5675 results about "Metal powder" patented technology

The invention relates to the technical field of powder metallurgy forming, and discloses a compressor valve plate forming device for powder metallurgy and a forming method thereof.The forming device comprises a lower die body, a guide support is fixed to the lower die body, an upper die body is slidably connected to the guide support, and a servo hydraulic cylinder is fixed to the top of the guide support; a servo hydraulic cylinder is arranged on the lower die body, the telescopic end of the servo hydraulic cylinder is fixedly connected with the upper die body, a forming groove is formed in the lower die body, a forming head is arranged on the upper die body, a feeding box is arranged on the lower die body, and a push rod assembly used for adjusting the working position of the feeding box is fixed to one end of the lower die body. The metal powder can be uniformly distributed in the forming groove, so that the thickness of a formed workpiece is uniform, a lubricant can be conveniently and quantitatively sprayed into the metal powder, the flowing property of the metal powder is improved, and the machining quality of the workpiece is improved.

The invention relates to the field of metal powder forming, in particular to a metal powder forming device for gear production. According to existing equipment, dead corners of a die are difficult to fill with metal powder, the phenomenon that the metal powder on the inner surface layer of the die is virtually full is easily caused, then the strength of a pressed and formed gear is uneven, and the quality of the pressed and formed gear is affected. A metal powder forming device for gear production comprises a base. The fixing frame is fixedly connected to the base. Due to the fact that the moving wall moves upwards, the space between the moving wall and the mold is enlarged, and the space between the moving wall and the mold can be completely filled with excessive metal powder. And when the vibrator is started, the metal powder can be directly vibrated, so that dead corners between the moving wall and the mold are uniformly filled with the metal powder, the strength of the pressed and formed gear is uniform, and the quality of the pressed and formed gear is improved.

The invention relates to the technical field of image data processing, and discloses a fine metal powder defect detection method and system based on image recognition, and the method comprises the steps: illuminating a metal powder region through a non-polarized light source, and collecting two images in an orthogonal polarization state through imaging equipment with a linear polarizer, according to the method, the defect morphological fingerprints are constructed through the polarization information entropy, the three-dimensional structure information is converted into light field order degree change for detection, the dimension limitation of traditional two-dimensional imaging is broken through, and the detection accuracy is improved. Hidden defects such as internal pores and aggregates can be accurately identified, and meanwhile, stable detection and material defect cross discrimination under a dynamic working condition are realized in combination with motion compensation and multiband entropy ratio verification.

The invention belongs to the technical field of metal powder preparation, and discloses a method for preparing silver powder through reduction of hydrazine hydrate with the adjustable particle size. The preparation method comprises the following steps that a first dispersing agent is dissolved in deionized water, a silver-ammonia solution and a hydrazine hydrate solution are sequentially added, stirring reaction is conducted, and nano-silver seed crystal sol is obtained; uniformly mixing the obtained nano-silver seed crystal sol with a hydrazine hydrate solution and a second dispersing agent to obtain a reducing base solution; adding a surface modifier into absolute ethyl alcohol, and uniformly dissolving to obtain a surface modification coating solution; preparing a silver-ammonia solution, adding the prepared silver-ammonia solution into the reducing base solution, then adding the surface modification coating solution, and stirring for reaction to obtain silver powder slurry liquid; and after solid-liquid separation, a solid phase is taken, washed and dried, and silver powder is obtained. The preparation method is simple in process, the particle size of the silver powder can be adjusted through the adding amount of the seed crystal, and the prepared silver powder particles are uniform in particle size distribution, high in dispersity and suitable for the fields of conductive silver paste, electronic packaging and the like.

The invention relates to the technical field of rocket engine thrust chamber additive manufacturing, and discloses a metal powder recovery system for rocket engine thrust chamber additive manufacturing. Comprising a powder collection module, a screening classification module, a purification treatment module, a particle size adjustment module and an intelligent control module. The powder collecting module captures residual metal powder and collects data to generate a data set; the screening and grading module performs particle size separation by using a joint algorithm; the purification treatment module is used for constructing a multi-stage purification model to remove an oxide layer and decompose organic matters; the particle size adjustment module designs a composite regulation strategy to adjust particle size distribution; and the intelligent control module establishes an optimization model to generate a parameter adjustment instruction. In addition, the system is further provided with a powder characteristic analysis module, a circulation monitoring module and an exception handling module. The system can efficiently recover the metal powder, improve the quality and reutilization value of the metal powder, reduce the cost and guarantee the quality of additive manufacturing products, and is suitable for metal powder recovery treatment in the field of additive manufacturing of rocket engine thrust chambers.

The invention discloses an intelligent management system based on metal powder production, and relates to the technical field of industrial automation intelligent management. Sensor arrays are deployed in an ultrasonic atomizer and a vacuum drying furnace, the dust concentration, the vibration frequency, the pressure, the humidity, the temperature and the oxygen concentration are measured in real time, and the current stage is obtained through a production plan; dynamically and finely adjusting the weight matrix according to the sensor parameters corresponding to different stages, generating a weighted comprehensive index, calculating theoretical control parameters based on a physical model, correcting the theoretical control parameters through an LSTM neural network in combination with real-time environmental data, outputting an equipment control instruction, and extracting the sphericity and the moisture residue of the metal powder after the production of the metal powder is completed, so as to obtain the spherical degree of the metal powder. And the production quality is judged, and different responses are adopted according to the judgment result. The multi-parameter cooperative control precision is further improved, and the system stability is enhanced.

The invention belongs to the field of metal powder hot isostatic pressing and additive manufacturing near-net forming, and discloses a hot isostatic pressing forming method for preparing a substrate for additive manufacturing by mixing SS-PREP and EIGA Ti6Al4V ELI spherical powder, which comprises the following steps of: 1, mixing Ti6Al4V ELI powder prepared by SS-PREP and Ti6Al4V ELI powder prepared by EIGA according to a proportion under atmosphere protection; 2, in vacuum vibration powder loading equipment, the mixed powder is loaded into a steel sheath, and degassing seal welding is carried out; step 3, placing the seal-welded sheath in hot isostatic pressing equipment, carrying out heat preservation and pressure maintaining sintering forming, and then carrying out gradient cooling; and 4, after cooling, the steel sheath is removed through machining, and the large-size substrate for additive manufacturing is obtained. The prepared substrate has excellent comprehensive mechanical properties which are higher than the level of traditional forgings, and the application requirements of additive manufacturing are met.

The invention discloses a laser electron beam composite additive manufacturing method and system, and relates to the field of laser directional energy deposition, an electron beam is used as a heat source to melt metal powder, and a molten pool is formed on the surface of a substrate; three indexes including the temperature, the form and depth and the surface defect of the molten pool are obtained in real time, and when the three indexes meet preset conditions at the same time, laser serves as a main heat source, electron beams serve as an auxiliary heat source, and the metal powder continues to be molten till deposition is formed; in the cooperative working process of the laser and the electron beam, an energy distribution diagram is constructed based on multiple pieces of detection data, and temperature and form distribution of a molten pool are obtained; laser parameters and electron beam power parameters are adjusted in real time based on the temperature and form changes of the molten pool; the preset conditions are that the average temperature of the molten pool reaches a set stable temperature interval, the surface fluctuation of the molten pool is reduced to a set standard range, and the defect occurrence rate is lower than a set threshold value. The deposition precision can be improved, the thermal stress influence can be reduced, defects can be reduced, and efficient energy utilization is achieved.

The invention discloses a formula, a coating and a method of a dual in-situ precipitation reinforced FeCoNiCr-based high-entropy alloy composite material with a low corrosion-wear synergistic effect. The Al-Co-Cr alloy material comprises the following components in atomic percent: 15 to 30 at% of Al, 10 to 25 at% of Co, 10 to 25 at% of Cr, 10 to 25 at% of Fe, 10 to 25 at% of Ni, 20 to 35 at% of Ti and 5 to 15 at% of C, the preparation method comprises the following steps: filling all metal powder and graphene powder into a ball-milling tank, adding grinding balls, filling argon, sealing, and ball-milling, so as to obtain mixed powder in which the surfaces of metal powder particles are uniformly coated with graphene. The high-entropy alloy composite material with high hardness, high wear resistance and high corrosion resistance is obtained by utilizing the solid solution strengthening effect and the multiple in-situ precipitation strengthening effect of micron-scale TiC and nano-scale precipitation B2. The prepared coating is uniform and compact in structure, is metallurgically bonded with a base material, and has excellent corrosion and friction resistance and low corrosion-wear synergistic effect.

The invention relates to the technical field of image data processing, and discloses a method for detecting impurities in metal powder based on image recognition, which comprises the following steps of: irradiating the metal powder by using polarized light, synchronously acquiring an orthogonal polarization component image of the reflected light, and realizing impurity detection by calculating a differential image. Qualified powder spontaneously forms a uniform dark field in a differential image by utilizing the essential difference of response of metal powder and impurities to polarized light, and the impurities generate remarkable signals due to optical anisotropy, so that the detection blind area of the traditional method on the microscopic impurities is broken through, the method further performs time sequence analysis by multiplexing total luminous flux data, and the detection accuracy is improved. Synchronous identification of impurity morphological characteristics is realized, component and morphological two-dimensional detection capability is formed, the system realizes adaptive threshold adjustment based on statistical characteristics of differential images, and long-term operation stability is ensured.

The invention relates to a metal powder cake pressing machine which comprises a main pressing cylinder installation base and a secondary pressing cylinder installation base, a stand column is installed between the main pressing cylinder installation base and the secondary pressing cylinder installation base, a material box assembly is installed on the stand column, a box cover is rotatably installed on the material box assembly, one side of the box cover is rotatably connected with a cover cylinder, the cover cylinder is connected with the material box assembly, and the cover cylinder is connected with the material box assembly. A main pressure cylinder and a secondary pressure cylinder are respectively mounted on the main pressure cylinder mounting seat and the secondary pressure cylinder mounting seat, a quick cylinder assembly is mounted on the main pressure cylinder, the quick cylinder assembly is sleeved on the upright post, a cake outlet cylinder is connected to the side edge of the secondary pressure cylinder, and the cake outlet cylinder is connected with a material box assembly. When metal powder is compressed, the box cover can be driven by the cover cylinder to block an opening in the upper end of the material box, powder splashing and dust raising are reduced, and the safety of the operation process is improved.

The invention belongs to the technical field of powder metallurgy, and discloses a novel double-circular-seam atomizer and an atomizing device.The novel double-circular-seam atomizer comprises an atomizer base body, a vertically-through melt channel is formed in the middle of the atomizer base body and used for allowing a flow guide nozzle to penetrate through, and the atomizer base body is provided with a cavity coaxial with the melt channel and a circular-seam spraying hole; the cavity is used for inputting high-pressure gas, and the circular seam spraying hole communicates with the cavity and is used for spraying out the high-pressure gas to form high-speed gas flow so as to break metal melt liquid flow flowing out of the flow guide nozzle. The number of the circular seam spraying holes is two, the two circular seam spraying holes are the first circular seam spraying hole and the second circular seam spraying hole, the second circular seam spraying hole surrounds the first circular seam spraying hole from the outer side of the first circular seam spraying hole, and on any longitudinal section plane of the atomizer base body, the jet flow center lines of the second circular seam spraying hole and the first circular seam spraying hole intersect at one point; the melt liquid flow crushing effect can be improved, the diffusion angle of metal liquid drops is increased, formation of large particles is reduced, and metal powder with smaller particle size and better sphericity degree is obtained.

The invention provides a high-precision laser additive manufacturing method and device based on metal powder melting, and relates to the technical field of metal additive manufacturing, and the high-precision laser additive manufacturing device comprises a multi-element powder supply and electrification unit which is used for carrying out independent metering supply and airflow dispersion mixing on various metal powder in an inert atmosphere environment and enabling powder particles to obtain controllable charges; the electromagnetic field cooperative control unit is used for actively regulating and controlling the falling speed and the transverse track of the powder particles through the cooperative effect of a longitudinal magnetic field and a transverse electric field when the powder particles are in a charged state; the invention provides a metal powder forming technology path based on particle size active conveying and spatial positioning, and active conveying and accurate positioning of the metal powder particles in the flying process are realized by performing electrified regulation and control on single or small-scale metal powder particles and utilizing the action of an electromagnetic field. Therefore, layer-by-layer stacking forming is completed under the condition of not depending on the whole powder laying layer.

The invention belongs to the technical field of worm machining, and particularly relates to a worm machining thread grinding and polishing device which comprises a machine tool body, a worm body is installed on one side of the upper portion of the machine tool body, a supporting frame is fixed to one side of the top end of the machine tool body, a moving seat is arranged in the supporting frame, and a lifting seat is arranged below the moving seat. A mounting base is mounted at the bottom end of the lifting base, a cutting tool bit is fixed to the bottom end of the mounting base, two polishing heads are arranged below the mounting base, a movable cavity is formed in the bottom end of the mounting base, a connecting box is slidably connected into the movable cavity, an electric telescopic rod is mounted in the movable cavity, and a second motor is mounted in the connecting box; the grinding head is driven by the electric telescopic rod to move downwards so that the grinding head can make contact with the threaded surface of the worm main body, the grinding head is driven by the second motor to grind burrs and stripes of threads, meanwhile, metal powder can be collected through the dust collection manifold, and the metal powder can be prevented from splashing to the ground or the top end of the machine tool main body.

The utility model relates to the field of metal product hole machining, and discloses a metal product hole machining and polishing device which comprises a workbench, polishing equipment is arranged on the edge of the top end of the workbench, a polishing head is installed in the middle of the bottom end of the polishing equipment, supporting plates are welded to the two side edges of the upper surface of the workbench, and a movable rod is movably installed between the two supporting plates. An outer sliding sleeve sleeves the outer surface of the movable rod, a connecting plate is fixedly mounted in the middle of one end of the outer sliding sleeve, protective covers are rotatably mounted on two sides of the inner wall of the connecting plate, and gears are mounted on hinge shafts at the top ends of the protective covers and extend above the connecting plate; the protective cover is movably connected to the outer surface of the polishing head in a clamped mode, so that the effect of conveniently protecting the polishing head in use is achieved, the problem that metal scraps and metal powder scatter and fly all around during metal product hole polishing is solved, and the overall protective effect during metal product polishing is improved.

The invention discloses a method for measuring the particle size of metal powder by using a scanning electron microscope, which comprises the following steps: step 1, sample treatment: adhering a small conductive adhesive tape on a sample table, sprinkling metal powder on the adhered conductive adhesive tape, and purging to obtain the conductive adhesive tape adhered with the metal powder; step 2, parameter setting: setting acceleration voltage, working distance, diaphragm, image contrast, brightness, magnification times and scanning speed of a scanning electron microscope to observe the conductive adhesive tape adhered with the metal powder obtained in the step 1 to obtain an electronic image of metal powder particles; and processing and calculating the electronic image of the metal powder particles by using software to obtain the average particle size of the metal powder particles. According to the method disclosed by the invention, a solvent is not needed to disperse the sample, pollution of the solvent to the sample is effectively avoided, and the result is more accurate than that of directly measuring the particle size by using length software.

The invention discloses a high-entropy alloy nanoparticle as well as application and a preparation method thereof, and belongs to the technical field of mature biological membrane removal. The high-entropy alloy nanoparticles comprise the following raw materials: metal powder Fe, Ni, Mn, Nb, Cu and Ag; wherein the molar ratio of Fe to Ni to Mn is 1: 1: 1; the molar ratio of Nb to Fe is x, the molar ratio of Cu to Fe is y, the molar ratio of Ag to Fe is z, x is larger than or equal to 1.0 and smaller than or equal to 12.0, y is larger than or equal to 0.5 and smaller than or equal to 1.5, and z is larger than or equal to 0.05 and smaller than or equal to 0.25. According to the high-entropy alloy nano-particles, the biological membrane removal effect is further enhanced through component regulation and control, and the high-entropy alloy nano-particles have excellent photothermal conversion capacity under sunlight irradiation, so that the biological membrane removal performance is more excellent; and an efficient and long-term stable biofilm removal effect can be realized by using a very small amount of high-entropy alloy nanoparticles.

The invention provides a hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium, a preparation method of the hydrogen production electrode and a water electrolysis hydrogen production device, and relates to the field of water electrolysis hydrogen production. The preparation method of the hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium comprises the following steps: coating the surface of a conductive substrate with mixed powder; the conductive base material coated with the mixed powder is subjected to thermal oxidation treatment, the mixed powder comprises first metal powder, second metal powder and a pore forming agent, the first metal powder comprises Ni powder, and the second metal powder comprises Pt powder, Ru powder, Sn powder and Pr powder; and putting the structure subjected to thermal oxidation treatment into an alkaline solution, and activating to obtain the hydrogen production electrode doped with platinum, ruthenium, tin and praseodymium. The platinum, the ruthenium, the tin and the praseodymium are introduced into the hydrogen production electrode, so that the hydrogen evolution overpotential can be reduced. The hydrogen production electrode prepared by the method disclosed by the invention has relatively high catalytic activity, relatively high stability and a uniformly distributed porous structure, the electrolytic efficiency can be remarkably improved, and the service life of equipment is prolonged.

The invention relates to the field of metallurgical machining, and particularly discloses powder metallurgy pressure forming equipment and a forming method.The powder metallurgy pressure forming equipment comprises a bearing plate, a machining groove is formed in the bearing plate, and a pressure mechanism matched with the machining groove is arranged on the bearing plate; a containing box for containing metal powder is arranged on the bearing plate, a releasing assembly is arranged on the containing box, and the releasing assembly is used for releasing the powder in the containing box into the machining groove. In the pressurizing process, the movement of the containing box and the release action of powder are achieved, it is guaranteed that the powder in the containing box does not fall off, coordinated operation of the containing box and the release assembly is achieved, powder pressurizing forming is completed, in the machining process, continuity of the working procedures is achieved, connection of the working procedures is improved, connection of the working procedures is smooth, and the machining efficiency is improved. No procedure action waiting time exists, the machining time is shortened, the production efficiency is improved, the enterprise cost is reduced, and the market competition of enterprises is facilitated.

The invention discloses a flux-cored wire for extra-thick marine steel high heat input EGW and a preparation method of the flux-cored wire, and relates to the technical field of metal welding, the flux-cored wire comprises an outer skin of a double-layer alloy steel strip and powder filled in the outer skin, the filling rate of the powder is 20 + / -5%, and the powder comprises Fe, Mn, Si, Cr, Ni, Mo, V, B, S, Al, MgAl2O4, MgO-TiO2, ReOx and a slag former. According to the preparation method, the metal powder is positively charged, the rare earth nanoparticles are negatively charged through an electrostatic self-assembly technology, the metal powder and the rare earth nanoparticles are mixed with a slag former after being mixed, filtered and freeze-dried, an alloy steel strip is filled with the powder, and then rolling and drawing forming is conducted. In the welding process, the composite inclusions form a core-shell structure, a weld metal structure is regulated and controlled, acicular ferrite nucleation is promoted, and grains are refined, so that the low-temperature toughness and crack arrest performance of a weld are remarkably improved, the rare earth elements are beneficial for changing irregular inclusions into spheres, nucleation sites are increased, interface energy is reduced, and the nucleation rate of acicular ferrite is increased.

The invention discloses a multi-component composite oxide dispersion strengthening molybdenum alloy and a preparation method thereof, and relates to the technical field of refractory metal powder metallurgy preparation. The molybdenum alloy comprises a molybdenum matrix and a Y-X-O composite oxide nano precipitated phase dispersed and distributed in the molybdenum matrix. The molybdenum alloy comprises the following components in percentage by mass: 1%-2% of Y2O3, 0.3%-1.2% of an active element X, 96.5%-98.7% of molybdenum and inevitable impurities, wherein X is selected from one of Ti, Zr and Hf; the Y-X-O composite oxide nano precipitated phase and the molybdenum matrix form a coherent or semi-coherent interface, and the interface mismatch degree is less than or equal to 5%. The molybdenum alloy has excellent high-temperature strength and creep resistance, and can be applied to the high-temperature fields of nuclear industry, aerospace and the like.

The invention discloses a continuous automatic micro-nano metal powder production device and method. The continuous automatic micro-nano metal powder production device comprises an ultrasonic atomization system, a high-temperature pyrolysis system, a product collection system and a tail gas treatment system which are sequentially connected. The product collection system comprises a physical separation device and an electrostatic-magnetic field synergistic adsorption device; the electrostatic-magnetic field synergistic adsorption device comprises an electrostatic collection device and a magnetic field adsorption device arranged on the outer side of the electrostatic collection device. The electrostatic collection device comprises a positive electrode electric field arrangement mechanism and a negative electrode electric field arrangement mechanism, and the positive electrode electric field arrangement mechanism is arranged in a cylindrical inner cavity of the negative electrode electric field arrangement mechanism; the positive electric field arrangement mechanism comprises a trunk and a plurality of positive electrode plates distributed in the axial direction of the trunk. Metal powder is collected in a physical separation, high-voltage static electricity and magnetic field cooperation mode, the problems that nanoscale and micron-sized fine powder is prone to leakage and difficult to collect are effectively solved, the powder collection rate is increased, and effective recycling of products is ensured.

The invention relates to a method for preparing bimetallic core-shell structure composite powder based on an acoustic resonance technology, and belongs to the technical field of powder metallurgy. Adding the micron matrix metal powder and the nano coating layer metal powder into a mixing tank, replacing air in the mixing tank with protective gas or active gas, and setting the pressure of the gas in the tank and the temperature of the tank body; and then three-section acoustic resonance coating powder preparation is carried out, and the bimetal core-shell structure composite powder is obtained. According to the method, different metal powder is driven by acoustic resonance to do violent disordered movement, the outer layer of micron metal powder is evenly and tightly coated with nano metal powder under the combined action of electrostatic force and other physical force, and finally the core-shell structure bimetal coated powder is obtained. The method is simple, the preparation efficiency is high, the applicability is wide, the thickness adjustable range of the coating layer of the obtained bimetallic coated powder is wide, the obtained bimetallic coated powder is uniform and compact, the powder particle morphology can be effectively maintained, and pollution of other elements is avoided.

An additive manufacturing method based on micro-selective laser melting technology. By using a spot size of 30 μm or less, a metal powder layer thickness of 10 μm or less and ultrafine metal powders having a D90 particle size of 30 μm or less, and in combination with the control of a scanning laser power, a scanning rate, a linear energy density and a volumetric energy density within specific ranges, the method can print complex-structured metal parts having extremely high resolutions and surface smoothness, and can obtain a high-density internal structure of a component even under a relatively low energy density or power condition, thereby effectively protecting an optical system. Moreover, a printed component exhibits a defect-free microstructure, and has excellent electrical properties, thermal properties and mechanical properties. Particularly, ultrafine grains and a high dislocation density provide superior mechanical properties compared to conventional manufacturing materials. An infrared laser device can be used, thereby achieving low costs.

The invention belongs to the technical field of cable processing, and relates to a preparation method and application of a flexible superconducting coaxial cable outer conductor. The preparation method comprises the following steps: mixing Nb powder and Ti powder by adopting a vibrating ball mill to prepare NbTi composite powder; a substrate of laser powder bed melting equipment is preheated, the NbTi composite powder is spread on the substrate of the laser powder bed melting equipment, a melting powder layer is scanned through the laser powder bed melting technology, a three-dimensional communicated grid structure is formed through interlayer staggered scanning, finally, the NbTi net-shaped alloy pipe is placed in a strong acid solution to be soaked for a short time, redundant metal powder is removed, and the NbTi net-shaped alloy pipe is obtained. And finally, the preparation of the flexible superconducting coaxial cable outer conductor for the quantum computer is realized.

The invention provides MAB-phase ceramic powder as well as a preparation method and application thereof, and belongs to the technical field of ceramic materials. Firstly, elementary substance M powder and boron powder serve as raw materials, and MB powder is prepared through ball milling treatment, tabletting, heat treatment and grinding; the simple substance M powder is selected from transition metal powder; the preparation method comprises the following steps: by taking MB powder and aluminum powder as raw materials, carrying out wet ball-milling treatment, compression molding, packaging and sintering treatment to prepare MAB-phase ceramic powder; the packaging is carried out by adopting potassium bromide powder. According to the invention, an MS3-fused salt shielding synthesis / sintering method is adopted, salt is used as a reaction medium and a salt bed, the exterior of a sample is packaged with salt, so that a synthetic product is prevented from being oxidized during high-temperature synthesis in the air, and the preparation method has the characteristics of rapidness, high efficiency, energy conservation, environmental protection, low cost and the like, and is simple, convenient and feasible in the aspect of promotion of large-scale production.

The invention discloses a production process of rare earth microalloying low-cost 550MPa-grade weathering steel based on a CSP production line, and belongs to the technical field of steel and iron material preparation. According to the process, the composition proportion is optimized, La / Ce composite microalloying is adopted, and the CSP short-process continuous casting and rolling technology is combined, so that low-cost production of the high-performance weathering resistant steel is achieved. The method specifically comprises the key procedures of molten steel component design, whole-course protective pouring, homogenizing annealing at the temperature of 1100-1300 DEG C, six-rack controlled rolling, layered cooling and the like. The thickness of the obtained steel plate is 1-5 mm, the yield strength is larger than or equal to 550 MPa, the tensile strength is 620-780 MPa, the percentage elongation after fracture is larger than or equal to 16%, and the weight loss ratio is reduced by 15% or above compared with that of rare earth-free steel after the steel plate is immersed and corroded by 3.5% NaCl for 72 h. Through rare earth purification of molten steel, grain refinement and improvement of rust layer compactness, the corrosion resistance is remarkably improved while the use amount of Ni / Cu is reduced, the technical problem that nodulation is prone to occurring when rare earth is added in a CSP production line is solved, and the rare earth metal powder has the comprehensive advantages of being high in production efficiency, low in cost and stable in product performance and is suitable for weather-proof structural parts such as buildings and bridges.

The invention discloses a metal powder packaging quality detection system based on machine vision, and relates to the technical field of visual inspection, the system comprises a visual acquisition module, an image processing module and a central processing module, the visual acquisition module is used for acquiring at least one group of detection images of each metal powder packaging bag; the visual acquisition module transmits the detection image module to the image processing module; after the image processing module receives the detection image, the detection image is matched with the corresponding technical powder packaging bag, and the image processing module preprocesses the detection image; and after receiving the preprocessed detection image, the central processing module performs visual identification on the detection image to obtain use quality data of the packaging bag. Through combination of the visual sensor module and the image processing module, accurate detection of the quality of the packaging bag is realized, and the packaging bag can be monitored in real time.

The invention discloses a circumferential air inlet gas spiral-flow type atomizing nozzle, and aims to solve the problems of disordered air flow distribution and unbalanced pressure in a gas storage cavity of an existing atomizing nozzle so as to improve the atomizing efficiency and the powder quality. Comprising an upper cover, an air inlet disc and a base, the upper cover and the air inlet disc are matched to form an air inlet cavity for circumferential air inlet and a circular seam outlet, an air inlet channel is arranged in the circumferential direction of the air inlet cavity, and three guide blades are arranged at the lower end of the upper cover at equal angles and used for guiding the airflow direction; in addition, a metal liquid flow channel is formed in the center of the upper cover, and a base groove is used for containing an air inlet pipe and fixing a nozzle. By arranging the circumferential air inlet channel and the guide vanes, gas flows in a vortex shape, the mixing efficiency is improved, vortexes and dead zones are reduced, pressure balance in the cavity is achieved, rotating airflow with high impact force is formed, and the atomization effect is optimized; by improving the structural design of the atomizing nozzle, the particle size uniformity and sphericity degree of atomized powder are remarkably improved, satellite powder is reduced, and the powder yield and the powder quality are improved.

A process of manufacturing a golf club component includes spreading a thin layer of metal powder over a build plane defined over a build platform and bonding, using a laser, portions of the thin layer of metal powder. The spreading and bonding are repeated until the golf club component is formed. The golf club component comprises a lattice structure positioned within an internal cavity of the golf club component and the lattice structure is interrupted by a solid portion that extends along a bottom side of the golf club component from a toe region of the golf club component to a location between the toe region and a heel region of the golf club component.