2865 results about "Galvanization" patented technology

The invention discloses a zinc coating shedding performance detection method and system, particularly relates to the technical field of metal surface treatment quality detection, and is used for solving the problems of high misjudgment rate and insufficient detection precision caused by coating surface pseudo defect interference in the existing method. The method comprises the following steps: synchronously acquiring a multispectral reflection image and three-dimensional morphology data of the surface of a zinc coating through an industrial vision imaging device, extracting grain boundary distribution information based on multispectral data, and identifying radial pseudo defects in combination with a curvature manifold geodesic line energy gradient direction of the three-dimensional morphology; and further performing micro-crack topology analysis and grain boundary spatial correlation verification on the candidate region, eliminating texture interference and grain boundary overlapping regions, and finally outputting a high-confidence fall-off defect detection result, so that the identification capability of real defects under a complex galvanized surface is remarkably improved, and the method is suitable for automatic detection requirements of a high-speed continuous production line.

The invention discloses a machine vision-based intelligent detection method for steel galvanized surface defects, which comprises the following steps: S1, acquiring and preprocessing a steel galvanized surface image to obtain a standardized image; s2, constructing a specular reflection probability graph according to the brightness distribution and the gradient magnitude, and calculating a reflection intensity value; s3, calculating a structure tensor matrix, determining a main direction angle and an anisotropic consistency coefficient, and generating a direction feature matrix; s4, establishing a multi-scale direction adaptive phase kernel function, and performing phase modulation in a frequency domain by adopting an improved phase stretching transformation algorithm; s5, inverse Fourier transform is executed, and a phase response matrix is extracted; s6, performing weighted fusion to obtain a comprehensive phase response diagram; and S7, setting a threshold value according to the noise variance and the statistical characteristics, executing binarization and morphological processing, and outputting a defect region and boundary coordinates. According to the invention, high-precision identification and boundary positioning of steel galvanized surface defects are realized.

The invention discloses a gradient welding strength control method and system for a welded galvanized steel pipe for fire fighting, particularly relates to the technical field of welding automation control, and aims to solve the problem of abnormal welding seam strength gradient caused by instantaneous unbalance of an electric field and a thermal field during dynamic parameter switching in the prior art. Electromagnetic distortion characteristic quantity is extracted through frequency domain energy analysis, and thermodynamic offset state quantity is deduced in combination with a thermal diffusion trend; on the basis of frequency band correlation mapping of electromagnetic and thermodynamic parameters, thermoelectric cooperative imbalance levels are divided through mutual information entropy evolution, and a self-adaptive harmonic attenuation weight tuning instruction is generated; analyzing a mismatching relation between transient disturbance of an environment magnetic field and arc voltage modulation distortion in real time, dynamically generating a magnetic field compensation factor and reversely superposing the magnetic field compensation factor to a control instruction; and in combination with the matching degree of molten pool oscillation energy and a harmonic frequency spectrum, correcting wire feeding rate calibration, reconstructing a multi-band harmonic energy proportion spectrum, outputting an anti-interference welding control signal, and realizing dynamic balance between arc stability and molten pool heat input.

The invention discloses internal and external galvanization equipment for a special pressure vessel, and belongs to the technical field of pressure vessel galvanization, the internal and external galvanization equipment for the special pressure vessel comprises a placing mechanism for galvanization of the pressure vessel, the placing mechanism comprises a bottom plate and a lifting frame, and six connecting rods are fixedly mounted on the lifting frame; each connecting rod is provided with two taking and placing mechanisms used for clamping the pressure container to be galvanized. According to the invention, through the arrangement of the multi-station synchronous operation putting-in mechanism, the automatic lifting, translation and descending of the pressure container are realized, so that the galvanizing, unloading and loading processes are continuously carried out, and the production efficiency is greatly improved; according to the pick-and-place mechanism, through alternate driving of a driving triangular wheel and a driven triangular wheel, supporting points of a clamping rod are switched in a staged mode in the galvanization process, it is guaranteed that connecting lugs of a pressure container are not fixedly shielded, and galvanization blind areas are avoided; through cooperation of the compression spring and the lower friction ring, the passive triangular wheel is kept fixed in a non-driving state, and accidental rotation is prevented.

The invention discloses a galvanized steel sheet blanking and shearing device and a working method thereof, and relates to the technical field of shearing devices. According to the galvanized steel sheet blanking and shearing device and the working method thereof, the galvanized steel sheet blanking and shearing device comprises a shearing machine main body, a lower shearing knife arranged on the shearing machine main body and an upper shearing knife vertically arranged on the shearing machine main body, a dynamic material supporting mechanism is arranged on the shearing machine main body, and the dynamic material supporting mechanism comprises a first rotating seat and a second rotating seat, and the two first rotating seats are arranged on the shearing machine main body. Through the design of the dynamic material supporting mechanism, accurate dynamic material supporting of a sheared steel plate is achieved, and the problems of shearing opening size deviation, stress concentration and the like caused by the fact that the steel plate droops due to gravity in the existing shearing process are solved; the material supporting assembly synchronously ascends at the moment of shearing, it is ensured that the steel plate is supported in time, and falling deformation or impact on equipment is avoided.

The invention discloses a special pipe galvanization processing device and method, and relates to the technical field of transfer devices.The special pipe galvanization processing device comprises a mounting plate, a galvanization box is arranged on the side of the mounting plate, a supporting frame is fixedly mounted at the bottom of the galvanization box, a first motor and a second motor are fixedly mounted on the side of the mounting plate, and a water inlet pipe is arranged on the side of the galvanization box in a communicating mode; a water outlet pipe is arranged at the bottom of the galvanizing box in a communicating mode, a galvanizing assembly and a shaking assembly are arranged on the side portion of the mounting plate and used in cooperation, and a supporting assembly is arranged above the galvanizing box. Through the arrangement of the shaking assembly, redundant zinc liquid is shaken off, the drying time of the zinc liquid on the surface of the special-shaped pipe can be shortened, after the residual zinc liquid on the surface of the special-shaped pipe is reduced, the solidification process of the zinc liquid can be completed more quickly, and therefore the waiting time is shortened.

The invention relates to the technical field of steel pipe hot galvanizing, in particular to steel pipe hot galvanizing automation equipment and a galvanizing technology.The steel pipe hot galvanizing automation equipment comprises a zinc liquid pool, a second horizontal moving part is fixedly arranged on one side of the zinc liquid pool, placing tables are arranged on one side of the second horizontal moving part at intervals, and the upper ends of the placing tables are in threaded connection with blocking strips through bolts; a moving assembly is arranged above the molten zinc pool, a stirring assembly is arranged on the outer surface of the moving assembly, a deslagging assembly is arranged at the upper end of the molten zinc pool, first electric telescopic rods are detachably connected to the two sides of the molten zinc pool through supports, push plates are fixedly arranged at one ends of the first electric telescopic rods, and an air blowing part is arranged on one side of the molten zinc pool in a penetrating mode. Through the arrangement of the moving assembly and the slag removal assembly, automatic hot galvanizing of the special-shaped steel pipe is achieved, automatic removal of zinc slag on the surface of zinc liquid can be achieved, through the arrangement of the moving assembly, the stirring assembly and the first electric telescopic rod, residues of the zinc liquid can be reduced, and the possibility of zinc tumor occurrence is reduced.

The invention relates to the technical field of steel plate hot-dip production, and discloses an intelligent scheduling system for a steel plate hot-dip production process. The system comprises a working condition sensing module which is used for continuously collecting steel belt inlet temperature, zinc liquid component concentration fluctuation data, air knife pressure time sequence parameters and roller system operation state signals of a galvanizing pot area; the feature extraction module receives the working condition data flow, analyzes the steel strip surface temperature field distribution features and the zinc liquid viscosity change rule, and generates a process feature spectrum; the parameter optimization module dynamically adjusts membership function parameters and rule base weight coefficients of the fuzzy reinforcement learning controller according to the process characteristic spectrum, and outputs an optimized plating layer control parameter set; the self-adaptive plating layer control module generates a plating layer thickness control instruction based on the real-time zinc liquid temperature parameter and the optimized plating layer control rule set; and the dynamic roller system scheduling module realizes global cooperative control of the roller system speed based on the instruction. The system can realize intelligent scheduling of the steel plate hot-dip production process.

The invention provides a hot galvanizing device for a thin-wall square tube. A feeding assembly and a rotating wheel are arranged in a zinc pot, the feeding assembly is used for limiting the displacement track of a steel tube, the rotating wheel is used for driving the steel tube to move, the zinc pot is filled with a plating material, a pulling-out assembly is used for guiding the steel tube out of the zinc pot, and the feeding assembly comprises a first feeding frame; the first feeding frame is provided with a first guide groove used for guiding a steel pipe, a reinforcing structure is fixedly installed on one side of the first feeding frame, a plurality of first limiting protrusions are distributed on wheel blades of the rotating wheel, the periphery of the steel pipe is located between the two first limiting protrusions, and a plurality of second limiting protrusions are arranged on a pulling-out head of the pulling-out assembly. The periphery of the steel pipe is located between the two second limiting protrusions. According to the hot galvanizing device for the thin-wall square pipe, the shape of the first guide groove can be stabilized through the reinforcing structure, the reliability of the device is improved, so that the galvanizing efficiency of the steel pipe is improved, and the first limiting protrusion and the second limiting protrusion are used for limiting the relative positions of the steel pipe correspondingly.

The invention provides a grounding grid intelligent operation and maintenance system based on digital twinning and computer equipment. A multi-factor coupled corrosion kinetic equation is generated based on a laboratory grounding grid steel sheet accelerated corrosion test, and the corrosion kinetic equation is used for predicting the instantaneous corrosion rate of a galvanized steel sheet and estimating the mass corrosion loss of the steel sheet within specified time; combining the corrosion kinetic equation with the simulation model to establish a steel sheet corrosion data set, and training a physical information neural network to construct a corrosion prediction physical model; training the corrosion prediction physical model by adopting a neural network regression algorithm; constructing a grounding grid digital twin model by taking the corrosion prediction physical model as a base and combining field environment monitoring data; defining a Markov decision process in the digital twin environment of the grounding grid; and based on the feedback and reward function of the digital twin model of the grounding grid, training by adopting a near-end strategy optimization algorithm to obtain an intelligent decision-making body, and continuously optimizing the decision-making of the intelligent decision-making body through an online fine tuning function.

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

A reinforcement beam for an automotive component is continuously formed with a metal sheet that is roll formed to have at least one tubular portion that extends along a length of the reinforcement beam. A solid state forge weld is formed between an edge of the metal sheet and an intermediate portion of the metal sheet to close a seam that extends along the tubular portion of the reinforcement beam. Prior to forming the solid state forge weld, select portions of the metal sheet are heated to a desirable welding temperature with a high frequency current delivered by electrical contacts to opposing sides of the weld seam. The desired welding temperature may burn off a galvanized coating on the metal sheet at the select portions prior to forming the solid state forge weld that is generally void of zinc inclusions.

The invention relates to the technical field of steel-cored aluminum stranded wires, and provides an overhead high-conductivity steel-cored aluminum stranded wire which comprises a galvanized steel core and aluminum wires stranded on the surface of the galvanized steel core, the galvanized steel core is formed by stranding 19 steel wires, and the aluminum wires are divided into two layers and stranded on the outer side of the galvanized steel core; the preparation method of the galvanized steel core comprises the following steps that after being galvanized, a steel wire is added into a passivation solution to be passivated, and the galvanized steel core is obtained after drying and twisting; the passivation solution is prepared from the following raw material components: waterborne acrylic resin, nickel nitrate, sodium carboxymethyl cellulose, sodium dodecyl sulfate, functionalized single-walled carbon nanotubes and water; the functionalized single-walled carbon nanotube is prepared from the following raw materials: a single-walled carbon nanotube and 5-carboxyl-2, 3-diaminopyridine. According to the technical scheme, the problem that the corrosion resistance of the manufactured overhead steel-cored aluminum stranded wire is poor due to the fact that the corrosion resistance of a galvanized steel core is poor in the prior art is solved.

The invention discloses a controllable preparation method for the eutectic phase size of a medium-aluminum type zinc-aluminum-magnesium coating, which comprises the following steps of: preparing the following components in percentage by weight: 0.01 to 0.08 percent of C, less than or equal to 0.03 percent of Si, 0.15 to 0.26 percent of Mn, 0.15 to 0.26 percent of P, less than or equal to 0.01 percent of S, 0.02 to 0.06 percent of Als, less than or equal to 0.3 percent of Ti and the balance of Al; the base material is subjected to annealing treatment, zinc plating treatment and post-plating treatment after multiple working procedures, and the plating layer with the ternary eutectic structure morphology is obtained. Through optimization of base material components, the galvanizing process and the cooling process, accurate control over the eutectic phase size in the plating layer is achieved, and therefore the corrosion resistance, the adhesive force and the uniformity of the plating layer are improved.

The invention discloses high-surface-quality 980MPa-grade hot-dip galvanized dual-phase steel and a preparation method thereof. The high-surface-quality 980MPa-grade hot-dip galvanized dual-phase steel is prepared from the following components in percentage by mass: 0.05 percent to 0.11 percent of C, 0.5 percent to 0.9 percent of Si, 2.1 percent to 2.5 percent of Mn, 0.03 percent to 0.05 percent of Nb, 0.04 percent to 0.06 percent of Ti, 0.13 percent to 0.28 percent of Mo, 0.02 percent to 0.05 percent of Als and the balance of iron and inevitable impurities. According to the method, through innovative humidification annealing and oxidation-reduction dual-process collaborative parameter design, the annealing dew point and the oxygen content are controlled in a segmented mode, stable control over the galvanized surface quality of the high-Si and Mn dual-phase steel is achieved, the effect of improving thick-specification products is obvious, the overall qualification rate is greatly increased, element external oxidation is inhibited, the coating quality is optimized, the production efficiency is improved, and the method is suitable for large-scale popularization and application. The problem of surface peroxidation or zinc layer falling easily caused by a traditional single process is solved, and the high-end requirement for high-performance steel is met.

The utility model provides a galvanized external blowing ring with adjustable pressure. The galvanized external blowing ring comprises a shell; the shell is of an annular structure, and an annular cavity structure is formed in the shell. An inner shell of a circular structure is fixedly arranged on the inner side of the shell. Six sets of sliding rods of cylindrical structures are fixedly arranged in a rectangular groove in the inner wall of the inner shell in an annular array shape. A sliding frame of a rectangular frame structure is slidably arranged on the outer side of the sliding rod. Adjustment can be conveniently carried out according to different use requirements, the practicability of the device is greatly improved, different production requirements are met, and adjustment operation is simple and rapid.

The present invention relates to the technical field of welding equipment, specifically a galvanized round pipe welding equipment, including a workbench and a welding gun, and also including a first clamping member, a second clamping member, a deflection assembly, a grinding assembly, a rotating assembly, an expansion and contraction assembly and an adjustment assembly. The second clamping member can move along a preset path to utilize the first clamping member and the second clamping member to clamp two galvanized steel pipes welded at a certain angle. The deflection assembly is used to drive the second clamping member to move along the preset path, and the expansion and contraction assembly is used to realize the separation or combination of the two parts of the rotating assembly; the present invention can adjust the angle between the second clamping member and the first clamping member according to the angle of the two galvanized steel pipes to be welded, so that it can better adapt to the welding requirements of steel pipes at different angles, without the need for manual support and pressing, and can ensure that the two steel pipes can be accurately docked during the welding process to achieve a good welding effect.

The invention discloses an intelligent evaluation method for coating adhesion of a hot-dip galvanized steel pipe, and relates to the technical field of intelligent quality control of galvanized steel pipes, and the method comprises the following steps: constructing a galvanization process time sequence multi-dimensional data set by fusing static attributes of a steel pipe, time sequence process parameters of a galvanization production process and coating thickness measurement data; based on an improved signal volatility analysis method, interface reaction dynamic characteristics and cooling process dynamic characteristics are extracted; implicit microstructure features are generated through a feature cross structure guided by material science and physical information; and realizing continuous numerical prediction and grade probability output of the adhesion of the plating layer by using the implicit space representation regression model based on the antagonistic auto-encoder. According to the method, interpretable mapping between the microstructure and the coating adhesive force in the galvanization process is achieved, the coating adhesive force prediction accuracy and evaluation reliability are improved, and a decision basis can be provided for process adjustment and quality risk pre-control in the production process.

The invention provides a dust removal method and system for a surface galvanizing automatic production line, and the method comprises the steps: installing air quality sensors at all key points in a workshop of the surface galvanizing automatic production line, and monitoring the dust concentration, humidity, temperature and other key parameters in the air in real time; the air quality in the workshop is evaluated according to the key parameters, and if it is monitored that the air dust concentration of a certain workshop area exceeds a preset safety threshold value, the workshop area is automatically adjusted to a dust removal mode; judging that a dust removal mode needs to be started, sending an instruction to dust removal equipment, starting a corresponding dust removal program, and starting an industrial dust collector or a spraying system; after the dust removal equipment starts to work, the air quality sensor continues to monitor the air quality and provides real-time feedback. The system comprises a parameter acquisition module, a quality evaluation module and a dust removal execution module. According to the invention, real-time monitoring, intelligent evaluation, automatic dust removal and continuous optimization of air quality are realized.

The invention provides a shearing device for a galvanized steel sheet, and relates to the technical field of steel sheet shearing, the shearing device comprises a bottom plate, shearing plates are symmetrically arranged on the bottom plate in a sliding mode, shearing wheels which are vertically separated are arranged on the sides, close to each other, of the two shearing plates, polishing mechanisms are installed on the shearing plates, and a winding mechanism and a lubricating mechanism are further arranged on the bottom plate; and the grinding mechanism drives the winding mechanism and the lubricating mechanism while grinding. According to the galvanized steel sheet shearing device, by arranging the grinding mechanism, a sheared galvanized steel sheet can be ground, burrs can be effectively removed, in addition, by arranging the winding mechanism, sheared waste can be collected, the waste does not need to be manually treated, the labor intensity of workers is greatly reduced, by arranging the lubricating mechanism, a shearing wheel can be lubricated, and the shearing efficiency is improved. And the service life of the shearing wheel is effectively prolonged, and practicability and economical efficiency are higher.

The utility model provides a tool for slurry leakage prevention and installation positioning of a laminated slab, which comprises a plugging strip and an installation positioning sheet, the plugging strip adopts a galvanized rectangular steel pipe, a plurality of round holes A are uniformly and symmetrically formed in two side edges of the plugging strip at intervals and are used for installing screws, and a sponge strip with a semicircular section is adhered to the top surface of the plugging strip; the installation positioning piece is made of galvanized flat iron, is of a right-angle bent structure and is divided into a connecting section, a bent section and a positioning section, the connecting section is used for being connected with the plugging strip, and a round hole B is formed in the center of the connecting section and used for installing a screw. The plugging device is installed at the external corner position of a formwork to form a whole with the formwork, operation is easy, convenient and rapid, gaps within the width of 7.5 mm can be plugged, slurry leakage is effectively prevented, the construction quality of an assembly type structure is guaranteed, the installation positioning piece can be disassembled after the composite slab is installed, the plugging strip can be disassembled when the formwork is disassembled, all the components can be repeatedly used, and the plugging device is economical and practical.

The invention discloses an intelligent information acquisition method and system for a steel pipe galvanizing production line, and relates to the technical field of information acquisition optimization. An intelligent information acquisition system for a steel pipe galvanizing production line comprises a steel pipe galvanizing production information acquisition module and a steel pipe galvanizing production optimization module. According to the method, the metal vapor concentration, the iron-zinc alloy layer frequency spectrum signal and the zinc liquid temperature data are collected at high frequency, and the dynamic zinc explosion risk coefficient is quantitatively analyzed, so that real-time early warning of a potential zinc explosion event is realized; compared with a traditional method depending on macroscopic temperature or concentration observation, the zinc explosion risk can be recognized in advance, the occurrence probability of zinc explosion accidents is remarkably reduced, and production safety is improved; according to the system, galvanizing production parameters, galvanizing liquid components, production microscopic signals and steel pipe state data can be collected at the same time, full-process and multi-dimensional data coverage is achieved, information integrity is guaranteed, and a reliable basis is provided for production monitoring and analysis.

The template reinforcing supporting piece comprises a steel plate, sliding grooves are formed in the two ends of the steel plate respectively, and bolts are arranged in the sliding grooves. The steel plate is a galvanized steel plate; the galvanized angle steel is arranged on the upper surface of the steel plate and located between the sliding grooves in the two end parts; the galvanized angle steel is simultaneously arranged on the upper surface and the lower surface of the steel plate; at least three supporting assemblies form a group and surround the outer ring of the formwork in a triangular shape, and all the assemblies are connected and fixed by inserting bolts into the sliding grooves. The special-shaped column formwork fixing device effectively fixes a special-shaped column formwork, avoids unnecessary structural defects, and enables a building to be more attractive and safer.

The invention discloses a galvanized sheet production line waste heat utilization device, and relates to the technical field of galvanized sheet production. The waste heat utilization device for the galvanized sheet production line comprises a heat exchange pipe, a heat conduction coil pipe arranged on the heat exchange pipe in the airflow direction of the heat exchange pipe, a second valve plate arranged in the middle of the heat exchange pipe and first valve plates located on the two sides of the second valve plate, the first valve plates and the second valve plate are arranged in a crossed mode, and the first valve plates and the second valve plate rotate relatively. Flue gas containing heat in the heat exchange pipe is disturbed in a fluctuating mode. The driving assembly is used for driving the first valve plate and the second valve plate which are arranged in a crossed mode to rotate relatively, fluctuating turbulent flow is conducted on galvanized flue gas in the heat exchange pipe, the single flow direction of the galvanized flue gas is changed, the galvanized flue gas in the flowing process is made to be deflected and reversed in order to make full contact with the heat conduction coil pipe for heat exchange, and the waste heat recovery efficiency is improved; and the dynamic rotation of the two groups of valve plates can also play a role in baffle flow slowing, so that the circulation heat exchange time of the galvanized flue gas is prolonged.

The invention discloses a chromium-free fingerprint-resistant coating agent for a galvanized steel sheet and a preparation method of the chromium-free fingerprint-resistant coating agent. The chromium-free fingerprint-resistant coating agent is prepared from the following elements in percentage by mass: 1%-5% of sodium molybdate or / and sodium tungstate, 0.5%-2% of a phytic acid-chitosan compound, 0.3%-1.0% of a chelating titanate coupling agent, 2%-5% of fluorosilane modified nano SiO2, 30%-55% of waterborne hyperbranched polyurethane resin, 0.5%-2% of oxidized polyethlene wax and the balance of deionized water. The chromium-free fingerprint-resistant coating agent disclosed by the invention has excellent fingerprint resistance, high adhesive force and environmental protection property, is free of white rust in neutral salt mist for 150 hours and red rust in neutral salt mist for 360 hours, the white rust area is less than 5%, the industrial requirements of galvanized steel sheet surface treatment are met, and the problem of environmental risk in the prior art is avoided by adopting the combination of bio-based corrosion inhibitors.

The invention discloses a zinc skin and zinc powder cleaning device for a galvanized sheet, which relates to the field of galvanized sheet coating cleaning, and comprises a zinc skin and zinc powder removing box arranged between an outlet of a sheet galvanizing cooling section and a tension roller, and two sheet guide parts symmetrically arranged in the zinc skin and zinc powder removing box, the supporting guide roller is arranged in the zinc skin and zinc powder removing box and located between the two plate guide parts, the swinging zinc removing device is arranged with the supporting guide roller as the circle center, and the zinc slag sucking and removing device and the air injection zinc removing device are further included. According to the device, the removal rate of zinc skin and zinc powder on the surface of the galvanized plate is high, meanwhile, zinc slag can be recycled in time, the removed zinc slag is prevented from secondarily polluting the plate surface, meanwhile, the tool bits which work alternately can prevent the tool bits from being overheated during continuous work, and the service life of the tool bits is prolonged.

The invention relates to the field of coating materials, and discloses a passivation solution for a hot-dip galvanized workpiece as well as a preparation method and a use method.The passivation solution is prepared from organic pottery clay, titanium dioxide, ethylene-vinyl acetate copolymer emulsion, waterborne epoxy silicon resin, a silane coupling agent, a coloring agent, filler, an auxiliary and water. The problem of light pollution in areas with high illumination intensity can be effectively solved, workpieces and vegetation in natural scenic areas are organically fused to form beautiful scenery lines, and the technical problems of high cost and weak corrosion resistance of green coatings caused by the fact that green towers are achieved by coating green paint at present can be effectively solved. And the pole tower is green, attractive and good in economic benefit.

The utility model relates to section steel hot galvanizing equipment, and belongs to the technical field of hot galvanizing. According to the technical scheme, the low point of the front end of a magnetic roller frame is located on the discharging side of a zinc pot, the high point of the rear end of the magnetic roller frame is matched with an inclined roller way, and the inclined roller way inclines upwards and is matched with the inclination angle of a row of magnetic rollers; an air knife is arranged at the low point of the front end of the magnetic roller frame, and the air blowing direction of the air knife faces the zinc pot; and after the whole group of section steel is adsorbed by the magnetic roller after galvanization on the lifting hook, the surface of the whole group of section steel is cleaned through the air knife, and redundant zinc liquid after cleaning is blown back to the zinc pot. The device has the positive effects that the material receiving hook groups are alternately finished in the processes of material receiving, galvanizing and leading up, the efficiency is improved, the product quality is stable, the whole group of profile steel is led up by adopting the magnetic roller, meanwhile, the zinc blowing treatment is performed on the discharge side of the zinc pot, the process flow is shortened, the air knife is arranged in the area of the zinc pot, redundant zinc liquid is directly blown back to the zinc pot, and the production cost is reduced. And the zinc consumption is further reduced.

The invention belongs to the technical field of mining construction, and particularly relates to an artificial roof structure and a construction process thereof. The construction process comprises the steps that S1, anchor rod holes are constructed in the positions, 1 m away from a bottom plate, of two sides of a stope, S2, ore cushion layers with the thickness of 200 mm are laid and leveled, S3, I-shaped steel bottom beams are erected and fixed through round steel anchoring parts and welding base plates, S4, a reinforcing mesh is laid, main ribs and auxiliary ribs are bound in a crossed mode and welded to anchor rods, according to the composite structure design of the double-layer reinforcing mesh, the steel wire mesh and the hanging bar system, a three-dimensional stress system is formed, the bending resistance and the shearing resistance of the false roof are remarkably improved, the problem that a traditional false roof is prone to cracking and sinking is solved, and the false roof has the advantages of being simple in structure, convenient to use, economical and practical. Due to the layered matching design of the full-tailing cemented filling body, the bearing strength is guaranteed, seamless roof contact is achieved, the risk of roof hollowing is reduced, the pressure of stope operation circulation is relieved, the ore removal efficiency is improved, and the mining cost is reduced.

The invention provides an intelligent optimization method and system for technological parameters of a galvanized steel sheet. The method comprises the following steps: performing thickness detection on different areas of a plating layer formed on the surface of a galvanized steel sheet to obtain final plating layer thickness distribution data. And according to the temperature distribution data and the final coating thickness distribution data, heat conduction efficiency correction parameters of all the heating areas of the molten zinc tank are generated. According to the heat conduction efficiency correction parameters of all the heating areas of the molten zinc tank, a pre-trained first process parameter intelligent optimization model is adopted to optimize galvanization time and temperature distribution data, and a pre-trained second process parameter intelligent optimization model is adopted to optimize electrode pressure parameters and resistance spot welding parameters in the welding stage; the mass estimation value of the galvanized steel sheet is greater than a preset mass threshold value. According to the technical scheme, the galvanizing process and the welding parameters are intelligently optimized through double models, the production line is dynamically adjusted based on real-time data, and it is ensured that the quality of the galvanized steel sheet stably reaches the standard.