wear-resistant fillers are nano-aluminum oxide, silicon carbide and diamond micro powder, and the anticorrosive fillers are zinc powder, glass flake and mica powder; S2, the weighed raw materials are added into a dispersion grinding device, and are firstly stirred and mixed. The composite material modified wear-resistant anticorrosive paint and the preparation method thereof can improve the wear resistance and the anticorrosive performance of the paint by the wear-resistant fillers and the anticorrosive fillers, such as nano-aluminum oxide, silicon carbide and diamond micro powder, so that the hardness and the wear resistance of the paint are greatly improved, various abrasions can be effectively resisted, and the service life of the coated object is prolonged.

The invention discloses a production process of high-stiffness embossed aluminum foil composite paper. The production process comprises the following steps: (1) selecting and treating raw materials; (2) gluing treatment: uniformly coating the front surface of the lining paper with a modified adhesive by using a coating machine, wherein the modified adhesive comprises modified starch, water, konjac glucomannan, a polyamide curing agent, an accelerant, aluminum sulfate, an AKD emulsion and a defoaming agent; (3) aluminum foil compounding: the aluminum foil is unreeled and attached to the modified adhesive, and then extrusion compounding is performed through a compression roller; (4) embossing and forming: embossing the front surface of the aluminum foil of the aluminum foil composite paper by adopting a heating embossing roller; (5) curing treatment: coating a curing agent on the front surface of the aluminum foil of the aluminum foil composite paper by adopting a micro-concave net roller; and (6) cooling and rolling. The stiffness of the aluminum foil composite paper is effectively enhanced, the bonding capacity between the aluminum foil and the lining paper is enhanced, the smoothness of the surface of the aluminum foil composite paper is remarkably enhanced, the attractiveness is enhanced, and the wear resistance of the aluminum foil composite paper is enhanced.

The invention discloses a self-adaptive humidity adjusting carton printing device and a carton printing method thereof, belongs to the technical field of carton printing equipment and printing processes, and aims to solve the problems that the printing rejection rate is high, the labor cost is increased, and raw materials are wasted due to the fact that manual judgment and adjustment are needed, response lag exists, and the precision is low. According to the invention, full-breadth scanning is carried out through three or more groups of sensors, subarea compensation is triggered by + / -0.5% humidity difference, the problems of image-text set-off in a high-humidity area, ink layer falling off in a low-humidity area and paperboard embrittlement are avoided, and the full-breadth printing consistency deviation is less than or equal to 2%; and through a closed-loop correction mechanism, accurate landing of ink viscosity, roller pressure, drying temperature and paper feeding speed and the standard reaching rate of ink layer adhesive force are ensured, meanwhile, automatic elimination is conducted when the humidity is larger than 14% or smaller than 6%, production is recovered after reinspection is qualified, the situation that the paperboard exceeding the standard flows into the printing link is avoided, the printing quality is remarkably improved, and the defect rate is greatly reduced.

The invention relates to the technical field of coatings, and particularly discloses a low-temperature-resistant waterproof coating for an outer wall of a house building and a preparation process of the low-temperature-resistant waterproof coating. The water-based paint is prepared from the following raw materials in parts by mass: 200 to 250 parts of modified silicone acrylic emulsion, 75 to 125 parts of polyurethane-acrylate core-shell emulsion, 40 to 60 parts of polyether polyol modified nano filler, 15 to 25 parts of rubber nano powder, 10 to 20 parts of liquid polyisoprene, 22 to 34 parts of an auxiliary agent and 60 to 100 parts of a composite solvent. According to the low-temperature-resistant waterproof coating prepared by the invention, the elongation at break and the low-temperature bending resistance of a coating film are remarkably improved on the premise of keeping relatively good tensile strength and adhesive force.

The invention relates to the field of materials and processes for automobile parts, in particular to a homogenization evaluation method for hardenability of Ti-containing carburizing steel and application. According to different specifications and different looseness and segregation levels of the round steel, sampling regulation is carried out on the center part and the center part of the section of the Ti-containing carburizing steel round steel, and the hardenability and the hardenability bandwidth of the carburizing steel can be more truly reflected. When the hardness of the tail end hardenability sample is detected, two surfaces equidistant from the circle center of the section of the round steel are detected, a telecentric surface far away from the circle center of the section of the round steel and a proximal surface close to the circle center of the section of the round steel are detected, and compared with the current national standard, the detection result is more scientific and accurate. The method can be applied to almost all carburized steel bars with large component fluctuation, the uniformity is truly reflected, technicians can select raw materials with proper hardenability bandwidth to be applied to shaft gear parts with different size characteristics and using performance requirements, and the application prospect is very wide.

The invention relates to the technical field of automobile part manufacturing, and discloses an automobile swing arm production method which comprises the three steps of machining semi-finished product preparation, sizing material forming semi-finished product preparation and finished product assembling and warehousing. The machined semi-finished product is obtained through blank preparation, rough and finish machining, drilling and inspection; a sizing material forming semi-finished product is obtained through raw material screening, banburying, pre-forming, vulcanization forming, automatic trimming, AI automatic assembling, AI visual inspection and performance testing, AI assembling and visual inspection are in cooperative linkage, and assembling parameters are adjusted in real time according to the detection result; and finished product assembly and inspection are completed after the two semi-finished products are prepared in parallel. According to the invention, the problems of low positioning precision, poor detection efficiency and lack of cooperation in existing production are solved, the product qualification rate and the production efficiency are greatly improved, and the large-scale high-precision production requirement is met.

An additive manufacturing machine for depositing molten wire in successive layers on a printing support in a manufacturing chamber to manufacture a three-dimensional part, includes: a feed unit for a raw material, a processing unit arranged to change the state of the raw material into molten material, the processing unit being fixed, located outside the manufacturing chamber and including at least one screw extruder, a flexible heating tube designed to convey molten material at its processing temperature and viscosity from the fixed processing unit to a mobile deposition unit, a mobile deposition unit located in the manufacturing chamber and including at least one deposition nozzle designed to deposit the molten material in the form of a molten wire in successive layers on the printing support and along a predetermined trajectory until the part to be manufactured is obtained.

The invention relates to a preparation method of a high-hardness composite coating on a titanium alloy surface, which comprises the following steps: pretreating a titanium alloy base material to remove a surface oxide layer to obtain the treated titanium alloy base material; prepared high-entropy alloy powder is dried and evenly laid on the surface of the treated titanium alloy base material, and the titanium alloy base material with the powder laid is obtained; performing laser cladding treatment on the titanium alloy base material subjected to powder laying in a protective gas atmosphere to obtain a high-entropy alloy strengthened coating; the particle size of the powder is controlled to be 65-90 microns. The Al powder, the Co powder, the Ni powder, the Ti powder and the B powder with the purity higher than 99.5 wt% are selected as raw materials, the high-entropy alloy powder and the high-strength titanium alloy matrix are molten on the surface of the high-strength titanium alloy through a laser high-energy heat source, the metallurgical bonding effect is achieved, high-entropy phase strengthening is achieved, grains can be fine, and the hardness and abrasion resistance of a surface coating can be improved. The surface hardness of the coating prepared by laser cladding of the high-entropy alloy powder on the surface of the titanium alloy is not lower than 677 HV, and the wear resistance is not lower than 1.128 hmm.

The invention relates to the technical field of preparation of high-entropy ceramics, and discloses a method for preparing compact high-entropy carbide ceramics, Ti3AlC2, TiC, VC, NbC, TaC and Mo2C are mixed and charged, then sintering is carried out, and the high-entropy carbide ceramics TiVNbTaMoCx are obtained after sintering is completed. In Ti3AlC2, TiC, VC, NbC, TaC and Mo2C, the molar ratio of Ti element to V element to Nb element to Ta element to Mo element is 1: 1: 1: 1: 1. According to the method, the density of the high-entropy carbide ceramic is improved by adopting a simple method, the process is simple and convenient, the production period is short, the raw materials do not need to be subjected to complex pretreatment, the preparation energy consumption and cost are remarkably reduced, and a new way is provided for large-scale preparation of the high-performance high-entropy ceramic material.

The invention relates to the technical field of copper foil slitting, in particular to a slitting and winding device for ultrathin copper foil production and processing, which comprises a base plate, an unwinding support and a winding support, the unwinding support is fixedly arranged on one side of the base plate, an unwinding roller for loading copper foil is detachably mounted on the unwinding support, and the winding support is fixedly arranged on the base plate. An unwinding support is arranged on one side of the base plate, a first electric wheel is arranged on the unwinding support, the first electric wheel is in friction contact with the unwinding roller and achieves power transmission, a guide rail is fixedly arranged on the other side of the base plate, a winding support is arranged on the guide rail in a sliding mode, a hydraulic cylinder is fixedly installed on the base plate, and a piston rod of the hydraulic cylinder is connected with the winding support. The first section of copper foil is precisely pulled to the supporting table and is pressed and conveyed by the driving belt, it is ensured that effective slitting and winding can be conducted from the initial position, manual intervention is avoided, the slitting and winding efficiency is remarkably improved, a waste material section does not need to be reserved, raw material waste is reduced, and the material utilization rate is increased.

The invention relates to a manufacturing method of a light-weight heat-alloy-free automobile hub, which comprises the following steps of: firstly, preparing an alloy raw material, then smelting and casting, and casting a light alloy into a barrel shape by a gravity inclined casting method; then spinning the drum into the required wheel rim by using a spinning machine; machining is conducted after heat treatment is conducted, and a rim semi-finished product needed before wheel welding is formed; meanwhile, spokes in various shapes are cast through a vibration pressurizing casting method, and machining is carried out; the rim and the spoke are welded to form a hub blank through friction stir welding or inertia friction welding; and finally, through machining and surface treatment, the finished hub meeting the technical requirements is obtained, and the finished hub is packaged and warehoused. According to the light-weight heat-free alloy automobile hub, the fine grain casting spoke, the casting and spinning rim and the friction welding technology are adopted for producing the light-weight heat-free alloy automobile hub, the comprehensive performance of the hub is remarkably improved, light weight of the automobile hub is achieved, and the requirements of modern automobiles for light weight, strength and performance are met.