11630 results about "Scrap" patented technology

The invention discloses an intelligent welding forming method and system for a green building steel heating radiator, and the method comprises the following steps: carrying out the surface defect recognition of a steel heating radiator base material based on an AI visual inspection system, recognizing a qualified base material, and automatically matching the type of a welding material from a material database according to the material and thickness parameters of the qualified base material. Welding parameters are intelligently matched through AI visual inspection and a neural network model, a laser and friction stir hybrid welding process is combined, traditional manual operation is replaced, the welding efficiency and precision are improved, and the problems of uneven welding seams and the like are solved; welding data are analyzed in real time through a multi-mode AI model, parameters are dynamically adjusted, intelligent defect recognition and repair welding are achieved in cooperation with 3D visual inspection, and the quality stability is improved through whole-process monitoring; smoke dust is treated through an environment-friendly process, acid pickling is replaced with mechanical rust removal, efficient recycling of materials is achieved through waste recycling, a green manufacturing system is constructed, and the sustainable development requirement of green buildings is met.

The present invention relates to the technical field of carbon footprint accounting. Disclosed are a carbon footprint accounting method and system for a power grid material product based on life cycle assessment (LCA). The method comprises: on the basis of an LCA method, building a product carbon footprint model for a power grid material product; collecting power grid material product data, and on the basis of the collected data, accounting the carbon emission of the power grid material product from the raw material acquisition stage to the scrap recovery stage; during carbon footprint accounting, selecting power carbon emission factors of different grades in each stage, and accounting the power carbon emission; and on the basis of the accounted data, performing high-precision real-time carbon footprint accounting of the power grid material product in the whole life cycle. The environmental impacts of the product are assessed more accurately. Moreover, real-time accounting can reflect any change or improvement effect in time. By means of the comprehensive carbon footprint analysis, detailed carbon footprint accounting can reveal high-emission activities, provide data support for optimization of the product design and production process, and reduce the overall carbon emission.

The invention relates to 390mm * 510mm section bloom B3 grinding ball steel and a preparation method thereof, and the preparation method comprises the following steps: loading a certain amount of molten iron and scrap steel for primary smelting in a converter, and sequentially adding an aluminum ingot, an alloy, pre-melting type calcium aluminate and refined lime when 1 / 4 of the steel is tapped; carrying out LF refining on the tapping molten steel subjected to primary smelting in the converter to obtain refined molten steel; the refined molten steel is subjected to RH vacuum refining, and RH vacuum refined molten steel is obtained through superheat degree control, RH working vacuum degree control, retention time control and soft blowing time control; and continuous casting is conducted, specifically, the RH vacuum refined molten steel is subjected to set pulling speed, crystallizer and tail end electromagnetic stirring and soft reduction treatment according to the pouring section, and the bloom B3 grinding ball steel with the section being 390 mm * 510 mm is obtained. According to the method, the converter primary smelting, the LF refining, the RH vacuum refining and the molten steel whole-process protection pouring smelting process are controlled, the cleanliness of the molten steel is guaranteed, and generation of large-particle inclusions is avoided; and process parameters are reasonably set in the continuous casting process, so that the internal quality of the bloom is obviously improved, and the production efficiency is greatly improved.

The invention discloses an environment-friendly steel pipe cutting machine capable of preventing chippings from scattering all around, and belongs to the technical field of steel pipe cutting machining. The environment-friendly steel pipe cutting machine comprises a rack stably placed above the ground, a first motor is fixedly installed on the upper surface of the rack, and a discharging pipe is rotatably installed on the upper surface of the rack in a penetrating mode; a cutting machine shell is installed on the outer side of the discharging pipe in a lifting mode through an air cylinder, meanwhile, a cutting blade is rotatably installed on the inner side of the discharging pipe, a protection pipe is connected to the upper end of the discharging pipe, a cutter hole is formed in the middle of the protection pipe, sliding blocks are symmetrically arranged in the cutter hole in a sliding mode, and corrugated blocking pieces are arranged on the outer sides of the sliding blocks. And meanwhile, a sealing clamping assembly is further arranged on the protection pipe, and a cleaning assembly used for cleaning residual scraps on the inner wall is further arranged on the inner side of the protection pipe. According to the environment-friendly steel pipe cutting machine capable of preventing the chippings from scattering all around, a cutting area can be effectively covered and protected, the chippings are prevented from splashing and scattering, and the chippings can be conveniently collected after cutting is completed.

The invention discloses a shaping robot, a shaping system and a grain processing method thereof. An integrated moving and transferring device is used as a chassis for bearing all modules; the shaping industrial robot is used for driving a cutter on the mechanical arm to conduct shaping machining. The medicine scrap sucking and cleaning device is used for cleaning scraps generated by processing; the tool changing magazine is used for placing and managing tools and comprises a quick-changing tool rest, and a detection sensor used for detecting whether the tools exist or not is arranged on the quick-changing tool rest; the control system comprises a coordinate system management module, a tool path planning module, a robot kinematics module, a collision detection module, a motion simulation module and a robot program generation module. Automatic machining positioning, automatic machining path planning and automatic cutting tool switching and management can be achieved; the automation degree of grain cutting machining is effectively improved; in the shaping process, temperature and contact force detection sensors are used for detection, and early warning protection in the machining process is achieved.

The invention relates to the technical field of carbon emission, in particular to a full-life-cycle carbon footprint tracking management platform for power equipment. The platform collects carbon emission parameters in the whole process from raw material input to scrap recovery in real time through a monitoring equipment network and a sensor array to generate an original monitoring data stream; performing multi-source fusion and deviation correction on the data stream to generate a standardized carbon footprint sequence; a carbon emission trend model is constructed based on sequence extraction correlation features, and a dynamic adjustment strategy is generated when an integration fracture risk or emission abnormity is detected; transmitting an abnormal signal through a mobile terminal interface, receiving an adjustment instruction, and generating a closed-loop control signal; storing the extended carbon footprint data to construct a full life cycle file; estimating emission fluctuation to generate a stability strengthening strategy; and a monitoring-analysis-control-prediction four-order optimization link is formed. According to the invention, accurate tracking and dynamic optimization of carbon emission are realized, data integrity and management timeliness are improved, and technical support is provided for green manufacturing of power equipment.

The invention belongs to but is not limited to the technical field of aluminum alloy preparation, and discloses a high-plasticity aluminum alloy prepared from secondary aluminum and a preparation method, high-quality secondary aluminum waste is selected, and obvious impurities are removed; carrying out chemical or mechanical cleaning on the secondary aluminum, and sorting; the pretreated secondary aluminum waste is added into a smelting furnace to be smelted; a purifying agent is added for melt purification; the melt is further purified through inert gas stirring and standing; adding a proper amount of alloy elements into the melt; under the protection of inert gas, uniformly stirring the melt; casting the melt into a cast ingot by adopting a semi-continuous casting or continuous casting process; controlling the cooling speed; carrying out homogenizing heat treatment on the cast ingot to eliminate composition segregation in the cast ingot; and extruding and rolling to obtain the high-plasticity aluminum alloy material. According to the method, the purity of the aluminum alloy is improved, the performance uniformity is enhanced, and the aluminum alloy material with high plasticity and excellent mechanical performance is obtained and is suitable for industrial application with high requirements.

The invention relates to the field of steelmaking. More specifically, the invention relates to a process for controlling nitrogen increase in electric furnace smelting. The invention provides a method for producing low-nitrogen steel from electric furnace full waste steel. The method specifically comprises the steps that waste steel is loaded into an electric furnace, CO2 gas is injected into the electric furnace before and after loading, air is exhausted, and micro-positive pressure in the electric furnace is kept. The method comprises the following steps: after an electric furnace forms a molten pool, injecting limestone powder at the top of the furnace with the injection amount of 60-80kg / t and the injection carrier gas of CO2 gas, after the electric furnace forms the molten pool, injecting oxygen and carbon powder by adopting a carbon-oxygen lance to make foamed slag, injecting CO2 gas into the molten pool to decarburize, produce two times of CO gas and intensify denitrification, and during tapping of the electric furnace, protecting steel flow from ending with air by adopting CO2 gas, and feeding into the next process for smelting after tapping of the electric furnace. Application proves that when the method is used for smelting low-nitrogen steel, nitrogen in the electric furnace can be controlled not to be increased, N is smaller than or equal to 0.003% after tapping of the electric furnace, the smelting rate of the low-nitrogen steel grade is increased, and low-carbon emission production of special varieties is achieved.

The invention discloses a mechanical part pre-deformation clamping process method based on simulation analysis, and relates to the technical field of mechanical manufacturing. The method comprises the following steps that S1, a design drawing, material characteristic parameters, blank size specifications and technical parameters of a clamp system of a to-be-machined part are collected; according to the method, an integrated simulation model of a part, blank and clamp system is constructed, blank key parameters and the constraint relation of all parts are fused, multi-field coupling simulation is combined, the theoretical deformation field pre-judgment precision is greatly improved, reliable data support is provided for pre-deformation design, a target compensation curved surface is generated through a geometric inversion algorithm, and the pre-deformation design precision is improved. By matching with a pre-deformation clamp with an adjusting mechanism, reverse pre-deformation is realized, differences of different batches of blanks are adapted, machining and rebound deformation are effectively counteracted, simulation and process parameters are corrected through a detection result by means of a closed-loop optimization mechanism, machining precision stability is guaranteed, trial cutting cost and rejection rate are reduced, and the method is suitable for machining of various easily-deformed parts.

The invention relates to the technical field of powder metallurgy, in particular to a preparation process of a graphene composite profile prepared from brass waste, which comprises the following steps: selecting the brass waste containing different components according to the application scene of the graphene composite profile; the brass waste materials are smashed into brass block-shaped smashed materials; the preparation method comprises the following steps: adding 0.001-10% by mass of graphene into the brass block-shaped crushed aggregates, and carrying out wet ball milling to form a first-size mixed powder liquid; carrying out semi-solid rotary shearing and stirring processing on the mixture; and continuously extruding the graphene-brass mixed base material to form a graphene composite profile blank, and carrying out post-process to obtain the graphene composite profile capable of overcoming brass spot, line and surface defects. According to the invention, a powder metallurgy process is combined with a medium-temperature continuous extrusion process, so that the brass waste is efficiently and directly recycled without pollution, and the physical properties and chemical properties such as hardness, strength, conductivity, corrosion resistance and high-temperature creep resistance of the composite material are greatly improved. The invention further correspondingly discloses the graphene composite profile and application.

The invention discloses a scrap iron removing device for waste cutting fluid separation, and relates to the technical field of machine tool machining, the scrap iron removing device comprises a settling tank, an L-shaped flow slowing plate is arranged on the inner side of the settling tank, a liquid flowing channel exists between one side of the L-shaped flow slowing plate and the inner side wall of the settling tank, and inclined plates are fixedly arranged on the lower side of the L-shaped flow slowing plate at equal intervals; the inclined plates incline downwards towards the sides away from the liquid flowing channel, overflow notches are formed in the sides, away from the liquid flowing channel, of the settling tanks, the overflow notches are formed in the upper sides of the inclined plates, and defoaming mechanisms are arranged on the lower sides of the L-shaped flow slowing plates; in a narrow space between the inclined plates, the defoaming net shakes repeatedly, the surface tension of foam and an oil film is quickly destroyed through segmentation and friction effects, and metal scraps released by foam breakage quickly sink under the action of the inclined plates, so that the purposes of quickly eliminating the foam and precipitating the metal scraps are achieved, the settling time is greatly shortened, and the service life of the defoaming net is prolonged. And the foam is prevented from entraining a large amount of metal chippings to enter a follow-up circulating pipeline to increase follow-up pressure.

The invention discloses a coal gangue abandoned mine ecological restoration water retention technology, and belongs to the technical field of environmental protection. According to the remediation technology, after the surface soil of the mine is loosened, the alkaline waste and the heavy metal adsorbent are firstly added for neutralization and adsorption pretreatment, and then the composite soil conditioner is continuously added to sequentially cover and construct the improved composite layer soil in a gradient manner; the composite soil conditioner comprises fly ash, steel slag, local clay, straw fibers, water-retaining slow-release microcapsules, charcoal, papermaking white mud and humus soil, high-resistance vegetation is transplanted on the obtained improved composite layer soil, meanwhile, a microbial agent is inoculated, and remediation is completed after the soil is maintained to be stable. According to the method, multiple technical processes are integrated and matched and cooperated with one another, the purpose of long-acting water retention is finally achieved through the combined action of multiple remediation mechanisms of materials, vegetation and microorganisms, and compared with a traditional mine remediation technology, the method is better in stability and longer in acting time and has a good application prospect.

The invention relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with an automatic scrap cleaning function, which comprises a machine tool base, the machine tool base comprises a fixed seat for fixing parts and a movable seat for fixing a tool bit, a limiting assembly and a scrap receiving box are mounted on the machine tool base, and the limiting assembly is mounted on one side of the fixed seat. By arranging the limiting assembly, sweeps are blown downwards through the downward blowing spray pipe and the rotary spray nozzle, the scattering range of the sweeps can be limited, the sweeps are guided to fall into the box body under the action of the downward blowing spray pipe, and the sweeps can be collected and conveniently cleaned.

A laser cutting machine for metal plate cutting relates to the technical field of laser cutting machines and comprises a horizontally-arranged cutting table, a receding groove and a sliding U-shaped plate are sequentially arranged at the top of the cutting table in the length direction of the cutting table in a penetrating mode, the sliding U-shaped plate is horizontally arranged in a sliding mode, and a three-axis module is arranged at the position, above the receding groove, of the top of the cutting table. The laser cutting gun is installed on the three-axis module, a plurality of supporting rollers are horizontally arranged in the sliding U-shaped plate side by side, the two ends of each supporting roller are correspondingly and rotationally connected with the opposite inner walls of the sliding U-shaped plate, a horizontally-arranged partition plate is fixedly arranged on the inner wall of the avoiding groove, and a transferring assembly is arranged at the bottom of the partition plate. A discharging assembly and a fixing box are arranged on the left side and the right side of the partition plate correspondingly. The problem that cut finished products in kerfs of an existing laser cutting machine are difficult to take out is solved. And when cutting scraps are cleaned, shutdown disassembly operation is needed. And the positioning accuracy of the cutting area is low. And the post-treatment process of the cutting excess materials is tedious.

The invention relates to the technical field of hinge beam forging, in particular to a hinge beam forging device and a forging method.The hinge beam forging device comprises a forging table, a plurality of second guide rods are fixed to the outer wall of the forging table, a lower lifting plate is arranged on the outer walls of the second guide rods in a sliding mode, and a motor is installed on the lower lifting plate; an output shaft is fixed to the output end of the motor, a fixing frame is fixed to one end of the output shaft, and a through groove is formed in the fixing frame. According to the forging device and method for the hinge beam, a motor continues to be started, so that a third guide rod and a third ball continuously knock the outer wall of a lower die when the lower die is separated and an opening faces downwards, and metal chippings adhered to the lower die due to forging are separated from the inner wall and fall to the outside; and when the lower mold is knocked, the metal scraps can be repeatedly vibrated to shake off the scraps on the inner wall.

The invention relates to a negative pressure dust collection type cutting machine, and belongs to the technical field of cutting machines, the negative pressure dust collection type cutting machine comprises a cutting machine workbench, a cutting module, a negative pressure dust collection module, an explosion-proof filtering system and a control system, the cutting module comprises a three-dimensional five-axis cutting mechanism and a high-power laser cutting head, and the high-power laser cutting head is loaded at the driving end of the three-dimensional five-axis cutting mechanism. The dust collector has an anti-explosion effect and an environment-friendly discharge function, and is provided with an anti-static pipeline, an inert gas injection device and a spark catcher aiming at flammable metal dust, so that the explosion risk can be remarkably reduced, multi-stage filtration is carried out by adopting the sintered metal filter cartridge, the HEPA filter screen and the like, discharged air meets the environment-friendly standard, the sewage problem of traditional wet dust collection is avoided, and the dust collector is suitable for popularization and application. And the metal plate is fixed through the evenly-distributed adsorption holes, plate deviation caused by vibration or scrap accumulation in the cutting process is prevented, and the precision of the cutting path is improved.

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 belongs to the technical field of seamless steel pipe manufacturing, and particularly relates to a preparation method of an ultra-large-specification 9Cr series ferrite heat-resistant seamless steel pipe and a product thereof. The preparation method of the ultra-large 9Cr series ferrite heat-resistant seamless steel pipe sequentially comprises the following working procedures of continuous casting, forging and pipe manufacturing. According to the continuous casting process, blast furnace molten iron and scrap steel serve as raw materials, and a continuous casting pipe blank is produced through an electric furnace, LF refining, VD vacuum treatment and round blank continuous casting machine pouring; the forging process comprises the steps of blanking, forging, annealing, perforating and the like to produce a pipe blank; the seamless steel pipe is produced through the procedures of heating, perforating, pipe rolling, pipe expanding, heat treatment, turning and the like in the pipe manufacturing procedure. And the prepared 9Cr series seamless steel tube is uniform in component and high in purity, so that the 9Cr series seamless steel tube has relatively high high-temperature strength, and the problems of unqualified flaw detection, non-uniform wall thickness, eccentricity and the like caused by alloy segregation in the prior art are solved.

The invention belongs to the technical field of aluminum alloy production, and particularly discloses a low-carbon environment-friendly method for producing a 3104 alloy blank with a high secondary aluminum proportion, which comprises the procedures of smelting, melt purification, online degassing filtration, continuous casting and triple continuous rolling, and is characterized in that alloy components are optimized, secondary aluminum waste is used in a large proportion, the Fe content is increased, and the production cost is reduced. Iron and elements such as manganese in the aluminum alloy form intermetallic compounds, the intermetallic compounds can serve as heterogeneous nucleation, obviously refine alloy grains during casting and increase Fe content, the performance of the 3104 alloy blank is improved, meanwhile, aluminum is replaced with iron, the main material cost can be reduced, in addition, due to the fact that the rolling temperature of an inlet of each rack is high, and meanwhile the finish rolling temperature is also high, the service life of the 3104 alloy blank is prolonged. The self-tempering effect is achieved, internal dislocation of materials is eliminated, the blank edge cracking condition is improved, strip breakage caused by the edge cracking problem in the subsequent rolling process is avoided, safe production is guaranteed, the main material cost is reduced, meanwhile, the blank performance is improved, the 3104 alloy blank is efficiently produced in a high-quality mode, and the purposes of low carbon and environment protection are achieved.

The invention discloses an aluminum electrolysis cell PTM anode automatic pole changing device and method.The aluminum electrolysis cell PTM anode automatic pole changing device comprises crown block moving equipment and a moving trolley, the moving trolley is arranged on the crown block moving equipment, and height measuring equipment and residue fishing equipment are symmetrically arranged on the two sides of the moving trolley; material sucking and discharging equipment and crust breaking equipment are arranged on the two sides of the interior of the movable trolley respectively, the crown block moving equipment comprises two mounting bridge frames and a crown block moving mechanism, and the crown block moving mechanism is movably arranged between the two mounting bridge frames. And positioning deviation rectifying mechanisms are arranged between the two sides of the crown block moving mechanism and the mounting bridge. The problem that in the actual using process of PTM equipment in the prior art, due to strong magnetism and dust in an electrolysis workshop, automatic replacement of the anode scrap is difficult is solved.

The short-process magnesium alloy wire continuous extrusion preparation method comprises the following steps that a, magnesium alloy extrusion materials are prepared, the thickness of the extrusion materials is 0.03-0.1 mm, and the length of the extrusion materials is 0.3-5 mm; b) preheating an extrusion wheel, wherein the preheating temperature is 250-500 DEG C; c) continuous extrusion: continuously introducing inert gas into an extrusion cavity, then feeding the magnesium alloy scraps into the extrusion cavity, and driving the magnesium alloy scraps to pass through an extrusion die along with rotation of an extrusion wheel to extrude a wire; and d) shaping and sizing: carrying out shaping and sizing treatment on the obtained wire material to obtain the magnesium alloy wire material with the final required diameter. According to the method, the problem of lengthy magnesium wire processing flow is solved, the problem of single type of magnesium alloy wires is solved, and the problem of efficient batch production of magnesium welding wires and wires for additive manufacturing of different component systems is solved, so that industrial production of the magnesium alloy wires is realized.

The invention relates to the technical field of steel and iron smelting, and particularly discloses an ultra-low sulfur steel smelting method, which comprises the following steps of: washing a converter and washing a steel ladle before converter smelting; in the desulfurization process, high-temperature molten iron is used, deep desulfurization is conducted through a KR desulfurization method, and the sulfur content of the molten iron is smaller than or equal to 0.003%; converter working procedure: smelting by using a top-bottom combined blown converter, adopting a single-slag remaining method, adding self-produced first-class scrap steel, using low-sulfur lime, dolomite and iron-containing oxide, and controlling the end point of the converter: controlling the tapping carbon to be less than or equal to 0.04%, sulfur to be less than or equal to 0.005% and the temperature to be more than or equal to 1610 DEG C, adding lime for slag washing in the tapping process, adding part of lime for thick slag treatment after the tapping is finished, and then performing slagging-off operation; a refining process: adding lime and refining slag for slagging and desulphurizing, and finely adjusting components and raising the temperature; a continuous casting process: carrying out continuous casting; and finally, sulfur in a casting blank smelting finished product is less than or equal to 6ppm.

The invention belongs to the technical field of lathes, particularly relates to a double-stand-column double-channel numerical control vertical lathe and a using method thereof, and provides the following scheme aiming at the problems that in the prior art, scrap iron is prone to being accumulated in a lathe, the moving precision of a workbench is affected, the accumulated scrap iron needs to be manually cleaned, and meanwhile a protective door cannot be effectively limited. The lathe comprises a lathe body, the lathe body is composed of a base and a protective cover, the protective cover is fixed to the top of the base, two movable doors are arranged on one side of the protective cover, and the protective cover is matched with the movable doors to be used for preventing scrap iron from splashing during machining; when the workbench moves, scrap iron on the base is shoveled to the sliding plate, in addition, when the four-jaw chuck rotates to machine parts, the synchronous belt and the rubber scraping strip can be driven to operate, the rubber scraping strip can remove the scrap iron on the sliding plate, it is avoided that the moving precision of the workbench is affected by scrap iron accumulation, and the scrap iron can be automatically removed.

The invention provides a steel cutting and production scheduling method and device based on dynamic risk assessment, and relates to the field of steel processing pre-production management. Order, equipment and inventory data are collected in real time, and a multi-dimensional numerical matrix is constructed to achieve data structured expression; adopting a Monte Carlo method to generate a candidate production scheduling sequence, combining leftover material loss and delay risk dynamic evaluation, and fusing simulated annealing and an adaptive threshold mechanism to carry out iterative optimization; and through probability similarity screening and regression fitting, an optimal production scheduling scheme is determined in an error allowable range. The method effectively balances the production efficiency and the resource utilization rate, reduces the cutting loss and the delivery risk, and is suitable for the intelligent production scheduling decision of a complex manufacturing scene.

A high scrap steel ratio steelmaking nitrogen control integration technology is characterized by comprising the steps that pig iron and coke are added into a converter and molten iron, and the bottom blowing strength of the converter is improved; converter sealing and argon protection optimization are carried out, and then silicon iron heating and waste steel treatment are carried out before blowing; the first blowing hit rate is optimized, tapping and deoxidation are controlled, and the nitrogen content of the optimized alloy is detected; transferring into a refining furnace, and adjusting the power transmission heating time and the deoxidation and alloying time; optimizing a low-slag-quantity and low-temperature-period power transmission mode, and controlling the argon flow of the refining furnace; and optimizing slagging at the early stage of refining, controlling a silicon-manganese composite deoxidation and slag system, and controlling argon flow during soft blowing of the refining furnace. According to the technology, the nitrogen removal amount of the converter under the low molten iron unit consumption condition is improved mainly through carbon content supplementation, waste steel size optimization and exothermic agent heat supplementation, and the nitrogen increase of the refining furnace is reduced. According to the integrated nitrogen control process technology, the nitrogen content can be effectively reduced, the investment and application of vacuum degassing equipment are reduced, the process is simplified, and the production cost is reduced.

The invention relates to the technical field of ultralow-sulfur peritectic steel smelting, and particularly discloses a method for producing an ultralow-sulfur peritectic steel continuous casting round billet through a full-scrap-steel electric arc furnace. According to the method for producing the ultra-low-sulfur peritectic steel continuous casting round billet through the full-scrap steel electric arc furnace, the corresponding conditions of burdening, electric arc furnace smelting, molten steel slagging and deoxidizing, LF refining, VD vacuum smelting and peritectic steel round billet continuous casting are controlled, a specific amount of low-sulfur scrap steel is selected, and the oxygen supply strength in the electric arc furnace smelting process is limited; the carbon content during tapping of an electric arc furnace is guaranteed in a carbon spraying mode, the adding opportunity of aluminum ingots, premelting refining slag, fluorite, lime and aluminum wires is limited in the molten steel slagging and deoxidizing process, the aluminum content of molten steel during LF refining is controlled, the top slag content of VD vacuum smelting is limited, a high-alkalinity low-sulfur carbon-free covering agent is added in the initial continuous casting stage of peritectic steel round billets, and the high-alkalinity low-sulfur carbon-free covering agent is added. The ultra-low-sulfur peritectic steel continuous casting round billet with excellent comprehensive performance is prepared, the surface is free of sunken and crack defects, and the defect rate is basically zero.

The invention discloses a brush roller device suitable for various bandwidths and a using method thereof, and belongs to the technical field of brush rollers, the brush roller device suitable for various bandwidths comprises a fixed seat and further comprises a roller frame, the roller frame is movably arranged on the fixed seat, a brush roller body is rotationally arranged on the roller frame, and the brush roller body is arranged on the fixed seat; a driving motor for driving the brush roll body to rotate is fixedly arranged on the fixed seat; the transverse moving mechanism is arranged on the fixed seat and is used for driving the roller frame to transversely move on the fixed seat; the impurity removing mechanism is arranged on the roller frame and is used for cleaning oxidized chips on the brush roller body; the brush roller body transversely moves in a reciprocating mode, oxidized scraps on the surface of a steel belt can be evenly brushed, the contact frequency of bristles and the surface of an object can be increased, abrasion of the bristles is more even, meanwhile, the brush roller body is suitable for brushing work of different belt widths, the brush roller can be automatically cleaned when the brush roller conducts brushing work, and the service life of the brush roller is prolonged. And the subsequent continuous and effective work of the brush roll is ensured.

The invention discloses laser cladding repairing equipment for an exhaust valve rod of a marine main engine. The laser cladding repairing equipment comprises a rotating mechanism, a cleaning mechanism and a repairing mechanism. The rotating mechanism adopts a plurality of stepping motors to drive friction wheels, self-centering clamping and intermittent rotation of the exhaust valve rod are achieved through a hydraulic cylinder and a plane connecting rod mechanism, it is ensured that positioning is accurate, and the rotating mechanism adapts to workpieces with different diameters. The cleaning mechanism is arranged below the rotating mechanism, a centrifugal fan is used for simultaneously driving a grinding disc to rotate at a high speed to conduct surface grinding, scrap iron is discharged in time through the negative pressure suction function of the centrifugal fan, and cleaning and dust removal are integrated. And the anti-diffusion cover and the anti-diffusion plate are matched to form a local closed area, so that dust dissipation is effectively inhibited. The repairing mechanism adopts a mechanical arm to carry a laser cladding head, the curved surface of the valve rod can be tracked with high precision, and automatic cladding is completed. The equipment integrates automatic clamping, efficient cleaning, synchronous dust removal and intelligent repairing, and the automation level, the surface treatment quality and the operation safety of repairing of the exhaust valve rod are remarkably improved.

The invention provides a magnesium-aluminum alloy casting molding cooling device, which relates to the technical field of casting process equipment, and comprises a cooling pool, a mounting rack fixed on the top of the cooling pool, a chain conveying belt arranged on one side of the mounting rack, a plurality of clamping mechanisms arranged at the bottom of the chain conveying belt in a transmission manner, and a cold air mechanism arranged on the cooling pool, a water circulation frame is arranged on the side, away from the cold air mechanism, of the top of the cooling pond. When a limiting block slides to the end part of the inner wall of a concentric-square-shaped limiting frame, a second bevel gear is meshed and matched with a first bevel gear, a third bevel gear is meshed and matched with a fourth bevel gear, and a started chain conveying belt drives a filtering assembly to move towards one side of a low filtering plate along a threaded rod, so that the whole filtering assembly moves towards the other side of the cooling tank; the difficulty of cleaning metal scraps in the cooling pond is reduced, water impurities in the cooling pond can be concentrated in the filtering assembly, and power output in the impurity collecting process is reduced.

The invention relates to the technical field of electricity meter scrap treatment, and discloses an electricity meter scrap crushing and sorting treatment device which comprises a machine body, a motor is fixedly connected to one side of the machine body, two crushing rollers are rotatably connected to the top in the machine body, and a first circular gear is fixedly connected to the side, away from the motor, of each crushing roller; the output end of the motor is connected with one of the crushing rollers, the two first circular gears are meshed, a rolling assembly, a separating assembly and a screening assembly are sequentially arranged in the machine body from top to bottom, a transmission assembly and a reciprocating assembly are arranged on the outer wall of the machine body, the rolling assembly comprises a rotating shaft, a rolling box and a fixing plate, and the rotating shaft is connected with the rolling box. And the rotating shaft is rotationally connected to the inner wall of the machine body. And through cooperation of the rotating shaft, the first bevel gear and the second bevel gear, the rolling rollers generate periodic left-right rolling action in the rolling box, the crushed materials are subjected to secondary rolling, and the particle size of the materials is refined.